Abstract: A short-circuit member includes a short-circuit conductor and a short-circuit insulator. The short-circuit conductor includes superimposed first and second short-circuit member formation groups. Each of the short-circuit member formation groups has outer terminals, inner terminals, and linking portions. The outer terminals contact one another and the inner terminals contact one another between each of the short-circuit member formation groups. The linking portions are maintained in non-contact between each of the short-circuit member formation groups.

Abstract: A commutator main body 11 includes a plurality of commutator pieces 13 arranged along a circumference, the center of which is a rotation axis L of a motor, and a main body insulator 14 holding the commutator pieces. A short-circuit member 12 is arranged on an end portion of the commutator main body 11 and includes a short-circuit conductor 21, which short-circuits predetermined ones of the commutator pieces, and a short-circuit insulator 22, in which the short-circuit member is embedded. A boss is formed integrally with the short-circuit insulator so as to project from the end portion of the commutator main body.

Abstract: The indoor unit for an air conditioner comprises a cross flow fan, an indoor heat exchanger, an auxiliary pipe, an indoor fan motor, a motor cover section, a front drain pan, a rear drain pan, and a communication passage. The communication passage is arranged adjacent to the motor cover section along the rotational axis in a top plan view and serves to link the front drain pan and the rear drain pan together. The cross flow fan, the indoor fan motor and the communication passage are arranged such that in a top plan view they are positioned along the rotational axis in the following order: the cross flow fan, the indoor fan motor, and the communication passage.

Abstract: A commutator main body 11 includes a plurality of commutator pieces 13 arranged along a circumference, the center of which is a rotation axis L of a motor, and a main body insulator 14 holding the commutator pieces. A short-circuit member 12 is arranged on an end portion of the commutator main body 11 and includes a short-circuit conductor 21, which short-circuits predetermined ones of the commutator pieces, and a short-circuit insulator 22, in which the short-circuit member is embedded. A boss is formed integrally with the short-circuit insulator so as to project from the end portion of the commutator main body.

Abstract: A short-circuit member includes a short-circuit conductor and a short-circuit insulator. The short-circuit conductor includes superimposed first and second short-circuit member formation groups. Each of the short-circuit member formation groups has outer terminals, inner terminals, and linking portions. The outer terminals contact one another and the inner terminals contact one another between each of the short-circuit member formation groups. The linking portions are maintained in non-contact between each of the short-circuit member formation groups.

Abstract: The indoor unit for an air conditioner comprises a cross flow fan, an indoor heat exchanger, an auxiliary pipe, an indoor fan motor, a motor cover section, a front drain pan, a rear drain pan, and a communication passage. The communication passage is arranged adjacent to the motor cover section along the rotational axis in a top plan view and serves to link the front drain pan and the rear drain pan together. The cross flow fan, the indoor fan motor and the communication passage are arranged such that in a top plan view they are positioned along the rotational axis in the following order: the cross flow fan, the indoor fan motor, and the communication passage.

Abstract: The present invention provides a heat exchanger and an indoor unit of an air conditioner that can both suppress a reduction in heat exchangeability and relax the error tolerance of the attachment angle of the heat exchange units. The indoor heat exchanger is a heat exchanger that is formed by connecting a plurality of heat exchangers disposed in the indoor unit of an air conditioner, and includes a first indoor heat exchanger, a second indoor heat exchanger, a third indoor heat exchanger and a fourth indoor heat exchanger. The third indoor heat exchanger is connected at an angle to one end of the first indoor heat exchanger and the second indoor heat exchanger. The fourth indoor heat exchanger is connected at an angle to another end of the first indoor heat exchanger and the second indoor heat exchanger. Then, the third indoor heat exchanger and the fourth indoor heat exchanger will have the same approximate height.

Abstract: The present invention provides an indoor unit of an air conditioner in which a heat exchanger can be easily installed and a method of assembling an indoor unit of an air conditioner. The indoor unit of the air conditioner includes a cross flow fan, an indoor heat exchanger, and a lower casing. The indoor heat exchanger has an approximate inverted V-shape in cross-section, auxiliary lines in which refrigerant flows that are connected thereto, and is disposed so as to cover the upper portion of the cross flow fan. The lower casing supports the cross flow fan. Then, each portion of the support unit is positioned at the height of the apex of the ventilation fan or lower.

Abstract: A method of manufacturing a commutator includes the steps of punching a commutator forming plate out of a plate member having a plurality of projections formed at predetermined intervals in such a way that the projections extend in parallel to one another, forming the commutator forming plate cylindrical and arranging the projections on an inner surface of the cylindrical commutator forming plate, filling an interior of the cylindrical commutator forming plate with a molten resin, segmenting the cylindrical commutator forming plate at predetermined angular distances after curing of the resin to thereby form commutator pieces, and positioning the plate member in a mold. The step of punching the commutator forming plate is carried out using a first punch having a plurality of recesses corresponding to the projections. Formed at those portions of each recess which correspond to both corner portions of each projection narrow portions that become narrower in a depth direction of that recess.

Abstract: A method of manufacturing a commutator includes the steps of punching a commutator forming plate out of a plate member having a plurality of projections formed at predetermined intervals in such a way that the projections extend in parallel to one another, forming the commutator forming plate cylindrical and arranging the projections on an inner surface of the cylindrical commutator forming plate, filling an interior of the cylindrical commutator forming plate with a molten resin, segmenting the cylindrical commutator forming plate at predetermined angular distances after curing of the resin to thereby form commutator pieces, and positioning the plate member in a mold. The step of punching the commutator forming plate is carried out using a first punch having a plurality of recesses corresponding to the projections. Formed at those portions of each recess which correspond to both corner portions of each projection narrow portions that become narrower in a depth direction of that recess.

Abstract: A motor has an armature that includes a motor core and a commutator. An insulator for insulating the motor core is composed of winding insulating portions and a shaft insulating portion integral with the winding insulating portions. A connecting portion is formed at the end of the shaft insulating portion. The connecting portion is inserted into an insertion groove of the commutator for integral connection. Specifically, the insulator is fixed to the armature shaft by the application of windings, and the commutator is connected and fixed to the insulator. Accordingly, a larger fixing force can be obtained compared to conventional structures, and the use of an adhesive and highly accurate machining become unnecessary, thereby decreasing costs.

Abstract: In a vibrating tool, a body housing and a handle are displaceably interconnected and a large range of vibrations can be effectively absorbed. A vibrating tool is composed of a body housing and a handle. A projection is provided at the rear end of the body housing. By engaging a stop on the handle with a flange on the projection, the handle is positively interconnected with the housing with a clearance therebetween. A rubber ring is located in the clearance between the handle and the body housing. A radially inwardly opening groove is provided in the rubber ring, so that the ring is easily deformed when the handle and the body housing are displaced relative to each other. Since the handle and the body housing are displaceably interconnected with each other and the rubber ring interposed between the handle and the body housing is easily deformed, large amplitude vibrations can be absorbed.

Abstract: A vibration type floor sweeper comprising a mounting frame; a motor mounted on the mounting frame; at least two movable supporting points; and a pad or brush having an overall square-shaped configuration movably mounted on a bottom surface of the mounting frame through the movable supporting points, the pad or brush being horizontally vibrated by eccentric operation of the motor.

Abstract: A method of adhering in advance a soldering material to a location on each of a plurality of claw-shaped portions of a commutator at which a winding for the armature of an electric motor is to be electrically connected thereto, for ensuring a strong and reliable electrical connection between the windings and the claw-shaped portions.A plurality of narrow grooves are defined in the claw-shaped portions and the narrow grooves are charged with molten soldering material, which solidifies therein. The thus-solidified soldering material is thereafter re-melted by heat produced at the time of resistance welding of the windings to the claw-shaped portions to thereby reinforce the electrical connection between the claw-shaped portions and the windings and to prevent an increase in the electric resistance between the windings and the claw-shaped portions.

Abstract: A plate-like material is rounded in the form of a cylinder so as to form a main body of a commutator to which an end of a winding for an armature coil of an electric motor is electrically connected, and both ends of the plate-like material are opposed to each other so as to define a joint portion therebetween. When a molten soldering material is introduced into the joint portion and solidified therein, the joint point is closed by the soldering material, thereby making it possible to mold the main body of the commutator, which is shaped substantially in the form of a jointless cylinder. The commutator can be easily fabricated and the manufacturing cost thereof can also be reduced as compared with a case where the main body of the commutator is fabricated from a pipe-shaped material. Since the joint portion can reliably be closed, resin used to charge the inside of the main body of the commutator therewith at a subsequent step can be prevented from extruding toward the outside of the main body.

Abstract: A plate-like material is rounded in the form of a cylinder so as to form a main body of a commutator to which an end of a winding for an armature coil of an electric motor is electrically connected, and both ends of the plate-like material are opposed to each other so as to define a joint portion therebetween. When a molten soldering material is introduced into the joint portion and solidified therein, the joint point is closed by the soldering material, thereby making it possible to mold the main body of the commutator, which is shaped substantially in the form of a jointless cylinder. The commutator can be easily fabricated and the manufacturing cost thereof can also be reduced as compared with a case where the main body of the commutator is fabricated from a pipe-shaped material. Since the joint portion can reliably be closed, resin used to charge the inside of the main body of the commutator therewith at a subsequent step can be prevented from extruding toward the outside of the main body.