589results about "Commutators manufacture" patented technology

A process of fabricating a slip ring component, a slip ring component, and a slip ring assembly are disclosed. The process includes forming a first shot, forming a second shot, and immersion bathing the first shot and the second shot. The immersion bathing applies an electrically conductive plating to exposed surfaces of the second shot.

In a state in which a first divisional core and a second divisional core are arranged in a state spaced from each other and adjacent to each other, a first coil and a second coil are each wound around a tooth. The first coil and the second coil are in the same phase. In a state in which a plurality of divisional cores are arranged annularly so that their teeth are oriented in a radially inward direction, the first divisional core and the second divisional core are not adjacent to each other in the circumferential direction. A plurality of connection wires are shaped to converge at an end surface of a stator core. This facilitates the winding of the coils around the divisional cores. Further, the connection wires can be shortened.

A method of making composite electric machine components. Magnetic segments and non-magnetic segments are separately formed to green strength, and then arranged adjacent to each other in a desired magnetic pattern. A small amount of powder material is added in-between the segments, and the whole assembly is then sintered to form a sinterbonded composite component of high structural integrity.

A direct-current motor includes a stator having a magnetic field system, a rotor disposed around the stator, a commutator which rotates together with the rotor, and power supply brushes which are urged in the axial direction by urging members so as to come into contact with the sliding contact surfaces. The rotor includes an armature core around which armature coils are wound, and a rotary shaft which rotates together with the armature core. The commutator has segments extending radially. The segments have sliding contact surfaces orthogonal to an axial line of the rotary shaft. At least a part of each power supply brush comes into contact with the sliding contact surface at a position further radially outward than the armature coil.

A method of forming a stator for an electric machine having a cascaded winding includes the steps of: providing a stator core having a plurality of circumferentially spaced and axially-extending core slots in a surface thereof, forming a plurality of A conductors and a plurality of B conductors, arranging the A and B conductors into a wire pack, rolling the wire pack into a cylindrical shape and inserting the wire pack within the stator core, and expanding the wire pack radially outward such that the wire pack is inserted within the slots of the stator core.

The invention discloses a commutator segment automatic assembly technology. Through the rotation of a dividing plate, in a core feeding position, a core feeding machine conveys the cores into the dividing plate through a core feeding device to carry out location. In a detection position, a detection device carries out detection on the location conditions of the cores. In a sheet inserting position, a sheetbody feeding machine inserts commutator segments into the cores through a sheeting inserting device. In a rubber ring feeding position, a rubber feeding machine props the rubber rings and sleeves the rubber rings on the outer circles of the cores with the inserted commutator segments through a rubber ring sleeving device. In a blanking position, a finished product clamping device clamps finished products and outputs the finished products. The commutator segment automatic assembly technology achieves complete automation of a whole assemble process of assembling scattered commutator segments into cylinders, and has the advantages of reducing amount of labor used, improving efficiency, guaranteeing quality and reducing cost. Meanwhile, the invention provides a full-automatic commutator segment assembly machine for applying the commutator segment automatic assembly technology.

In the device for producing a ring core, a drop-through blanking die (46) constituting a rotor core production line (30) is used to mold a ring core by laminating a plurality of split core plates (12, 16) while arranging them in a ring shape. The drop-through blanking die (46) consists of a rotary mechanism (55) for rotating the split core plates (12, 16) thus laminated through a predetermined angle, an inner guide member (62) being arranged on the inner circumferential side of the split core plates (12, 16) laminated in a ring shape, and an outer guide member (58) being arranged on the outer circumferential side of the split core plates (12, 16). While the split core plates (12, 16) are supported by any one of the inner guide member (62) and the outer guide member (58), a pressure is imparted to the split core plates (12, 16) by the other.

A stator for a motor includes a stator core, an insulator, and coils. The stator core includes an annular portion and teeth, which extend radially from the annular portion. The stator core is divided into core segments in the circumferential direction. Each core segment has an arcuate portion and one of the teeth, which extends from the arcuate portion. The insulator insulates each coil wound around one of the teeth from the stator core. The insulator includes coupling portions at positions corresponding to the circumferential ends of the arcuate portions. Each coupling portion couples the adjacent core segments to be rotatable relative to each other. The insulator facilitates manufacture of the stator.

The inventive method of assembling conductive segments (16) of a rotor winding or a stator winding in a rotary electric machine comprises the following stages: insertion of the conductive segments (16) into slots made in a core (12) of the rotor or stator, whereby the free ends of the conductive segments protrude beyond the latter, and welding of the free ends of the conductive segments in groups of two in order to form a winding (14) around the rotor or stator. The conductor statements are both made of wire which is electrically conductive and coated with an electrically insulating material. The coating of electrically insulating material is removed in the welding zone of the conductive segments by the means used for welding the latter. The invention can be used for conducting segments of a rotor or stator winding in an alternator in a motor vehicle.

One embodiment disclosed relates to a method for sealing an active area of a surface acoustic wave (SAW) device on a wafer. The method includes providing a sacrificial material over at least the active area of the SAW device, depositing a seal coating over the wafer so that the seal coating covers the sacrificial material, and replacing the sacrificial material with a target atmosphere. Another embodiment disclosed relates to an SAW device sealed at the wafer level (i.e. prior to separation of the die from the wafer). The device includes an active area to be protected, an electrical contact area, and a lithographically-formed structure sealing at least the active area and leaving at least a portion of the electrical contact area exposed.

Transverse flux electric motors are made using a unique process where individual components are premade and then assembled together. A stator portion is made by nesting a coil between two stator core portions. The stator core portions are made from laminations or sintered powder materials. A separate rotor portion is provided with a core and two permanent magnets that interact with projections on the stator core portions. In one example, the stator includes support members that support additional magnetic core portions to magnify the magnet flux density in the air gap between the stator and the rotor.

A method for making a wound stator of an automotive generator is provided for replacing the conventional winding technique. The method includes: forming a stator ring provided with a plurality of annularly arranged radial through slots; cutting a copper wire into a plurality of wire units each having a rectangular cross section; inserting the wire units into the through slots in an interlacing manner; and soldering wire ends of the wire units sequentially so as to form a connected loop.

The invention discloses a method for manufacturing a commutator, which is characterized by following procedures including: (1) blanking and drawing; (2) punching a commutator segment provided with a hook; (3) washing the commutator segment; (4) lining up the commutator segment which is then pressed and arranged on a locating housing wrapping the inner side of the hook of the commutator segment; (5) sheathing the locating housing on an injection molding die to complete the injection molding of the commutator; (6) removing a feed handle, stripping down the locating housing and forming an insulation groove; (7) curing; (8) machine hinging an inner hole of the commutator; (9) forming a hook of the commutator; and (10) polishing. Compared with the prior art, the insulation groove of the commutator of the invention is completed through forming in one piece of the locating housing; in the process of forming the insulation groove, no mica sheet is used, and mechanical processing such as engraving mica, etc. is not needed; the locating housing can solve the problem of over-tight matching between the molding die and the hook of the commutator segment, and improve yield of the product; simultaneously, wrapping of the commutator segment by the locating housing avoids pasting of plastic on the hook when injection molding is carried out; and a demand for clean surface of the hook can be met without turning.

A stator of a rotary electric machine having secured core slot insulators includes a multi-phase stator winding, having a plurality of slot segments that are adapted to be radially inserted into a plurality of circumferentially spaced axially-extending core slots in a surface of a cylindrically-shaped stator core. The stator winding includes the plurality of slot segments alternately connected at the first and second ends of the stator core by a plurality of end loop segments to form the winding. The plurality of core slots house an insulator to electrically isolate the slot segments from the core slots. The insulator is secured to the sides of the core slot prior to the process of radial inserting the plurality of slot segments into the plurality of core slots of the cylindrically-shaped stator core.

This process for assembling conductive segments (16) of a rotor or stator winding of a rotary electrical machine comprises the stages consisting in inserting the conductive segments (16) in slots arranged in a core (12) of the rotor or of the stator in such a way that the conductive segments project beyond the latter by their free ends, and in welding the conductive segments in pairs by their projecting free ends to form a winding (14) around the rotor or the stator.The conductive segments each being formed by a wire of electrically conductive material covered with a layer of electrically insulating material, the layer of electrically insulating material is eliminated, in the zone in which the conductive segments are welded, by the means used to weld the latter.Application to the assembly of conductive segments of a rotor or stator winding of a motor-vehicle alternator.

A pool cleaning vacuum employing multiple power supply sources and associated method includes a body including first, second and third vertically juxtaposed chambers formed therein. The chambers share a wall with the second chamber wherein the third chamber is isolated therefrom. A motor assembly and a filter section are housed within the first chamber. The filter section is located downstream of the motor assembly, and has an open lateral face exposed to the aqueous environment. An anchor shaft is seated within the second chamber and extends through an entire longitudinal length of the body. A vacuum head is pivotally attached to the anchor shaft. The vacuum head includes a conduit in communication with the filter section, and a plurality of wheels rotatably coupled to opposed corners thereof. A mechanism transmits a predetermined quantity of power to the motor assembly.

A stator coil of a rotary electric machine such as an alternator for use in an automobile is composed of a plurality of U-shaped conductor segments inserted into slots formed in a stator core. Each segment has a head portion and two legs extending from the head portion. The plurality of segments include regular segments each having a regular distance between two legs (a regular slot-pitch) and special segments each having a special slot-pitch different from the regular slot-pitch. The head portions of both the regular and the special segments are simultaneously twisted to form the respectively required slot-pitches after a preliminary twist is given to the special segments. In this manner, a process of manufacturing the stator coil is simplified.

A motor includes a stator having magnets, a rotor having teeth, a commutator secured to the rotor, and brushes. A coil is wound about each tooth. The commutator is connected to the coils. The brushes slidably contact the commutator. The number of the magnets and the number of the teeth are determined such that the resultant of torque vectors that act on the teeth is zero. For example, the number of the magnet is six, and the number of the teeth is eight. As a result, the rotor is prevented from vibrating.

In manufacturing of the stator unit 2 according to one preferred embodiment of the present invention, a plurality of terminal pins are arranged in an axially spaced manner from a plurality of the coils during a twining process of the wires from the coils 232 to the terminal pins 241. Then, after the wire is twined to the terminal pins, the terminal pins connected to the coils are moved along the outer side face of the sleeve housing, functioning to as a guide portion for the terminal pins. By virtue of the configuration, the terminal pins 241 may be approximated to the coils without applying the tension on wire, and the stator unit may be made thin with preventing the open circuit of the wires.

A method for repairing or servicing a wye ring of a generator includes the steps of, dismantling the generator to gain access to the wye ring, determining a fault location in the wye ring; and attaching a patch to the wye ring in an area of the fault location. The patch provides an electrical path around the fault location so that the generator is repaired.

A production method of a polyphase sequentially joined-segment coil of a rotary electric machine and a product produced by the same are provided. A production machine includes pairs of tines working to catch heads of conductor segments when they are twisted using rings. The tines are designed to be rotatable about an axis of the rings following rotation of the rings to absorb stress acting on insulating coating on the heads of the segments to minimize rubbing of the insulating coatings, thereby ensuring a desired degree of electrical insulation of the stator coil.

The invention relates to a method for automatically demolding a commutator injection-compression mold, comprising the steps of: loading a molding material into a material compartment plate, arranging commutator segment components in a middle mold of a middle template, performing mold closing on a heating plate, the material compartment plate, an upper template, the middle template and a lower template, filling the molding material into the commutator segment components and performing injection-compression molding; and then, separating the heating plate and the upper template from an upper oil cylinder and supporting the separated heating plate and upper template by a suspender, separating the upper template and the lower template and supporting the separated upper template and lower template by a pull rod, jacking the middle template by ejector rods driven by a lower oil cylinder so as to separate the middle template and the lower template, taking out the middle template, and jacking out a semi-finished product of the commutator in the middle template by a delivery foot on an injection-compression demolding frame. A device for automatically demolding the commutator injection-compression mold is characterized in that the heating plate is connected with the upper oil cylinder, the lower template and a base plate are provided the ejector rods in contact with the middle template, and the ejector rods are connected with the lower oil cylinder; the suspender is arranged between the material compartment plate and the heating plate, and the pull rod is arranged between the base plate and the material compartment plate. The method and the device disclosed by the invention has the advantages of realizing automatic operation of demolding, reducing labor intensity and increasing working efficiency; and the specification or quantity of the commutator segment components on the middle template can be increased properly.

An outer rotor type multi-pole generator stator is provided in which a lead wire extending from a coil is connected by fusing to a connecting terminal fitted into and fixed to a bobbin wherein, in order to avoid the lead wire becoming slack after connection by fusing and enable assembly of the stator to be carried out efficiently, the connecting terminal (32) is formed from an external conductor connection terminal portion (32a) that is fitted into and fixed to a fitting hole (31), a connecting plate portion (32b) having one end thereof connected at right angles to the external conductor connection terminal portion (32a) and extending toward the radially inner side of the stator, and a clamping plate portion (32c) provided so as to be connected to the connecting plate portion (32b) so that the lead wire (33) can be held between the clamping plate portion (32c) and the other end portion of the connecting plate portion (32b) and connected by fusing, and the bobbin (24) is provided on the inner periphery thereof with a channel (43) having one end thereof facing the other end of the connecting plate portion (32b) and opposite ends thereof open so that one electrode of a pair of electrodes (44, 45) for connecting by fusing can be inserted through the channel (43).

The invention discloses a manufacturing method for a slot forming type commutator. The manufacturing method sequentially comprises the following processes of: warm extruding, drawing, punching, segment ranking, compressing, curing, inner hole turning, excircle turning, sanding and polishing, wherein the segment ranking process means ranking commutator segments firstly, and then inserting and ranking inner mica sheets with the same width as that of an insulation slot and outer mica sheets with the width narrower than that of the insulation slot in sequence; and the compressing process means removing the outer mica sheets so as to naturally generate the insulation slot between the commutator segments and make residues not exist in the insulation slot between the commutator segments. In the manufactured slot forming type commutator, the width of an insulation layer between the commutator segments is the same as that of the insulation slot. By the manufacturing method, the conventional slot milling process is omitted, the materials of the commutator segments cannot be wasted, and the insulation performance among the commutator segments is effectively improved so as to improve the yield of commutator products, lower production cost and improve technical performance and quality of the products.

In accordance with one embodiment, the present technique provides an apparatus for assembling a rotor. The exemplary apparatus includes a base that has a central aperture and a seating surface for receiving the rotor. An arbor then extends through the central aperture, the arbor having a longitudinal axis that is substantially orthogonal to the seating surface, and including threaded ends opposite with respect to one another. The exemplary apparatus also includes at least one member of a family of fixtures coupleable to the arbor, the family including a pressure fixture that has first and second piston assemblies disposed at diametrically opposite locations to one another, the family also including a support fixture coupleable the arbor and having members extending axially therefrom, the members being configured to support securing members of the rotor. Advantageously, the exemplary apparatus provides for a mechanism through which a securing member may be symmetrically installed with respect to the rotor core, thus improving rotor performance and construction.

An improved generator rotor (30) and a method of repairing an existing generator rotor (12) are disclosed. Methods consistent with the present invention provide techniques for repairing existing stress-damaged rotors (12) to remove stress-induced cracks (29), without requiring new retaining rings (16), to significantly extend the useful life of a generator without the cost and complexity of conventional repair techniques. Improved generator rotors (30) consistent with the present invention provide a tooth-top design that is more resistant to stress-induced cracking than conventional designs, resulting in new generators with longer useful lives.

An electric motor and method for reducing or eliminating end play. The motor comprises an adjustment member that cooperates with an end lamina member to facilitate reducing end play. The adjustment member is slidably mounted on an armature shaft and inside an aperture of a portion of the end lamina tube to reduce or eliminate end play. Thereafter, the adjustment member is permanently secured to the end lamina tube. In another illustrative embodiment, the movable bearing retainer sets endplay and also retains brushes in an open position prior to, for example, assembly of the motor.