This terminated electric wire is composed of a loop at the tip and stranded wires extending from a base portion of the loop. At a molten portion of the base portion of the loop, two stranded wires cross each other, and the stranded wires are fused so that strands constituting the stranded wires are fixed together and integrated. In diffusion-bonded portions on both sides of the base portion of the loop, the strands are diffusion-bonded to each other while maintaining the shape of the strands. In the part from the tip of the loop to the front of the diffusion-bonded portions, the strands of the stranded wires are independent from each other and are not bonded to each other. Further, the inner peripheral surface of the loop is smoothly curved at the base portion of the loop and has no recess into the stranded wires. The absence of the recess makes loosening less likely when attached to a mating material. Since the entire circumference of the loop is not melted, the loop can be formed using a small welding current.
H01R 11/11 - End pieces or tapping pieces for wires or cables, supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member
This sintered graphite bearing is cylindrical and comprises 60-84 mass% of spherical graphite, 5-22 mass% of amorphous carbon having an average particle diameter larger than that of the spherical graphite, and a resin carbide. When a sliding surface of the graphite sintered body is observed through an electron microscope, the occupied area ratio of the amorphous carbon is 3-20%. The amorphous carbon is larger in size than the spherical graphite, protrudes from the sliding surface of the bearing, and comes into point contact with a sliding counterpart to support sliding. The hardness of the bearing is high due to containing the spherical graphite as a main component, which makes it difficult for the amorphous carbon to fall off.
According to the present invention, the proportions of copper and carbon in a carbon brush are set such that the proportion of copper is 20-60 mass% and the total proportion of carbons including graphite and a carbon derived from a binder resin is 80-40 mass%. With respect to the RGB value obtained by taking an image of the brush surface in an unpolished state, the red component is 135 to 200 (inclusive), and the value ∆ obtained by subtracting the blue component from the red component of the RGB value is 35 to 100 (inclusive). This brush can achieve high conductivity even if the copper content is low.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
A carbon grounding brush has a sliding surface that slides on and grounds a driving shaft transmitting driving force and exposed to an insulating liquid. A slit is provided on the sliding surface, and at least one end of the slit is located on one side of the sliding surface. The slit introduces into the slit the insulating liquid pressed towards the sliding surface by the rotation of the driving shaft and discharges the insulating liquid from the one end of the slit. Thus, the contact resistance between the driving shaft and the sliding surface is made small, and electrical corrosion and electromagnetic noises are reduced.
H01R 39/64 - Devices for uninterrupted current collection
B60R 16/06 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for carrying-off electrostatic charges
5.
GRAPHITE BEARING AND METHOD FOR MANUFACTURING SAME
A graphite bearing according to the present invention comprises: 78-98 mass% carbon including carbon content in spherical graphite and an un-carbonized resin; 2-12 mass% of volatile content in the resin; and 0-10 mass% components other than the carbon and volatile content. The total of the carbon, the volatile content, and the components other than the carbon and volatile content totals 100 mass%. The graphite bearing can be manufactured to have a net shape or a near-net shape, and a treatment such as resin impregnation or metal impregnation is unnecessary. The graphite bearing exhibits minimal cracking when press-fitted to a housing, and has a high radial crushing strength.
F16C 33/16 - Sliding surface consisting mainly of graphite
C04B 35/532 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
The metal graphite grounding brush including silver is made in slide contact with a peripheral surface of an axle and grounds the axle. The mass ratio between silver and carbonaceous components including a volatile component in the brush is silver above 30% and up to 90% and carbonaceous components less than 70% and down to 10%. When the total of silver and carbonaceous components is made 100%, the volatile component is down to 2.0% and up to 15%. The brush grounds the axle reliably so that noise from a car radio is reduced and has a long service life and mechanical strength.
H01R 39/22 - Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
H01R 4/66 - Connections with the terrestrial mass, e.g. earth plate, earth pin
This carbon grounding brush is in sliding contact, at a sliding-contact surface, with a rotating shaft for drive power transmission that is soaked in an insulating liquid. A slit is provided in the sliding-contact surface, and at least one end of the slit is located at one edge of the sliding-contact surface. The insulating liquid, which is pressed in toward the sliding-contact surface by the rotation of the rotating shaft, is guided into the slit and escapes from one end of the slit. The insulating liquid, which is pressed in toward the sliding-contact surface of the brush by the rotating shaft, can escape through the slit. Thus, contact resistance between the rotating shaft and the sliding-contact surface is reduced, and the occurrence of electrolytic corrosion, electromagnetic noise, and the like can also be suppressed.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
B60K 17/06 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing
8.
METAL GRAPHITE GROUNDING BRUSH MAINLY COMPOSED OF SILVER AND METHOD FOR PRODUCING SAME
A metal graphite grounding brush mainly composed of silver according to the present invention grounds a shaft by being in sliding contact with the circumferential surface of the shaft. The mass proportion of the silver in the brush is more than 30% but not more than 90%; the mass proportion of a carbonaceous material containing a volatile component in the brush is less than 70% but not less than 10%; and if the total mass of the silver and the carbonaceous material is taken as 100%, the content of the volatile component is from 2.0% to 15%. This metal graphite grounding brush reliably grounds a shaft and suppresses noises and the like on a car radio, while having a long service life and good strength.
A brush for a motor for electrical equipment in an automobile includes a main brush portion containing carbon and an abrasive having a Vickers hardness higher than or equal to 10 GPa and lower than or equal to 14 GPa. The sliding noise of the brush is reduced in the brush for a motor for electrical equipment in an automobile.
H01R 39/26 - Solid sliding contacts, e.g. carbon brush
H02K 13/10 - Arrangements of brushes or commutators specially adapted for improving commutation
H01R 39/22 - Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
In this commutator, a metal riser piece is attached on a resin base, and a segment comprising a metal layer and a carbon layer is joined to the riser piece. The metal layer contains brass, tin and 0-5 mass% of carbon (exclusive of 5), and does not contain copper powder, and the metal layer is joined to the riser piece by soldering without a coating layer on the surface thereof. The segment can be joined to the riser piece without a coating layer.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
This brush of a motor for automotive electronics contains, in a main body of the brush, carbon and an abrasive material having a Vickers hardness of 10 to 14 GPa. Accordingly, the sliding noise of the brush is reduced in the brush of a motor for automotive electronics.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
H01R 39/22 - Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
A laminated carbon brush for a liquid pump motor slides in a liquid fuel on a disk-like commutator. The laminated carbon brush includes two layers of a lower resistivity layer and a higher resistivity layer. In both the lower resistivity layer and the higher resistivity layer, circular directional resistivities of the brush along a circular direction in the rotation of the commutator are higher than non-circular directional resistivities of the brush along a radial direction of the commutator and a perpendicular direction to the sliding surface of the commutator. A non-circular directional resistivity of the higher resistivity layer are higher than or equal to 90,000 μΩ·cm. No spark discharges occur if the fuel pump motor is operated to output a high power.
H02K 13/10 - Arrangements of brushes or commutators specially adapted for improving commutation
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
H01R 39/22 - Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
This laminate carbon brush for use in a liquid pump motor slides, in a liquid fuel, against a disc-shape commutator. The laminate carbon brush comprises two layers, a low resistivity layer and a high resistivity layer. In both the low resistivity layer and the high resistivity layer, the circumferential resistivity in the circumferential direction during rotation of the commutator is higher than the non-circumferential resistivity, which is the resistivity in the radial direction of the commutator and in the direction perpendicular to the sliding surface of the commutator, and the non-circumferential resistivity in the high resistivity layer is 90,000µΩ⋅cm or greater. In this way, no spark discharge occurs even when the fuel pump motor is actuated at high output.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
H02K 13/10 - Arrangements of brushes or commutators specially adapted for improving commutation
15.
CARBON BRUSH FOR FUEL PUMP AND METHOD FOR MANUFACTURING SAME
Provided is a carbon brush for a fuel pump. The carbon brush comprises a brush main body and a lead wire connected to the brush main body. The brush main body includes carbon and polyether ether ketone as main components. Abnormal wear is not generated even when a fuel pump motor is operated at a high voltage.
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
patents
