Novel manufacturing method of carbon commutator and product thereof
A technology of carbon commutator and manufacturing method, which is applied in the new manufacturing field of carbon commutator, can solve the problems of increased spark level, weak and weak welding of connecting substrates, easy occurrence of desoldering, etc.
Inactive Publication Date: 2011-03-30
钱永球
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Problems solved by technology
[0002] At present, the commutator of automobile fuel pump motor is mainly made of copper commutator or brazed copper parts of carbon graphite sheet, but in actual use, when the motor is rotating, the brush frequently commutates on the surface of the commutator, Spark heat is generated by friction. At this time, the deformation of the commutator in the radial direction and between adjacent sheets is large, and the spark level also becomes larger. The welding of the carbon commutator connecting the substrate and the carbon sheet is prone to desoldering; or The connection substrate is not strong due to welding, and the long-term corrosion of gasoline leads to open welding, carbon sheet and connection substrate and other factors affect the normal operation of the motor
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[0013] The carbon commutator of the present invention is composed of a carbon alloy layer, a copper metal skeleton and an insulator to form a whole with corresponding multipoles.
[0014] 1. First punch the silver-containing copper sheet material into the silver-copper skeleton substrate 10 according to the multi-polar requirements, and treat the surface with carbon-silver-copper alloy. As shown in Figure-1, multiple carbon alloy insert holes 11 are designed to make the connection firm, the interlayer resistance is small, and the electrical conductivity is superior.
[0015] A plurality of insulator diversion holes 12 are designed on the silver-copper skeleton substrate 10 to connect the carbon commutator insulator with the outer insulator to protect the carbon-copper connection firmly.
[0016] In order to ensure the connection between the multi-pole rotor of the motor and the copper wire, a plurality of copper wire hanging parts 13 are designed on the silver-copper skeleton ...
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The invention relates to a carbon commutator which compounds a carbon alloy layer, a copper metal framework and an insulator into a whole with corresponding multipole. The invention discloses a novel manufacturing method of the carbon commutator, mainly relating to the manufacturing method for manufacturing copper substrate structural members and injection molding of the carbon commutator. The manufacturing method comprises the following steps of: punching silver-copper plates for molding according to the requirements of the multipole, designing a plurality of holes for inlaying carbon alloy layer powder and a plurality of holes for diverting the insulator on a silver-copper framework substrate, designing projecting parts and grooves for fixing a carbon alloy powder layer and an insulating injection molding body, hot-pressing (or vacuum sintering) carbon alloy powder bodies and insulator materials on the silver-copper plates at the temperature of 200 to 680 DEG C, and then electroplating the overall parts through a slotter of the commutator and a conventional process so as to form the carbon commutator having the advantages of electric conduction, abrasion resistance, high temperature resistance, corrosion resistance, high strength and long service life.
Description
technical field [0001] The novel manufacturing method of the carbon commutator of the present invention relates in particular to the manufacturing method of the copper substrate structure and injection molding of the carbon commutator. Background technique [0002] At present, the commutator of automobile fuel pump motor is mainly made of copper commutator or brazed copper parts of carbon graphite sheet, but in actual use, when the motor is rotating, the brush frequently commutates on the surface of the commutator, Spark heat is generated by friction. At this time, the deformation of the commutator in the radial direction and between adjacent sheets is large, and the spark level also becomes larger. The welding of the carbon commutator connecting the substrate and the carbon sheet is prone to desoldering; or The connection substrate is not strong due to welding, and the long-term corrosion of gasoline leads to open welding, carbon sheet and connection substrate and other fac...
Claims
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IPC IPC(8): H01R39/04H01R43/06
Inventor 钱永球
Owner 钱永球