Unlock instant, AI-driven research and patent intelligence for your innovation.

Sliding contact parts, DC motors and generators using sliding contact parts

A sliding contact and sliding contact surface technology, applied in contact parts, circuits, current collectors, etc., can solve the problems of sliding speed, sliding surface pressure increase, material softening, temperature rise, etc., and achieve the effect of suppressing heat generation

Active Publication Date: 2016-12-14
NISSAN MOTOR CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the conductive member disclosed in the above-mentioned Patent Document 1 is used as a brush or a commutator of a driving motor or a generator, in addition to the increase in the power applied to the brush, as the sliding speed of the brush becomes High speed, sliding speed and sliding surface pressure also increase
[0006] Therefore, the heat generation of the brush increases to cause thermal softening of the material, and as a result, the wear of the brush or the commutator as the counterpart material increases.
[0007] In addition, there is a problem that the heat generated in the brushes and the commutator cannot be sufficiently thermally diffused in the sliding surface, and the temperature rises locally, causing the material to soften.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sliding contact parts, DC motors and generators using sliding contact parts
  • Sliding contact parts, DC motors and generators using sliding contact parts
  • Sliding contact parts, DC motors and generators using sliding contact parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] [material to use]

[0050] A sliding contact part in which a compressed powder portion formed by bonding conductive diamond powder with cobalt (conductive binder) is formed on the sliding contact surface.

[0051] [Manufacturing method]

[0052] The pressed powder part is manufactured by sintering method.

[0053] [Evaluation method]

[0054] figure 2 It is an explanatory drawing showing the first evaluation method, 1 is a ball made of copper, and 2 is the sliding contact part of this invention. in addition, figure 2 The arrow marks shown indicate the rolling direction of the ball 1 .

[0055] use figure 2 The indicated ball-on-disk friction and wear method evaluates the amount of wear (300min).

[0056] [Evaluation results]

[0057] As shown in Table 1, the wear resistance was remarkably improved, and the aggressiveness to the opposing material (ball 1) was also low.

[0058] [Table 1]

[0059]

Embodiment 2

[0061] [material to use]

[0062] A sliding contact part with a powder compact formed by bonding conductive diamond powder with cobalt to the sliding contact surface.

[0063] [Manufacturing method]

[0064] The pressed powder part is manufactured by sintering method.

[0065][Evaluation method]

[0066] image 3 It is an explanatory diagram showing the second evaluation method, 3 is a copper electrode, 4 is a sliding contact member of the present invention, and 5 is a DC power supply for conducting electricity between them. in addition, image 3 Arrow marks shown indicate the direction of movement of the electrode 3 .

[0067] use image 3 The electrical discharge machining shown evaluates the electrical discharge resistance (wear amount).

[0068] [Evaluation results]

[0069] As shown in Table 2, the wear resistance was remarkably improved, and the aggressiveness to the counterpart (electrode 3) was also low.

[0070] [Table 2]

[0071]

Embodiment 3

[0073] [material to use]

[0074] A sliding contact part with a powder compact formed by bonding conductive diamond powder with cobalt to the sliding contact surface.

[0075] [Manufacturing method]

[0076] The pressed powder part is manufactured by sintering method.

[0077] [Evaluation method]

[0078] Figure 4 It is an explanatory diagram showing the third evaluation method, 6 is a copper ball, 7 is a sliding contact member of the present invention, and 8 is a DC power supply for passing electricity between them. in addition, Figure 4 The arrow marks shown indicate the rolling direction of the ball 6 .

[0079] use Figure 4 The energized slide test shown evaluates the amount of wear.

[0080] [Evaluation results]

[0081] As shown in Table 3, the wear resistance was remarkably improved, and the aggressiveness against the opponent (ball 6) was also low.

[0082] [table 3]

[0083]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electrical resistivityaaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a sliding contact part, a direct current motor and a generator using the sliding contact part. A compressed powder portion (11a, 12a) comprising conductive diamond and a conductive adhesive is arranged on at least the mutual sliding contact surface of either or both of the two sliding contact members (11, 12) that are in sliding contact with each other. , the sliding contact parts (11, 12) are suitable for DC motors and generators.

Description

technical field [0001] The present invention relates to a sliding contact part, a DC motor and a generator using the sliding contact part. Background technique [0002] As such prior art, there is a structure disclosed in Patent Document 1 under the name of "conductive member". [0003] The conductive member disclosed in Patent Document 1 is electrically connected by bringing a plurality of conductive members into contact, and at least one of the conductive members has a carbon fiber containing conductive hard carbon at a portion in contact with the other conductive member. film, forming the key contacts. [0004] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2002-25346 [0005] However, when the conductive member disclosed in the above-mentioned Patent Document 1 is used as a brush or a commutator of a driving motor or a generator, in addition to the increase in the power applied to the brush, as the sliding speed of the brush becomes At high speed, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K13/00H01B1/06H01R13/03H01R39/20
CPCH01R39/20H02K13/006H02K13/10
Inventor 上原义贵三输纮敬南部俊和野口与四郎
Owner NISSAN MOTOR CO LTD