Conductive carbon brush assembly for high rotating speed

Abstract

The utility model provides a conductive carbon brush assembly used for a high rotating speed, comprising a housing, a conductive ring and a plurality of carbon fiber bundles, the conductive ring is sleeved outside the plurality of carbon fiber bundles and fastens the plurality of carbon fiber bundles, the conductive ring is clamped in the housing, and the conductive ring is fixed on the housing. The shell comprises a connecting end used for being connected with an output shaft of a driving motor, and the connecting end is provided with an inner hole allowing one end of each carbon fiber bundle to extend out. Aiming at the defects in the prior art, the utility model provides the conductive carbon brush assembly for the high rotating speed, and the conductive carbon brush assembly is high in stability and wear resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electrically conductive carbon brush assemblies for high speed. BACKGROUND

[0002] The main role of carbon brush includes the external current (field current) through carbon brush to the rotating rotor (input current), the static charge on the large shaft is introduced into ground through carbon brush (grounding carbon brush) (output current), changes the direction of current (in commutator motor, brush also plays the role of commutation) and the large shaft (ground) is introduced to protective device for rotor grounding protection and measures rotor positive and negative voltage to ground, but the prior art mainly uses graphite carbon brush, uses carbon brush one side and shaft contact, the other end is grounded, and the electric lead into the ground can effectively prevent the generation of shaft voltage, in this process, graphite carbon brush can exist reliability durability problem, with the accumulation of time, carbon brush exists the situation of abrasion, and the dust generated in the abrasion process can drop into oil-cooled motor and cause lubricating oil to deteriorate, and the breakdown voltage of oil product is reduced, at the same time, carbon dust can cause the risk of short circuit of electronic components in motor. Or use conductive ring, one side and shaft contact, the other end is installed on shell (grounded) can, lead into the ground can effectively prevent the generation of shaft voltage, but the cost is higher, and shell and shaft need to be adjusted. At the same time, the effect is unstable in oil-cooled motor, because the insulation characteristics of lubricating oil will play a certain insulation role under high-speed running condition, so the problem of electric corrosion under high-speed running condition will still exist. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides an electrically conductive carbon brush assembly for high speed, which has strong stability and wear resistance.

[0004] To achieve the above purpose, the utility model provides an electrically conductive carbon brush assembly for high speed, which comprises a shell, a conductive ring and a plurality of carbon fiber bundles, the conductive ring is sleeved outside the plurality of carbon fiber bundles and fastens the plurality of carbon fiber bundles, the conductive ring is clamped in the shell, the shell comprises a connecting end for connecting the output shaft of the driving motor, and the connecting end has an inner hole for the one end of the plurality of carbon fiber bundles to extend out.

[0005] The shell, the conductive ring and the carbon fiber bundles are arranged, the conductive ring is sleeved outside the carbon fiber bundles and fastens the carbon fiber bundles, the conductive ring can conduct electricity while fastening the carbon fiber bundles, high conductivity is ensured, the conductive ring is clamped in the shell, the connecting end for connecting the output shaft of the driving motor is arranged on the shell, one end of the carbon fiber bundles can extend out through the inner hole of the connecting end, the carbon fiber bundles are used as carbon brushes, the high strength and high wear resistance of the fiber bundle material are utilized, wear of the carbon fiber bundles is greatly reduced when the driving motor is operated at high speed, stability is better, and service life is longer.

[0006] The conductive ring is further provided as being made of red copper material, and the conductive ring is tightly clamped outside the carbon fiber bundles.

[0007] The conductive ring is further provided as being made of red copper material, and the conductive ring is tightly clamped outside the carbon fiber bundles.

[0008] The shell further comprises a mounting seat and a steel sleeve, the connecting end and the inner hole are formed by the mounting seat, the mounting seat further comprises a mounting groove and a ring shoulder, the ring shoulder separates the mounting groove and the connecting end, the steel sleeve comprises a limiting groove, the conductive ring is sleeved in the limiting groove, the steel sleeve is interference-fitted in the mounting groove, and the steel sleeve and the conductive ring are both in abutting engagement with the ring shoulder.

[0009] The mounting seat and the steel sleeve are arranged in the shell, the limiting groove is arranged on the steel sleeve, the conductive ring is sleeved in the limiting groove, the mounting groove and the ring shoulder are arranged on the mounting seat, the steel sleeve is interference-fitted in the mounting seat, and the steel sleeve and the conductive ring are both in abutting engagement with the ring shoulder.

[0010] The connecting end further comprises a gradually decreasing guide section.

[0011] The guide section is arranged in the connecting end, and the guide section is convenient for guiding during installation.

[0012] The connecting end further comprises a bowl-shaped contact section, and the contact section is arranged between the guide section and the inner hole.

[0013] The contact section is arranged in the connecting end, and the contact section is convenient for interference-fitting of the carbon fiber bundles and the conductive column. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model embodiment;

[0015] Figure 2 It is the internal structure schematic view of the utility model embodiment;

[0016] Figure 3 It is the utility model embodiment Figure 2 The enlarged view of a part in the middle;

[0017] Figure 4 It is the structure schematic view of the mounting seat in the utility model embodiment;

[0018] Among them: shell 1;Mounting seat 11;Connecting end 111;Inner hole 112;Mounting groove 113;Ring shoulder 114;Guide section 115;Contact section 116;Steel sleeve 12;Limiting groove 121;Conductive ring 2;Carbon fiber bundle 3. Specific implementation

[0019] The utility model discloses a kind of conductive carbon brush assemblies for high speed implementation, as shown in Figures 1-4 As shown: including shell 1, conductive ring 2 and several carbon fiber bundles 3, the specification of the carbon fiber bundle 3 in the embodiment is T700, 24K, the conductive ring 2 is sleeved on the outside of several carbon fiber bundles 3 and forms fastening to several carbon fiber bundles 3, the conductive ring 2 is clamped in shell 1, the shell 1 includes mounting seat 11 and steel sleeve 12, the mounting seat includes the connecting end 111 for connecting the output shaft of driving motor, the connecting end 111 is provided with the inner hole 112 that can be used for the one end of several carbon fiber bundles 3 to stretch out.

[0020] The conductive ring 2 is composed of T2 red copper material, and the conductive ring 2 is tightly clamped on the outside of the several carbon fiber bundles 3.

[0021] The mounting seat 11 further includes mounting groove 113 and ring shoulder 114, the ring shoulder 114 separates mounting groove 113 and connecting end 111, the steel sleeve 12 includes limiting groove 121, the conductive ring 2 is sleeved in the limiting groove 121, the steel sleeve 12 is interference-inserted in the mounting groove 113, and the steel sleeve 12 and the conductive ring 2 are all in abutment with the ring shoulder 114.

[0022] The connecting end 111 includes gradually decreasing guide section 115.

[0023] The connecting end 111 includes bowl-shaped contact section 116.

[0024] The above examples are only one of the preferred specific examples of the present application, and the usual changes and replacements made by those skilled in the art within the technical scheme of the present application are included in the protection scope of the present application.

Claims

1. An electrically conductive carbon brush assembly for high rotational speeds, characterized by: The shell, the conductive ring and the carbon fiber bundles are included, the conductive ring is sleeved outside the carbon fiber bundles and fastens the carbon fiber bundles, the conductive ring is clamped in the shell, the shell includes a connecting end for connecting the output shaft of the driving motor, and the connecting end is provided with an inner hole for the one end of the carbon fiber bundles to extend out.

2. The electrically conductive carbon brush assembly for high rotational speeds according to claim 1, characterized in that: The conductive ring is made of red copper material, and the conductive ring is tightly clamped outside the carbon fiber bundles.

3. The electrically conductive carbon brush assembly for high rotational speeds according to claim 2, characterized in that: The shell includes a mounting seat and a steel sleeve, the connecting end and the inner hole are formed by the mounting seat, the mounting seat further includes a mounting groove and a ring shoulder, the ring shoulder separates the mounting groove and the connecting end, the steel sleeve includes a limiting groove, the conductive ring is sleeved in the limiting groove, the steel sleeve is interference-fitted in the mounting groove, and the steel sleeve and the conductive ring are both in abutting engagement with the ring shoulder.

4. Electrically conductive carbon brush assembly for high rotational speeds according to claim 1 or 2 or 3, characterized in that: The connecting end includes a gradually decreasing guide section.

5. The electrically conductive carbon brush assembly for high rotational speeds according to claim 4, characterized in that: The connecting end includes a bowl-shaped contact section, and the contact section is arranged between the guide end and the inner hole.

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