GB1449250A - - Google Patents
Info
- Publication number
- GB1449250A GB1449250A GB5301273A GB5301273A GB1449250A GB 1449250 A GB1449250 A GB 1449250A GB 5301273 A GB5301273 A GB 5301273A GB 5301273 A GB5301273 A GB 5301273A GB 1449250 A GB1449250 A GB 1449250A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- polepieces
- sintering
- nov
- grooves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005245 sintering Methods 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
1449250 Making magnets ROBERT BOSCH GmbH 15 Nov 1973 [16 Nov 1972] 53012/73 Heading B3A [Also in Division H2] A field magnet 10 for a D.C. machine is constructed by rough pressing and partially sintering a suitable metal to form two shaped polepieces 12, 13 for partially surrounding an armature (18, Fig. 2, not shown), and then inserting the magnetic pole ends of a permanent magnet 11 into cavities 21, 22 in the polepieces and rigidly fixing the ends therein by sintering, the sintering causing shrinkage of the polepieces on to the magnet. The magnet 11 is preferably of Ainico, and in the motor arrangement described has grooves 23 in one face, the polepieces 12, 13 being subjected to pressing to cause the metal to be pushed into the grooves of the magnet to engage therewith (as in Fig. 2). A further motor (Fig. 3, not shown) includes two permanent magnets.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722256138 DE2256138A1 (en) | 1972-11-16 | 1972-11-16 | ELECTRIC DC MACHINE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1449250A true GB1449250A (en) | 1976-09-15 |
Family
ID=5861874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5301273A Expired GB1449250A (en) | 1972-11-16 | 1973-11-15 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2256138A1 (en) |
| FR (1) | FR2207382B3 (en) |
| GB (1) | GB1449250A (en) |
-
1972
- 1972-11-16 DE DE19722256138 patent/DE2256138A1/en active Pending
-
1973
- 1973-10-22 FR FR7337638A patent/FR2207382B3/fr not_active Expired
- 1973-11-15 GB GB5301273A patent/GB1449250A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2256138A1 (en) | 1974-05-30 |
| FR2207382B3 (en) | 1976-09-17 |
| FR2207382A1 (en) | 1974-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |