التفاصيل البيبلوغرافية
| العنوان: |
CIRCUIT BREAKER |
| Document Number: |
20120152705 |
| تاريخ النشر: |
June 21, 2012 |
| Appl. No: |
13/381290 |
| Application Filed: |
June 01, 2010 |
| مستخلص: |
Provided is a circuit breaker capable of minimizing a change in the structure of, for example, a case even when a material (thermal conductivity) forming a stud is changed. A stud (20) includes a base portion (21) that is provided in a case (2) and a protruding portion (22) that protrudes from the case (2). The cross-sectional area of the protruding portion (22) is more than that of the base portion (21). When the cross-sectional area of the protruding portion (22) is more than that of the base portion (21) in the stud (20), the thermal conductivity of the protruding portion (22) increases and it is possible to increase the thermal conductivity from the protruding portion (22) to an external conductor connected to the stud. In addition, since the surface area of the protruding portion (22) increases, the amount of heat dissipated from the protruding portion (22) increases. In this case, since the dimensions of the base portion (21) inserted into a stud insertion hole (2b) of the case (2) do not vary, it is not necessary to change the dimensions of the insertion hole (2b) of the case (2). Therefore, it is possible to minimize a change in the structure of a component even when the material forming the stud is changed. |
| Inventors: |
Nakano, Masaaki (Kounosu-shi, JP); Toyama, Kentaro (Saitama-shi, JP); Osawa, Makoto (Otawara-shi, JP) |
| Assignees: |
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD (Tokyo, JP) |
| Claim: |
1. A circuit breaker comprising: a breaking mechanism portion breaking a circuit with a bimetal when a current with a predetermined value or more flows; a terminal connected to a power supply side or a load side of the breaking mechanism portion; a columnar shaped stud having an end surface fixed in a state contacting the terminal and connected to a power-supply-side line or a load-side line; and a case accommodating the breaking mechanism portion, the terminal, and a portion of the stud, wherein the stud includes a base portion accommodated in the case and a protruding portion protruding from the case, and a cross-sectional area of the protruding portion is more than a cross-sectional area of the base portion. |
| Claim: |
2. A circuit breaker according to claim 1, wherein the stud is formed by bonding a first member forming at least the base portion and made of a material with a relatively high thermal conductivity, and a second member connected to the first member and made of a material with a relatively low thermal conductivity. |
| Claim: |
3. A circuit breaker according to claim 2, wherein a bonding between the first member and the second member is one of soldering, diffusion bonding, or welding. |
| Claim: |
4. A circuit breaker according to claim 1, wherein the first member and the second member are connected to each other by fastening the first member with a fastening member fastening the terminal and the stud. |
| Current U.S. Class: |
200/293 |
| Current International Class: |
01 |
| رقم الانضمام: |
edspap.20120152705 |
| قاعدة البيانات: |
USPTO Patent Applications |