IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0074492
(2011-03-29)
|
등록번호 |
US-8981719
(2015-03-17)
|
우선권정보 |
JP-2010-085570 (2010-04-01) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Wenderoth, Lind & Ponack, LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
5 |
초록
▼
A battery pack charger including a case (1) having an attachment section (2) where a battery pack (30) can be attached in a detachable manner, and a plurality of connecting terminals (3) disposed in an exposed manner in the attachment section to connect with external terminals (33) on the battery pa
A battery pack charger including a case (1) having an attachment section (2) where a battery pack (30) can be attached in a detachable manner, and a plurality of connecting terminals (3) disposed in an exposed manner in the attachment section to connect with external terminals (33) on the battery pack. The connecting terminals are disposed in approximately vertical orientation in a plurality of approximately parallel rows. The case has terminal through-holes (52) opened through the case between adjacent connecting terminals. Even if there is ingress of foreign material, such as dust and dirt, between the connecting terminals, that material can fall through the holes in the case. Foreign material collection between the connecting terminals can be avoided, and the battery pack charger has the positive feature that unintended conduction, such as leakage current and short-circuit, can be avoided.
대표청구항
▼
1. A battery pack charger for charging a chargeable battery pack attached in a detachable manner comprising: a case forming an attachment section capable of attaching the battery pack in a detachable manner at a first side of the case;a circuit board provided on a second side of the case in a non-ov
1. A battery pack charger for charging a chargeable battery pack attached in a detachable manner comprising: a case forming an attachment section capable of attaching the battery pack in a detachable manner at a first side of the case;a circuit board provided on a second side of the case in a non-overlapping manner with the first side, the second side being aligned with the first side;a battery pack charging circuit mounted on the circuit board; anda plurality of connecting terminals disposed in an exposed manner in the attachment section to connect with external terminals on the battery pack,wherein the connecting terminals are parallel to each other and are disposed in an approximately vertical orientation, andwherein the case has terminal through-holes opened through the case between adjacent connecting terminals,wherein the attachment section is configured with attachment guides to guide battery pack guides established on the battery pack and attach the battery pack in the attachment section,wherein the attachment section is formed with a cavity cross-section in the upper surface of the case,wherein the attachment guides are formed so as to protrude from interior walls on both sides of the attachment section cavity,wherein attachment section through-holes are formed through the attachment section following the outlines of the attachment guides and having more area than the attachment guides,wherein the attachment section through-holes are opened in a direction approximately parallel to the opening direction of the terminal through-holes, andwherein the attachment section through-holes are opened in a slit shape, and the attachment guides are disposed in a manner stacked above the open areas of the attachment section through-holes. 2. The battery pack charger as cited in claim 1, wherein the attachment section through-holes are formed as a pair of through-holes that sandwich the connecting terminals, and the attachment section through-holes are positioned to at least partially overlap with the terminal through-holes in the lengthwise direction. 3. The battery pack charger as cited in claim 1 wherein the connecting terminals are mounted in a terminal holder, and the terminal holder is connected to the case in a floating configuration. 4. The battery pack charger as cited in claim 3 wherein bosses are provided in the case, and boss insertion holes with an inside diameter greater than the outside diameter of the bosses are opened through the terminal holder in positions corresponding to the boss locations; and the bosses are inserted in the boss insertion holes with intervening flexible washers so that the terminal holder is joined to the case in a floating configuration. 5. The battery pack charger as cited in claim 1 wherein the plurality of connecting terminals have a flat-plate shape and are disposed in parallel orientation, and the flat-plate connecting terminals are disposed perpendicular to the bottom surface of the attachment section extending in a direction parallel to the battery pack detachment sliding direction. 6. The battery pack charger as cited in claim 1 wherein the plurality of connecting terminals are provided with positive and negative charging terminals disposed on both sides, and non-charging terminals disposed between the charging terminals. 7. The battery pack charger as cited in claim 1, wherein electrical specifications are determined by the number of rechargeable batteries included in the battery pack. 8. The battery pack charger as cited in claim 1, wherein a consolidated through-hole is formed in a bottom surface of the case, and the consolidated through hole is positioned and sized so as to be communicated with exit-sides of all of the terminal through-holes. 9. The battery pack charger as cited in claim 8, wherein the consolidated through-hole is sized to encompass all of the terminal through-holes in a vertical direction. 10. The battery pack charger as cited in claim 8, wherein the consolidated through-hole directly underlies the terminal through-holes, and the size of the consolidated through-hole is larger than a combined size of the terminal through-holes. 11. A battery pack charger for charging a chargeable battery pack attached in a detachable manner, the battery pack charger comprising: a case forming an attachment section capable of attaching the battery pack in a detachable manner at a first side of the case;a circuit board provided on a second side of the case in a non-overlapping manner with the first side, the second side being aligned with the first side;a battery pack charging circuit mounted on the circuit board; anda plurality of connecting terminals disposed in an exposed manner in the attachment section to connect with external terminals on the battery pack,wherein the connecting terminals are parallel to each other and are disposed in an approximately vertical orientation,wherein the case has terminal through-holes opened through the case between adjacent connecting terminals,wherein the attachment section is configured with attachment guides to guide battery pack guides established on the battery pack and attach the battery pack in the attachment section,wherein the attachment section is formed with a cavity cross-section in the upper surface of the case,wherein the attachment guides are formed so as to protrude from interior walls on both sides of the attachment section cavity,wherein attachment section through-holes are formed through the attachment section following the outlines of the attachment guides and having more area than the attachment guides,wherein the attachment section through-holes are opened in a direction approximately parallel to the opening direction of the terminal through-holes,wherein the battery pack charger is configured to form the attachment guides with sizes adjusted to correspond to battery pack charger electrical specifications while keeping the attachment section through-holes a constant size, andwherein battery pack guides on a battery pack, electrically compatible with the battery pack charger, are shaped to fit with the attachment guides so that the battery pack can be attached in the attachment section. 12. The battery pack charger as cited in claim 11 wherein the battery pack charger is configured to make the length of the attachment guides according to the position of battery pack identifier ribs established in the battery pack guides, when a battery pack with compatible electrical specifications is attached to the battery pack charger, the ends of the attachment guides contact the battery pack identifier ribs allowing the battery pack to be attached in the attachment section, andwhen an attempt is made to attach a battery pack that is not electrically compatible with the battery pack charger, interference between the battery pack identifier ribs and the ends of the attachment guides make battery pack guide and attachment guide insertion impossible. 13. The battery pack charger as cited in claim 12 wherein the case is made up of an upper case and a lower case, and the attachment guides are formed in the lower case. 14. The battery pack charger as cited in claim 13 wherein the battery pack charger is configured to form the lower case with a mold that has a mold-cavity insert, and attachment guides having different lengths can be formed by changing the mold-cavity insert. 15. The battery pack charger as cited in claim 11, wherein the case is formed with a circuit board mounting rib for mounting the circuit board,wherein the circuit board is made with a circuit board slit in a position corresponding to the circuit board mounting rib to allow its insertion,wherein the positions of the circuit board mounting rib and the circuit board slit are set to allow a circuit board to be mounted in a case provided with attachment section attachment guides sized for a battery pack with electrical specifications compatible with the charging circuit on the circuit board, andwherein the circuit board can be mounted in the case when the charging circuit on the circuit board has electrical specifications compatible with the battery pack that fits in the attachment guides in the case, while a circuit board having electrical specifications compatible with a different battery pack cannot be mounted in the case. 16. The battery pack charger as cited in claim 15 wherein the battery pack charger is configured with a mold-cavity insert in the mold that forms the case, and the circuit board mounting rib can be formed in different positions by changing the insert in the mold-cavity.
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