BATTERY CHARGERS

• US 20150244197A1
• Filed: 02/18/2015
• Published: 08/27/2015
• Est. Priority Date: 02/26/2014
• Status: Active Grant

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Taga, Hideyuki, TABUCHI, Yasuhiro, Sakai, Mamoru, Naito, Akira
• Granted Patent: US 9,634,503 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

In one aspect according to the present teachings, a battery charger may include a body housing and a power supply connector disposed at a lateral side of the body housing. The power supply connector can supply a DC power to an external device.

Claims

1. A battery charger usable for recharging a battery pack, comprising:

a body housing including an upper side, a lower side, and a lateral side;

a battery mount portion disposed at the upper side of the body housing,

wherein the battery mount portion is configured such that (a) the battery pack is moved relative to the battery mount portion in a battery mounting direction for mounting to the battery mount portion, and (b) the battery pack is moved relative to the battery mount portion in a removing direction for removing from the battery mount portion; and

a power supply connector capable of outputting a DC electric power and disposed at at least one of a first position and a second position of the lateral side of the battery housing, the first position being located on the side of the mounting direction, and the second position being located on the side of the removing direction.

2. The battery charger according to claim 1, wherein:

the battery mount portion is configured such that the battery pack is mounted to and removed from the battery mount portion as the battery pack moves in the mounting direction and the removing direction along the upper side of the battery pack.

3. The battery charger according to claim 1, wherein:

the power supply connector is disposed at the first position; and

the mounting direction and the removing directions are opposite to each other

4. The battery charger according to claim 1, further comprising an AC power cord extending outward from the body housing.

5. The battery charger according to claim 4, wherein:

the power supply connector is disposed at the first position; and

the first position is proximal to the AC power cord with respect to a direction perpendicular to the mounting direction of the battery pack.

6. The battery charger according to claim 4, wherein:

the power supply connector is disposed at the second position; and

the second position is proximal to the AC power cord with respect to a direction perpendicular to the removing direction of the battery pack.

7. The battery charger according to claim 4, wherein:

the lateral side includes a front side, a rear side, a right side and a left side;

the first position is located at the front side;

the second position is located at the rear side; and

the AC power cord extends from one of the right side and the left side.

8. The battery charger according to claim 1, wherein:

the body housing comprises an upper housing and a lower housing joined together at a joint plane, and

the power supply connector is disposed proximal to or across the joint plane.

9. The battery charger according to claim 1, further comprising:

a power source circuit board connected to the power supply connector, wherein the power source circuit board and the power supply connector are parts of a power supply device;

a circuit board accommodation space defined in the body housing and configured to accommodate the power source circuit board;

a connector accommodation space defined in the body housing and configured to accommodate the power supply connector; and

a waterproof wall portion disposed within the body housing and configured to partition between the circuit board accommodation space and the connector accommodation space in a waterproof manner.

10. The battery charger according to claim 9, further comprising a waterproof cap, wherein the waterproof cap comprises:

a body portion capable of closing the power supply connector in a water-tight manner; and

a support portion configured to support the body portion with respect to the body housing, wherein;

the support portion is capable of being inserted into a support hole formed in the body housing to extend therethrough; and

the support portion includes an outer seal portion and an inner seal portion configured to engage the support hole from an outer side and an inner side of the support hole so as to close the support hole in a water-tight manner.

11. A battery charger usable for recharging a battery pack, comprising:

a body housing including an upper side, a lower side, a front side, a rear side, a right side and a left side; and

a battery mount portion disposed at the upper side of the body housing,

wherein the battery mount portion is configured such that (a) the battery pack is moved relative to the battery mount portion in a battery mounting direction from the rear side toward the front side of the body housing for mounting to the battery mount portion, and (b) the battery pack is moved relative to the battery mount portion in a removing direction from the front side toward the rear side of the body housing for removing from the battery mount portion; and

a power supply connector capable of outputting a DC electric power and disposed at at least one of the front side and the rear side of the body housing.

12. A battery charger usable for recharging a batter pack, comprising:

a body housing;

a power supply device comprising a power source circuit board and a power supply connector;

a circuit board accommodation space defined in the body housing and configured to accommodate the power source circuit board;

a connector accommodation space defined in the body housing and configured to accommodate the power supply connector; and

a waterproof wall portion disposed within the body housing and configured to partition between the circuit board accommodation space and the connector accommodation space in a waterproof manner.

13. The battery charger according to claim 12, wherein the power supply device is configured to supply a DC power.

14. The battery charger according to claim 12, wherein:

the body housing includes an upper housing and a lower housing joined together to form the body housing;

the waterproof wall portion includes an upper waterproof wall portion disposed at the upper housing and a lower waterproof wall portion disposed at the lower housing; and

at least a part of the upper waterproof wall portion and at least a part of the lower waterproof wall portion are overlapped with each other in a vertical direction.

15. The battery charge according to claim 14, wherein:

the at least a part of the upper waterproof wall portion is positioned on the side of the power supply connector with respect to the at least a part of the lower waterproof wall portion.

16. The battery charger according to claim 12, wherein a water discharge hole is formed in a part of the body housing defining a bottom of the connector accommodation space.

17. The battery charger according to claim 12, further comprising a waterproof cap, wherein the waterproof cap comprises:

a body portion capable of closing the power supply connector in a water-tight manner; and

a support portion configured to support the body portion with respect to the body housing, wherein;

the support portion is capable of being inserted into a support hole formed in the body housing to extend therethrough; and

the support portion includes an outer seal portion and an inner seal portion configured to engage the support hole from an outer side and an inner side of the support hole so as to close the support hole in a water-tight manner.

18. The battery charger according to claim 17, wherein:

the body housing includes an outer side recess and an inner side recess respectively formed along an outer side open edge and an inner side open edge of the support hole; and

the outer side recess and the inner side recess are configured to be respectively fitted with the outer seal portion and the inner seal portion of the support portion.

19. The battery charger according to claim 17, wherein at least the support portion of the waterproof cap has elasticity.

20. The battery charger according to claim 17, wherein the support hole is formed in communication with the connector accommodation space.