Battery connection for a power tool

• US 8,852,776 B2
• Filed: 02/11/2009
• Issued: 10/07/2014
• Est. Priority Date: 02/11/2008
• Status: Active Grant

• Current Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Original Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Inventors: Bublitz, Scott D.
• Primary Examiner(s): Gilliam, Barbara
• Assistant Examiner(s): SCULLY, STEVEN M
• Application Number:
  US12/369,077
• Publication Number:
  US 20090202894A1
• Time in Patent Office: 2,064 Days
• Field of Search: 429/99
• US Class Current: 429/99
• CPC Class Codes: H01M 50/202 Casings or frames around the primary casing of a single cell or a single battery
• CPC Class Codes: H01M 50/244 Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
• CPC Class Codes: H01M 50/247 specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A power tool includes a housing configured to house a motor. The housing defines a body axis and has a hand grip for a user, wherein the hand grip is positioned between a first end and a second end of the housing. The power tool further includes a tool element positioned at the first end of the housing and a battery connection port adapted to receive a battery pack. The battery connection port defines a removal axis for the battery pack and includes a first portion located at one end of the removal axis and a second portion located at an other end of the removal axis opposite the first portion. The second portion is positioned closer to the tool end than the first portion.

Claims

1. A power tool comprising:

a motor;

a housing configured to house the motor, the housing defining a body axis and having a hand grip, wherein the hand grip and the motor are positioned between a first end and a second end of the housing and the body axis extends through the hand grip, the motor, and the first end and the second end of the housing;

a tool element positioned at the first end of the housing, the tool element pivotable about a tool axis;

an actuator adjacent the hand grip and configured to operate the motor to pivot the tool element about the tool axis;

a battery pack; and

a battery connection port positioned at the second end of the housing and adapted to receive the battery pack;

wherein the battery connection port defines a removal axis for the battery pack,

wherein the battery connection port includes a first portion located at one end of the removal axis and a second portion located at an other end of the removal axis opposite the first portion,

wherein the second portion is positioned closer to the first end of the housing than the first portion such that the removal axis forms an angle less than ninety degrees with respect to the body axis,

wherein the tool axis and the body axis lie in a common plane, the body axis dividing the plane into an upper portion and a lower portion, the lower portion intersecting the tool element and the upper portion intersecting the battery pack, and

wherein the second portion of the battery connection port intersects the lower portion of the plane.

2. The power tool of claim 1 wherein the battery pack includes a fuel gauge that is readily visible to the user during operation of the power tool when the battery pack is coupled to the battery connection port.

3. The power tool of claim 2 wherein the fuel gauge includes a visual indication of a battery pack state.

4. The power tool of claim 2 the fuel gauge is positioned proximate the first portion of the battery connection port when the battery pack is coupled to the battery connection port.

5. The power tool of claim 1 wherein the removal axis forms an angle is approximately twenty-five degrees with respect to the body axis.

18. The power tool of claim 1 wherein the tool axis is disposed at an angle with respect to the body axis.

19. The power tool of claim 18 wherein the body axis is substanstially perpendicular with respect to the tool axis.

20. The power tool of claim 1 wherein the motor includes an output shaft rotatable about a motor axis, wherein the motor axis intersects the tool axis and the removal axis.

21. The power tool of claim 20 wherein the body axis is parallel to the motor axis.

22. The power tool of claim 1, wherein the hand grip surrounds the motor.

6. A battery-operated power tool comprising:

a motor;

a housing assembly configured to house the motor, the housing assembly defining a body axis and having a hand grip for a user, wherein the hand grip and the motor are positioned between a first end and a second end of the housing and the body axis extends through the hand grip, the motor, and the first end and the second end of the housing;

a tool element positioned at the first end of the housing, the tool element defining a tool axis;

a battery pack having a fuel gauge; and

a connection port positioned at the second end of the housing and adapted to couple the battery pack to the housing,

wherein the connection port includes an interface surface having a first portion and a second portion,

wherein the second portion is positioned closer to the first end than the first portion,

wherein the first portion defines a removal that is positioned at an angle of less than ninety degrees measured from the body axis,

wherein the hand grip at least partially surrounds the motor and the hand grip is positioned between the removal axis and the tool axis

wherein the tool axis and the body axis lie in a common plane, the body axis dividing the plane into an upper portion and a lower portion, the lower portion intersecting the tool element and the upper portion intersecting the battery pack, and

wherein the second portion of the battery connection port intersects the lower portion of the plane.

7. The battery operated power tool of claim 6 wherein the fuel gauge is readily visible to the user during operation of the power tool when the battery pack is coupled to the connection port.

8. The battery-operated power tool of claim 6 wherein the fuel gauge includes a visual indication of a battery pack state.

9. The battery-operated power tool of claim 6 wherein the fuel gauge is positioned proximate the first portion of the connection port when the battery pack is coupled to the connection port.

10. The battery-operated power tool of claim 6 wherein the angle is approximately twenty-five degrees.

11. A battery-operated power tool comprising:

a motor;

a housing configured to house the motor, the housing defining a body axis and having a hand grip, wherein the hand grip and the motor are positioned between a first end and a second end of the housing and the body axis extends through the hand grip, the motor, and the first end and the second end of the housing;

a side handle extending from the housing;

a tool element positioned at the first end of the housing, the tool element pivotable about a tool axis;

a battery pack; and

a connection port adapted to couple the battery pack to the housing,

wherein the connection port includes an interface surface having a first portion and a second portion,

wherein the second portion is positioned closer to the first end of the housing than the first portion,

wherein the tool axis and the body axis intersect

wherein the tool axis and the body axis lie in a common plane, the body axis dividing the plane into an upper portion and a lower portion, the lower portion intersecting the tool element and the upper portion intersecting the battery pack, and

wherein the second portion of the battery connection port intersects the lower portion of the plane.

12. The battery-operated power tool of claim 11 wherein the battery pack includes a fuel gauge that is readily visible to the user during operation of the power tool when the battery pack is coupled to the connection port.

13. The battery-operated power tool of claim 12 wherein the fuel gauge includes a visual indication of a battery pack state.

14. The battery-operated power tool of claim 12 wherein the fuel gauge is positioned proximate the first portion of the connection port when the battery pack is coupled to the connection port.

15. The battery-operated power tool of claim 11 wherein the connection port defines a removal axis for the battery pack, wherein the second portion of the interface surface is positioned closer to the first end housing than the first portion of the interface surface such that the removal axis is at an angle of less than ninety degrees measured from the body axis.

16. The battery-operated power tool of claim 15 wherein the angle is approximately twenty-five degrees.

17. The battery-operated power tool of claim 11 wherein the interface surface defines a removal axis slanted with respect to the body axis.