Latch mechanism for battery retention

• US 9,437,848 B2
• Filed: 04/27/2012
• Issued: 09/06/2016
• Est. Priority Date: 04/28/2011
• Status: Expired due to Fees

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Inventors: Pendry, Craig
• Primary Examiner(s): Lugo, Carlos
• Application Number:
  US13/459,004
• Publication Number:
  US 20120276428A1
• Time in Patent Office: 1,593 Days
• US Class Current: 1/1
• CPC Class Codes: A61H 2201/1207 with electric or magnetic drive
• CPC Class Codes: A61H 31/006 Power driven
• CPC Class Codes: E05C 1/02 without latching action
• CPC Class Codes: E05C 1/08 with latching action
• CPC Class Codes: E05C 1/14 the handle or member moving essentially towards or away from the plane of the wing or frame
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/342 Non-re-sealable arrangements
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A latch mechanism for retaining a battery within a batter compartment.

Claims

1. A latching system for retaining a battery pack within a battery compartment, comprising:

a housing having a first end and a second end, the housing defining four sides of the battery pack, the housing also having a slot formed in one of the sides at the first end of the housing, the battery pack configured for insertion into an opening of the battery compartment, the opening of the battery compartment defined by a lip;

at least one tab disposed on a side of the housing opposite the slot at the first end of the housing, the tab having a front face facing the first end of the housing and a second face facing towards the second end of the housing, the second face forming a ramp having a maximum protrusion from the side of the housing at the front face, the ramp configured to to engage a portion of the lip of the opening of the battery compartment to force the first end of the housing towards a side of the battery compartment while the housing is being inserted into the battery compartment;

a latch having a projection formed on a first end of the latch and configured to moveably extend through the slot in the housing, the projection having a first, angled, side and a second, flat, side, the latch also having a second end opposite the first end of the latch, and a front face and a rear face, the front face having a slot disposed therein;

a compression spring disposed between the second end of the latch and a side of the housing opposite the slot, the spring for biasing the latch upwards extending the projection through the slot into a position for engaging a latch receiver disposed in a device to be powered by the battery pack; and

a latch lever pivotally mounted at the first end of the housing, the latch lever having a wing and a toggle disposed about the pivot perpendicular to each other, the wing configured to engage the slot disposed in the front face of the latch such that movement of the toggle causes the wing to impart movement to the latch within the housing to withdraw the projection into the slot of the housing.

2. The latch assembly of claim 1, wherein the latch lever includes a pair of pins that engage a mount attached to the housing to hold the latch lever in place and allow the latch lever to pivot.

3. The latch assembly of claim 2, further comprising a lever base mounted on the housing and configured to receive the pair of pins of the latch lever to retain the latch lever on the housing and to provide for pivotal movement of the lever.

4. The latch assembly of claim 1, wherein the latch lever includes a channel extending longitudinally through an area where the wing and toggle join, the channel sized to receive an axle having a length greater than a longitudinal width of the latch lever.

5. The latch assembly of claim 4, further comprising a lever base mounted on the housing and configured to receive at least a portion of the axle to retain the latch lever on the housing and to provide for pivotal movement of the lever.

6. The latch assembly of claim 1, wherein the latch lever includes an indicator that is only visible when the projection of the latch is not fully extended through the slot in the housing.