Handles are provided for battery operated razors. In some implementations, the handles include (a) a housing including a grip portion defining a chamber having an interior wall, and a battery cover removably mounted on the grip portion, the housing being configured to contain one or more batteries, and (b) a closing system, including a first component within the battery cover, and a second component secured to the interior wall of the grip portion, the first component being configured to move axially within the battery cover during engagement of the battery cover with the grip portion, and being biased toward a predetermined axial position.
1. A battery operated razor comprising
a housing including a grip portion defining a chamber having an interior wall, and a battery cover removably mounted on the grip portion, the housing being configured to contain one or more batteries, and
a closing system, including a first component within the battery cover, and a second component secured to the interior wall of the grip portion, the first component being configured to move axially relative to the battery cover during engagement of the battery cover with the grip portion, and being biased from the battery cover and toward a predetermined axial position, wherein the first and second components are configured to directly engage each other by rotation of the battery cover relative to the housing.
2. The razor of claim 1 wherein the first component includes a circumferentially extending slot having an open end and the second component includes a male portion configured to slide into the slot through the open end during rotation.
3. The razor of claim 1 wherein the first and second components are electrically conductive.
4. The razor of claim 1 wherein the first component is biased towards a bottom region of the battery cover.
5. The razor of claim 1 wherein the first component includes a spring element configured to apply an axial force between the grip portion and battery cover when the first and second components are engaged.
6. The razor of claim 1 wherein engagement of the first and second components provides an electrical connection between the first and second components.
7. The razor of claim 1 further comprising electronic components disposed within the chamber.
8. The razor of claim 7 wherein the second component extends from a carrier on which the electronics are mounted within the chamber.
9. The razor of claim 8 wherein the carrier comprises one or more power rails.
10. The razor of claim 7 wherein the second component includes a portion configured to make electrical contact with the electronics.
11. The razor of claim 7 wherein the electronics are configured to drive a vibrating function of the razor.
12. The razor of claim 1 wherein the second component includes a circumferentially extending slot having an open end and the first component includes a male portion configured to slide into the slot through the open end during rotation.
13. The razor of claim 2 or 12 wherein the open end of the slot includes a lead-in configured to guide insertion of the male portion into the slot.
14. The razor of claim 2 or 12 wherein the slot terminates in a detent area configured to receive the male portion.
15. The razor of claim 1 wherein the first component is biased by a bayonet spring.
16. The razor of claim 15 further comprising a battery spring positioned to bias a battery within the housing towards an electrical contact at an opposite end of the housing.
17. The razor of claim 1 further comprising, within the housing, a carrier including a pair of battery clamp fingers configured to exert a clamping force against the battery when the battery is in place in the housing.
18. The razor of claim 17 wherein each finger exerts a spring force of about 0.5 N when a battery having a diameter of 9.5 mm is inserted into the housing, and less than about 2.5 N when a battery having a diameter of 10.5 mm is inserted into the housing.