Hand held personal care appliance
View Patent ↗A hand-held personal care appliance includes a handle accommodating a rechargeable power supply and having electrical contacts, an operating head detachably mountable on the handle and having contacts for connection to the contacts of the handle, and a charging device for recharging the power supply and having contacts for connection to the contacts of the handle. The operating head must be detached from the handle for recharging the power supply. Different operating heads may be mountable on the handle to form a vibrating safety razor, a hair trimmer, etc.
1. A hand-held personal care appliance comprising:
a handle including electrical contacts and accommodating a rechargeable power supply for supplying electric current to the electrical contacts;
an operating head releasably engageable with the handle and including an electrical device to be operated by the electric current supplied from the power supply, the operating head having electrical contacts for cooperation with the electrical contacts of the handle when the operating head is engaged with the handle; and
a charging device for recharging the power supply, the charging device having electrical contacts engageable with the electrical contacts of the handle to deliver recharging current to the power supply
wherein the handle and the charging device have complementary coupling members including the electrical contacts of the handle and the charging device for mechanically and electrically connecting the handle to the charging device for recharging the power supply,
wherein the coupling members comprise male and female coupling members of a bayonet coupling,
wherein the female coupling member is provided at an end of the handle and includes a cylindrical sleeve portion with at least one bayonet slot therein, and the male member is provided on the charging device and includes a plug part engageable in the sleeve portion and having a projection for engagement, and
wherein said electrical contacts of the handle and the charging device comprise a spring loaded pin positioned within the sleeve portion urged axially towards the upper end of the handle, and a second electrical contact positioned within the plug part, such that when the coupling members are engaged the spring loaded pin abuts the second electrical contact.
2. The hand-held personal care appliance of claim 1 , wherein the plug part has at least one projection for engagement with the at least one bayonet slot provided in the sleeve portion.
3. The hand-held personal care appliance of claim 1 , including a sealing arrangement for sealing the handle to the charging device externally of the electrical contacts.
4. The hand-held personal care appliance of claim 1 , wherein the handle comprises an annular seal extending around the sleeve portion.
5. The personal care appliance of claim 1 , wherein the charging device is included in a storage stand having a holding region for receiving the operating head during periods of non-use.
6. The personal care appliance of claim 1 , wherein the handle includes a switch arrangement for controlling a supply of the electric current to the operating head in use for the appliance and for controlling a supply of the electric current to the power supply during recharging.
7. The personal care appliance of claim 1 , wherein the operating head is a safety razor head and an electrically driven vibration generating device.
8. The personal care appliance of claim 1 , wherein the operating head comprises a hair trimmer unit with a trimmer blade assembly, and the electrical device comprises an electric motor for driving a blade element of the blade assembly.