Sexual stimulation device

1. A sexual stimulation device comprising a casing having a vibrator unit disposed therein, the vibrator unit comprising a housing in which is disposed an electric motor provided with a rotatably drivable eccentric mass whereby operation of the electric motor produces vibrations, a battery in the housing for providing power to the electric motor, an electrical conductor connecting a pole of the battery to a first electrode of the electric motor and a switch connecting the other pole of the battery to a second electrode of the electric motor wherein the switch comprises a bi stable actuating means pushable in one direction to switch on the electric motor and pushable in the same direction to switch off the electric motor, and the housing comprises a resiliently depressible sealing element surmounting the actuating means, and wherein the switch is situated in a cavity defined between the electric motor and the battery.

2. The device according to claim 1 , including connection means for connecting the device to a penis.

3. The device according to claim 2 , wherein the connection means are connected to and formed in one piece with the casing.

4. The device according to claim 3 , wherein the connection means comprise a resilient loop for extending around the penis, the resilient loop having a greater cross-section in a region proximal to the casing than in a region distal to the casing.

5. The device according to claim 4 , wherein the connection means comprise a predetermined weak point.

6. The device according to claim 5 , wherein the connection means include one or more forwardly-facing protrusions.

7. The device according to claim 6 , wherein the actuating means of the switch is situated towards a side of the vibrator unit which in use is distal from the penis.

8. The device according to claim 7 , wherein the casing comprises a resilient sleeve into which the vibrator unit is inserted.

9. The device according to claim 8 , wherein the ends of the casing are closed whereby the casing encloses the ends of the vibrator unit.

10. The device according to claim 9 , wherein the casing defines a hole located adjacent to the actuating means, through which hole the vibrator unit is inserted into the casing.

11. A vibrator unit for a sexual stimulation device comprising a housing in which is disposed an electric motor provided with a rotatably drivable eccentric mass whereby operation of the electric motor produces vibrations, a battery in the housing for providing power to the electric motor, an electrical conductor connecting a pole of the battery to a first electrode of the electric motor and a switch connecting the other pole of the battery to a second electrode of the electric motor wherein the switch comprises a bi stable actuating means pushable in one direction to switch on the electric motor and pushable in the same direction to switch off the electric motor, and the housing comprises a resiliently depressible sealing element surmounting the actuating means, and wherein the housing comprises a pair of generally semi-cylindrical half shells.

12. The vibrator unit according to claim 11 , wherein the half shells are sealed together by ultra-sonic welding.

13. The vibrator unit according to claim 12 , wherein a groove extends around the housing at an end region thereof.

14. A vibrator unit for a sexual stimulation device comprising:

a housing comprising a resiliently depressible sealing element;

an electric motor disposed in the housing comprising a rotatably driveable eccentric mass, a first electrode, and a second electrode, wherein operation of the electric motor produces vibrations;

a battery in the housing for providing power to the electric motor, the battery having a first pole and a second pole;

an electrical conductor connecting the first pole of the battery to the first electrode of the electric motor; and

a switch connecting the second pole of the battery to the second electrode of the electric motor, the switch comprising a bi stable actuating means pushable in one direction to switch on the electric motor, and pushable in the same direction to switch off the electric motor;

wherein a cavity is defined between the electric motor and the battery;

wherein the resiliently depressible sealing element of the housing surmounts the actuating means; and

wherein the switch is situated in the cavity.

15. The vibrator unit according to claim 14 , the housing comprising a pair of generally semi-cylindrical half shells.

16. The vibrator unit according to claim 15 , wherein the half shells are sealed together by ultra-sonic welding.

17. The vibrator unit according to claim 16 , the housing further comprising a groove extending around the housing at an end region thereof.