US 11,896,116 B1
Electric toothbrush rotating replacement head device
Mingyuan Li, Maoming (CN)
Assigned to SHENZHEN BLUE DREAM DIGITAL TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by Shenzhen Blue Dream Digital Technology Co., Ltd., Shenzhen (CN)
Filed on Jun. 15, 2023, as Appl. No. 18/335,966.
Int. Cl. A46B 5/00 (2006.01); A61C 17/22 (2006.01); A61C 17/26 (2006.01); A61C 17/34 (2006.01); A46B 9/04 (2006.01)
CPC A46B 5/0095 (2013.01) [A46B 9/04 (2013.01); A61C 17/222 (2013.01); A61C 17/26 (2013.01); A61C 17/34 (2013.01); A46B 2200/1066 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric toothbrush rotating replacement head device, wherein the device comprises a toothbrush replacement head body, the toothbrush replacement head body comprises a toothbrush handle and a toothbrush head, the toothbrush handle defines a cavity, and the toothbrush head is disposed on a top of the cavity;
the device comprises:
an elastic connecting rod disposed in the cavity, and a top of the elastic connecting rod defining a first pin hole;
a spring limiting disc disposed on a bottom of the elastic connecting rod;
a pin disposed in the first pin hole, and a diameter of the first pin hole being greater than a diameter of the pin;
a first spring limiting block and a second spring limiting block disposed on two sides of the elastic connecting rod respectively; and
a compression spring disposed on the spring limiting disc, and the elastic connecting rod being disposed in the compression spring; and
the toothbrush head comprises a convex block, the convex block defines a second pin hole, and the elastic connecting rod is inserted into the second pin hole through the pin and connected to the toothbrush head.