Electric toothbrush rotating replacement head device

An electric toothbrush rotating replacement head device, wherein the device comprises a toothbrush head, a toothbrush handle, an elastic connecting rod, a compression spring, and a spring sleeve;

• the toothbrush handle defines a cavity, and the toothbrush head is disposed on a top of the cavity;
• the spring sleeve, the compression spring, and the elastic connecting rod are sequentially arranged in the toothbrush handle from outside to inside;
• wherein the toothbrush head comprises:
• a bristle top cover;
• a bristle bottom cover, disposed on the bristle top cover;
• a positioning step, disposed on the bristle bottom cover, and the bristle top cover and the positioning step being located at two sides of the bristle bottom cover;
• a convex block, disposed on the positioning step;
• a first connecting bone, connected to the convex block;
• a second connecting bone, connected to the convex block;
• wherein a first spacing cavity is provided between the first connecting bone and the second connecting bone;
• and
• an inner cylinder, disposed in the convex block;
• wherein the toothbrush handle defines an opening at a bottom of the cavity and a buckle hole, the buckle hole is configured to be fitted with a buckle of the spring sleeve, and the toothbrush handle comprises:
• a rotation limiting column, disposed at the top of the cavity and disposed in the first spacing cavity;
• wherein the rotation limiting column is configured to cooperate with the first connecting bone and the second connecting bone to limit a rotation angle of the toothbrush head;
• and
• a cylinder, disposed at a side of the rotation limiting column and configured to match with the inner cylinder through a rotating shaft;
• wherein the elastic connecting rod defines a first pin hole disposed at a top of elastic connecting rod, a pin is disposed in the first pin hole, and the compression spring is configured to drive the toothbrush head through the elastic connecting rod and the pin.

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;

• wherein 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 compression spring disposed on the spring limiting disc, and the elastic connecting rod being disposed in the compression spring;
• and
• wherein 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;
• wherein the spring limiting disc defines a vent groove, and the device comprises a cross bone disposed under the spring limiting disc.