A toothbrush

Abstract

The present invention provides a toothbrush, comprising a housing, a battery, a motor, a first gear, a second gear, a first eccentric wheel, a connecting shaft, a second eccentric wheel and a toothbrush head arranged in the housing, the battery is connected to the motor, the rotating shaft of the motor is sleeved with a first gear, the gear teeth and the tooth root circle of the first gear are located on the same plane, the first gear and the second gear are meshed and connected, the gear teeth of the second gear are arranged perpendicular to the tooth root circle, the connecting shaft is flat, oblong holes are arranged at both ends of the connecting shaft, the oblong hole at one end of the connecting shaft is sleeved on the first rotating shaft of the first eccentric wheel, the oblong hole at the other end of the connecting shaft is sleeved on the second rotating shaft of the second eccentric wheel, the second rotating wheel body of the second eccentric wheel is connected to a connecting disc, and the connecting disc is connected to the toothbrush head. Since the connecting shaft that goes deep into the oral cavity of the present invention is flat, the size of the housing covering the connecting shaft is as small as possible, and the cleaning effect is better.

Description

Technical Field

[0001] The invention belongs to the field of toothbrushes, and more particularly relates to a toothbrush capable of protecting teeth. Background Art

[0002] The electric toothbrush generates high-frequency vibrations through the rapid rotation or vibration of the motor core, which instantly breaks down the toothpaste into fine foam and deeply cleans the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and massage the gum tissue. The existing electric toothbrush has a large volume that enters the oral cavity and cannot thoroughly clean the teeth. Long-term use can easily damage the teeth. Summary of the invention

[0003] The object of the present invention is to provide a toothbrush with better cleaning effect.

[0004] According to one aspect of the present invention, there is provided a toothbrush, comprising a housing, and a battery, a motor, a first gear, a second gear, a first eccentric wheel, a connecting shaft, a second eccentric wheel and a toothbrush head arranged in the housing.

[0005] The battery is used to power the motor, a first gear is sleeved on the rotating shaft of the motor, the gear teeth and the root circle of the first gear are located on the same plane, the first gear and the second gear are meshed and connected, the gear teeth of the second gear are arranged perpendicular to the root circle, the root circle of the second gear is fitted and connected with the first rotating wheel body of the first eccentric wheel, the connecting shaft is flat, the part of the shell covering the connecting shaft is flat, oblong holes are provided at both ends of the connecting shaft, the oblong hole at one end of the connecting shaft is sleeved on the first rotating shaft of the first eccentric wheel, the oblong hole at the other end of the connecting shaft is sleeved on the second rotating shaft of the second eccentric wheel, the second rotating wheel body of the second eccentric wheel is connected to the connecting disk,

[0006] A connecting column is provided on one side of the connecting disc, the outer side of the connecting column is cylindrical, and a hexagonal through hole is provided in the axial direction of the connecting column.

[0007] The toothbrush head includes a disc, bristles arranged on one end surface of the disc, and a disc connecting tube and a disc connecting shaft arranged in parallel on the other end surface of the disc. The disc connecting shaft passes through the disc connecting tube and does not contact the disc connecting tube. The disc connecting tube is a hollow tube body, and the disc connecting shaft is in the shape of a hexagonal prism. The disc connecting tube is sleeved outside the connecting column, and the disc connecting shaft passes through the hexagonal prism through hole of the connecting column.

[0008] In some embodiments, a control board is further provided in the shell, a switch is provided outside the shell, the control board is connected to the switch, a single-chip microcomputer for reading the switch instructions is provided on the control board, the control board is connected to the motor, the battery is a lithium battery, and the battery is connected to the control board.

[0009] In some embodiments, the shell includes a first shell, a second shell and a bottom cover, the first shell and the second shell are buckled to form a shell body, the bottom cover is inserted into the bottom of the shell body, and the portion of the shell body used to cover the connecting shaft is flat.

[0010] In some embodiments, the first eccentric wheel includes a first rotating wheel body and a first rotating shaft disposed perpendicular to the first rotating wheel body. The first rotating shaft deviates from the center of the first rotating wheel body.

[0011] In some embodiments, the second eccentric wheel includes a second rotating wheel body and a second rotating shaft disposed perpendicular to the second rotating wheel body, and the second rotating shaft deviates from the center of the second rotating wheel body.

[0012] In some embodiments, the connecting shaft is in the shape of a thin plate.

[0013] The beneficial effects are as follows: since the connecting shaft that goes deep into the oral cavity is flat, the size of the shell covering the connecting shaft is as small as possible, so the cleaning effect is better; the control panel of the present invention can set the speed and direction of the motor, so that the cleaning effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded schematic diagram of a toothbrush according to an embodiment of the present invention;

[0015] Figure 2 A schematic structural diagram of a toothbrush according to an embodiment of the present invention;

[0016] Figure 3 The figure is a schematic diagram of the internal structure of a toothbrush according to one embodiment of the present invention. DETAILED DESCRIPTION

[0017] Figures 1 to 3 A toothbrush according to an embodiment of the present invention is schematically shown. Figures 1 to 3 As shown, the toothbrush includes a housing 1, a battery 2 arranged in the housing 1, a motor 3, a first gear 4, a second gear 5, a first eccentric wheel 6, a connecting shaft 7, a second eccentric wheel 8 and a toothbrush head 9.

[0018] The housing 1 includes a first housing 11, a second housing 12 and a bottom cover 3. The first housing 11 and the second housing 12 are buckled to form the main body of the housing 1, and the bottom cover 3 is inserted into the bottom of the main body of the housing 1 to form the housing 1. The motor 3 is installed inside the housing 1 through a motor mounting seat 31. A switch button through hole is provided on the housing 1. The switch is installed in the through hole of the housing 1. A control board 10 is also provided in the housing 1. The switch is connected to the control board 10. A single-chip microcomputer is provided on the control board 10, and the single-chip microcomputer reads the switch instruction and gives a corresponding signal to the control board 10. The control board 10 is connected to the motor 3 to control the rotation direction and speed of the motor 3, so as to realize the rotation direction and speed of the toothbrush head 9. The battery 2 is a lithium battery. The control board 10 is also provided with a charging management module for charging and discharging the battery 2. The battery 2 is connected to the control board 10 through a wire to power the motor 3.

[0019] The rotating sleeve of the motor 3 is provided with a first gear 4. The gear teeth and the root circle of the first gear 4 are located on the same plane. The first gear 4 is meshed and connected with the second gear 5. The gear teeth of the second gear 5 are arranged perpendicular to the root circle. A first eccentric wheel 6 is arranged on the end face of the root circle of the second gear 5. The first eccentric wheel 6 includes a first rotating wheel body and a first rotating shaft arranged perpendicular to the first rotating wheel body. The first rotating shaft deviates from the center of the first rotating wheel body. The first rotating shaft is arranged perpendicular to the first rotating wheel body. The toothbrush head 9 includes a disc 91, bristles 92 arranged on one end face of the disc 91, and a disc connecting tube 94 and a disc connecting shaft 93 arranged on the other end face of the disc 91. The disc connecting shaft 93 is penetrated in the disc connecting tube 94 and does not contact the disc connecting tube 94, the disc connecting shaft 93 is arranged parallel to the disc connecting tube 94, and the disc connecting shaft 93 is flush with the end of the disc connecting tube 94. The disc connecting tube 94 is a hollow tube body. The disc connecting shaft 93 is in the shape of a hexagonal prism. A connecting column is provided on one side of the connecting disc 91. The outer side of the connecting column is in the shape of a cylinder. A hexagonal prism through hole matching the disc connecting shaft 93 is provided in the axial direction of the connecting column. Thus, the disc connecting tube 94 is sleeved outside the connecting column, and the disc connecting shaft 93 is inserted into the hexagonal prism through hole of the connecting column, thereby, the rotation of the disc 91 can drive the rotation of the toothbrush head 9 and the toothbrush head 9 is easy to replace. A second eccentric wheel 8 is provided on the other side of the connecting disc 91. The second eccentric wheel 8 includes a second rotating wheel body and a second rotating shaft arranged on the second rotating wheel body. The second rotating shaft deviates from the center of the second rotating wheel body. The second rotating shaft is arranged vertically with the second rotating wheel body. The second rotating wheel body is fitted and connected with the connecting disc 91. The connecting shaft 7 is flat. In order to reduce the volume of the toothbrush rod body as much as possible and make it easier to move in the oral cavity, the connecting shaft 7 is in the shape of a thin plate as thin as possible under the premise of being able to stably connect the first eccentric wheel 6 and the second eccentric wheel 8. Long round holes are arranged at both ends of the connecting shaft 7. The long round hole at one end of the connecting shaft 7 is sleeved on the first rotating shaft of the first eccentric wheel 6, and the long round hole at the other end of the connecting shaft 7 is sleeved on the second rotating shaft of the second eccentric wheel 8.

[0020] The rotation of the rotating shaft of the motor 3 drives the rotation of the first gear 4, the rotation of the first gear 4 drives the rotation of the second gear 5, the rotation of the second gear 5 drives the rotation of the first eccentric wheel 6, the rotation of the first eccentric wheel 6 drives the reciprocating movement of the connecting shaft 7 through the first rotating shaft, the reciprocating movement of the connecting shaft 7 rotates the second eccentric wheel 8, and the rotation of the second eccentric wheel 8 drives the rotation of the toothbrush head 9, thereby achieving the effect of cleaning the oral cavity.

[0021] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A toothbrush, characterized in that: The toothbrush comprises a housing, a battery, a motor, a first gear, a second gear, a first eccentric wheel, a connecting shaft, a second eccentric wheel and a toothbrush head, which are arranged in the housing. The battery is used to power the motor, a first gear is sleeved on the rotating shaft of the motor, the gear teeth and the root circle of the first gear are located on the same plane, the first gear and the second gear are meshed and connected, the gear teeth of the second gear are arranged perpendicular to the root circle, the root circle of the second gear is fitted and connected with the first rotating wheel body of the first eccentric wheel, the connecting shaft is flat, the part of the shell covering the connecting shaft is flat, oblong holes are provided at both ends of the connecting shaft, the oblong hole at one end of the connecting shaft is sleeved on the first rotating shaft of the first eccentric wheel, the oblong hole at the other end of the connecting shaft is sleeved on the second rotating shaft of the second eccentric wheel, the second rotating wheel body of the second eccentric wheel is connected to the connecting disk, A connecting column is provided on one side of the connecting disc, the outer side of the connecting column is cylindrical, and a hexagonal through hole is provided in the axial direction of the connecting column. The toothbrush head comprises a disc, bristles arranged on one end surface of the disc, and a disc connecting tube and a disc connecting shaft arranged in parallel on the other end surface of the disc, wherein the disc connecting shaft is inserted into the disc connecting tube and does not contact the disc connecting tube, the disc connecting tube is a hollow tube body, the disc connecting shaft is in the shape of a hexagonal prism, the disc connecting tube is sleeved outside the connecting column, and the disc connecting shaft is inserted into the hexagonal prism through hole of the connecting column; A control board is also provided in the housing, a switch is provided outside the housing, the control board is connected to the switch, a single-chip microcomputer for reading the switch instruction is provided on the control board, the control board is connected to the motor, the battery is a lithium battery, and the battery is connected to the control board; The housing comprises a first housing, a second housing and a bottom cover, wherein the first housing and the second housing are buckled to form a housing body, and the bottom cover is inserted through the bottom of the housing body; The first eccentric wheel comprises a first rotating wheel body and a first rotating shaft arranged perpendicular to the first rotating wheel body, and the first rotating shaft deviates from the center of the first rotating wheel body; The second eccentric wheel includes a second rotating wheel body and a second rotating shaft arranged perpendicular to the second rotating wheel body, and the second rotating shaft deviates from the center of the second rotating wheel body.

2. The toothbrush according to claim 1, characterized in that The connecting shaft is in the shape of a thin plate.

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