JP2022008739A - electric toothbrush - Google Patents

Abstract

To provide an electric toothbrush.SOLUTION: An electric toothbrush includes a tooth brush housing. The tooth brush housing includes: a handle; a connection head; a connection rod; and a toothbrush head. The toothbrush head, the connection rod and the connection head are integrated, can be inserted in and connected to the handle. In the handle, a drive acceleration component, a transmission acceleration component, and an elastic component are installed, and a motor for which power is provided by the drive acceleration component, a first small gear, a first large gear, a second large gear and a second small gear are included. The transmission acceleration component includes a rubber belt transmitting power, a third small gear, and a third large gear. The elastic component includes an elastic square bar controlling horizontal movement by the transmission acceleration component.SELECTED DRAWING: Figure 1

Description

The present invention relates to the field of toothbrushes, and specifically is an electric toothbrush.

Now that people have placed great importance on oral health, the demand for toothbrushes has been constantly increasing. Many people recognize and use the excellent cleanliness effect of electric toothbrushes. The principle of operation of most electric toothbrushes is that the rotation of the eccentric shaft creates a violent vibration that causes the toothbrush head to vibrate, which is used to remove food left on the teeth. However, electric toothbrushes with such a pattern have low cost performance, and if there is very stubborn plaque on the teeth, they cannot be removed cleanly, so an electric toothbrush with high cost performance and a toothbrush head that can rotate at high speed is required. Is.

Chinese Patent Application Publication No. 106236305

An object of the present invention provides an electric toothbrush, which can solve the problems in the current art described above.

The present invention is realized through the following technical plan: The electric toothbrush of the present invention includes a toothbrush housing, the toothbrush housing includes a handle, a connecting head, a connecting rod and a toothbrush head, and the toothbrush head and the connecting rod. And the connecting head are integrated and can be plugged and connected to the handle. A drive acceleration component, a transmission acceleration component, and a telescopic component are installed in the handle, and the drive acceleration component powers the drive acceleration component. A rubber belt including a motor, a first gear, a first gear, a second gear and a second gear, and a transmission acceleration component transmitting power, a third gear and a third gear are provided. The telescopic part includes a gear, the telescopic part includes a telescopic square bar whose left-right movement is controlled by the transmission acceleration part, and a reciprocating part and a toothbrush head area within the handle, the connecting head, and the connecting rod. Installed, the reciprocating component comprises a push plate that controls left movement by the telescopic square bar, a push rod, and a return spring that controls right movement of the push plate, the toothbrush head area. The rack plate includes a rotation block located in the toothbrush head and a rack plate that controls the rotation of the rotation block, and the rack plate controls the rotation block and constantly rotates by the action of the left-right movement of the push rod. Let me.

Preferentially, the toothbrush housing includes a drive chamber located in the handle, a plug-in connecting head is fixedly attached to the left end surface of the handle, and the connecting head is different from the plug-in connecting head. A plug-in connection groove that can be plugged in and connected and can be plugged and coupled to the plug-in connecting head is provided in the right end surface of the connecting head, and the connecting rod is attached to the connecting head. Fixedly attached to the left end face, the toothbrush head fixedly attached to the left end face of the connecting rod, the handle provided with an upwardly open storage chamber at the opening of the storage chamber. Is attached so that the lid is closed, a button is installed on the top end surface of the handle, a battery is installed on the right side of the drive chamber, and a charging jack is installed in the right end surface of the handle.

Preferentially, the drive accelerating component includes a first accelerating shaft that is rotatably mounted in the bottom wall of the drive chamber, the motor is fixedly mounted to the right end face of the drive chamber, and the motor. The first bevel gear is fixedly attached to the output shaft on the left side of the above, the second bevel gear that meshes with the first bevel gear is fixedly attached to the first acceleration shaft, and the first large gear is the said. It is fixedly attached to the first acceleration shaft, and is attached to the left side of the first acceleration shaft on the bottom wall of the drive chamber so that the first acceleration shaft can rotate, and the first small gear is attached to the first acceleration shaft. The first small gear meshes with the first large gear, the second large gear is fixedly attached to the first acceleration shaft, and the first is between the upper and lower walls of the drive chamber. The second acceleration shaft is attached to both front and rear sides of the first acceleration shaft so that the second acceleration shaft can rotate symmetrically, the second small gear is fixedly attached to the second acceleration shaft, and the second small gear is fixedly attached to the second small gear. It includes a first pulley that meshes with two large gears and the transmission acceleration component is fixedly attached to the second acceleration shaft, and two front-to-back symmetrical acceleration transmission shafts can rotate between the upper and lower walls of the drive chamber. The second pulley is fixedly attached to the acceleration transmission shaft, the rubber belt is attached so as to be transmitted between the second pulley and the first pulley, and the third large gear is attached. It is fixedly attached to the acceleration transmission shaft, and is attached to the left side of the acceleration transmission shaft between the upper and lower walls of the drive chamber so that two front-to-back symmetrical transmission shafts can rotate, and the third small gear is attached. The third small gear is fixedly attached to the transmission shaft, the third small gear meshes with the third large gear, and the transmission half gear is fixedly attached to the transmission shaft.

Preferentially, the telescopic component includes a fixed base that is fixedly attached to the bottom wall of the drive chamber, a guide base is fixedly attached to the top end face of the fixed base, and the telescopic square bar is the guide. It is mounted so that it can slide into the table, a limit block is fixedly attached to the right end surface of the telescopic rod, side racks are installed on the front and rear end faces of the telescopic rod, and the transmission on both front and rear sides. On the outer end face of the half gear, a first half ring gear that meshes with the side rack is installed half a circumference, and the reciprocating part includes a telescopic chamber located in the connecting rod, and the telescopic chamber and the insertion groove are provided. Insertion connecting square holes are provided in communication between them, and the telescopic rods are coupled to the insertion square holes so as to be slidable so that they can enter the telescopic chamber, and the push plate can be inserted into the telescopic chamber. Attached so as to slide between the inner walls of the telescopic chamber, the push rod is fixedly attached to the left end face of the push plate, and the return spring is attached to the left side wall of the telescopic chamber and the left end face of the push plate. It is fixedly attached between them so that the telescopic rod can come into contact with the right end surface of the push plate.

Preferredly, the toothbrush head area includes a toothbrush head chamber located within the toothbrush head, the push rod enters the toothbrush head chamber to the left, and a rotary push plate is on the left end surface of the push plate. Is fixedly attached, the rack plate is fixedly attached to the left end surface of the rotary push plate so as to be symmetrical in the front-rear direction, and a double-sided rack is installed on the opposite end faces of the acceleration transmission shafts on both front and rear sides. , The rotating block is installed in the toothbrush head chamber, the ball is mounted between the rotating block and the bottom wall of the toothbrush head chamber so that the ball can rotate, and the twin is attached to the outer end surface of the rotating block. A second half ring gear that meshes with the surface rack is installed, a turntable on the same horizontal plane as the top end face of the toothbrush head is fixedly attached to the top end face of the rotation block, and a limit ring is fixedly attached to the outside of the turntable. Is installed, and brushes are installed on the top end face of the turntable and the top end face of the toothbrush head.

Benefits of the invention: The invention is simple in structure, convenient to operate, installs three ranks of acceleration in the device, greatly improves the speed of transmission, two first half ring gears and a double-sided rack 38. By interlocking the expansion and contraction of the telescopic square bar with the interval coupling with, the left and right movement of the push rod is interlocked, and the indirect connection between the two double-sided rack 38 and the second half ring gear realizes the continuous rotation of the rotating block. Moreover, it has a high rotation speed, quickly removes food debris left in the gaps between teeth, has a strong cleaning effect, is essentially distinct from traditional eccentric shaft electric toothbrushes, has high cost performance, and is stored. It has space, is convenient to use, and has advertising value.

For the sake of simplicity, the present invention will be described in detail with reference to the following specific examples.

FIG. 1 is a schematic diagram of the entire configuration of the present invention. FIG. 2 is a schematic cross-sectional configuration of AA of FIG. FIG. 3 is a schematic cross-sectional configuration of BB of FIG. FIG. 4 is a schematic cross-sectional configuration of CC of FIG. FIG. 5 is a schematic cross-sectional configuration of DD of FIG.

The present invention will be described in detail with reference to FIGS. 1 to 5 below. For convenience of explanation and communication, the up / down / left / right / front / back directions described below coincide with the up / down / left / right / front / back directions of the projection relationship of FIG. 1 itself.

Referring to FIGS. 1-5, the electric toothbrush of the present invention includes a toothbrush housing 901, wherein the toothbrush housing 901 includes a handle 10, a connecting head 11, a connecting rod 12, and a toothbrush head 14, and the toothbrush head 14. The connecting rod 12 and the connecting head 11 are integrated and can be plugged and connected to the handle 10, and the drive acceleration component 902, the transmission acceleration component 903, and the telescopic component 904 are contained in the handle 10. The drive acceleration component 902 includes a motor 54, a first small gear 35, a first large gear 58, a second large gear 36, and a second small gear 65, and the transmission acceleration is provided. The part 903 includes a rubber belt 31 for transmitting power, a third small gear 64 and a third large gear 66, and the telescopic part 904 includes a telescopic square bar 21 whose left-right movement is controlled by the transmission acceleration part 903. A reciprocating part 905 and a toothbrush head area 906 are installed in the handle 10, the connecting head 11, and the connecting rod 12, and the reciprocating part 905 is controlled to move to the left by the telescopic rod 21. The toothbrush head area 906 includes a rotating block 17 located in the toothbrush head 14, including a push plate 43, a push rod 42, and a return spring 44 that controls the movement of the push plate 43 to the right. The rack plate 37 controls the rotation block 17 and constantly rotates by the action of the left-right movement of the push rod 42, including a rack plate 37 that controls the rotation of the rotation block 17.

As a useful example, the toothbrush housing 901 includes a drive chamber 22 located in the handle 10, and a plug-in connection head 48 is fixedly attached to the left end surface of the handle 10 to connect the connection. The head 11 can be plug-connected and coupled to the plug-in connection head 48, and can be plug-connected and coupled to the plug-in connection head 48 in the right end surface of the connection head 11. A groove 46 is provided, the connecting rod 12 is fixedly attached to the left end surface of the connecting head 11, the toothbrush head 14 is fixedly attached to the left end surface of the connecting rod 12, and the inside of the handle 10. Is provided with a storage chamber 51 that opens upward, a lid 50 is attached to the opening of the storage chamber 51 so as to close, a button 52 is installed on the top end surface of the handle 10, and the drive chamber 22 is provided with a button 52. A battery 55 is installed on the right side, and a charging jack 56 is installed in the right end surface of the handle 10, whereby the connecting head 11 can be pulled out from the plug-in connecting head 48 and replaced, and the battery is replaced through the charging jack 56. The 55 can be charged and a small toothbrush can be put in the storage chamber 51, which is convenient to carry, and the button 52 controls the on / off of the motor 54.

As a useful example, the drive acceleration component 902 includes a first acceleration shaft 60 that is rotatably mounted in the bottom wall of the drive chamber 22, and the motor 54 is on the right end face of the drive chamber 22. A first bevel gear 53 is fixedly attached to the output shaft on the left side of the motor 54, and a second bevel gear 57 that meshes with the first bevel gear 53 is fixedly attached to the first acceleration shaft 60. Is fixedly attached, the first large gear 58 is fixedly attached to the first acceleration shaft 60, and the first acceleration shaft 34 is fixedly attached to the left side of the first acceleration shaft 60 on the bottom wall of the drive chamber 22. Is mounted so that it can rotate, the first small gear 35 is fixedly attached to the first acceleration shaft 34, the first small gear 35 meshes with the first large gear 58, and the second large gear 36 Is fixedly attached to the first acceleration shaft 34, and is attached to both front and rear sides of the first acceleration shaft 34 between the upper and lower walls of the drive chamber 22 so that the second acceleration shaft 32 can rotate symmetrically. The second small gear 65 is fixedly attached to the second acceleration shaft 32, the second small gear 65 meshes with the second large gear 36, and the transmission acceleration component 903 is the second acceleration shaft 32. A first pulley 33 that is fixedly attached to the drive chamber 22 is included, and two anteroposterior-symmetrical acceleration transmission shafts 27 are rotatably attached between the upper and lower walls of the drive chamber 22 and are attached to the acceleration transmission shaft 27. The two pulleys 26 are fixedly attached, the rubber belt 31 is attached so as to be able to transmit between the second pulley 26 and the first pulley 33, and the third large gear 66 is fixed to the acceleration transmission shaft 27. The third small gear 64 is attached to the left side of the acceleration transmission shaft 27 so that two front-to-back symmetrical transmission shafts 23 can rotate between the upper and lower walls of the drive chamber 22. The third small gear 64 is fixedly attached to the 23, the third small gear 64 meshes with the third large gear 66, and the transmission half gear 90 is fixedly attached to the transmission shaft 23, whereby the first is when the motor 54 is started. The one bevel gear 53 is rotationally interlocked, the first bevel gear 53 is meshed to rotate and interlock the second bevel gear 57 and the first acceleration shaft 60, and the first acceleration shaft 60 is rotationally interlocked with the first large gear 58. The first large gear 58 rotates and interlocks the first small gear 35 and the first acceleration shaft 34 by meshing, the first acceleration shaft 34 rotates and interlocks the second large gear 36, and the second large gear 36 rotates and interlocks. The second small gear 65 and the second acceleration shaft 32 are rotationally interlocked, and the second acceleration shaft 3 2 rotates and interlocks the first pulley 33, the first pulley 33 transmits and interlocks the rubber belt 31, the rubber belt 31 rotates and interlocks the second pulley 26 and the acceleration transmission shaft 27, and the acceleration transmission shaft 27 rotates and interlocks the third large gear 66. The third large gear 66 is rotationally interlocked with the third small gear 64 by meshing, and the third small gear 64 is rotationally interlocked with the transmission shaft 23 and the transmission half gear 90.

As a useful example, the telescopic component 904 includes a fixed base 63 that is fixedly attached to the bottom wall of the drive chamber 22, and a guide base 28 is fixedly attached to the top end surface of the fixed base 63. The telescopic bar 21 is mounted so as to be slidable in the guide base 28, and the limit block 62 is fixedly mounted on the right end face of the telescopic bar 21 so that the front and rear end faces of the telescopic bar 21 can be fixedly mounted. A side rack 24 is installed on the front and rear, a first half ring gear 25 that meshes with the side rack 24 is installed half a circumference on the outer end faces of the transmission half gear 90 on both front and rear sides, and the reciprocating component 905 is the connecting rod 12. An expansion / contraction chamber 45 located inside is included, an insertion connection square hole 47 is provided in communication between the expansion / contraction chamber 45 and the insertion groove 46, and the expansion / contraction bar 21 is provided with the insertion square hole. It is slidably coupled to 47 and can enter the telescopic chamber 45, the push plate 43 is slidably mounted between the inner walls of the telescopic chamber 45, and the push rod 42 is the push. The return spring 44 is fixedly attached to the left end surface of the plate 43, the return spring 44 is fixedly attached between the left side wall of the telescopic chamber 45 and the left end surface of the push plate 43, and the telescopic square bar 21 is the push. When the right end surface of the plate 43 can be contacted, thereby moving and interlocking the telescopic square bar 21 through meshing when the transmission half gear 90 rotates, and when the rear first half ring gear 25 and the rear side rack 24 mesh with each other. The telescopic bar 21 is moved to the right and interlocked, and after the meshing is released, the first half ring gear 25 on the front side meshes with the side rack 24 on the front side to move the telescopic bar 21 to the left. When the telescopic bar 21 moves back and forth to the left and right, the push plate 43 is pushed and moves to the left, and when the telescopic bar 21 moves to the right, the push plate 43 returns. It moves to the right by the action of 44.

As a useful and exemplary example, the toothbrush head area 906 includes a toothbrush head chamber 18 located within the toothbrush head 14, with the push rod 42 entering the toothbrush head chamber 18 to the left and the push. The rotary push plate 41 is fixedly attached to the left end surface of the plate 43, the rack plate 37 is fixedly attached to the left end surface of the rotary push plate 41 so as to be symmetrical in the front-rear direction, and the acceleration transmission shafts on both front and rear sides are fixedly attached. A double-sided rack 38 is installed on the opposite end surface of 27, the rotating block 17 is installed in the toothbrush head chamber 18, and between the rotating block 17 and the bottom wall of the toothbrush head chamber 18. The ball 16 is attached so as to be rotatable, a second half ring gear 40 that meshes with the double-sided rack 38 is installed on the outer end surface of the rotation block 17, and the toothbrush head 14 is attached to the top end surface of the rotation block 17. A turntable 15 on the same horizontal plane as the top end face is fixedly attached, a limit ring 20 is installed on the outside of the turntable 15, and a brush is applied to the top end face of the turntable 15 and the top end face of the toothbrush head 14. 13 is installed, and when the push rod 42 moves left and right, the rotary push plate 41 is moved and interlocked left and right, the rack plate 37 is moved and interlocked left and right, and the rear double-sided rack 38 is the second half ring gear 40. After meshing, the rotary block 17 is rotationally interlocked, and when the rotary push plate 41 moves to the right, the front double-sided rack 38 is meshed to rotate and interlock the second half ring gear 40, and the rotary block 17 is constantly rotationally interlocked. Due to the limitation of the limit ring 20, the rotating block 17 remains in its original position.

When in use, the button 52 is pressed to start the motor 54, the first captive gear 53 is rotationally interlocked, and the first captive gear 53 is meshed to rotate and interlock the second captive gear 57 and the first acceleration shaft 60. The acceleration shaft 60 rotates and interlocks the first large gear 58, the first large gear 58 rotates and interlocks the first small gear 35 and the first acceleration shaft 34 by meshing, and the first acceleration shaft 34 rotates and interlocks the second large gear 36. , The second large gear 36 is meshed to rotate the second small gear 65 and the second acceleration shaft 32, the second acceleration shaft 32 is rotationally linked to the first pulley 33, and the first pulley 33 is The rubber belt 31 is transmitted and interlocked, the rubber belt 31 is rotationally interlocked with the second pulley 26 and the acceleration transmission shaft 27, the acceleration transmission shaft 27 is rotationally interlocked with the third large gear 66, and the third large gear 66 is meshed with the third small gear. The gear 64 is rotationally interlocked, the third small gear 64 is rotationally interlocked between the transmission shaft 23 and the transmission half gear 90, the transmission half gear 90 is meshed to move and interlock the telescopic square rod 21, and the rear first half ring gear. When the 25 and the rear side rack 24 mesh with each other, the telescopic square bar 21 is moved to the right and interlocked, and after the meshing is released, the front first half ring gear 25 meshes with the front side rack 24 and the telescopic square bar 21. 21 is moved and interlocked to the left, whereby the telescopic square bar 21 moves back and forth to the left and right, pushes the push plate 43 and moves it to the left, and when the telescopic square bar 21 moves to the right, the push plate 43 returns. It moves to the right by the action of 44, and when the push rod 42 moves left and right, the rotary push plate 41 moves left and right, the rack plate 37 moves left and right, and the rear double-sided rack 38 moves in the second half. After meshing with the ring gear 40, the rotary block 17 is rotationally interlocked, and when the rotary push plate 41 moves to the right, the front double-sided rack 38 is meshed to rotate and interlock the second half ring gear 40, and the rotary block 17 is constantly rotated. Interlock and start brushing your teeth.

Benefits of the invention: The invention is simple in structure, convenient to operate, installs three ranks of acceleration in the device, greatly improves the speed of transmission, two first half ring gears and a double-sided rack 38. By interlocking the expansion and contraction of the telescopic square bar with the interval coupling with, the left and right movement of the push rod is interlocked, and the indirect connection between the two double-sided rack 38 and the second half ring gear realizes the continuous rotation of the rotating block. Moreover, it has a high rotation speed, quickly removes food debris left in the gaps between teeth, has a strong cleaning effect, is essentially distinct from traditional eccentric shaft electric toothbrushes, has high cost performance, and is stored. It has space, is convenient to use, and has advertising value. ..

Engineers in this field can clarify that various modifications can be made to the above examples if they do not depart from the general spirit and ideas of the present invention, and all of these modifications are within the scope of the present invention. The protection plan of the present invention should be standardized on the claim of the present invention.

Claims (5)

The toothbrush housing includes a handle, a connecting head, a connecting rod and a toothbrush head, and the toothbrush head, the connecting rod and the connecting head are integrated and are plugged and connected to the handle. A drive acceleration component, a transmission acceleration component, and an expansion / contraction component are installed in the handle, and the motor, the first small gear, the first large gear, and the first gear provided by the drive acceleration component are provided. The telescopic part includes a rubber belt including two large gears and a second small gear, and the transmission acceleration component transmits power, and the third small gear and the third large gear, and the expansion and contraction component moves left and right by the transmission acceleration component. A reciprocating part and a toothbrush head area are installed in the handle, the connecting head, and the connecting rod, including a telescopic square bar to control, and the reciprocating part is moved to the left by the telescopic square bar. A rotation block in which the toothbrush head area is located within the toothbrush head and rotation of the rotation block, including a push plate to control, a push rod, and a return spring to control the movement of the push plate to the right. An electric toothbrush comprising a rack plate for controlling the number of gears, wherein the rack plate controls the rotation block to continuously rotate by the action of the left-right movement of the push rod. The toothbrush housing includes a drive chamber located in the handle, a plug-in coupling head is fixedly attached to the left end surface of the handle, and the coupling head is plugged and coupled to the plug-in coupling head to be coupled. In the right end surface of the connecting head, an insertion connecting groove that can be inserted and connected to the insertion connecting head is provided, and the connecting rod is fixed to the left end surface of the connecting head. The toothbrush head is fixedly attached to the left end surface of the connecting rod, the handle is provided with an upwardly open storage chamber, and the lid is closed at the opening of the storage chamber. The claim is characterized in that a button is installed on the top end face of the handle, a battery is installed on the right side of the drive chamber, and a charging jack is installed in the right end surface of the handle. Item 1. The electric toothbrush according to Item 1. The drive accelerating component includes a first accelerating shaft that is rotatably mounted in the bottom wall of the drive chamber, the motor is fixedly mounted on the right end face of the drive chamber, and the output shaft on the left side of the motor. The first bevel gear is fixedly attached to the first acceleration shaft, the second bevel gear that meshes with the first bevel gear is fixedly attached to the first acceleration shaft, and the first large gear is fixedly attached to the first acceleration shaft. It is fixedly attached, and is attached so that the first acceleration shaft can rotate on the left side of the first acceleration shaft on the bottom wall of the drive chamber, and the first small gear is fixedly attached to the first acceleration shaft. The first small gear meshes with the first large gear, the second large gear is fixedly attached to the first acceleration shaft, and the front and rear of the first acceleration shaft are between the upper and lower walls of the drive chamber. The second small gear is attached to both sides so that the second acceleration shaft can rotate symmetrically, the second small gear is fixedly attached to the second acceleration shaft, and the second small gear meshes with the second large gear. The transmission acceleration component includes a first pulley fixedly attached to the second acceleration shaft, and two front-to-back symmetrical acceleration transmission shafts are mounted so as to be rotatable between the upper and lower walls of the drive chamber. A second pulley is fixedly attached to the acceleration transmission shaft, the rubber belt is attached so as to be able to transmit between the second pulley and the first pulley, and the third large gear is attached to the acceleration transmission shaft. It is fixedly attached, and is attached to the left side of the acceleration transmission shaft between the upper and lower walls of the drive chamber so that two front-to-back symmetrical transmission shafts can rotate, and the third small gear is fixed to the transmission shaft. The electric toothbrush according to claim 1, wherein the third small gear meshes with the third large gear, and a transmission half gear is fixedly attached to the transmission shaft. The telescopic component includes a fixed base that is fixedly attached to the bottom wall of the drive chamber, a guide base is fixedly attached to the top end surface of the fixed base, and the telescopic square bar slides into the guide base. A limit block is fixedly attached to the right end surface of the telescopic bar, side racks are attached to the front and rear end faces of the telescopic bar, and the outer end faces of the transmission half gears on both front and rear sides are installed so as to be possible. Is equipped with a first half ring gear that meshes with the side rack half a circumference, includes a telescopic chamber in which the reciprocating component is located in the connecting rod, and is inserted between the telescopic chamber and the insertion groove. The connecting square holes are provided so as to communicate with each other, and the telescopic square bar can be slidably coupled to the insertion square hole to enter the telescopic chamber, and the push plate is attached to the inner wall of the telescopic chamber. Attached so that it can slide between, the push rod is fixedly attached to the left end face of the push plate, and the return spring is fixedly attached between the left wall of the telescopic chamber and the left end face of the push plate. The electric toothbrush according to claim 1, wherein the telescopic square bar is attached and can come into contact with the right end surface of the push plate. The toothbrush head area includes a toothbrush head chamber located within the toothbrush head, the push rod enters the toothbrush head chamber to the left, and a rotary push plate is fixedly attached to the left end surface of the push plate. The rack plate is fixedly attached to the left end surface of the rotary push plate so as to be symmetrical in the front-rear direction, and a double-sided rack is installed on the end faces of the acceleration transmission shafts on both front and rear sides on the relative side so that the rotation block can be mounted. It is installed in the toothbrush head chamber and is mounted so that the ball can rotate between the rotating block and the bottom wall of the toothbrush head chamber, and the outer end surface of the rotating block can mesh with the double-sided rack. A second half ring gear is installed, a turntable on the same horizontal plane as the top end face of the toothbrush head is fixedly attached to the top end face of the rotation block, and a limit ring is installed outside the turntable. The electric toothbrush according to claim 1, wherein a brush is installed on the top end face of the turntable and the top end face of the toothbrush head.

Images