CN105997287A - Double-shaft electric toothbrush - Google Patents

Abstract

The invention discloses a double-shaft electric toothbrush, which relates to the field of articles for daily use and comprises a handle, a connecting rod and a brush head, wherein a motor is arranged in the handle, a transmission mechanism is arranged in the connecting rod, the brush head comprises a protective shell, two rotating shafts which are parallel to each other and provided with a plurality of hairbrushes on the surfaces are arranged in the protective shell, a convex strip is arranged between the two rotating shafts on the inner surface of the protective shell, and a strip-shaped groove is arranged on the front surface of the convex strip. The invention has the beneficial effects that: when the tooth brushing machine is used, the two rotating shafts with the brushes are placed in the mouth in a mode of respectively corresponding to the upper teeth and the lower teeth, the motor enables the two rotating shafts to rotate towards opposite directions through the transmission mechanism, and the upper teeth and the lower teeth can be simultaneously brushed. When the two rotating shafts rotate in opposite directions, the brushes of the two rotating shafts are scraped and rubbed with the front faces of the raised lines, so that sundries and dirt of the brushes are removed and collected in the grooves.

Description

A dual-axis electric toothbrush

technical field

The invention relates to the field of daily necessities, in particular to a biaxial electric toothbrush.

Background technique

The electric toothbrush is a new generation of daily necessities that use the rapid rotation or vibration of the motor core to make the brush head generate high-frequency vibrations, instantly decompose the toothpaste into fine foam, and deeply clean the teeth. The existing electric toothbrush includes a handle, a connecting rod and a brush head. A motor for driving the brush head to rotate or vibrate is installed inside the handle. Brushed strip plates. The following problems generally exist in existing electric toothbrushes: 1. It is impossible to clean the upper and lower teeth at the same time. 2. The brush head is difficult to clean. After a long period of use, it is easy to leave debris in the brush head and generate dirt, especially on the surface of the brush, which affects hygiene. 3. The brush head part is difficult to disassemble or replace, resulting in the problem that the brush head cannot be cleaned and cannot be replaced after damage. 4. After the brush is used for a long time, impurities are easy to remain on the surface and bacteria can breed, but the existing electric toothbrush does not have the function of cleaning the brush. Visible, need to design a kind of novel electric toothbrush that can overcome the problems referred to above and bring convenience to people's life.

Contents of the invention

The invention provides a biaxial electric toothbrush, aiming at solving the disadvantages that the existing electric toothbrush cannot clean the upper and lower teeth at the same time, and the brush head is difficult to clean and replace.

The present invention adopts following technical scheme:

A two-axis electric toothbrush, including a handle, a connecting rod and a brush head connected in sequence, a battery, a motor and a control circuit are arranged inside the handle, a transmission mechanism is arranged inside the connecting rod, and the brush head includes a connecting rod A detachably connected protective shell, the protective shell is in the shape of a semi-elliptical cylinder. Two rotating shafts parallel to each other and with a plurality of brushes on the surface are installed in the protective shell. The inner surface of the protective shell is provided between the two rotating shafts. There is a protruding bar, the front of the protruding bar is provided with a bar-shaped groove extending along its length direction; when the motor rotates the two rotating shafts in opposite directions through the transmission mechanism, the brushes of the two rotating shafts are connected with the protruding bar face each other.

Further, the transmission mechanism includes a transmission shaft, a fourth gear and two connecting shafts, one end of the transmission shaft is linked with the output shaft of the motor, and the other end is provided with a first gear and a third gear; the transmission shaft is located between two Between the connecting shafts, one end of one of the connecting shafts is provided with a second gear, and the other end is connected to one of the rotating shafts, and one end of the other connecting shaft is provided with a fifth gear, and the other end is connected to the other rotating shaft , the first gear meshes with the second gear, and the third gear, fourth gear and fifth gear mesh sequentially.

Further, the first gear and the second gear are the same, and the third gear, the fourth gear and the fifth gear are all the same.

Further, one end of the connecting rod is provided with a lower connecting portion, and the other end is provided with an upper connecting portion, the lower connecting portion is detachably arranged on the handle through a threaded connection, and the protective shell is detachably connected through a buckle connection. Set on the upper connection part.

Further, the output shaft of the motor is provided with a polygonal blind hole, and the lower end of the transmission shaft is provided with a docking section matching the blind hole, and the docking section is detachably inserted into the blind hole; the upper connecting part An installation cavity is provided, and one end of the two connecting shafts is rotatably arranged on the upper connecting portion, and the other end is detachably connected to the corresponding rotating shaft.

Further, it also includes a sealing cover buckled with the protective shell, the sealing cover is in the shape of a semi-elliptic cylinder, and the inner surface of the sealing cover is provided with a plurality of cylinders which conflict with the brushes.

Further, a plurality of teeth are provided on both sides of the groove along the length direction of the front surface of the protruding strip.

Further, the distance between the inner surface of the protective shell and the surface of the rotating shaft is smaller than the length of the brush.

Further, the inner surface of the protective shell is provided with a plurality of protrusions.

As can be seen from the above description of the structure of the present invention, the present invention has the following advantages:

One, the present invention includes a handle, a connecting rod and a brush head, a motor is arranged inside the handle, a transmission mechanism is arranged inside the connecting rod, the brush head includes a protective shell, and two brushes parallel to each other are installed in the protective shell and the surface is provided with a plurality of The rotating shaft of the root brush, the inner surface of the protective shell is provided with a convex strip between the two rotating shafts, and the front of the convex strip is provided with a bar-shaped groove. When in use, put two rotating shafts with brushes into the mouth so that they correspond to the upper teeth and the lower teeth respectively, and the motor rotates the two rotating shafts in opposite directions through the transmission mechanism, so that the upper teeth and the lower teeth can be brushed simultaneously. And when the two rotating shafts rotated in the opposite direction, the hair brushes of the two rotating shafts all scratched against the front of the protruding bar, and the sundries and dirt of the hair brush were removed and collected in the groove, so as to remove sundries and dirt.

Second, the present invention also includes a sealing cover, and the inner surface of the sealing cover is provided with a plurality of cylinders that conflict with the brushes. When the electric toothbrush does not need to be used, the sealing cover can be matched with the protective shell to completely seal and wrap the brush, so as to keep the brush and other inner surfaces of the brush head clean. When the sealing cover is set on the protective shell, the cylinder and the brush are in conflict, which is the start of the motor, and the brush rotates relative to the cylinder, and the brush and the cylinder scratch each other, so that the dirt and impurities on the surface of the brush can be removed. The purpose of cleaning the hair brush is achieved, and has the characteristics of convenient use, fast cleaning and good cleaning effect. In addition, the airtight cover makes it more convenient for people to carry the electric toothbrush when they travel.

Third, in the present invention, the output shaft of the motor is provided with a blind hole, and the lower end of the transmission shaft is provided with a butt joint, and the butt joint is detachably inserted in the blind hole, and cooperates with the threaded connection between the connecting rod and the handle. During the process of rotating and disassembling the connecting rod and the handle, the output shaft gradually separates from the joint section of the transmission shaft; when installing, just align the joint section with the blind hole of the output shaft, and then relatively rotate and assemble the connecting rod and handle. It can be seen that the electric toothbrush is convenient and simple to install and disassemble; one end of the rotating shaft is rotatably arranged on the upper connection part and extends to the installation cavity, and the other end is rotatably arranged on the protective shell, which is compatible with the detachable characteristics of the protective shell and the connecting rod. When cleaning the brush head, the protective shell can be disassembled to clean the inner surface of the protective shell. After the protective shell is disassembled, it is also convenient for the user to clean the surface of the rotating shaft and the surface of the brush.

Fourth, in the present invention, the connecting shaft of the rotating shaft and the transmission mechanism is detachably connected, and when the brush is damaged, a new rotating shaft can be easily replaced.

Fifth, in the present invention, a plurality of teeth are provided on both sides of the groove along the length direction of the front surface of the convex strip. When the brush rubs against the convex strips, the uneven surface formed by these teeth can better remove the sundries and dirt on the brush.

Its six, in the present invention, the distance between the inner surface of the protective shell and the surface of the rotating shaft is less than the length of the brush, which can make the volume of the whole brush head smaller, so that people can better brush the inner surface of the teeth; When the rotating shaft rotates, it will rub against the protective shell, which is easy to remove the sundries on the brush, and the multiple protrusions on the inner surface of the protective shell can strengthen the obstruction between the brush and the inner surface of the protective shell, and strengthen the ability to remove sundries. Effect.

Description of drawings

Fig. 1 is a schematic structural view of the present invention (the brush is not drawn).

Fig. 2 is a cross-sectional view of the present invention (the brush is not drawn).

Fig. 3 is a sectional view of the present invention along the direction A-A in Fig. 1 .

Fig. 4 is a cross-sectional view of the protective case along the direction B-B in Fig. 1 .

FIG. 5 is an enlarged schematic view of part F in FIG. 2 .

FIG. 6 is an enlarged schematic view of part G in FIG. 2 .

FIG. 7 is an enlarged schematic view of part H in FIG. 2 .

Fig. 8 is a schematic diagram of the structure of the sealing cover.

Fig. 9 is a sectional view of the sealing cover along the direction C-C in Fig. 8 .

Fig. 10 is a cross-sectional view of the present invention along the direction A-A in Fig. 1 when the sealing cover and the protective case are closed.

detailed description

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , a dual-axis electric toothbrush includes a handle 1 , a connecting rod 2 and a brush head 3 sequentially connected. Handle 1 is cylindrical, also can be the existing other shapes of toothbrush handle. The inside of the handle 1 is provided with a battery a3, a motor a1 and a control circuit a2 electrically connected to each other. A manipulation button 11 is provided on the surface of the handle 1 .

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the brush head 3 includes a protective shell 5 detachably connected with the connecting rod 2 . The protective shell 5 is in the shape of a semi-elliptical cylinder. Two rotating shafts 6 and 7 are installed in the protective shell 5 and are parallel to each other and have a plurality of brushes 100 on the surface. The inner surface of the protective case 5 is provided with a convex strip 51 between the rotating shaft 6 and the rotating shaft 7, and the front of the convex strip 51 is provided with a strip-shaped groove 511 extending along its length direction; the motor a1 makes the rotating shaft 6 and the shaft 5 through the above-mentioned transmission mechanism When the rotating shaft 7 rotates in the opposite direction, the brushes 100 of the rotating shaft 6 and the rotating shaft 7 all rub against the front of the protruding strip 51 .

Referring to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 , one end of the connecting rod 2 is provided with a lower connecting portion 21 , and the other end is provided with an upper connecting portion 22 . The lower connecting part 21 is detachably arranged on the handle 1 through a screw connection, and the lower end of the protective shell 5 is manually detachably arranged on the upper connecting part 22 through a buckle connection. The user can take off the protective case 5 to clean the inner surface of the protective case 5 and other hidden parts of the brush head 3 .

1 , 2 , 5 and 6 , the transmission mechanism includes a transmission shaft 4 , a fourth gear b4 , a connecting shaft e1 and a connecting shaft e2 . The upper connection part 22 is provided with a mounting cavity 200, and the transmission shaft 4 is rotatably installed in the connection rod 2, wherein one end of the transmission shaft 4 extends outside the lower connection 21 and is linked with the output shaft a11 of the motor a1, and the other end It extends into the installation cavity 200 and is provided with a first gear b1 and a third gear b3. The connection shaft e1 and the connection shaft e2 are rotatably provided on the upper connection part 22, and the transmission shaft 4 is located between the connection shaft e1 and the connection shaft e2. One end of the connecting shaft e2 is provided with a second gear b2 in the installation cavity 200, and the first gear b1 meshes with the second gear b2, and the other end of the connecting shaft e2 extends out of the upper connecting portion 22 and is connected with the rotating shaft 7; One end of the shaft e1 is provided with the fifth gear b5 in the installation cavity 200, and the third gear b3, the fourth gear b4 and the fifth gear b5 are meshed in sequence, and the other end of the connecting shaft e1 extends to the outside of the upper connecting part 22 and connects with the rotating shaft 6 connected.

Referring to Fig. 2 and Fig. 6, as a preferred solution: the first gear b1 and the second gear b2 are of the same size, and the third gear b3, the fourth gear b4 and the fifth gear b5 are all of the same size.

Referring to Fig. 2, Fig. 4, Fig. 5 and Fig. 6, the output shaft a11 of the motor a1 is provided with a polygonal blind hole a111, and the lower end of the transmission shaft 4 is provided with a docking section 41 matching the blind hole a111. The docking section 41 is detachably inserted into the blind hole a111 . The connecting shaft e1 is provided with a polygonal connecting post e11 , and the rotating shaft 6 is provided with a connecting hole 61 matching with the connecting post e11 , and the connecting post e11 is detachably inserted into the connecting hole 61 . The connecting shaft e2 is provided with a polygonal connecting post e21 , and the rotating shaft 7 is provided with a connecting hole 71 matching with the connecting post e21 , and the connecting post e21 is detachably inserted into the connecting hole 71 . The other ends of the rotating shaft 6 and the rotating shaft 7 are respectively rotatably disposed in the blind hole 52 and the blind hole 53 of the protective case 5 . When the brush is damaged and needs to be replaced with new rotating shaft 6 and rotating shaft 7, it is only necessary to take off the protective case 5, disassemble the rotating shaft 6 and rotating shaft 7 and the connecting shaft e1 and connecting shaft e2 for replacement.

Referring to FIG. 2 , FIG. 3 and FIG. 7 , a plurality of teeth 512 are provided on both sides of the groove 511 on the front side of the protruding bar 51 along its length direction. When the brush 100 and the protruding bar 51 rub against each other, the uneven surface formed by the plurality of teeth 512 can better remove sundries and dirt on the brush 100 .

Referring to FIG. 2 and FIG. 3 , the distance between the inner surface of the protective case 5 and the surfaces of the rotating shaft 7 and the rotating shaft 6 is smaller than the length of the brush 100 . The inner surface of the protective shell 5 is provided with a plurality of protrusions (not shown in the figure).

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 8, Fig. 9 and Fig. 10, the electric toothbrush also includes a sealing cover 8 which is engaged with the protective shell 5, the sealing cover 8 is in the shape of a semi-ellipse cylinder, and the sealing cover The inner surface of 8 is provided with a plurality of small cylinders 81 that conflict with the brush 100 , and the sealing cover 8 is detachably arranged on the protective shell 5 . As a preferred solution: a plurality of small cylinders 81 are arranged into two rectangular matrices, and the two rectangular matrices form a one-to-one correspondence with the rotating shaft 6 and the rotating shaft 7, and the upper end surface of the rectangular matrix corresponding to the rotating shaft 6 is the center of the circle and the rotating shaft 6. The arc-shaped curved surface with the center of the circle coincident, the upper end surface of the rectangular matrix corresponding to the rotating shaft 7 is an arc-shaped curved surface with the center of the circle coincident with the center of the rotating shaft 7 . When the electric toothbrush does not need to be used, the sealing cover 8 is buckled on the protective shell 5, which can prevent dust or small debris from sticking to the brush 100, and can ensure the cleanliness of the brush head 3. And when needs brush teeth, take off sealing cover 8 and get final product. When it is necessary to simply clean the brush 100, the brush 100 can be wetted, and then the sealing cover 8 can be buckled on the protective shell 5 and the motor a1 can be started, so that the brush 100 can rotate and rub against the cylinder 81, thereby removing Dirt and impurities remaining on the surface of the brush 100.

Referring to Figure 1, Figure 2 and Figure 3, the usage method of the present invention: (1) apply the toothpaste base on the rotating shaft 6 and the rotating shaft 7; 7 is facing the surface of the teeth; (3) Start the motor a1 to make the rotating shaft 6 and the rotating shaft 7 rotate in opposite directions. Remove the debris and dirt on the teeth; when the brush 100 rotates into the protective shell 5, it rubs against the protruding strip 51, so that part of the debris and dirt left on the brush 100 is scraped off and collected in the groove 511 At the same time, the brush 100 rubs against the inner surface of the protective shell 5 to further remove debris; (4) After cleaning the teeth, stop the motor a1, immerse the brush head 3 in water, start the motor a1 again, and let the rotating shaft 6 Rotate with rotating shaft 7, to remove sundries and dirt on the hairbrush 100 and the protective shell 5.

The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any non-substantial changes made to the present invention by using this concept should be an act of violating the protection scope of the present invention.

Claims (9)

1. A two-axis electric toothbrush, comprising a handle, a connecting rod and a brush head connected sequentially, the inside of the handle is provided with a battery, a motor and a control circuit, it is characterized in that: the inside of the connecting rod is provided with a transmission mechanism, the The brush head includes a protective shell detachably connected with the connecting rod. The protective shell is in the shape of a semi-elliptic cylinder. Two rotating shafts parallel to each other and with a plurality of brushes on the surface are installed in the protective shell. The inner surface of the protective shell is between two sides. There is a convex line between the shafts, and the front of the convex line is provided with a strip-shaped groove extending along its length direction; when the motor rotates the two shafts in opposite directions through the transmission mechanism, the two shafts The brushes all rub against the front of the convex strip. 2. A kind of biaxial electric toothbrush according to claim 1, characterized in that: the transmission mechanism includes a transmission shaft, a fourth gear and two connecting shafts, one end of the transmission shaft is linked with the output shaft of the motor, The other end is provided with a first gear and a third gear; the transmission shaft is located between two connecting shafts, one end of one connecting shaft is provided with a second gear, the other end is connected with one of the rotating shafts, and the other connecting shaft There is a fifth gear at one end, and the other end is connected with the other rotating shaft, the first gear meshes with the second gear, and the third gear, the fourth gear and the fifth gear mesh sequentially. 3. A two-axis electric toothbrush according to claim 2, characterized in that: the first gear is the same as the second gear, and the third gear, the fourth gear and the fifth gear are all the same. 4. A two-axis electric toothbrush according to claim 1 or 2, characterized in that: one end of the connecting rod is provided with a lower connection part, and the other end is provided with an upper connection part, and the lower connection part is connected by a thread The protective shell is detachably arranged on the handle by means of a buckle connection, and the protective shell is detachably arranged on the upper connection part by means of a buckle connection. 5. A double-axis electric toothbrush according to claim 4, characterized in that: the output shaft of the motor is provided with a polygonal blind hole, and the lower end of the transmission shaft is provided with a butt joint matching the blind hole, so The docking section is detachably inserted into the blind hole; the upper connecting part is provided with a mounting cavity, and one end of the two connecting shafts is rotatably arranged on the upper connecting part, and the other end is detachably connected to the corresponding rotating shaft. 6. A two-axis electric toothbrush according to claim 1, characterized in that: it also includes a sealing cover that is fastened with the protective shell, the sealing cover is in the shape of a semi-elliptical cylinder, and the inner surface of the sealing cover is provided with A plurality of cylinders that conflict with the brush. 7. A two-axis electric toothbrush according to claim 1, characterized in that: the front side of the protruding strip is provided with a plurality of teeth along the length direction of the groove on both sides of the groove. 8. A two-axis electric toothbrush according to claim 1, characterized in that: the distance between the inner surface of the protective shell and the surface of the rotating shaft is smaller than the length of the brush. 9. A two-axis electric toothbrush according to claim 8, characterized in that: the inner surface of the protective shell is provided with a plurality of protrusions.