CN112451146A

CN112451146A - Electric toothbrush

Info

Publication number: CN112451146A
Application number: CN202010918179.4A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-08
Filing date: 2020-09-03
Publication date: 2021-03-09

Abstract

An electric toothbrush for cleaning teeth is composed of a main toothbrush body and a toothbrush head, which are connected together, a battery is connected to a switch, the switch is connected to a motor, the motor is connected to a crank mechanism or a synchronous mechanism, and the battery and the motor provide power to convert the rotation of the motor into a circling action of a connecting rod under the action of the connection of the crank mechanism and the synchronous mechanism, so as to drive the toothbrush head connected to the connecting rod to perform the same circling action as the connecting rod, thereby cleaning teeth.

Description

Electric toothbrush

Technical Field

The invention relates to an electric toothbrush, in particular to a toothbrush with a toothbrush head capable of greatly moving when in work.

Background

The conventional rotary electric toothbrush mainly comprises a toothbrush main body and a toothbrush head, wherein the toothbrush main body comprises a shell, an electric motor, a transmission mechanism, a battery and a control assembly, the electric motor is connected with the transmission mechanism, and the battery is connected with the electric motor through the control assembly; the toothbrush head consists of a rotary brush, a toothbrush arm and a linkage mechanism, the rotary brush and the linkage mechanism are arranged on the toothbrush arm, and the rotary brush is connected with the linkage mechanism; the toothbrush head is connected with the toothbrush main machine through a toothbrush arm, and the rotary brush of the toothbrush head is connected with the transmission mechanism of the toothbrush main machine through a linkage mechanism. In the conventional rotary electric toothbrush, the rotary action of the motor is realized by the rotary action of the rotary brush through the transmission mechanism and the linkage mechanism. In order to support the revolving brush to smoothly revolve on the toothbrush arm, a large movable gap is reserved between the revolving brush and the toothbrush arm, the movable gap is positioned in the oral cavity when in use, and the movable gap is a large sanitary dead angle. As can be seen from the above, the conventional rotary electric toothbrush has the defects of complex structure of the toothbrush head and large sanitary dead angle in the oral cavity when in use.

Disclosure of Invention

In order to overcome the defects of complex structure and larger sanitary dead angle of the toothbrush head of the conventional rotary electric toothbrush, the invention provides the electric toothbrush, and the toothbrush head of the electric toothbrush has a simple structure and does not have the larger sanitary dead angle in the oral cavity in use.

The technical scheme adopted by the invention for solving the technical problems is as follows: the electric toothbrush is provided with a connecting rod and a toothbrush head, the connecting rod and the toothbrush head are both designed to do the circling action, the connecting rod realizes two-point limiting and the circling action by connecting 2 crank connecting rod shafts which are same in direction and synchronously rotate, and the toothbrush head realizes the circling action by connecting with the connecting rod; the two ends of the connecting rod are respectively a passive end and an active end, the passive end of the connecting rod is connected with connecting rod shafts of 2 crank mechanisms, the 2 crank mechanisms are arranged on the bearing frame through a main shaft, the 2 crank mechanisms are mutually connected through a synchronous mechanism, meanwhile, the crank mechanisms are connected with output shafts of the motors, the motors are connected with batteries through switches, the active ends of the connecting rods are connected with the toothbrush heads, and the bearing frame is fixedly connected with the shell; the driven end of the connecting rod, the 2 crank mechanisms, the synchronizing mechanism, the bearing frame, the motor and the battery are arranged in the toothbrush shell, and the driving ends of the toothbrush head and the connecting rod are arranged outside the shell; the main shafts of the 2 crank mechanisms are parallel, the connecting rod shafts of the 2 crank mechanisms are arranged in the same direction, and the 2 crank mechanisms are arranged in the same-speed rotation mode. The connecting rod performs a circling action, namely the connecting rod performs a circling movement action in the same direction as a whole; the toothbrush head performs the circling action, which means that the toothbrush head performs the same-direction circling movement action as a whole. The synchronous mechanism is a gear, a connecting rod or a chain, and the number of the crank mechanisms can be more than 2. The 2 cranks rotate in the same direction and at the same speed through a synchronous mechanism. The synchronous mechanism is connected with the crank mechanism in a meshing way when adopting gears, and the synchronous mechanism is also provided with corresponding transmission gears. The functional circuit board can be added in the circuit to make the motor rotate forward or backward and control the alternating time of forward and backward rotation of the motor. In use, closed switch makes motor and battery intercommunication work, and motor drive crank mechanism rotates, and 2 crank mechanism synchronous rotations under synchro mechanism's effect, and the connecting rod axle on 2 crank mechanism is the planet action of doing with the directive this moment, the directive is exactly the radial direction of crank mechanism main shaft, 2 are the connecting rod axle of planet action of doing with the directive, spacing and pushing connecting rod do same planet action, this planet action just becomes drawing circle action, the connecting rod is drawn circle action and is made the toothbrush head and also do the drawing circle action to the toothbrush hair on the toothbrush head is drawn circle action and is cleaned the tooth. As can be seen from the above, the toothbrush head of the electric toothbrush of the present invention, having only bristles and a toothbrush arm, has no large hygienic dead space in the oral cavity in use and has a simple structure.

In the electric toothbrush, more than 2 crank mechanisms may be used, but the use of 2 crank mechanisms is already ideal, so the use of 2 crank mechanisms is optimal. The toothbrush head may be provided with a certain curvature for ease of use.

The electric toothbrush has the beneficial effects that the toothbrush head of the electric toothbrush is simple in structure, and has no large sanitary dead angle in the oral cavity when in use.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is an external view of the first embodiment of the present invention, and is also a view in which a brush head (2) is separated from a brush main body (1).

Fig. 2 is an internal structural view of the first embodiment of the present invention.

Fig. 3 is an internal structural view of the first embodiment of the present invention, and is also a view after parts are labeled in fig. 2.

Fig. 4 is a view of the spindle (8), link shaft (9), synchronizing gear shaft (12) and motor spindle (20) of fig. 3, in an unobstructed view by the carrier or links.

Fig. 5 is a view showing the approximate reality of the synchronizing gear (11), 2 crank wheels (10) and the motor output gear (15) in the first embodiment of the present invention, and also showing the approximate reality of the synchronizing gear (11) meshing with the 2 crank wheels (10), respectively, and the motor output gear (15) meshing with one crank wheel (10); for convenience of drawing, in the figures other than fig. 5, the synchronizing gear (11), the 2 crank wheels (10), and the motor output gear (15) are replaced with simple circles.

Fig. 6 is an internal, visible view from left to right of fig. 3.

Fig. 7 is a view showing the electric toothbrush according to the first embodiment of the present invention, when the crank wheel (10) is rotated to have the link shaft (9) at the upper position; the figure also shows the link (7) at this point in relation to the crank wheel (10) and in position, and also the position of the brush head (2); meanwhile, the drawing is also a schematic drawing when the connecting rod (7) and the toothbrush head (2) are in an upper side position in the circling motion.

Fig. 8 is a view of the electric toothbrush of the first embodiment of the present invention, which is a view when the crank wheel (10) is rotated to make the link shaft (9) in the left position; the figure also shows the link (7) at this point in relation to the crank wheel (10) and in position, and also the position of the brush head (2); meanwhile, the drawing is also a schematic drawing when the connecting rod (7) and the toothbrush head (2) are in the left position in the circling motion.

Fig. 9 is a view of the electric toothbrush of the first embodiment of the present invention, which is a view when the crank wheel (10) is rotated to make the link shaft (9) in a lower position; the figure also shows the link (7) at this point in relation to the crank wheel (10) and in position, and also the position of the brush head (2); meanwhile, the drawing is also a schematic drawing when the connecting rod (7) and the toothbrush head (2) are in a lower position in the circling motion.

Fig. 10 is a view of the electric toothbrush of the first embodiment of the present invention, which is a view when the crank wheel (10) is rotated to make the link shaft (9) in a right position; the figure also shows the link (7) at this point in relation to the crank wheel (10) and in position, and also the position of the brush head (2); meanwhile, the drawing is also a schematic drawing when the connecting rod (7) and the toothbrush head (2) are in the right position in the circling motion.

Fig. 11 is a radial view of the crank wheel (10), main shaft (8) and link shaft (9) in the first embodiment.

Fig. 12 is a view from the left to the right of fig. 11.

Fig. 13 is a view from right to left of fig. 11.

Fig. 14 is an internal view of the second embodiment.

Fig. 15 shows an assembly of a complex crank body, which is a complex of a crank (17) and a gear (21), a connecting rod shaft (9), and a main shaft (8) in the second embodiment.

Fig. 16 is a view from the left to the right of fig. 15.

Fig. 17 is a view from right to left of fig. 15.

Fig. 18 is an internal view of the third embodiment.

Fig. 19 is a view of the crank mechanism and the connecting rod (7) and the sub-connecting rod (25) in fig. 18.

Fig. 20 is a view from the left to the right of fig. 19.

Fig. 21 is a view from right to left of fig. 19.

Fig. 22 is an internal view of the fourth embodiment.

In the figure, 1, a toothbrush main body, 2, a toothbrush head, 3, a toothbrush arm, 4, toothbrush bristles, 5, a shell, 6, a bearing frame, 7, a connecting rod, 8, a main shaft, 9, a connecting rod shaft, 10, a crank wheel, 11, a synchronous gear, 12, a synchronous gear shaft, 13, a battery, 14, a motor, 15, a motor output gear, 16, a switch, 17, a crank, 18, an auxiliary connecting rod, 19, a sealing sleeve, 20, a motor main shaft, 21, a gear, 24, a gear central shaft, 25, an auxiliary crank wheel and 26 are in transmission belt.

In the above figures 7, 8, 9 and 10, the electric toothbrush is shown with the toothbrush head, links and link shafts in the 4 positions of one rotation of the crank wheel, and the toothbrush head, links and link shafts describe one rotation of the ring motion; therefore, the positions and the shapes of the toothbrush head, the connecting rods and the connecting rod shaft which are circled when the crank wheel of the electric toothbrush rotates to any one position can be predicted.

Detailed Description

In the first embodiment shown in fig. 3, the toothbrush main body (1) and the toothbrush head (2) are connected to form an electric toothbrush; in the toothbrush main machine (1), a crank mechanism is formed by welding a crank wheel (10), a main shaft (8) and a connecting rod shaft (9) into a whole, the main shaft (8) is positioned at the circular center of the crank wheel (10), the connecting rod shaft (9) is positioned at the edge part, close to the wheel edge, of the end surface of the crank wheel (10), and the crank wheel (10) is a gear; the synchronous gear (11) and the synchronous gear shaft (12) are welded into a whole, and the synchronous gear shaft (12) is positioned at the circular center of the synchronous gear (11); 2 crank mechanisms are arranged on a bearing frame (6) through a main shaft (8), a synchronous gear (11) is arranged on the bearing frame (6) through a synchronous gear shaft (12), the synchronous gear (11) is positioned between 2 crank wheels (10), the 2 crank wheels (10) are all meshed with the synchronous gear (11), after the 2 crank wheels (10) are meshed with the synchronous gear (11), the 2 connecting rod shafts (9) on the 2 crank wheels (10) face to the same direction, the 2 connecting rod shafts (9) are connected with a connecting rod (7), a motor output gear (15) is meshed with one crank wheel (10), a motor (14) is fixedly arranged on the bearing frame (6), the motor (14) is connected and locked with the motor output gear (15) through a motor main shaft (20), a battery (13) is fixed on the bearing frame (6), and a switch (16) is fixed on the bearing frame (6), the switch (16) is connected with the motor (14) and the battery (13) through a lead, the shell sleeve (5) is sleeved outside the bearing frame (6) and the parts arranged on the bearing frame (6), the button of the switch (16) is higher than the shell sleeve (5), one end of the connecting rod (7) extends out of the bearing frame (6) and the shell sleeve (5) for a longer section, and the sealing sleeve (19) is sleeved on the connecting rod (7) and connected to the shell sleeve (5); the connection between the bearing frame (6) and the main shaft (8) and the synchronous gear shaft (12) is similar to the relation between a shaft sleeve and a shaft, the main shaft (8) and the synchronous gear shaft (12) can rotate in the bearing frame (6), but the axial movement is limited to only a necessary small gap; the connection between the 2 connecting rod shafts (9) and the connecting rods (7) is similar to the relationship between a shaft sleeve and a shaft, the 2 connecting rod shafts (9) can rotate in the connecting rods (7), but the axial movement is limited to only a necessary tiny gap; in order to make the rotation smoother, shaft sleeves or bearings can be added between the bearing frame (6) and the main shaft (8) and the synchronous gear shaft (12) and between the 2 connecting rod shafts (9) and the connecting rods (7). The wheel diameter, the gear tooth number and the size of the 2 crank wheels (10) are all consistent, and the distances from the main shaft (8) to the connecting rod shaft (9) on the 2 crank wheels (10) are consistent. The limit is generally realized by adopting the existing technology of combining a snap ring and a groove. The shell (5) is a thin and soft rubber sleeve.

When the switch (16) is turned on, the motor (14) is connected with the battery (13) through the switch (16) and a wire to conduct a circuit, the battery (13) drives the motor (14) to rotate, the motor (13) drives the crank wheel (10) meshed and connected with the motor output gear (15) through the motor spindle (20) and the motor output gear (15), the crank wheel (10) drives the other crank wheel (10) through the synchronizing gear (11), the synchronizing gear (11) forces the 2 crank wheels (10) to rotate at the same rotating speed, the 2 connecting rod shafts (9) connected with the 2 crank wheels (10) perform the same circling action around the spindle (8), and then the 2 connecting rod shafts (9) drive the connecting rod (7) to perform the same circling action integrally, and the connecting rod (7) performs the circling action to drive the toothbrush head (2) to perform the same circling action, the toothbrush bristles on the toothbrush head perform circling action to clean the teeth. As can be seen from the above, the toothbrush head of the electric toothbrush of the present invention, which has only bristles and a toothbrush arm, has no large hygienic dead angle in the oral cavity in use and has a simple structure, and the present invention achieves the object.

In a second embodiment shown in fig. 14, a toothbrush main body (1) and a toothbrush head (2) are connected to form an electric toothbrush; in the toothbrush main machine (1), a crank body in 2 crank mechanisms is a composite crank body, the crank body is formed by connecting a crank (17) and a gear (21) through a main shaft (8), the main shaft, the crank and the gear are in a locking state, the main shaft (8) is positioned in the circular center of the gear (21), and a connecting rod shaft (9) is positioned at one end of the crank (17); the connecting rod (7) is connected with 2 connecting rod shafts (9), 2 crank mechanisms are arranged on the bearing frame (6) through a main shaft (8), a synchronous gear (11) is arranged on the bearing frame (6) through a synchronous gear shaft (12), the synchronous gear (11) is meshed with a gear (21), the motor (14) is connected with the gear (21) through a motor main shaft (20) and a motor output gear (15), the gear (21) is meshed with the motor output gear (15), a switch (16) is connected with the motor (14) and a battery (13) through wires, and the battery (13), the motor (14) and the switch (16) are fixed on the bearing frame (6). The connection between the bearing frame (6) and the main shaft (8) and the synchronous gear shaft (12) is similar to the relation between a shaft sleeve and a shaft, the main shaft (8) and the synchronous gear shaft (12) can rotate in the bearing frame (6), but the axial movement is limited to only a necessary small gap; the connection between the 2 link shafts (9) and the links (7) is also similar to the relationship between a shaft sleeve and a shaft, and the 2 link shafts (9) can rotate in the links (7), but the axial movement is limited to only a necessary small gap.

The operation of the second embodiment shown in fig. 14 is similar to that of the first embodiment described above, and can be understood with reference to the operation of the first embodiment.

In a third embodiment shown in fig. 18, a toothbrush main body (1) and a toothbrush head (2) are connected to form an electric toothbrush; in a toothbrush main machine (1), 4 crank wheels (10) are respectively connected with a connecting rod shaft (9), the connection of the crank wheels (10) and the connecting rod shaft (9) is in a locking state, 2 main shafts (8) are arranged on a bearing frame (6), 4 crank wheels (10) are respectively connected to 4 ends of the 2 main shafts (8), the connection of the 4 crank wheels (10) and the main shafts (8) is in a locking state, a connecting rod (7) is connected with the 2 connecting rod shafts (9) on the same side, a secondary connecting rod (18) is connected with the 2 connecting rod shafts (9) on the same side, a motor (14) is connected with a motor output gear (15) through a motor main shaft (20), the motor output gear (15) is in meshing connection with a gear (21), the gear (21) is in meshing connection with one crank wheel (10), the gear (21) is arranged on the bearing frame (6) through a gear central shaft (24), a battery (13), The motor (14) and the switch (16) are fixed on the carrier (6), and the switch (16) is connected with the motor (14) and the battery (13) through leads.

In the third embodiment shown in fig. 18, the synchronization mechanism is composed of a link (7) and a sub-link (18).

In a third embodiment, shown in fig. 18, in the same crank wheel (10), there is a distance between the connecting rod shaft (9) and the main shaft (8); in the crank wheels (10) on the same side connected with the 2 main shafts (8), the distances between the main shafts (8) and the connecting rod shafts (9) are equal; in a view from one end of the main shaft (8) to the other end, 2 connecting rod shafts (9) in 2 crank wheels (10) on the main shaft (8) are mutually vertical to a connecting line of the circle center of the main shaft (8).

In a third embodiment shown in fig. 18, the connection between the carrier (6) and the spindle (8) is a shaft-sleeve-like relationship, the spindle (8) being rotatable in the carrier (6), but the axial movement being limited to only the necessary slight clearance; the connection between the connecting rod (7) and the 2 connecting rod shafts (9) and the connection between the auxiliary connecting rod (18) and the 2 connecting rod shafts (9) are also similar to the relation between a shaft sleeve and a shaft, and the connecting rod shafts (9) can rotate in the connecting rod (7) and the auxiliary connecting rod (18), but the axial movement is limited to only a necessary small gap.

In the electric toothbrush of the third embodiment, when the switch (16) is turned on, the electric motor (14) is connected with the battery (13) through the switch (16) and a lead, the battery (13) drives the electric motor (14) to rotate, the electric motor (13) drives the gear (21) meshed and connected with the electric motor output gear (15) through the electric motor main shaft (20) and the electric motor output gear (15), the gear (21) drives the crank wheel (10), the crank wheel (10) drives the other three crank wheels (10) through the connecting rod shafts (9), the connecting rods (7), the main shaft (8) and the auxiliary connecting rod (18), 4 connecting rod shafts (9) rotate around the main shaft (8), at the moment, the connecting rod (7) is controlled by 2 points of the connected 2 connecting rod shafts (9), the auxiliary connecting rod (18) is also controlled by 2 points of the connected connecting rod shafts (9), and 2 points of control also exists between the connecting rod (7) and the auxiliary connecting rod (18), the connecting rod (7) and the auxiliary connecting rod (18) integrally perform the same circling action as the connecting rod shaft (9); the connecting rod (7) performs the ring-drawing action to drive the toothbrush head (2) to perform the same ring-drawing action, and the toothbrush bristles on the toothbrush head perform the ring-drawing action to clean the teeth.

In the fourth embodiment shown in fig. 22, 2 crank wheels (10) are connected via a transmission belt (26), and the motor (14) is connected in mesh with one crank wheel (10) via a motor spindle (20) and a motor output gear (15), and in the embodiment shown in fig. 22, the connection method and the operation principle of the other components are similar to the operation principle of the first embodiment, except that the 2 crank wheels (10) are connected via the transmission belt (26), and can be understood by referring to the operation principle of the first embodiment.

The drive belt (26) of the fourth embodiment can also be replaced by a chain, and only the crank wheel (10) needs to be shifted to the gear teeth matched with the chain.

Claims

1. The utility model provides an electric toothbrush, is connected to form by toothbrush head and toothbrush host computer, has the toothbrush hair in the toothbrush head, and in the toothbrush host computer, battery linked switch, switch connection motor, the power of motor is connected to the toothbrush head through drive disk assembly, makes the toothbrush head can do action by a wide margin, characterized by: the electric toothbrush is provided with a connecting rod (7) and a toothbrush head (2) which do circling motion, and is also provided with a synchronizing mechanism, a bearing frame (6) and 2 or more crank mechanisms, wherein the crank mechanisms are connected with the synchronizing mechanism, the connecting rod (7) is connected with the crank mechanisms, the crank mechanisms are connected with the power of a motor (14), the toothbrush head (2) is connected with the connecting rod (7), and the 2 or more crank mechanisms are connected with the synchronizing mechanism, namely the connection of a gear and the meshing of the gear, or the connection of the connecting rod and a connecting rod shaft, or the meshing of a chain wheel and a chain, or the meshing of a transmission belt and a belt wheel; the crank mechanism is provided with a crank body, a main shaft (8) and a connecting rod shaft (9), the crank body is a crank wheel (10) or a complex of a crank (17) and a gear (21), and a radial distance is arranged between the main shaft (8) and the connecting rod shaft (9) in the same crank body; the synchronous mechanism is a gear or a connecting rod or a chain or a transmission belt; the rotation action of the motor is converted into the circling action of a connecting rod shaft in the crank mechanism by the crank mechanism, the circling action of the connecting rod shaft is changed into the same circling action of the 2 end of the connecting rod through the connection of 2 or more crank mechanisms, the synchronizing mechanism and the connecting rod, and the connecting rod drives the toothbrush head to do the circling action, so that the toothbrush bristles on the toothbrush head also do the circling action; the toothbrush head is in a working mode of circling motion, the radial direction is the radial direction of the main shaft, and all the connecting rod shafts (9) connected with the connecting rods (7) are in the same direction and synchronously rotate.

2. The powered toothbrush as defined in claim 1, wherein: the crank body and the main shaft (8) can be in a connection mode, the connection mode is that the crank body and the main shaft (8) are connected, and the crank body and the main shaft (8) can rotate mutually.

3. The powered toothbrush as defined in claim 1, wherein: the crank body and the connecting rod shaft (9) can be in a connection mode, the connection mode is formed by connecting the crank body and the connecting rod shaft (9), and the crank body and the connecting rod shaft (9) can rotate mutually.

4. The powered toothbrush as defined in claim 1, wherein: the connecting rod (7) and the connecting rod shaft (9) can be integrated into a whole, the integration comprises the welding of the connecting rod (7) and the connecting rod shaft (9) together and also comprises a united body which is formed by connecting and locking the connecting rod (7) and the connecting rod shaft (9) together.

5. The powered toothbrush as defined in claim 1, wherein: all connecting rod shafts (9) connected with the connecting rods (7) are in the same direction, and the direction is the direction pointed by the radial line of the main shaft of the crank mechanism.