Electric toothbrush with toothbrush head replacement reminder function

Abstract

An electric toothbrush with a toothbrush head replacement reminder function includes a battery, a switch and a replacement reminder mechanism, the replacement reminder mechanism includes a ratchet, a conductive block and an indicator, one pin of the indicator is connected to the first pole of the battery, the conductive block is connected to the second pole of the battery, a switch is provided on the host, an active ratchet is provided on the switch to push the ratchet to rotate a set angle after each opening, the conductive block is set to rotate with the ratchet, and after rotating to a set position, it is connected to another pin of the indicator to form a path between the indicator and the battery, and the indicator is activated. The electric toothbrush with a toothbrush head replacement reminder function can remind the user to replace the toothbrush head through a purely mechanical counting method, reduce the design cost of electronic components, and extend the battery life.

Description

Technical Field

[0001] The invention relates to the technical field of electric toothbrushes, in particular to an electric toothbrush with a toothbrush head replacement reminder function. Background Art

[0002] With the improvement of living standards, electric toothbrushes are increasingly entering people's lives. In order to improve the user experience, a counting function for counting the number of times the electric toothbrush is used is generally set in the electric toothbrush, so that people are reminded to replace the toothbrush head after the electric toothbrush has been used for a set number of times.

[0003] In the prior art, the number of times a toothbrush is used is generally counted by an electronic counter. However, this method requires additional design of PCBA boards, circuits, and software to achieve the purpose of counting, and the cost of components is relatively high. Furthermore, it consumes the power of the battery during use, which affects the battery life. Summary of the invention

[0004] The present invention provides an electric toothbrush with a toothbrush head replacement reminder function. The electric toothbrush with the toothbrush head replacement reminder function can remind the user to replace the toothbrush head in a purely mechanical counting manner, thereby reducing the design cost of electronic components and extending the battery life.

[0005] The present invention provides an electric toothbrush with a toothbrush head replacement reminder function, comprising a battery, a switch and a replacement reminder mechanism, wherein the replacement reminder mechanism comprises a ratchet, a conductive block and an indicator, wherein one pin of the indicator is connected to a first pole of the battery, and the conductive block is connected to a second pole of the battery. The electric toothbrush with the toothbrush head replacement reminder function is provided with a switch, and an active ratchet is provided on the switch to push the ratchet to rotate a set angle after each switching on, and the conductive block is configured to rotate with the ratchet and is connected to another pin of the indicator after rotating to a set position, so that a passage is formed between the indicator and the battery, thereby starting the indicator.

[0006] Furthermore, the conductive block is wheel-shaped, and the wheel-shaped conductive block is concentrically arranged with the ratchet. A protrusion is arranged on the outer circumference of the wheel-shaped conductive block. When the wheel-shaped conductive block rotates to a set position, the protrusion is electrically connected to a pin of the indicator.

[0007] Furthermore, a torsion spring is pressed between the ratchet and the conductive block, and at least one end of the torsion spring is connected to the ratchet or the conductive block by abutting.

[0008] Furthermore, the replacement reminder mechanism includes a blocking block. When the conductive block contacts the blocking block, the blocking block blocks the conductive block from continuing to rotate, and realizes electrical connection between the conductive block and the indicator.

[0009] Furthermore, the blocking block can be movably arranged in the stationary part along the length direction of the electric toothbrush with a toothbrush head replacement reminder function, so that the blocking block forms a first position that can block the conductive block, and a second position that does not block the conductive block; when the toothbrush head is set on the electric toothbrush with a toothbrush head replacement reminder function, the toothbrush head presses the blocking block so that the blocking block is located at the first position.

[0010] Furthermore, the replacement reminder mechanism includes an elastic member, which is arranged between the blocking block and the stationary member of the electric toothbrush with a toothbrush head replacement reminder function. The elastic member stores elastic energy when the blocking block is located at the first position, and after the toothbrush head is removed, drives the blocking block to move to the second position through its own elastic energy.

[0011] Furthermore, the replacement reminder mechanism also includes a rotating shaft, which is fixed on the stationary part of the electric toothbrush with a toothbrush head replacement reminder function, the ratchet and the conductive block are rotatably arranged on the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected to the ratchet, and the other end abuts against the conductive block.

[0012] Furthermore, the electric toothbrush with the toothbrush head replacement reminder function also includes a motor, and the motor is provided with a spring sheet and a second brush sheet, the spring sheet is electrically connected between a pin of the motor and the second brush sheet, and the other pin of the motor is electrically connected to the first pole of the battery, and the switch can reciprocate along the length direction of the electric toothbrush with the toothbrush head replacement reminder function, and a first slope surface is provided on the spring sheet, and a second slope surface corresponding to the first slope surface is formed on the switch, and the setting of the first slope surface and the second slope surface enables the second slope surface to press the first slope surface when the switch is turned on, so that the second brush sheet on the spring sheet contacts the conductive block.

[0013] Furthermore, the conductive block includes a first conductive wheel and a second conductive wheel, the first conductive wheel and the second conductive wheel are fixed to each other, the first conductive wheel, the second conductive wheel and the ratchet are concentrically arranged, and a protrusion for contacting the indicator is formed on the outer circumference of the first conductive wheel. When the switch is turned on, the second brush contacts the outer circumference of the second conductive wheel.

[0014] Furthermore, the electric toothbrush with a toothbrush head replacement reminder function is also provided with a non-return pawl for preventing the ratchet from reversing.

[0015] In summary, in the present invention, by setting the ratchet and the conductive block, each time the switch is turned on, the ratchet will be pushed to rotate a set angle. Therefore, by setting the rotation angle, or the number of ratchets, the replacement reminder mechanism can make the conductive block electrically connected to the pin of the indicator after the electric toothbrush is started for a set number of times, complete the connection between the indicator and the battery, and then issue a replacement reminder. In the present invention, by setting the relevant structure of the replacement reminder mechanism, the number of times the electric toothbrush is used is counted in a purely mechanical way, and after reaching the set number of times of use, a reminder is issued through the indicator, thereby reducing the design cost of electronic components and extending the battery life. Further, by setting the blocking block and improving the connection between the ratchet and the conductive block, when the number of times the toothbrush head is used is reached but the user has not replaced the toothbrush head, the indicator can continue to issue a reminder, but it does not affect the normal use of the electric toothbrush. Further, by setting the blocking block and improving the connection between the ratchet and the conductive block, the ratchet and the conductive block can automatically enter the next counting cycle after the electric toothbrush head is replaced.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the axial structure of an electric toothbrush with a toothbrush head replacement reminder function provided by an embodiment of the present invention.

[0018] Figure 2 Shown Figure 1 A schematic diagram of the top view of an electric toothbrush with a toothbrush head replacement reminder function.

[0019] Figure 3 Shown Figure 1 A schematic diagram of the axial structure of an electric toothbrush with a toothbrush head replacement reminder function after removing the shell.

[0020] Figure 4 Shown Figure 1 A schematic diagram of the axial structure of an electric toothbrush with a toothbrush head replacement reminder function after removing the toothbrush head, shell and bracket.

[0021] Figure 5 Shown Figure 2 Schematic diagram of the cross-sectional structure along the VV direction.

[0022] Figure 6 Shown Figure 4 Schematic diagram of the axial side structure of the relevant structure after removing the ratchet.

[0023] Figure 7 Shown is the circuit connection diagram of the replacement reminder function.

[0024] Figure 8 The figure shows the shaft side structure schematic diagram after the ratchet, conductive block, elastic member and rotating shaft are combined.

[0025] Fig. 9 Shown is a schematic diagram of the exploded structure of the ratchet, conductive block, elastic member and rotating shaft.

[0026] Fig.10 Shown Figure 2 Schematic diagram of the cross-sectional structure along the XX direction.

[0027] Fig.11 Shown is a schematic diagram of the front view of the host end.

[0028] Fig.12 Shown is a schematic diagram of the circuit connection for controlling motor vibration.

[0029] Fig.13 Shown is a schematic diagram of the shaft side structure of the switch.

[0030] Figure numerals: 10. Main unit, 11. Battery, 111. First brush, 12. Motor, 121. Shrapnel, 1211. First slope, 122. Second brush, 13. Bracket, 131. Check pawl, 14. Housing, 141. Switch, 1411. Active pawl, 1412. Second slope, 142. Through hole, 20. Toothbrush head, 30. Replacement reminder mechanism, 31. Ratchet, 32. Conductive block, 321. Raised portion, 322. Mounting surface, 323. First conductive wheel, 324. Second conductive wheel, 33. Indicator, 34. Torsion spring, 35. Blocking block, 351. Elastic member, 36. Rotating shaft. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] The present invention provides an electric toothbrush with a toothbrush head replacement reminder function. The electric toothbrush with the toothbrush head replacement reminder function can remind the user to replace the toothbrush head in a purely mechanical counting manner, thereby reducing the design cost of electronic components and extending the battery life.

[0033] Figure 1FIG. 1 is a schematic diagram of the axial structure of an electric toothbrush with a toothbrush head replacement reminder function provided by an embodiment of the present invention. Figure 2 Shown Figure 1 A schematic diagram of a top view of an electric toothbrush with a toothbrush head replacement reminder function, Figure 3 Shown Figure 1 The schematic diagram of the axial structure of the electric toothbrush with a toothbrush head replacement reminder function after removing the shell. Figures 1 to 3 As shown, similar to the prior art, the electric toothbrush with a toothbrush head replacement reminder function provided in the embodiment of the present invention includes a main unit 10 and a toothbrush head 20 detachably arranged on the main unit 10. The main unit 10 is provided with a battery 11, a motor 12 and a bracket 13. The battery 11 and the motor 12 are both fixed on the bracket 13 and arranged in a housing 14. The switch 141 on the housing 14 is used to control the opening and closing of the motor 12.

[0034] Figure 4 Shown Figure 1 A schematic diagram of the axial structure of an electric toothbrush with a toothbrush head replacement reminder function after removing the toothbrush head, housing and bracket, Figure 5 Shown Figure 2 Schematic diagram of the cross-sectional structure in the VV direction. Figure 6 Shown Figure 4 Schematic diagram of the shaft side structure after removing the ratchet from the relevant structure. Figure 7 The figure shows the circuit connection diagram of the replacement reminder function. Figures 4 to 7 As shown, as an improvement of the present invention, in order to realize the replacement reminder function of the toothbrush head 20, in this embodiment, the electric toothbrush also includes a replacement reminder mechanism 30, and the replacement reminder mechanism 30 includes a ratchet 31, a conductive block 32 and an indicator 33 that can issue an indication of replacing the toothbrush head 20. One pin of the indicator 33 is directly connected to the first pole of the battery 11, such as the negative pole. The conductive block 32 is connected to the second pole of the battery 11, such as the positive pole. The conductive block 32 is arranged on the ratchet 31 to rotate with the ratchet 31. An active ratchet 1411 (see Fig.12 ), so as to push the ratchet wheel 31 to rotate to a set angle after each opening. The conductive block 32 is configured to be electrically connected to another pin of the indicator 33 after the ratchet wheel 31 rotates to a set position, so that a path is formed between the indicator 33 and the battery 11, and the indicator 33 is activated.

[0035] When brushing teeth with the electric toothbrush with the toothbrush head replacement reminder function provided by the present embodiment, the switch 141 is activated, and the active pawl 1411 on the switch 141 will push the ratchet 31 to rotate, so that the ratchet 31 rotates a set angle, such as the angle of a ratchet tooth. At this time, the conductive block 32 will also rotate an angle following the ratchet 31. Since at this time, only one pin of the indicator 33 is connected to the battery 11, and the other pin is disconnected from the battery 11, the indicator 33 will not start to issue an indication. As the number of uses increases, the ratchet 31 will rotate in one direction all the time, and the conductive block 32 will also rotate with the ratchet 31 all the time. When the conductive block 32 rotates to the set position with the ratchet 31, the conductive block 32 is electrically connected to the other pin of the indicator 33. At this time, the two pins of the indicator 33 can be connected to the two poles of the battery 11 respectively, and the indicator 33 is energized, and then an indication is issued to remind the user to replace the toothbrush head 20.

[0036] In this embodiment, since each time the switch 141 is turned on, the ratchet 31 is pushed to rotate a set angle, by setting the rotation angle, or the number of ratchets, the replacement reminder mechanism 30 can make the conductive block 32 electrically connected to the pins of the indicator 33 after the electric toothbrush is started for a set number of times, and a path is formed between the indicator 33 and the battery 11, and then a replacement reminder is issued. In this embodiment, by setting the relevant structure of the replacement reminder mechanism 30, the number of times the electric toothbrush is used is counted in a purely mechanical manner, and after the set number of uses is reached, a reminder is issued through the indicator 33, thereby reducing the design cost of electronic components and extending the battery life.

[0037] Furthermore, in this embodiment, the indicator 33 may be an indicator light, so that after both pins of the indicator 33 are electrically connected to the battery 11 , the indicator light is turned on, and then a replacement reminder is issued.

[0038] Furthermore, in this embodiment, the conductive block 32 may be wheel-shaped, the wheel-shaped conductive block 32 is concentrically arranged with the ratchet 31, and a protrusion 321 is arranged on the outer circumference of the wheel-shaped conductive block 32. When the wheel-shaped conductive block 32 is rotated to a set position, the protrusion 321 is electrically connected to one pin of the indicator 33, so that both pins of the indicator 33 are electrically connected to the battery 11.

[0039] In order to maintain the contact between the wheel-shaped conductive block 32 and the second pole of the battery 11 while the wheel-shaped conductive block 32 rotates, a first brush 111 is provided on the battery 11. One end of the first brush 111 contacts the outer circumference of the wheel-shaped conductive block 32, and the other end is connected to the second pole of the battery 11 to keep the connection between the two stable when the wheel-shaped conductive block 32 rotates.

[0040] Figure 8 The figure shows the shaft side structure schematic diagram after the ratchet, conductive block, elastic member and rotating shaft are combined. Fig. 9 The figure shows the exploded structure of the ratchet, conductive block, elastic member and rotating shaft. Fig.10 Shown Figure 2 Schematic diagram of the cross-sectional structure in the XX direction. Fig.11 The figure shows the front view of the main unit. Figures 4 to 11 In this embodiment, a torsion spring 34 is pressed between the ratchet 31 and the conductive block 32, and at least one end of the torsion spring 34 is connected to the ratchet 31 or the conductive block 32 by abutting. The provision of the torsion spring 34 enables the ratchet 31 to drive the conductive block 32 to rotate through the elastic energy stored in the torsion spring 34 and the friction between the end of the torsion spring 34 and the ratchet 31 and / or the conductive block 32.

[0041] That is, in the present embodiment, the torsion spring 34 is installed by being pressed between the ratchet 31 and the conductive block 32 and abutting against the ratchet 31 and / or the conductive block 32, so that friction can be generated between the end of the torsion spring 34 and the ratchet 31 and / or the conductive block 32. When the torsion spring 34 abuts against the ratchet 31, but the torsion spring 34 is fixedly connected to the conductive block 32, after the ratchet 31 rotates, the friction between the ratchet 31 and the torsion spring 34 will drive the torsion spring 34 to move, the torsion spring 34 will store elastic potential energy, and the torsion spring 34 will drive the conductive block 32 to rotate through its own elastic potential energy. When the torsion spring 34 abuts against the conductive block 32, but is fixedly connected to the ratchet 31, the movement of the ratchet 31 drives the torsion spring 34 to move, and the torsion spring 34 drives the conductive block 32 to rotate through its own elastic potential energy and the friction between the conductive block. When the two ends of the torsion spring 34 abut against the ratchet 31 and the conductive block 32 respectively, the ratchet 31 drives the torsion spring 34 to store elastic potential energy through friction, and the elastic potential energy of the torsion spring 34 can drive the conductive block 32 through friction. In other words, along the transmission path of the ratchet 31-torsion spring 34-conductive block 32, at least one end of the torsion spring 34 is driven downward by friction.

[0042] A blocking block 35 is also provided in the replacement reminder mechanism 30 , and the blocking block 35 is electrically connected to a pin of the indicator 33 . When the conductive block 32 contacts the blocking block 35 , the blocking block 35 blocks the conductive block 32 from continuing to rotate, and realizes the electrical connection between the conductive block 32 and the indicator 33 .

[0043] As the number of times the electric toothbrush is used increases, the conductive block 32 will contact the blocking block 35, a path will be formed between the indicator 33 and the battery 11, and the indicator 33 will give an indication. At this time, since the blocking block 35 will prevent the conductive block 32 from continuing to rotate, the conductive block 32 and the indicator 33 will always maintain an electrical connection, and the indicator 33 will always give a prompt. Further, combined with the connection relationship between the ratchet 31, the torsion spring 34 and the conductive block 32. When the switch 141 drives the ratchet 31 to rotate again, since the blocking block 35 will provide a larger resistance to the conductive block 32, the resistance will be greater than the friction between the torsion spring 34 and the ratchet 31 and / or the conductive block 32, so the torsion spring 34 and the ratchet 31 and / or the conductive block 32 will slip. The above slip will enable the ratchet 31 to rotate normally under the action of the switch 141, while the conductive block 32 will stay still due to the obstruction of the blocking block 35 and maintain an electrical connection with the indicator 33. This means that in subsequent use, if the toothbrush head is not replaced, the indicator 33 will always be in the state of giving indications, such as the indicator light is always in the normally on state, but the ratchet 31 rotates normally. Although the switch 141 will have a certain sense of resistance when it is turned on, the normal use of the toothbrush will not be affected.

[0044] Furthermore, the blocking block 35 can reciprocate along the length direction of the electric toothbrush with a toothbrush head replacement reminder function (such as Figure 4 The blocking block 35 is disposed in a stationary part of the electric toothbrush, such as a bracket 13, so that the blocking block 35 has a first position ( Figure 4 ), and a second position (compared to Figure 4 The position after the blocking block 35 moves to the left). A through hole 142 is formed at one end of the housing 14 facing the toothbrush head 20, and one end of the blocking block 35 away from the conductive block 32 extends out from the through hole 142. An elastic member 351 is arranged between the blocking block 35 and a stationary member, such as the housing 14 or the bracket 13. When the toothbrush head 20 is arranged on the housing 14, the toothbrush head 20 presses the end of the blocking block 35 extending through the through hole 142, so that the blocking block 35 is in the first position, and the elastic member 351 stores elastic energy. The setting of the elastic energy enables the blocking block 35 to move from the first position to the left to the second position when the toothbrush head 20 is separated from the main unit 10.

[0045] When the electric toothbrush has been used for many times and the conductive block 32 abuts against the blocking block 35, the indicator 33 will give an indication. If the user does not replace the toothbrush head 20, according to the above description, the indicator 33 will continue to give an indication, but the normal use function of the electric toothbrush will not be affected. When the user replaces the toothbrush head 20, due to the removal of the toothbrush head 20, the elastic member 351 on the blocking block 35 will drive the blocking block 35 to move from the first position to the second position, and the blocking block 35 will be out of contact with the conductive block 32. At the same time, due to the existence of the torsion spring 34 between the ratchet 31 and the conductive block 32, the friction between the ratchet 31, the conductive block 32 and the torsion spring 34 will drive the conductive block 32 to continue to rotate and move away from the position where the conductive block 32 contacts the blocking block 35. When a new toothbrush head 20 is installed on the main unit 10, the toothbrush head 20 will push the blocking block 35 to move to the first position again, and at this time the conductive block 32 has passed the original position where the conductive block 32 contacts the blocking block 35. The indicator 33 no longer forms a path with the storage battery 11, and the indicator 33 no longer issues an indication. The replacement reminder mechanism 30 enters the next counting cycle.

[0046] It is understandable that, when designing the product, the pressure between the ratchet 31, the conductive block 32 and the torsion spring 34 can be adjusted to adjust the elastic energy stored in the torsion spring 34 when the torsion spring 34 slips relative to the ratchet 31 and / or the conductive block 32. In this way, the elastic energy stored in the torsion spring 34 is in a suitable state, and when the blocking block 35 is out of contact with the conductive block 32, the ratchet 31 can only rotate to a suitable angle, such as the position of a ratchet tooth, to ensure that the number of times the toothbrush head is used in each counting cycle does not have a large deviation.

[0047] Please continue to refer to Figures 8 to 10 The replacement reminder mechanism 30 also includes a rotating shaft 36, which is fixed to a stationary part of the electric toothbrush, such as the bracket 13. The ratchet 31 and the conductive block 32 are rotatably disposed on the rotating shaft 36, and the torsion spring 34 is sleeved on the rotating shaft 36.

[0048] A mounting surface 322 is formed on the conductive block 32 , one end of the torsion spring 34 is fixedly connected to the ratchet 31 , and the other end abuts against the mounting surface 322 of the conductive block 32 , so that the conductive block 32 can be driven to move by the friction between the torsion spring 34 and the conductive block 32 .

[0049] Please continue to refer to Figure 5A non-return pawl 131 is also provided on the bracket 13 to prevent the ratchet 31 from moving in the reverse direction under the action of the torsion spring 34. In order to simplify the structural design, the active pawl 1411 and the non-return pawl 131 can have a certain elasticity. For example, the active pawl 1411 can be deformed in the direction of the switch 141 by its own deformation, so as to facilitate the disengagement from the ratchet 31, and at the same time, it can push the ratchet 31 to rotate when the switch 141 is turned on. When the ratchet 31 is pushed by the active pawl 1411, the non-return pawl 131 can be disengaged from the original ratchet tooth by its own deformation and enter the next ratchet tooth, and at the same time prevent the ratchet 31 from moving in the reverse direction.

[0050] It is understandable that the arrangement of the positive and negative directions of the ratchet teeth can be set according to the need of the rotation direction of the ratchet wheel 31. The number of ratchet teeth can be determined according to the service life of the toothbrush head 20.

[0051] Fig.12 The figure shows the circuit connection diagram for controlling the vibration of the motor. Fig.13 The diagram shows the shaft side structure of the switch. Figures 8 to 13 In this embodiment, the motor 12 is provided with a spring sheet 121 and a second brush sheet 122. The spring sheet 121 is electrically connected between one pin of the motor 12 and the second brush sheet 122. The other pin of the motor 12 is directly electrically connected to the first pole of the battery 11. The switch 141 is arranged on the housing 14 so as to be reciprocatingly movable along the length direction of the toothbrush. The spring sheet 121 is formed with a first slope 1211. The switch 141 is formed with a second slope 1412 opposite to the first slope 1211. The arrangement of the first slope 1211 and the second slope 1412 enables the second slope 1412 to press the first slope 1211 when the switch 141 is turned on so that the second brush sheet 122 at the end of the spring sheet 121 contacts the conductive block 32. The first brush sheet 111 is electrically connected to the second brush sheet 122 through the conductive block 32. That is, when the switch 141 is in the on state, one pin of the motor 12 is directly electrically connected to the first pole of the battery 11, and the other pin is electrically connected to the second pole of the battery 11 through the second brush 122, the conductive block 32 and the first brush 111, so that a path is formed between the motor 12 and the battery 11, and the motor 12 starts to work. In other words, through the setting of the conductive block 32, a parallel circuit is formed between the motor 12 and the indicator 33.

[0052] Furthermore, the conductive block 32 includes a first conductive wheel 323 and a second conductive wheel 324. The first conductive wheel 323 and the second conductive wheel 324 are fixed to each other and are concentrically arranged with the ratchet 31. A protrusion 321 is formed on the outer circumference of the first conductive wheel 323. When the switch 141 is turned on, the second brush 122 contacts the outer circumference of the second conductive wheel 324.

[0053] In summary, in the present invention, by setting the ratchet 31 and the conductive block 32, the ratchet 31 will be pushed to rotate a set angle each time the switch 141 is turned on. Therefore, by setting the rotation angle, or the number of ratchets, the replacement reminder mechanism 30 can make the conductive block 32 electrically connected to the pin of the indicator 33 after the electric toothbrush is started for a set number of times, complete the connection between the indicator 33 and the battery 11, and then issue a replacement reminder. In the present invention, by setting the relevant structure of the replacement reminder mechanism 30, the number of times the electric toothbrush is used is counted in a purely mechanical manner, and after reaching the set number of times of use, a reminder is issued through the indicator 33, thereby reducing the design cost of electronic components and extending the battery life. Furthermore, by setting the blocking block 35 and improving the connection between the ratchet 31 and the conductive block 32, when the number of times the toothbrush head 20 is used is reached but the user has not replaced the toothbrush head 20, the indicator 33 can continue to issue a reminder, but it does not affect the normal use of the electric toothbrush. Furthermore, by improving the setting of the blocking block 35 and the connection between the ratchet 31 and the conductive block 32, the ratchet 31 and the conductive block 32 can automatically enter the next counting cycle after the toothbrush head 20 is replaced.

[0054] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric toothbrush with a toothbrush head replacement reminder function, characterized in that: The electric toothbrush comprises a battery, a switch and a replacement reminder mechanism, wherein the replacement reminder mechanism comprises a ratchet, a conductive block and an indicator, wherein a pin of the indicator is connected to a first pole of the battery, and the conductive block is connected to a second pole of the battery. A switch is arranged on the electric toothbrush with a toothbrush head replacement reminder function, and an active ratchet is arranged on the switch to push the ratchet to rotate a set angle after each opening, and the conductive block is arranged to rotate with the ratchet and is connected to another pin of the indicator after rotating to a set position, so that a passage is formed between the indicator and the battery, and the electric toothbrush is started. The indicator is moved; a torsion spring is pressed between the ratchet and the conductive block, and at least one end of the torsion spring is connected to the ratchet or the conductive block by abutting; the replacement reminder mechanism includes a blocking block, and when the conductive block contacts the blocking block, the blocking block blocks the conductive block from continuing to rotate, and realizes the electrical connection between the conductive block and the indicator, and the blocking block provides resistance for the conductive block, which is greater than the friction between the torsion spring and the ratchet and / or the conductive block, and slippage will occur between the torsion spring and the ratchet and / or the conductive block.

2. The electric toothbrush with a toothbrush head replacement reminder function according to claim 1, characterized in that: The conductive block is wheel-shaped and is concentrically arranged with the ratchet. A protrusion is arranged on the outer circumference of the wheel-shaped conductive block. When the wheel-shaped conductive block rotates to a set position, the protrusion is electrically connected to a pin of the indicator.

3. The electric toothbrush with a toothbrush head replacement reminder function according to claim 1, characterized in that: The blocking block can be movably arranged in the stationary part along the length direction of the electric toothbrush with the toothbrush head replacement reminder function, so that the blocking block forms a first position that can block the conductive block, and a second position that does not block the conductive block; when the toothbrush head is set on the electric toothbrush with the toothbrush head replacement reminder function, the toothbrush head presses the blocking block so that the blocking block is located at the first position.

4. The electric toothbrush with a toothbrush head replacement reminder function according to claim 3, characterized in that: The replacement reminder mechanism includes an elastic member, which is arranged between the blocking block and the stationary member of the electric toothbrush with a toothbrush head replacement reminder function. The elastic member stores elastic energy when the blocking block is located at the first position, and after the toothbrush head is removed, drives the blocking block to move to the second position through its own elastic energy.

5. The electric toothbrush with a toothbrush head replacement reminder function according to claim 1, characterized in that: The replacement reminder mechanism also includes a rotating shaft, which is fixed on the stationary part of the electric toothbrush with a toothbrush head replacement reminder function. The ratchet and the conductive block are rotatably arranged on the rotating shaft. The torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the ratchet, and the other end abuts against the conductive block.

6. The electric toothbrush with a toothbrush head replacement reminder function according to claim 1, characterized in that: The electric toothbrush with the toothbrush head replacement reminder function also includes a motor, on which are arranged a spring sheet and a second brush sheet, the spring sheet is electrically connected between a pin of the motor and the second brush sheet, and the other pin of the motor is electrically connected to the first pole of the battery, the switch can reciprocate along the length direction of the electric toothbrush with the toothbrush head replacement reminder function, a first slope surface is arranged on the spring sheet, and a second slope surface corresponding to the first slope surface is formed on the switch, the first slope surface and the second slope surface are arranged so that when the switch is turned on, the second slope surface presses the first slope surface, so that the second brush sheet on the spring sheet contacts the conductive block.

7. The electric toothbrush with a toothbrush head replacement reminder function according to claim 6, characterized in that: The conductive block includes a first conductive wheel and a second conductive wheel, the first conductive wheel and the second conductive wheel are fixed to each other, the first conductive wheel, the second conductive wheel and the ratchet are concentrically arranged, a protrusion for contacting the indicator is formed on the outer circumference of the first conductive wheel, and when the switch is turned on, the second brush contacts the outer circumference of the second conductive wheel.

8. The electric toothbrush with a toothbrush head replacement reminder function according to claim 1, characterized in that: The electric toothbrush with a toothbrush head replacement reminder function is also provided with a non-return pawl for preventing the ratchet from reversing.

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