A pressure control device for an electric toothbrush
By introducing a pressure transmission device and a touch switch into the electric toothbrush, the tooth pressure is sensed and the motor speed is automatically adjusted, which solves the problem of toothbrush damage when the compression force is too large, and achieves safety improvement and user reminders.
Patent Information
- Application Number
- CN201810106222.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-02-02
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2038-02-02
AI Technical Summary
Existing electric acoustic toothbrushes are prone to damage teeth when the compression force is too large, especially for children's teeth, and pressure control is needed to improve.
A pressure control device for an electric toothbrush is designed to sense the pressure on the teeth through the pressure transfer device. When the preset value is reached, the trigger switch is turned on. The controller automatically reduces the motor speed, weakens the sound wave vibration of the bristles, and avoids damage.
Effectively adjust the vibration frequency of the electric toothbrush, avoid tooth damage, improve safety of use, and remind users to adjust their strength through prompts.
Smart Images
Figure CN108056833B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric toothbrushes, in particular to a pressure control device for an electric toothbrush. Background Art
[0002] Toothbrushes are the most commonly used tooth cleaning tools for people. They are used to remove bacteria, plaque and small debris attached to the teeth. They can prevent periodontal diseases and protect people's oral hygiene and dental health. Currently, there is a sonic vibration toothbrush that drives the brush head to vibrate through a motor, which has a cleaning and massage effect on the gums. For example, the sonic electric toothbrush vibration structure mentioned in Chinese Patent Publication No. CN102715964 includes a brush body, a micro motor that can generate vibration output and a transmission rod that can transmit the vibration to the toothbrush head body, wherein the transmission rod head is fixedly connected to the toothbrush head body, and the transmission rod tail is separated from the brush body, the transmission rod head and the tail are connected by a flexible rib with a shock-absorbing function, and the micro motor is fixed in the inner cavity of the transmission rod head; the micro motor drives the transmission rod head to generate high-frequency vibration, and the flexible rib isolates the high-frequency vibration from the tail of the transmission rod, effectively slowing down the vibration of the electric toothbrush handle, enhancing the swing amplitude of the brush head, and making the user more comfortable in use. When a user uses a toothbrush, the brush head needs to be in close contact with the tooth surface. When the user presses the toothbrush hard, the excessive pressure combined with the friction of the high-frequency sonic vibrations of the bristles can cause damage to the teeth. This is especially true for children during their growing teeth. Therefore, existing electric sonic toothbrushes need to improve the control of the pressure to protect teeth. Summary of the Invention
[0003] The purpose of the present invention is to provide a pressure control device for an electric toothbrush. When the pressure of the electric toothbrush on the teeth is too great, the motor speed of the electric toothbrush can be automatically reduced to reduce the sonic vibration and friction of the bristles to avoid damage to the teeth. This can protect the teeth and improve the safety of the electric toothbrush when in use.
[0004] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a pressure control device for an electric toothbrush, a touch switch, having an on and off state;
[0005] a controller, the input end of which is connected to the touch switch, and the output end of which is connected to the motor of the electric toothbrush; and when the touch switch is in the on state, the controller controls the motor to reduce the speed, and when the touch switch is in the off state, the controller controls the motor to adjust to the original speed;
[0006] A pressure transmission device is installed on the motor and is correspondingly arranged with the touch switch. When the pressure transmitted by the toothbrush head of the electric toothbrush to the pressure transmission device reaches a preset value, the pressure transmission device touches the touch switch to make it conductive.
[0007] For the pressure control device of the electric toothbrush of the present invention, the pressure of the electric toothbrush on the teeth is transmitted through the pressure transmission device. When the pressure of the electric toothbrush on the teeth is too large, the pressure transmission device will make the touch switch conductive, and the controller will automatically reduce the rotation speed of the motor of the electric toothbrush, weakening the sonic vibration friction of the bristles, so as to avoid damage to the teeth, protect the teeth, and improve the safety when using the electric toothbrush.
[0008] According to the above solution, the controller is installed on the control board, and a start switch for controlling the motor is provided on the control board, and the start switch is connected to the controller. Installing the controller and the start switch through the control board can reduce the space occupied by the electrical structure, and at the same time, the start switch can facilitate the user to control the damage of the electric toothbrush.
[0009] According to the above solution, the touch switch is installed on the control board. Integrating the touch switch onto the control board can further reduce the space occupied by the electrical structure and improve the stability of the electrical connection.
[0010] According to the above solution, the pressure transmission device is connected to the tail end of the motor, which can not only stably and accurately transmit the pressure of the electric toothbrush on the teeth to the pressure transmission device, but also facilitate the installation and fixation of the pressure transmission device, reducing the space occupied inside the electric toothbrush.
[0011] According to the above solution, the pressure transmission device includes an elastic rubber ring, and the elastic rubber ring is sleeved on the tail end of the motor; the elastic rubber ring is correspondingly arranged with the contact point of the touch switch. Transmitting the pressure of the electric toothbrush on the teeth through the elastic rubber ring can not only accurately control the touch switch to be conductive when the pressure is too large, but also automatically reset when the pressure decreases, making the touch switch return to the off state.
[0012] According to the above solution, the pressure transmission device further includes a mounting bracket located inside the housing of the electric toothbrush for fixedly installing the motor, and the elastic rubber ring is sleeved on the end of the mounting bracket. Installing the elastic rubber ring on the end of the mounting bracket for fixing the motor enables the pressure of the electric toothbrush on the teeth to be transmitted to the elastic rubber ring through the mounting bracket in the reverse direction, which can further improve the accuracy of pressure transmission.
[0013] According to the above solution, the mounting bracket includes a front bracket and a rear bracket. The front bracket is sleeved on the front end of the motor, the rear bracket is sleeved on the rear end of the motor, and the elastic rubber ring is sleeved on the tail end of the rear bracket; the connection between the front bracket and the rear bracket is the fulcrum of the pressure transmission device. The mounting bracket adopts a structure combining the front and rear brackets, which makes it convenient to install and assemble the motor. At the same time, the front and rear combined bracket structure can reversely transmit the pressure at the front end of the electric toothbrush to the rear end of the motor through the fulcrum, making the pressure transmission more accurate and effective.
[0014] According to the above solution, a reset rubber ring is sleeved on the front end of the front bracket, and the outer surface of the reset rubber ring contacts the inner surface of the housing. When the pressure of the electric toothbrush on the teeth is too large, slight deformation will occur between the front and rear brackets. When the pressure decreases, the front bracket can be reset simultaneously through the reset rubber ring to maintain structural stability.
[0015] According to the above solution, a reminder is also connected to the controller. When the touch switch is in the on state, the controller controls the reminder to give a reminder. When the touch switch is in the off state, the controller controls the reminder not to give a reminder. When the pressure of the electric toothbrush on the teeth is too large, the user can be reminded to reduce the pressure through the reminder, which can further reduce the risk of damage to the teeth caused by the electric toothbrush.
[0016] According to the above solution, the reminder includes an LED warning light and / or a sound warning device. Adopting a reminder method using one of the sound and light, or both, makes it easier for users to obtain reminders.
[0017] For the pressure control device of the electric toothbrush of the present invention, when the user holds the electric toothbrush for oral cleaning, the user will apply force to press the brush head of the electric toothbrush tightly against the teeth. This pressure will be reversely transmitted through the electric toothbrush to the pressure transmission device, causing the pressure transmission device to gradually move towards the touch switch. When this pressure reaches a predetermined pressure magnitude, the pressure transmission device will contact the touch switch, making the touch switch conductive. In this way, the controller will receive an electrical signal and automatically control the motor to reduce the speed, avoiding damage to the teeth caused by the high-frequency sonic vibration and friction of the bristles. When the pressure of the electric toothbrush on the teeth decreases, the pressure transmission device will gradually separate from the touch switch. In this way, the controller will control the motor to return to the original speed and continue to clean the oral cavity. Therefore, the pressure control device of the electric toothbrush of the present invention can adjust the vibration frequency according to the pressure of the electric toothbrush on the teeth, avoid damage to the teeth, protect the teeth, and improve the safety during the use of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a partial structural schematic diagram of the present invention;
[0019] Figure 2 Yes Figure 1 is a partial enlarged view in
[0020] In the figure: 1. Touch switch; 2. Controller; 3. Pressure transmission device; 4. Control board; 5. Start switch; 6. Elastic rubber ring; 7. Brush head; 8. Motor; 9. Mounting bracket; 10. Front bracket; 11. Rear bracket; 12. Reset rubber ring. Specific implementation mode
[0021] The technical solution of the present invention will be described below in conjunction with the drawings and embodiments.
[0022] As Figure 1 and Figure 2 shown, a pressure control device for an electric toothbrush according to the present invention includes a touch switch 1, which has two states: conduction and disconnection; a controller 2, whose input end is connected to the touch switch 1 and the output end is connected to the motor 8 of the electric toothbrush; and when the touch switch 1 is in the conduction state, the controller 2 controls the motor 8 to reduce the rotational speed, and when the touch switch 1 is in the disconnection state, the controller 2 controls the motor 8 to adjust to the original rotational speed; a pressure transmission device 3, which is installed on the motor 8 and is arranged corresponding to the touch switch 1, and when the pressure transmitted to the pressure transmission device 3 by the brush head 7 of the electric toothbrush reaches a preset value, the pressure transmission device 3 touches the touch switch 1 to make it conductive. For the pressure control device of the electric toothbrush of the present invention, when the user holds the electric toothbrush for oral cleaning, the user will apply force to press the brush head 7 of the electric toothbrush against the teeth, and this pressure will be transmitted reversely through the electric toothbrush to the pressure transmission device 3, causing the pressure transmission device 3 to gradually move towards the touch switch 1. When this pressure reaches a predetermined pressure magnitude, the pressure transmission device 3 will contact the touch switch 1, making the touch switch 1 conductive. In this way, the controller 2 will receive an electrical signal and automatically control the motor 8 to reduce the rotational speed, avoiding damage to the teeth caused by the high-frequency sonic vibration friction of the bristles. When the pressure of the electric toothbrush on the teeth decreases, the pressure transmission device 3 will gradually separate from the touch switch 1. In this way, the controller 2 will control the motor 8 to return to the original rotational speed and continue to clean the oral cavity. Therefore, the pressure control device of the electric toothbrush of the present invention can adjust the vibration frequency according to the pressure magnitude of the electric toothbrush on the teeth, avoid damage to the teeth, play a protective role for the teeth, and improve the safety during the use of the electric toothbrush.
[0023] As Figure 1As shown, the controller 2 is installed on the control board 4. The control board 4 is provided with a start switch 5 for controlling the motor 8, and the start switch 5 is connected to the controller 2. Installing the controller 2 and the start switch 5 on the control board 4 can reduce the space occupied by the electrical structure. At the same time, the start switch 5 can facilitate the user to control the damage of the electric toothbrush. The touch switch 1 is installed on the control board 4. Integrating the touch switch 1 onto the control board 4 can further reduce the space occupied by the electrical structure and improve the stability of the electrical connection.
[0024] As Figure 2 shown, the pressure transmission device 3 is connected to the tail end of the motor 8. It can stably transmit the pressure of the electric toothbrush on the teeth to the pressure transmission device 3 accurately. At the same time, it is also convenient for the installation and fixation of the pressure transmission device 3, reducing the space occupied inside the electric toothbrush. Specifically, the pressure transmission device 3 includes an elastic rubber ring 6, and the elastic rubber ring 6 is sleeved on the tail end of the motor 8; the elastic rubber ring 6 is arranged corresponding to the contact point of the touch switch 1. Transmitting the pressure of the electric toothbrush on the teeth through the elastic rubber ring 6 can accurately control the touch switch 1 to conduct when the pressure is too high, and at the same time can automatically reset when the pressure decreases, making the touch switch 1 return to the off state. Further, the pressure transmission device 3 further includes a mounting bracket 9, which is located inside the housing of the electric toothbrush and is used for fixedly installing the motor 8. The elastic rubber ring 6 is sleeved on the end of the mounting bracket 9. Installing the elastic rubber ring 6 on the end of the mounting bracket 9 for fixing the motor 8 enables the pressure of the electric toothbrush on the teeth to be transmitted to the elastic rubber ring 6 through the mounting bracket 9 in reverse, which can further improve the accuracy of pressure transmission. Specifically, the mounting bracket 9 includes a front bracket 10 and a rear bracket 11. The front bracket 10 is sleeved on the front end of the motor 8, the rear bracket 11 is sleeved on the rear end of the motor 8, and the elastic rubber ring 6 is sleeved on the tail end of the rear bracket 11; the connection point between the front bracket 10 and the rear bracket 11 is the fulcrum of the pressure transmission device 3. The mounting bracket 9 adopts a structure combining the front and rear brackets, which enables the motor 8 to be conveniently installed and assembled. At the same time, adopting the front and rear combined bracket structure can transmit the pressure at the front end of the electric toothbrush to the rear end of the motor 8 in reverse through the fulcrum, making the pressure transmission more accurate and effective. In addition, a reset rubber ring 12 is sleeved on the front end of the front bracket 10, and the outer surface of the reset rubber ring 12 contacts the inner surface of the housing. When the pressure of the electric toothbrush on the teeth is too high, slight deformation will occur between the front and rear brackets. When the pressure decreases, through the reset rubber ring 12, the front bracket 10 can also be reset simultaneously to maintain the structural stability.
[0025] Meanwhile, a prompt device is also connected to the controller 2. When the touch switch 1 is in the on state, the controller 2 controls the prompt device to give a prompt. When the touch switch 1 is in the off state, the controller 2 controls the prompt device not to give a prompt. When the pressure of the electric toothbrush on the teeth is too large, the user can be reminded to reduce the pressure through the prompt device, which can further reduce the risk of damage to the teeth caused by the electric toothbrush. Specifically, the prompt device includes an LED warning light and / or a sound warning device. By using one of the sound and light, or both for the prompt method, it is easier for the user to obtain the reminder.
[0026] When the user uses the electric toothbrush to clean the oral cavity, since the user needs to press the brush head 7 of the electric toothbrush against the tooth surface forcefully, so that the bristles of the brush head 7 contact the teeth, and the bristles can clean the teeth. However, some users may unconsciously apply too much force, resulting in a relatively large pressure of the electric toothbrush on the teeth. When the electric toothbrush is working, its high-frequency sound wave vibration friction plus the excessive pressure will cause damage to the teeth. After the present invention is applied to the electric toothbrush, when using the electric toothbrush to clean the oral cavity, the pressure of the electric toothbrush on the teeth will be transmitted reversely through the brush head 7 to the front bracket 10 and the rear bracket 11. Under the fulcrum support at the connection of the front bracket 10 and the rear bracket 11, this end pressure will cause the front bracket 10 and the rear bracket 11 to bend and deform relatively. Then the rear bracket 11 will bring the elastic rubber ring 6 closer to the touch switch 1. When the pressure applied by the user to the electric toothbrush reaches the predetermined pressure magnitude designed by the structure, the relative bending deformation between the front bracket 10 and the rear bracket 11 will make the elastic rubber ring 6 contact the touch switch 1, so that the touch switch 1 will be turned on. After the touch switch 1 is turned on, the controller 2 receives the electrical signal and will automatically control the motor 8 to reduce the speed, so as to avoid damage to the teeth under the combination of high-frequency vibration and large pressure. At the same time, the controller 2 will also make the prompt device emit sound or light flash to prompt the user to reduce the force. After the user reduces the force, under the elastic action of the elastic rubber ring 6 and the reset rubber ring 12, the relative bending between the front bracket 10 and the rear bracket 11 will automatically return to the original state, and the elastic rubber ring 6 will also separate from the touch switch 1, making the touch switch 1 in the off state. At this time, the controller 2 no longer receives the electrical signal of the touch switch 1 and will control the motor 8 to resume the original speed and continue to normally clean the oral cavity and teeth. The pressure control device of the electric toothbrush of the present invention transmits the pressure of the electric toothbrush on the teeth through the pressure transmission device 3. When the pressure of the electric toothbrush on the teeth is too large, the pressure transmission device 3 will turn on the touch switch 1, and the controller 2 will automatically reduce the speed of the motor 8 of the electric toothbrush and weaken the sonic vibration friction of the bristles to avoid damage to the teeth, which can play a protective role for the teeth and improve the safety when using the electric toothbrush.
[0027] The above are only the preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features and principles described in the scope of this invention patent application are included in the scope of this invention patent application.
Claims
1. A pressure control device for an electric toothbrush, characterized in that: include: A touch switch with on and off states; A controller, the input end of which is connected to the touch switch, and the output end of which is connected to the motor of the electric toothbrush; When the touch switch is in the on state, the controller controls the motor to reduce the speed; when the touch switch is in the off state, the controller controls the motor to adjust to the original speed; A pressure transmission device is installed on the motor and is arranged corresponding to the touch switch. When the pressure transmitted from the brush head of the electric toothbrush to the pressure transmission device reaches a preset value, the pressure transmission device triggers the touch switch to turn it on.
2. The pressure control device of the electric toothbrush according to claim 1, characterized in that: The controller is installed on a control panel. A start switch for controlling the motor is provided on the control panel. The start switch is connected to the controller.
3. The pressure control device of the electric toothbrush according to claim 2, characterized in that: The touch switch is installed on the control panel.
4. The pressure control device of the electric toothbrush according to claim 1, characterized in that The pressure transmission device is connected to the tail end of the motor.
5. The pressure control device of the electric toothbrush according to claim 4, characterized in that: The pressure transmission device includes an elastic rubber ring, which is sleeved on the tail end of the motor; the elastic rubber ring is arranged corresponding to the contact point of the touch switch.
6. The pressure control device of the electric toothbrush according to claim 5, characterized in that: The pressure transmission device also includes a mounting bracket located inside the housing of the electric toothbrush and used for fixing the motor, and the elastic rubber ring is sleeved on the end of the mounting bracket.
7. The pressure control device of the electric toothbrush according to claim 6, characterized in that: The mounting frame includes a front bracket and a rear bracket, the front bracket is sleeved on the front end of the motor, the rear bracket is sleeved on the rear end of the motor, and the elastic rubber ring is sleeved on the tail end of the rear bracket; the connection between the front bracket and the rear bracket is the fulcrum of the pressure transmission device.
8. The pressure control device of the electric toothbrush according to claim 7, characterized in that: A reset rubber ring is sleeved on the front end of the front bracket, and the outer surface of the reset rubber ring contacts the inner surface of the shell.
9. The pressure control device of the electric toothbrush according to claim 1, characterized in that: The controller is also connected to a prompter. When the touch switch is in the on state, the controller controls the prompter to give a prompt. When the touch switch is in the off state, the controller controls the prompter not to give a prompt.
10. The pressure control device of the electric toothbrush according to claim 9, characterized in that: The prompter includes an LED warning light and / or a sound warning device.