WO2022227306A1

WO2022227306A1 - High-amplitude electric toothbrush

Info

Publication number: WO2022227306A1
Application number: PCT/CN2021/108302
Authority: WO
Inventors: 姚勇
Original assignee: 东莞市上扬智造科技有限公司
Priority date: 2021-04-25
Filing date: 2021-07-24
Publication date: 2022-11-03
Also published as: CN113017893A

Abstract

The present application relates to the technical field of electric toothbrushes, and discloses a high-amplitude electric toothbrush. The key point of the technical solution is: comprising a housing, a vibration motor being fixed in the housing, the output shaft of the vibration motor passing through the housing, the output shaft of the vibration motor being provided with a toothbrush rod, a toothbrush head being provided on the toothbrush rod, and the toothbrush rod being a carbon fiber toothbrush rod. The present application solves the technical problem that the vibration amplitude of an electric toothbrush is small, and has the advantage of increasing the vibration amplitude of the electric toothbrush.

Description

High Amplitude Electric Toothbrush

technical field

The present application relates to the technical field of electric toothbrushes, and in particular, to a high-amplitude electric toothbrush.

Background technique

The electric toothbrush uses the rotation or vibration of the motor core to make the brush head generate high-frequency vibration, instantly decompose the toothpaste into fine foam, and penetrate deep into the teeth for cleaning. The vibration of the bristles can promote the blood circulation of the mouth and massage the gum tissue. Effect.

At present, electric toothbrushes are divided into rotary and vibrating types. The rotary toothbrush replaces manual cleaning of teeth through the rotation of the toothbrush head, and the vibrating toothbrush decomposes the toothpaste into fine foam through the high-frequency vibration transmitted by the motor to the brush head, and the Deeply cleans the gap between the teeth with a fine foam.

The vibrating type of toothbrush is more complex and more expensive in terms of price. Vibration-type toothbrushes have an electrically driven vibration motor inside, which can make the brush head generate high-frequency oscillations perpendicular to the direction of the brush handle.

The deficiencies in the prior art are pointed out that the vibration amplitude of the vibrating toothbrush is very small, generally about 5 mm up and down, the largest swing amplitude in the prior art is 6 mm, and the tooth cleaning ability is insufficient, so it needs to be improved.

SUMMARY OF THE INVENTION

In order to improve the vibration amplitude of the toothbrush head on the vibrating electric toothbrush, the purpose of the present application is to provide a high-amplitude electric toothbrush.

A high-amplitude electric toothbrush provided by the application adopts the following technical solutions:

A high-amplitude electric toothbrush includes a casing, a vibration motor is fixed in the casing, an output shaft of the vibration motor is passed through the casing, the end of the output shaft is located outside the casing, and the output shaft of the vibration motor is provided with a toothbrush A rod, a toothbrush head is arranged on the toothbrush rod, and the toothbrush rod is a carbon fiber toothbrush rod.

Through the above technical solutions, the motor can vibrate the toothbrush rod by means of rotation or high-frequency vibration, and at the same time, the toothbrush rod transmits the vibration to the toothbrush head, so that the toothbrush head can vibrate and clean the teeth. Since the carbon fiber material has a high elastic modulus, during the vibration process of the vibration motor, the vibration amplitude of the toothbrush rod is larger, thereby increasing the vibration sensitivity of the toothbrush rod.

Optionally, the toothbrush rod and the toothbrush head are connected by plugging.

Through the above technical solutions, the toothbrush rod and the toothbrush head can be connected or separated by means of plugging, thereby facilitating the replacement of the bristles on the toothbrush head after damage.

Optionally, an insertion rod extends from one end of the toothbrush rod close to the toothbrush head, and an insertion hole for interference fit with the plug rod is opened at one end of the toothbrush head close to the toothbrush rod.

Through the above technical solution, the connection or separation can be achieved through the interference fit between the plug-in rod and the plug-in hole, thereby facilitating the replacement of the bristles on the toothbrush head after damage.

Optionally, the diameter of the end of the plug-in rod close to the toothbrush head is smaller than the diameter of the end of the plug-in rod away from the toothbrush head.

By adopting the above technical solution, the plug-in rod can be arranged in a conical shape as a whole or in a trapezoid-shaped end, so that the alignment of the plug-in rod and the plug-in hole during connection is easier, so that the insertion of the plug-in rod is convenient. The diameter of the connecting rod is getting larger and larger, so after the connecting rod is inserted into the toothbrush head, it is convenient for the installation of the connecting rod while playing a tight connection.

Optionally, a snap joint is provided at one end of the insert rod away from the toothbrush head, a snap slot is arranged in the insert hole for matching with the snap joint, and an elastic layer is provided on the inner wall of the insert hole.

Through the above technical solution, the card joint is inserted into the elastic layer, and the elastic layer can squeeze the card joint. Due to the arrangement of the elastic layer and the card joint, the insertion rod needs more force to be separated from the insertion hole, thereby improving the speed of the toothbrush head and the toothbrush. The connection between the rods is stable, and at the same time, the elastic pad seals the gap between the insertion hole and the insertion rod, thereby reducing the stains generated during the brushing process from entering the insertion hole.

Optionally, an end of the toothbrush rod close to the toothbrush head is provided with an insertion hole, and an end of the toothbrush head close to the toothbrush rod is extended with an insertion rod that is in interference fit with the insertion hole.

Through the above technical solutions, the connection is more firm through the insertion of the insertion hole and the insertion rod. When the toothbrush head is made of plastic material, compared with carbon fiber material, the plastic material has good bending resistance, so that the connection between the toothbrush shaft and the toothbrush head is more stable and has better bending resistance.

Optionally, the diameter of the end of the plug-in rod close to the toothbrush rod is larger than the diameter of the end of the plug-in rod away from the toothbrush rod.

Through the above technical solution, the plug-in rod can be set in a conical shape as a whole or in a trapezoidal shape at the end, which facilitates the insertion of the plug-in rod during plug-in. The toothbrush shaft is then attached tightly.

Optionally, an end of the plug-in rod away from the toothbrush rod is provided with a snap joint, the plug-in hole is provided with a snap-joint slot for engaging with the clip-on joint, and an elastic layer is provided on the inner wall of the plug-in hole.

Through the above technical solution, due to the arrangement of the elastic layer and the clip joint, the clip joint is inserted into the elastic layer, the elastic layer can squeeze the clip joint, and the connection is more stable after the clip joint is inserted into the clip slot.

Optionally, the output shaft of the vibration motor and the toothbrush shaft are integrally formed.

Through the above technical solution, the output shaft and the toothbrush rod are integrally formed to reduce the production and assembly steps of the toothbrush rod, so that the high-amplitude electric toothbrush can reduce the production cost under the condition of stably increasing the amplitude.

Optionally, a sheath is sleeved on the outer peripheral surface of the toothbrush rod, and the part of the output shaft extending out of the casing is embedded in the sheath.

Through the above technical solutions, the cost of carbon fiber materials is high. In order to reduce the use of carbon fibers, the diameter of the toothbrush shaft can be reduced, and the sheath is made of low-cost materials such as plastics. The rod acts as protection, thereby reducing the risk of breakage damage.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. The material of carbon fiber has a high elastic modulus, so that after the toothbrush rod is connected to the motor, it can generate a larger amplitude and have a better cleaning effect;

2. Due to the good ductility of carbon fiber, it is inconvenient to connect the bristles with the brush head made of carbon fiber. Through the insertion of the toothbrush rod and the toothbrush head, the toothbrush rod and the toothbrush head can use different materials, and then only the toothbrush rod is selected. The carbon fiber material is used for the toothbrush head, and the plastic toothbrush head in the prior art is used, which can solve the technical obstacle that the carbon fiber is not easy to connect with the bristles.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of the application;

2 is a cross-sectional view of the first embodiment of the application;

Fig. 3 is the enlarged view of A part in Fig. 2;

4 is a cross-sectional view of the second embodiment of the application;

Fig. 5 is the enlarged view of B part in Fig. 4;

6 is a cross-sectional view of the third embodiment of the application;

Fig. 7 is the C part enlarged view in Fig. 6;

8 is a cross-sectional view of the fourth embodiment of the application;

Fig. 9 is the enlarged view of D part in Fig. 8;

10 is a cross-sectional view of Embodiment 5 of the application;

FIG. 11 is an enlarged view of part E in FIG. 10 .

Reference numerals: 1, case; 10, motor; 11, output shaft; 2, toothbrush rod; 3, toothbrush head; 4, plug-in rod; 41, snap joint; 5, elastic layer; 6, sheath.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings 1-11.

The embodiment of the present application discloses a high-amplitude electric toothbrush. Compared with a transmission electric toothbrush, the toothbrush head has a larger vibration amplitude and better overall use stability.

Example 1

1 , the high-amplitude electric toothbrush includes a casing 1 arranged in a quasi-cylindrical shape, and a toothbrush rod 2 connected to one end of the casing 1 .

2 and 3 , a motor 10 is installed in the casing 1. The motor 10 can vibrate the toothbrush bar 2 by means of rotation or high-frequency vibration. At the same time, the toothbrush bar transmits the vibration to the toothbrush head 3, so that the toothbrush head Able to vibrate to clean teeth. Specifically, the output shaft 11 of the motor 10 protrudes from one end of the casing 1 , so that the end of the output shaft 11 is located outside the casing 1 . The toothbrush rod 2 is provided with a connection hole for inserting with the output shaft 11 , and the interference fit between the output shaft 11 and the connection hole improves the connection stability between the toothbrush rod 2 and the output shaft 11 . The casing 1 may also have modules such as a battery, a charging circuit, and a control circuit, so as to make the operation of the motor 10 more stable.

In the first embodiment, the output shaft of the motor is made of steel material or carbon fiber material. The output shaft 11 of the motor 10 is conical, and the diameter of the end of the output shaft 11 of the motor 10 close to the casing 1 is larger than the diameter of the end of the output shaft 11 of the motor 10 away from the casing 1 . The connecting hole is a conical hole matched with the output shaft 11 , but the diameter of the end of the connecting hole close to the casing 1 is slightly smaller than the diameter of the end of the output shaft 11 close to the casing 1 . Although the displacement between the connection hole and the output shaft of the motor 10 may become loose with the increase of the vibration time, it is only necessary to press and fix the toothbrush rod 2 again at this time. In another embodiment, only the end of the output shaft of the motor 10 may be conical, the portion of the output shaft close to the motor 10 may be cylindrical, and the connecting hole may be a cylindrical hole.

It should be noted that the output shaft 11 of the motor 10 is usually made of wear-resistant metal material, and the toothbrush rod 2 is a carbon fiber toothbrush rod made of carbon fiber material. The hardness of the carbon fiber material is relatively high, thereby prolonging the wearing speed of the connecting holes on the toothbrush bar 2 , thereby prolonging the effective use time of a single toothbrush bar 2 . The output shaft 11 made of wear-resistant metal material has better wear resistance than carbon fiber material, thereby prolonging the effective use time of the casing 1 .

2 and 3, the toothbrush rod 2 is easily damaged when the porous position is processed on the carbon fiber material, and the toothbrush head 3 needs to be cleaned in accordance with the teeth in the oral cavity, and the teeth sometimes exert a reaction force on the toothbrush head 3, If the reaction force at this time is directly applied to the carbon fiber material, the service life of the carbon fiber material is likely to be shortened. Therefore, the toothbrush head 3 and the toothbrush shaft 2 are detachably connected by plugging, and the toothbrush head 3 is still made of plastic material with better bending resistance, instead of the integrally formed toothbrush shaft 2 and toothbrush head 3 in the prior art. In addition, the bristles on the toothbrush head 3 are consumables that are easily damaged. After the bristles are damaged, only the toothbrush head 3 needs to be disassembled and replaced, thereby prolonging the service life of the toothbrush rod.

Specifically, the end of the toothbrush rod 2 away from the casing 1 is extended with a plug-in rod 4 for connecting with the toothbrush head 3, the plug-in rod 4 is conical, and the diameter of the end of the plug-in rod 4 close to the toothbrush rod 2 is larger than that of the plug-in rod 4. The diameter of the end of the post 4 away from the toothbrush shaft 2 . Correspondingly, an end of the toothbrush head 3 close to the toothbrush rod 2 is provided with an insertion hole for interference fit with the insertion rod 4 . Although the displacement between the insertion hole and the insertion rod 4 may become loose with the increase of the vibration time, in this case, it is only necessary to press and fix the insertion rod 4 again. In another embodiment, only the end of the plug-in rod 4 may be configured in a conical shape, the part of the plug-in rod 4 close to the toothbrush rod 2 is cylindrical, and the connecting hole is provided as a cylindrical hole.

Insert the plug-in rod 4 into the plug-in hole, insert the output shaft 11 of the motor 10 into the connection hole, complete the assembly of the electric toothbrush, start the motor 10, and it can be used. Due to the interference fit between the plug-in rod 4 and the plug-in hole The connection between the plug-in rod 4 and the plug-in hole is tighter, and the plug-in operation is more convenient due to the conical arrangement of the plug-in rod 4 and the output shaft 11 .

The toothbrush bar 2 of the present application is mainly made of carbon fiber material with an elastic modulus of 200-700 Gpa. In the first embodiment, a carbon fiber toothbrush rod 2 with an elastic modulus of 480 Gpa is selected. It has been verified by a large number of tests that the amplitude of the carbon fiber toothbrush rod 2 with an elastic modulus of 480 Gpa can be increased by 30%. Through the selection of the carbon fiber toothbrush rod 2, the toothbrush head 3 can generate a larger amplitude during the vibration process of the motor 10, so that the cleaning effect of the toothbrush is better.

Embodiment 2

The difference between the second embodiment and the first embodiment is that the connection structure between the insertion rod 4 and the insertion hole is different.

4 and 5 , in the second embodiment, the plug-in rod 4 is a cylinder, and the axial direction of the plug-in rod 4 is the same as the axial direction of the toothbrush rod 3 . The end of the plug rod 4 away from the toothbrush rod 2 is provided with a clip joint 41 , the clip joint 41 is generally spherical, and the diameter of the clip joint 41 is slightly larger than that of the plug rod 4 . Correspondingly, the bottom of the insertion hole on the toothbrush head 3 is provided with a clamping groove that is engaged with the clamping joint 41 , and the inner wall of the insertion hole is covered with an elastic layer 5 . The elastic layer 5 and the plug-in rod 4 can be bonded by glue.

Embodiment 3

The difference between the third embodiment and the first embodiment lies in the connection mode between the toothbrush rod 2 and the toothbrush head 3 .

6 and 7 , the plug-in rod 4 is integrally formed on the toothbrush head 3 to replace the solution in which the plug-in rod 4 is on the toothbrush rod 2 in the first embodiment. Correspondingly, the insertion hole matched with the insertion rod 4 is located on the toothbrush rod 2 . At this time, the material of the plug rod 4 is the same as that of the toothbrush head 3, that is, the plug rod 4 is a plastic material with good bending resistance, thereby making the connection between the toothbrush rod 2 and the toothbrush head 3 more stable and resistant Better bending performance and less impact of tooth reaction on the lifespan of carbon fiber toothbrush stems.

The plug hole is opened at the end of the toothbrush rod 2 close to the toothbrush head 3, the plug rod 4 is generally conical or cylindrical, and the diameter of the end of the plug rod 4 close to the toothbrush head 3 is larger than the end of the plug rod 4 away from the toothbrush head 3 diameter, the interference fit between the plug rod 4 and the plug hole.

Embodiment 4

The difference between the fourth embodiment and the third embodiment is that the connection structure between the insertion rod 4 and the insertion hole is different.

8 and 9 , the plug-in rod 4 is a cylinder, and the axial direction of the plug-in rod 4 is the same as the axial direction of the toothbrush rod 3 . The end of the plug-in rod 4 away from the toothbrush rod 2 is provided with a clip joint 41 , the clip joint 41 is generally spherical, and the diameter of the clip joint 41 is slightly larger than that of the plug-in rod 4 . Correspondingly, the bottom of the insertion hole is provided with a clamping slot for clamping with the clamping joint 41 , the inner wall of the insertion hole is covered with an elastic layer 5 , and a connection between the elastic layer 5 and the insertion rod 4 may be provided for connection. Glue between the plug-in rod 4 and the plug-in hole.

Embodiment 5

The difference between the fifth embodiment and the first embodiment is that the output shaft 11 of the motor 10 is limited to be made of carbon fiber material, and the output shaft 11 and the insertion rod 4 are integrally formed.

Referring to FIGS. 10 and 11 , in order to reduce the cost of disassembling the rod, the use of carbon fiber material is reduced by reducing the diameter of the plug-in rod 4 in the fifth embodiment. The diameter of the plug rod 4 is substantially the same as the diameter of the output shaft 11 of the motor 10 . The outer peripheral surface of the plug-in rod 4 is provided with a sheath 6 for protecting the plug-in rod 4 , and the sheath 6 is made of plastic. The length of the plug-in rod 4 is less than the length of the sheath 6 , and the part of the output shaft 11 of the motor 10 extending out of the casing 1 needs to be embedded in the sheath 6 . There is an interference fit between the plug rod 4 and the sheath 6 , and an interference fit between the output shaft 11 and the sheath 6 .

The embodiments of this specific implementation manner are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" ” refer to directions towards or away from the geometric center of a particular part, respectively. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

A high-amplitude electric toothbrush, characterized in that it comprises a casing (1), a vibration motor (10) is fixed in the casing (1), and an output shaft (11) of the vibration motor (10) is passed through the casing (1), the end of the output shaft (11) is located outside the casing, the output shaft (11) of the vibration motor (10) is provided with a toothbrush rod (2), and the toothbrush rod (2) is provided with a toothbrush head (3) ), the toothbrush rod (2) is a carbon fiber toothbrush rod.
The high-amplitude electric toothbrush according to claim 1, characterized in that: the toothbrush rod (2) and the toothbrush head (3) are plug-connected.
The high-amplitude electric toothbrush according to claim 2, characterized in that: an end of the toothbrush rod (2) close to the toothbrush head (3) is extended with a plug-in rod (4), and the toothbrush head (3) is close to the toothbrush rod (2) One end is provided with an insertion hole for interference fit with the insertion rod (4).
The high-amplitude electric toothbrush according to claim 3, wherein the diameter of the end of the plug-in rod (4) close to the toothbrush head (3) is smaller than the diameter of the end of the plug-in rod (4) away from the toothbrush head (3) .
The high-amplitude electric toothbrush according to claim 3, characterized in that: a card joint (41) is provided at the end of the plug-in rod (4) away from the toothbrush head (3), and the plug-in hole is provided with a card connector (41). An elastic layer is provided on the inner wall of the inserting hole in the snap-fit groove in which the joint (41) is matched.
The high-amplitude electric toothbrush according to claim 2, characterized in that: an end of the toothbrush rod (2) close to the toothbrush head (3) is provided with an insertion hole, and the toothbrush head (3) is close to the toothbrush rod (2) An insertion rod (4) which is interference fit with the insertion hole is extended from one end of the socket.
The high-amplitude electric toothbrush according to claim 6, wherein the diameter of the end of the plug-in rod (4) close to the toothbrush rod (2) is larger than the diameter of the end of the plug-in rod (4) away from the toothbrush rod (2). diameter.
The high-amplitude electric toothbrush according to claim 6, characterized in that: the end of the insertion rod (4) away from the toothbrush rod (2) is provided with a clip joint (41), and the insertion hole is provided with a connection with the clip The joint (41) is matched with the clamping slot for clamping, and an elastic layer (5) is arranged on the inner wall of the insertion hole.
The high-amplitude electric toothbrush according to claim 1, wherein the output shaft (11) of the vibration motor (10) and the toothbrush shaft (2) are integrally formed.
The high-amplitude electric toothbrush according to claim 9, characterized in that: a sheath (6) is sleeved on the outer peripheral surface of the toothbrush shaft (2), and the output shaft (11) protrudes from the casing ( 1) is embedded in the sheath (6).