Sound wave sweeping vibration disc brush head

Abstract

The utility model relates to the field of electric toothbrushes, in particular to a sound wave sweeping and vibrating disc brush head which comprises a handle and a brush head body, an extension connecting part is arranged at the end, close to the brush head body, of the handle, and the extension connecting part is inserted into the brush head body; the cleaning brush further comprises a sound wave sweeping and vibrating motor arranged in the handle, a sweeping and vibrating head of the sound wave sweeping and vibrating motor penetrates through the extending connecting part of the handle and then is matched with the brush head, and the brush head is directly driven to achieve oscillation-rotation left-right rotation motion. A gap compensation interference rib or an elastic body or a soft material is arranged at the position, matched with the extending connecting part of the handle, in the brush head and used for absorbing a tolerance gap between the extending connecting part of the handle and the inner wall of the brush head. The toothbrush has the advantages that the toothbrush is compact in structure, and vibration, noise and knocking sound generated by collision of the brush head and the handle due to the fact that the motor drives the gearbox are eliminated; in addition, fit clearances which may cause product failure and generate noise and are caused by frictional wear among parts of the gearbox of the electric toothbrush are eliminated, the requirement for the machining precision of the parts of the electric toothbrush is lowered, and the assembling difficulty of the electric toothbrush is lowered.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrushes, specifically a sonic vibration disc brush head. Background Technology

[0002] In the existing technology, in order to achieve the oscillating-rotating left and right rotation of the brush head, electric toothbrushes need to transmit the force driven by the motor to the brush head through a gearbox. The production and assembly of the gearbox requires highly precise parts and highly skilled assembly techniques from operators to control the tolerance gaps of the electric toothbrush. Therefore, the production efficiency and yield rate of electric toothbrushes in the existing technology are extremely low.

[0003] In existing technology, there is a sonic vibration motor that drives the toothbrush head for cleaning. This allows the brush head to rotate left and right while providing vibration frequency for a more effective cleaning, and it also eliminates vibration and noise generated by the gearbox, optimizing the user's cleaning experience. However, the main technical challenge of this invention is how to directly connect the sonic vibration motor to the cleaning brush head while ensuring that the motor is not corroded by the liquid in the brush, and also ensuring that the device is compact and easy to hold. It is worth noting that the oscillating-rotating rotation can be found in "Introducing the Oral-BiO electric toothbrush: next generation oscillating-rotating technology".

[0004] Therefore, there is an urgent need to design a brush head that uses a sweeping motor directly connected to the brush head, thereby improving the production efficiency and yield of electric toothbrushes. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sonic sweeping disc brush head to realize a compact electric toothbrush sweeping motor-driven cleaning device. It eliminates the vibration and noise generated by the motor-driven gearbox, the knocking sound caused by the collision between the brush head and the handle, and eliminates the possible product failure and noise caused by friction and wear between the various parts of the electric toothbrush gearbox. This improves the service life of the electric toothbrush and increases the production efficiency and yield rate of the electric toothbrush.

[0006] To achieve the above objectives, an acoustic sweeping disc brush head is designed, comprising a handle and a brush head. The handle has an extension connection near one end of the brush head, which is inserted into the brush head. It also includes an acoustic sweeping motor housed within the handle. The sweeping head of the acoustic sweeping motor passes through the extension connection of the handle and engages with the brush head, directly driving the brush head to achieve oscillating-rotating left-right rotational motion. The brush head has a gap-compensating interference rib, elastomer, or soft material at the engagement position with the extension connection of the handle to absorb tolerance gaps between the extension connection of the handle and the inner wall of the brush head.

[0007] Preferably, the brush head provided by this utility model also includes other technical features, wherein the handle is provided with a base, and the base is provided with an acoustic sweeping motor and a battery, and the acoustic sweeping motor and the battery are separated by a stop.

[0008] Preferably, the brush head provided by this utility model also includes other technical features, wherein the base is used to accommodate the sonic sweeping motor and has assembly guide ribs or protruding elastic bodies or soft materials on both sides, which cooperate with the base gap compensation interference ribs on the inner wall of the handle to solve the gap compensation between the sonic sweeping motor and the handle.

[0009] Preferably, the brush head provided by this utility model also includes other technical features, wherein the handle extension connection part and the handle body adopt a bevel transition for interference fit of the brush head, the bottom of the brush head has a bevel transition structure, the transition structure is connected to the handle extension connection part, and the base is provided with a sealing ring near the end of the brush head. The sealing ring adopts a stepped structure and is interference fit between the base and the handle for sealing and isolating the base and the handle.

[0010] Preferably, the brush head provided by this utility model also includes other technical features, wherein a circuit board is provided on one side of the base, and the circuit board circuit connects the acoustic sweeping motor and the battery.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] This device enables the sweeping motor to directly drive the toothbrush head to achieve oscillating-rotating left and right rotational motion, resulting in a higher brush head cleaning frequency, a more compact structure for the sweeping-driven electric toothbrush, elimination of vibration noise caused by the motor driving the gearbox, elimination of potential product failures caused by friction and wear between the various components of the electric toothbrush gearbox, and reduction of the precision requirements for the processing of electric toothbrush components. It also reduces the assembly difficulty of the electric toothbrush and improves the production efficiency and yield rate of the electric toothbrush. Attached Figure Description

[0013] Figure 1 , is a three-dimensional diagram of the device;

[0014] Figure 2 , is the front view of the device;

[0015] Figure 3 ,yes Figure 2 Sectional view of the device from plane AA;

[0016] Figure 4 ,yes Figure 2 Sectional view of the device from the BB side;

[0017] Figure 5 ,yes Figure 2 Cross-sectional view of the device from the CC plane;

[0018] Figure 6 ,yes Figure 1 A perspective 3D view with the brush head and handle hidden;

[0019] Figure 7 ,yes Figure 1 A perspective 3D view of the brush head, handle, and base is omitted;

[0020] Figure 8 ,yes Figure 1 The exploded view of the controller is hidden;

[0021] Figure 9 ,yes Figure 1 An exploded view of the rear side of the controller is hidden;

[0022] Figure 10 ,yes Figure 1 Top perspective;

[0023] In the diagram: 1. Brush head, 2. Sealing ring, 3. Motor, 4. Stop, 5. Battery, 6. Charging base, 7. PCB board, 8. Handle, 9. Base, 10. Back cover, 12. Extension connection, 13. Gap compensation interference rib, 14. Vibration head, 15. Decorative ring, 16. Base gap compensation interference rib, 17. Assembly guide rib. Detailed Implementation

[0024] To make the purpose, principle and structure of this utility model clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] Example 1:

[0026] See Figures 1 to 10 This embodiment provides an acoustic sweeping disc brush head, comprising:

[0027] Brush head 1, the top of which includes a plurality of bristles.

[0028] The handle 8, located below the brush head 1, has an extension connecting part 12 at one end near the brush head 1. The extension connecting part 12 is inserted into the internal cavity of the brush head 1, and the shape of the internal cavity of the brush head 1 matches the extension connecting part 12. There is a slight fit gap between the brush head 1 and the handle extension connecting part 12. However, under long-term high-frequency vibration, this fit gap can lead to a lack of tightness in the fit of the parts, resulting in failure of the fit. Therefore, in this embodiment, a gap compensation interference rib 13 can be provided between the brush head 1 and the handle extension connecting part 12 to eliminate the fit gap between the parts. The compensation interference rib 13 is a reinforcing rib provided on the outside of the brush head 1 or the extension connection 12. By adding the reinforcing rib, the deformation range on the circumferential surface can be reduced. The extension connection 12 and the brush head 1 cavity are connected by an interference fit. The interference fit depends on the extension connection 12 squeezing the material of the brush head 1 and producing slight extrusion deformation. By adding the reinforcing rib, a part of the originally uniform material can produce a change in the material deformation coefficient, which forms an effect similar to applying an additional pressure, thereby eliminating the squeezing of the fit gap.

[0029] An acoustic sweeping motor 3 is installed inside the handle 8. The sweeping head 14 of the motor 3 passes through the extension connection 12 of the handle and cooperates with the brush head 1 to directly drive the brush head 1 to generate sweeping motion and simultaneously achieve oscillating-rotating left and right rotational motion. The sweeping head 14 is a columnar structure with several steps in the vertical direction, and the kick surface of the step structure is an inclined surface. An interference fit connection is achieved through the compression between the inclined structure of the step structure kick surface and the inner cavity of the brush head 1, and the driving force of the motor 3 can be transmitted to the brush head 1.

[0030] A base 9 is disposed within the handle 8. The base 9 contains a cavity; the upper half of the cavity houses the sonic sweeping motor 3, and the lower half houses the battery 5. The top of the cavity matches the top structure of the motor 3. A stop 4 is provided in the middle of the base 9, which locks and limits the bottom of the motor 3, thus limiting the motor 3 within the base 9. An opening is also provided at the top of the base 9, through which the sweeping head 14 of the motor 3 passes and connects to the brush head 1.

[0031] The bottom of battery 5 is equipped with a charging base 6.

[0032] A circuit board 7 is also provided on the front side of the base 9. The front side refers to the direction in which the brush head 1 is pointing. A button is provided on the same side of the handle 8. The circuit board 7 is connected to the sonic sweeping motor 3 and the battery 5. The circuit board 7 can be controlled by the button to issue commands to control various electronic components.

[0033] The base 9 is provided with vertically arranged assembly guide ribs 17 on both sides. The inner wall of the handle 8 is provided with a number of base gap compensation interference ribs 16 at corresponding positions. The base gap compensation interference ribs 16 form a groove in the middle that cooperates with the assembly guide ribs 17. The base gap compensation interference ribs 16 and the assembly guide ribs 17 are fitted together, thereby further realizing the fixed connection between the base 9 and the handle 8 and eliminating the fitting gap.

[0034] The handle extension connection 12 is fixedly connected to the handle 8 body and is an integrally formed component used for interference fit with the brush head 1. A sealing ring 2 is provided at one end of the base 9 near the brush head 1. The bottom of the brush head 1 and the handle extension connection 12 also have a beveled transition structure that mates with the handle extension connection 12. A decorative ring 15 is provided at the bottom of the brush head 1. The sealing ring 2 has a stepped structure and is interference-fitted with the base 9 and the handle 8, ensuring relative sealing and isolation between the base 9 and the handle 8. An opening is provided at the top of the sealing ring 2, through which the vibrating head 14 passes and mates with the brush head 1. The sealing ring 2 is made of flexible material, and the vibrating head 14 and the sealing ring 2 are interference-fitted, achieving sealing and isolation between the upper part of the vibrating head 14 and the motor 3.

[0035] A rear cover 10 is also provided below the handle 8. Several protrusions are arranged horizontally along the circumference at the bottom inner side of the handle 8. Several grooves are correspondingly provided at the upper end of the rear cover 10. The grooves and protrusions can be fitted together by rotation. The bottom of the rear cover 10 has a base plate with the same diameter as the bottom of the handle 8. A cavity is provided at the upper part of the rear cover 10, and a charging base 6 is installed within the cavity. The charging base 6 is connected to the battery 5 and forms a limiting and supporting structure.

[0036] Example 2:

[0037] In this embodiment, it is preferable to replace the gap compensation interference rib 13 in Embodiment 1 with an elastomer or soft material to fill the mating gap.

[0038] Example 3:

[0039] In this embodiment, it is preferable to add a protruding elastomer or soft material to the assembly guide rib 17 in Embodiment 1 to compensate for the gap between the inner side of the handle 8 and the base, so as to replace the base gap compensation interference rib 16 to form a connection and eliminate the fitting gap.

[0040] Example 4:

[0041] In this embodiment, preferably, the motor 3, circuit board 7 and battery 5 in the base 9 described in Embodiment 1 can be distributed in the base 9 in a separate or integrated manner.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and novel concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A sonic sweeping disc brush head, comprising a handle and a brush head, characterized in that, The handle has an extension connection part near the brush head, and the extension connection part is inserted into the brush head. Also includes The sonic sweeping motor is installed inside the handle. The sweeping head of the sonic sweeping motor passes through the extension connection of the handle and cooperates with the brush head, directly driving the brush head to achieve oscillating-rotating left and right rotational motion. The brush head is provided with a gap compensation rib, elastomer, or soft material at the position where it mates with the handle extension connection, in order to absorb the tolerance gap between the handle extension connection and the inner wall of the brush head.

2. The acoustic sweeping disc brush head as described in claim 1, characterized in that, The handle has a base, on which a sonic sweep motor and a battery are mounted, and the sonic sweep motor and the battery are separated by a stop.

3. The acoustic wave sweeping disc brush head as described in claim 2, characterized in that, The base is used to accommodate the acoustic sweep motor. The two sides are provided with assembly guide ribs or protruding elastic bodies or soft materials, which cooperate with the base gap compensation interference ribs on the inner wall of the handle to solve the gap compensation between the acoustic sweep motor and the handle.

4. A sonic sweeping disc brush head as described in claim 2 or 3, characterized in that, The extension connection of the handle and the handle body are connected by a beveled transition for interference fit of the brush head. The bottom of the brush head has a beveled transition structure, which is connected to the extension connection of the handle. The base is provided with a sealing ring near the brush head. The sealing ring has a stepped structure and is interference fit between the base and the handle to seal and isolate the base and the handle.

5. A sonic sweeping disc brush head as described in claim 2 or 3, characterized in that, A circuit board is provided on one side of the base, and the circuit board circuit connects the acoustic sweep motor and the battery.

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