Universal three-axis swinging toothbrush head

Abstract

The universal three-shaft swinging toothbrush head comprises a toothbrush rod and bristles, at least two transmission shafts are arranged in the end, close to the bristles, of the toothbrush rod, the bristles are evenly distributed on each transmission shaft, one transmission shaft is provided with a transmission wheel, and the other transmission shaft is provided with a follower wheel. The transmission wheel is meshed with the follower wheel through the gear teeth, and the bristles are driven to swing in multiple directions through transmission of the gear teeth. The number of the transmission shafts is three, the transmission shafts are respectively arranged along the longitudinal direction of the toothbrush rod, and the three-shaft design can realize a more complex swinging track, so that slits between teeth and the surfaces of the teeth are more effectively cleaned. Multi-direction swinging of the bristles is achieved through a three-shaft transmission structure, the three longitudinally-arranged transmission shafts are arranged in the toothbrush rod, the main transmission shaft is meshed with the follower wheel through helical teeth or straight gears, linkage driving is formed, the multi-direction swinging bristles can more thoroughly clean slits between teeth and the surfaces of the teeth, and meanwhile abrasion to the teeth is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric toothbrushes, and in particular to a universal three-axis oscillating toothbrush head. The multi-axis transmission structure enables the bristles to oscillate in multiple directions, aiming to solve the technical problems of traditional electric toothbrushes in terms of cleaning effect and tooth wear. Background Art

[0002] Traditional electric toothbrushes are primarily categorized as rotary and vibrating. Rotary toothbrushes use a motor to drive a circular brush head, which rubs against teeth. While this provides strong cleaning power, it can easily abrade tooth surfaces and make it difficult to reach between teeth. Vibrating toothbrushes clean through high-frequency oscillation, but due to the soft bristles, the actual oscillation range is limited, resulting in insufficient cleaning power. Summary of the Invention

[0003] In view of this, in order to solve the problems existing in the technical background, the present invention proposes a universal three-axis oscillating toothbrush head. Specifically, it includes the following contents:

[0004] A universal three-axis oscillating toothbrush head includes a toothbrush rod and bristles. At least two transmission shafts are provided inside one end of the toothbrush rod close to the bristles, and bristles are evenly distributed on each transmission shaft. One of the transmission shafts is provided with a transmission wheel, and the other transmission shaft is provided with a follower wheel. The transmission wheel is engaged with the follower wheel through gear teeth, and the bristles are driven by the gear teeth to achieve multi-directional swing.

[0005] Furthermore, there are three transmission shafts, which are arranged longitudinally along the toothbrush rod. The three-axis design can achieve a more complex swing trajectory, thereby more effectively cleaning the gaps between teeth and the tooth surface.

[0006] Furthermore, the teeth of the driving wheel and the follower wheel are helical or straight teeth structures, which are used to transmit power and drive the bristles to swing.

[0007] Furthermore, the swing amplitude of the bristles is 2-6 mm to enhance the cleaning ability of the gaps between teeth.

[0008] Furthermore, the oscillation frequency of the transmission shaft is 5,000-30,000 times per minute to optimize the cleaning effect and reduce noise.

[0009] Furthermore, the bristles are made of soft and wear-resistant nylon or silicone to reduce wear on the tooth surface.

[0010] Furthermore, the transmission wheel is integrally fixed to the transmission shaft.

[0011] The above technical solution has the following beneficial effects:

[0012] The present invention realizes multi-directional swinging of the bristles through a three-axis transmission structure, wherein three longitudinally arranged transmission shafts are provided in the toothbrush rod, and the main transmission shaft is engaged with the driven wheel through helical gears or spur gears to form a linkage drive. The multi-directional swinging bristles can clean the gaps between teeth and the tooth surface more thoroughly, while reducing the wear on the teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a universal three-axis oscillating toothbrush head in Example 1 of the present invention;

[0014] Figure 2 This is a schematic cross-sectional view of a universal three-axis oscillating toothbrush head in Example 1 of the present invention. Figure 1 ;

[0015] Figure 3 This is a schematic cross-sectional view of a universal three-axis oscillating toothbrush head in Example 1 of the present invention. Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the working changes of a universal three-axis oscillating toothbrush head in Example 1 of the present invention;

[0017] Figure 5 Schematic diagram of the side cross-section structure of a toothbrush head adopting two-axis swing in embodiment 2 of the present invention;

[0018] Figure 6 Schematic diagram of the front cross-section structure of a toothbrush head adopting two-axis swing in embodiment 2 of the present invention;

[0019] Figure 7 Schematic diagram of the top cross-sectional structure of a toothbrush head adopting two-axis swing in Example 2 of the present invention;

[0020] Figure 8 Schematic diagram of the working changes of the toothbrush head adopting two-axis swing in Example 2 of the present invention;

[0021] In the figure: 1-toothbrush rod; 2-bristles; 3-transmission shaft; 4-gear teeth; 5-transmission wheel; 6-follower wheel. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] For example, see Figures 1-4The universal three-axis oscillating toothbrush head shown includes a toothbrush rod 1 and bristles 2. At least two transmission shafts 3 are provided inside the end of the toothbrush rod 1 close to the bristles 2. Bristles 2 are evenly distributed on each transmission shaft 3. One of the transmission shafts 3 is provided with a transmission wheel 5, and the other transmission shaft 3 is provided with a follower wheel 6. The transmission wheel 5 is engaged with the follower wheel 6 through gear teeth 4, and the bristles 2 are driven by the gear teeth 4 to achieve multi-directional swing. The transmission wheel 5 is integrally fixed to the transmission shaft 3.

[0024] The number of the transmission shafts 3 in this embodiment is three, which are arranged longitudinally along the toothbrush rod 1. The three-axis design can achieve a more complex swing trajectory, thereby more effectively cleaning the gaps between teeth and the tooth surface. The gear teeth 4 of the transmission wheel 5 and the follower wheel 6 are helical or straight tooth structures, which are used to transmit power and drive the bristles 2 to swing. The swing amplitude of the bristles 2 is 2-6 mm to enhance the cleaning ability of the gaps between teeth. The swing frequency of the transmission shaft 3 is 5000-30000 times / minute to optimize the cleaning effect and reduce noise. The material of the bristles 2 is soft and wear-resistant nylon or silicone to reduce wear on the tooth surface. The toothbrush head adopts a standardized interface design and can be directly adapted to the existing electric toothbrush body. Performance upgrades can be achieved without modifying the main structure, and it has both efficient cleaning and wide compatibility. The middle transmission shaft 3 used in this embodiment is connected to the existing electric toothbrush.

[0025] In this embodiment, three drive shafts 3 are located within the toothbrush shaft 1 at the end near the bristles 2. Bristles 2 are evenly distributed along each drive shaft 3. One of the drive shafts 3 serves as the main drive shaft 3, equipped with a transmission wheel 5 powered by the electric toothbrush's drive motor. The remaining drive shafts 3 are equipped with follower wheels 6, which mesh with the drive wheels 5 via gear teeth 4. When the main drive shaft 3 rotates, the gear teeth 4 of the transmission wheel 5 drive the follower wheels 6 to move synchronously, thereby synchronizing all drive shafts 3. This design allows the bristles 2 to oscillate not only in a single direction but also, through multi-axis coordination, achieve a complex oscillation trajectory, effectively expanding the cleaning coverage area.

[0026] The oscillation amplitude of bristles 2 is controlled between 2 and 6 mm, overcoming the amplitude attenuation problem of traditional vibrating toothbrushes due to their soft bristles while also avoiding the excessive friction of rotary toothbrushes. The oscillation frequency of drive shaft 3 is set between 5,000 and 30,000 times per minute. This high-frequency oscillation generates micro-flows and bubbles, deeply cleaning between teeth. The optimized frequency range also reduces noise and discomfort. Bristles 2 are made of soft, wear-resistant nylon or silicone to further minimize mechanical damage to the tooth surface.

[0027] The toothbrush head utilizes a standardized interface design, allowing the main drive shaft (3) to connect directly to the drive mechanism of existing electric toothbrushes, eliminating the need for structural modifications. This compatibility allows users to enjoy an efficient cleaning experience simply by replacing the brush head, while saving manufacturers the cost of redesigning their products. By combining multi-axis linkage, precise amplitude control, and broad adaptability, this invention significantly improves cleaning efficiency, comfort, and universality.

[0028] Example 2, see Figure 5-Figure 8 The universal three-axis oscillating toothbrush head shown includes a toothbrush rod 1 and bristles 2. Two transmission shafts 3 are provided inside the end of the toothbrush rod 1 close to the bristles 2. Bristles 2 are evenly distributed on each transmission shaft 3. One of the transmission shafts 3 is provided with a transmission wheel 5, and the other transmission shaft 3 is provided with a follower wheel 6. The transmission wheel 5 is engaged with the follower wheel 6 through gear teeth 4, and the bristles 2 are driven by the gear teeth 4 to achieve multi-directional swing.

[0029] The number of the transmission shafts 3 in this embodiment is two, which are arranged longitudinally along the toothbrush rod 1. The gear teeth 4 of the transmission wheel 5 and the follower wheel 6 are helical or straight tooth structures, which are used to transmit power and drive the bristles 2 to swing. The swing amplitude of the bristles 2 is 2-6 mm to enhance the cleaning ability of the teeth. The swing frequency of the transmission shaft 3 is 5000-30000 times / minute to optimize the cleaning effect and reduce noise. The bristles 2 are made of soft and wear-resistant nylon or silicone to reduce wear on the tooth surface. The toothbrush head adopts a standardized interface design and can be directly adapted to the existing electric toothbrush body. Performance upgrades can be achieved without modifying the main structure, and it has both efficient cleaning and wide compatibility.

[0030] The present invention utilizes a multi-axis transmission structure to achieve multi-directional oscillation of the bristles 2, significantly improving cleaning effectiveness, particularly between teeth. Furthermore, the optimized oscillation amplitude and frequency reduce wear on tooth surfaces, lower noise levels, and enhance the user experience. The standardized interface design allows the toothbrush head to be compatible with existing electric toothbrush bodies without requiring additional modification, promising broad market application prospects.

[0031] The above describes the basic principles and main features of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the invention to be protected. The scope of protection of the invention is defined by the attached claims and their equivalents.

Claims

1. A universal three-axis oscillating toothbrush head, characterized in that: The toothbrush rod and bristles are provided with at least two transmission shafts inside one end of the toothbrush rod close to the bristles, and bristles are evenly distributed on each transmission shaft. One of the transmission shafts is provided with a transmission wheel, and the other transmission shaft is provided with a follower wheel. The transmission wheel is engaged with the follower wheel through gear teeth, and the bristles are driven by the gear teeth to achieve multi-directional swing.

2. A universal three-axis oscillating toothbrush head according to claim 1, characterized in that: There are three transmission shafts, which are arranged longitudinally along the toothbrush rod. The three-axis design can achieve a more complex swing trajectory, thereby more effectively cleaning the gaps between teeth and the tooth surface.

3. A universal three-axis oscillating toothbrush head according to claim 1, characterized in that: The gear teeth of the driving wheel and the follower wheel are helical or straight gear structures, which are used to transmit power and drive the bristles to swing.

4. A universal three-axis oscillating toothbrush head according to claim 1, characterized in that: The swing amplitude of the bristles is 2-6 mm, so as to enhance the cleaning ability of the gaps between teeth.

5. The universal three-axis oscillating toothbrush head according to claim 1, characterized in that: The oscillation frequency of the transmission shaft is 5,000-30,000 times per minute to optimize the cleaning effect and reduce noise.

6. A universal three-axis oscillating toothbrush head according to claim 1, characterized in that: The bristles are made of soft, wear-resistant nylon or silicone to reduce wear on the tooth surface.

7. A universal three-axis oscillating toothbrush head according to claim 1, characterized in that: The transmission wheel is fixedly connected to the transmission shaft in an integral manner.

Images