Electric toothbrush head and electric toothbrush

Abstract

The utility model discloses an electric toothbrush head and an electric toothbrush, and the electric toothbrush head comprises a brush handle connecting part which is in power connection with a brush handle of the electric toothbrush; the extension part extends upwards from the top end of the brush handle; the flexible glue part wraps the extension part, an opening is formed in the rear surface of the flexible glue part, and at least one part of the extension part is exposed out of the rear surface of the opening from the opening; the bristle part comprises a plurality of bristle planting rings fixedly arranged on the soft rubber, at least part of the bristle planting rings are located outside the projection of the extension part in the front-back direction, and the other part of the bristle planting rings are located inside the projection of the extension part in the front-back direction. The binding force between the soft rubber and the brush head is improved through the extending part exposed out of the soft rubber, so that the soft rubber can be relatively stably kept on the brush head. When the movable bristle planting rings are connected with each other, the exposed extension parts can keep the soft rubber not to generate excessive deformation during use, so that the positions of the soft rubber and the bristle planting rings are stabilized, and the soft rubber and the bristle planting rings are prevented from being loosened or separated from the brush head.

Description

Technical Field

[0001] This patent belongs to the field of electric toothbrush technology, specifically relating to an electric toothbrush head and an electric toothbrush. Background Technology

[0002] Electric toothbrushes are widely used in current technology, and are popular among users because they use a motor as a drive source, which allows for convenient and efficient cleaning of teeth. However, because electric toothbrushes use a motor as a power source, the brushing force and frequency cannot be the same as manual brushing. This often results in the brush head hitting the teeth, causing inconvenience to the user. Therefore, existing technology has developed flexible brush heads that use soft rubber material as the bristle implantation enclosure. While this type of brush head is indeed more user-friendly, it also presents challenges to durability and other performance aspects. The main reason is that if bristles are implanted in soft rubber, the soft rubber itself does not have a strong deformation retention capacity, so the bonding strength between the bristles and the brush head may be insufficient, and the bristles may not achieve the required pull-out force. Summary of the Invention

[0003] This application is made based on the aforementioned needs of the prior art. The technical problem to be solved by this patent is to provide a toothbrush head for an electric toothbrush that provides a high degree of bristle-to-brush head bonding force in a soft brush head.

[0004] To address the aforementioned problems, the technical solution provided in this application includes:

[0005] An electric toothbrush head, characterized in that it comprises: a handle connecting portion for power connection with the handle of an electric toothbrush; an extension portion extending upward from the top of the handle; a soft rubber portion covering the extension portion, the soft rubber portion having an opening on its rear surface, at least a portion of the extension portion protruding from the opening beyond the rear surface of the opening; and a bristle portion including a plurality of bristle rings fixedly disposed on the soft rubber portion, wherein at least a portion of the bristle rings are located outside the front-rear projection of the extension portion, and another portion of the bristle rings are located inside the front-rear projection of the extension portion.

[0006] Preferably, the hair implantation ring includes a peripheral hair implantation ring and a central hair implantation ring; the peripheral hair implantation ring has multiple hair implantation ring units, at least some of which are connected together by a connecting strip and are located outside the front-back projection of the extension; the central hair implantation ring has multiple hair implantation holes, and the central hair implantation ring is at least partially located within the front-back projection of the extension.

[0007] Preferably, the bristle ring opening is arranged in the front-to-back direction, the lower end of the bristles is fused to the lower surface of the bristle ring to form a fixing head, and the front end of the bristles extends through the bristle ring and protrudes outside the soft rubber.

[0008] Preferably, the extension includes: a neck disposed at the upper end of the brush handle connector, the diameter of the neck being smaller than the diameter of the brush handle connector, and the neck being completely covered by the soft rubber; and a bristle support disposed at the upper end of the neck, the rear end of the bristle support protruding from the opening beyond the rear surface of the opening.

[0009] Preferably, the front surface of the bristle carrier is formed as a flat platform shape, with a multi-level shape whose size gradually decreases from the platform to the rear.

[0010] Preferably, the longitudinal axis of the bristle carrier is located behind the longitudinal axis of the brush handle connector.

[0011] Preferably, each level of the multi-level design has a groove on its side, and when the soft rubber wraps around the extension, the soft rubber comes into contact with the groove.

[0012] Preferably, in the brush head area corresponding to the central bristle ring, a first bristle density is set per unit area of ​​the brush head area; in the brush head area corresponding to the surrounding bristle ring, a second bristle density is set per unit area of ​​the brush head area; the first bristle density is higher than the second bristle density.

[0013] Preferably, the number of central hair-implanting rings is one or more, and each central hair-implanting ring is provided with multiple hair-implanting holes.

[0014] In addition, this patent also relates to an electric toothbrush, including an electric toothbrush head as described in any of the preceding claims.

[0015] Compared to existing technologies, this patent improves the bonding force between the soft rubber and the brush head by extending the soft rubber outwards, allowing the soft rubber to remain relatively stable on the brush head. Furthermore, when the movable bristle rings are connected to each other, the exposed extensions prevent excessive deformation of the soft rubber during use, thus securing the soft rubber and the bristle rings and preventing them from loosening or detaching from the brush head. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the front structure of the toothbrush head in this specific embodiment;

[0018] Figure 2This is a schematic diagram of the structure of the lower surface of the toothbrush head in this specific embodiment;

[0019] Figure 3 This is a schematic diagram of the front surface structure of the toothbrush head in this specific embodiment;

[0020] Figure 4 This is a schematic diagram of the rear structure of the toothbrush head in this specific embodiment;

[0021] Figure 5 This is a side view of the toothbrush head after the soft rubber has been removed in this specific embodiment;

[0022] Figure 6 This is a side view of the toothbrush head in this specific embodiment.

[0023] Figure label:

[0024] Toothbrush head 1, handle connection 2, extension 3, soft rubber part 4, bristle part 5, neck 6, platform shape 7, groove 8, surrounding bristle ring 11, central bristle ring 12, connecting strip 13, exposed part 14, bevel 15. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connected" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0028] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0029] This specific embodiment provides an electric toothbrush head, such as Figures 1-6 As shown. The toothbrush head 1 includes a handle connecting part 2, an extension part 3, a soft rubber part 4, and a bristle part 5.

[0030] The brush handle connecting part 2 is located at the lower part of the entire brush head and is formed into a tubular shape. The bottom end of the brush head connecting part is provided with a mounting structure that is compatible with the electric toothbrush handle, especially the output shaft structure of the motor in the brush handle, so that the electric toothbrush head can be detachably mounted on the brush handle.

[0031] The brush handle connecting part can be of various suitable shapes. This specific embodiment is merely an example. In this specific embodiment, such as... Figure 2 As shown, the bottom cross-section of the brush handle is generally circular to provide uniform force in all directions after the electric toothbrush handle is connected. The cross-section of the brush handle is circular from bottom to top, but the diameter gradually decreases from bottom to top to provide a more convenient size for implantation in the oral cavity. The brush handle connection part can be made of plastic.

[0032] The connection structure between the brush handle connector and the motor output shaft has been extensively described in existing technologies and will not be elaborated upon in this application.

[0033] like Figures 5-6 As shown, the extension 3 extends upward from the top of the handle connector. The extension includes a neck 6, which is located at the upper end of the handle connector 2 and extends vertically, similar to the handle connector. Preferably, the diameter of the neck is smaller than the diameter of the handle connector, so that when soft rubber is wrapped around the neck, the entire electric toothbrush head forms a smooth surface, maintaining better oral comfort.

[0034] To improve the strength of the soft rubber connection, the interface between the handle connector and the neck can be formed as a slope 15 with an inclination angle in the front-to-back direction. For example, it can be gradually inclined from the front surface of the brush head to the bottom of the brush head from the rear surface. Since the brush head mainly relies on the bristles to contact the teeth when brushing, while the back side usually contacts the skin inside the mouth, the inclination from the front surface to the back surface allows for a larger area of ​​soft rubber on the rear surface. This maximizes the size of the soft rubber that contacts the skin when brushing, thus improving the sensation on the oral skin during brushing. In addition, the larger surface area of ​​the inclined surface increases the fixing strength between the soft rubber and the handle connector.

[0035] The neck 6 of the extension continues upward to form a bristle support portion for supporting the soft rubber connected to the bristle portion. For this purpose, the front surface of the bristle support portion is generally formed as a flat platform shape 7, with a multi-level shape that gradually decreases in size from the platform rearward. The platform provides support for the bristle-planting portion in the middle of the bristle area, and the multi-level shape below the platform surrounds the soft rubber, providing more soft rubber material to reduce irritation to the oral cavity when the brush head vibrates.

[0036] like Figures 5-6 As shown in this specific embodiment, the multi-level shape has 4 layers, and the cross-sectional area of ​​each layer gradually decreases. The main function of this structure is that the bearing part on one side of the bristles needs to provide sufficient support for the bristles, so it requires a larger area. However, on the other side, if more soft rubber is provided, the brushing experience can be improved, and maintaining a large volume of soft rubber is beneficial for shock absorption in the soft rubber area.

[0037] Furthermore, in the multi-level design beneath the platform, each layer has a groove 8 formed on its side to allow the soft adhesive to be better embedded into each layer and maintain its adhesion strength.

[0038] Furthermore, such as Figures 5-6 As shown, in this specific embodiment, the longitudinal axis of the bristle-bearing portion is located behind the longitudinal axis of the brush handle connecting portion. That is, the extension is not centrally aligned with the brush handle connecting portion, but rather slightly moved rearward in the front-to-back direction. This allows for a larger space on the front surface to accommodate bristles while maintaining the same brush head size, and enables more soft rubber to be installed on the rear surface due to the gradually narrowing multi-stage structure without affecting the shock absorption effect.

[0039] Furthermore, preferably, a groove can be provided on the side of each level of the multi-level shape, so that when the soft rubber wraps around the extension, it can be accommodated in the groove, thereby improving the bonding stability of the soft rubber.

[0040] like Figures 4-6 As shown, the soft rubber has an opening at the position corresponding to the last stage of the multi-level shaping, so that the last stage can be exposed outside the soft rubber, forming an exposed part 14, which can apply holding force to the soft rubber in multiple directions, namely front-back and left-right directions.

[0041] In this specific embodiment, the bristle portion 5 includes a bristle ring 9 and bristles 10, wherein the bristle ring 9 is at least partially disposed within the soft adhesive. The bristle ring comprises a plurality of interconnected bristle rings, and the bristle ring is generally annular with its opening facing the front-to-back direction. In this specific embodiment, the bristles are disposed within the bristle ring, with the inner head of the bristle fused to form a fixed end, positioned outside the bottom of the bristle ring, and the remaining bristles passing through the bristle ring and the soft adhesive and protruding outwards.

[0042] Furthermore, such as Figure 3 As shown, the bristle implantation ring includes a peripheral bristle implantation ring 11 and a central bristle implantation ring 12. The peripheral bristle implantation ring has multiple bristle implantation ring units connected to each other by connecting strips 13. Each bristle implantation ring unit has bristles embedded in it. The rear ends of the bristles are fused to the lower surface of the bristle implantation ring to form a fixing head, and the front ends of the bristles extend through the bristle implantation ring and protrude from the soft rubber for cleaning purposes.

[0043] The surrounding bristle rings 11 are distributed around the projection of the last step onto the front surface of the brush head, and multiple surrounding bristle rings are connected to each other by connecting strips 13. When brushing, if a region is subjected to force, based on the connection between the surrounding bristle rings, the bristle rings in the stressed area will simultaneously drive the bristle rings in other areas to move together, thus pulling the soft rubber as a whole. At this time, since the last step is exposed on the soft rubber, regardless of whether it is pulled upwards, downwards, leftwards, or rightwards, the last step can firmly abut against and hold the soft rubber, preventing it from falling off the brush head. The connection of multiple bristle rings together provides a strong bond between the bristle rings and the soft rubber, ensuring a high degree of fixation between the bristles and the soft rubber. This achieves both shock absorption and a good brushing experience for the soft rubber brush head, while ensuring a stable connection between the soft rubber and the brush head, and between the bristles and the soft rubber.

[0044] Furthermore, in this specific embodiment, the number of central bristle-embedding rings can be one or more. Each central bristle-embedding ring can also have multiple bristle-embedding holes, and bristle clusters are provided in the bristle-embedding holes. The rear ends of the bristle clusters are fused together to prevent the bristle clusters from falling out of the bristle-embedding ring.

[0045] Because the central region comes into frequent contact with the teeth, it typically has a higher bristle density than the surrounding areas. This results in a higher density of bristle pores in the central region. Simultaneously, since the central area needs to provide sufficient support against the teeth, it can have less elasticity. In this specific embodiment, the central region lies within the orthographic projection of the platform shape. Thus, the platform shape behind the bristle ring in the central region has relatively high rigidity, resulting in minimal overall deformation. A thin layer of soft rubber or no soft rubber can be placed between the platform and the bristle ring, providing high support for the central region. The surrounding areas, where the bristles in the platform are needed to clean the periphery of the teeth or interdental spaces, lie outside the orthographic projection of the platform shape. This allows the surrounding areas to be supported by more soft rubber, resulting in higher elastic deformation. This achieves a reasonable distribution of bristle hardness, effectively cleaning the front of the teeth and ensuring good contact and cleaning of the peripheral areas of teeth with different shapes.

[0046] According to another aspect of this specific embodiment, an electric toothbrush is also provided, the electric toothbrush including the aforementioned electric toothbrush head.

[0047] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An electric toothbrush head, characterized in that, include: The handle connection part is connected to the handle of the electric toothbrush for power connection; An extension extends upward from the tip of the brush handle; A soft rubber portion covers the extension portion, and the soft rubber portion has an opening on its rear surface, with at least a portion of the extension portion protruding from the opening beyond the rear surface of the opening; The bristle section includes a plurality of bristle rings fixedly disposed on the soft rubber, wherein at least some of the bristle rings are located outside the front-back projection of the extension, and another portion of the bristle rings are located inside the front-back projection of the extension.

2. The electric toothbrush head according to claim 1, characterized in that, The hair implantation ring includes a peripheral hair implantation ring and a central hair implantation ring. The surrounding hair-planting ring has multiple hair-planting ring units, at least some of which are connected together by connecting strips and are located outside the front-rear projection of the extension. The central hair-planting ring has multiple hair-planting holes, and the central hair-planting ring is at least partially located within the front-back projection of the extension.

3. An electric toothbrush head according to claim 1, characterized in that, The bristle ring opening is positioned in the front-to-back direction. The lower end of the bristles is fused to the lower surface of the bristle ring to form a fixing head. The front end of the bristles extends through the bristle ring and protrudes beyond the soft rubber.

4. An electric toothbrush head according to claim 2, characterized in that, The extension includes a neck, which is disposed at the upper end of the brush handle connector. The diameter of the neck is smaller than the diameter of the brush handle connector, and the neck is completely covered by the soft rubber. A bristle carrier is disposed at the upper end of the neck, and the rear end of the bristle carrier protrudes from the opening beyond the rear surface of the opening.

5. An electric toothbrush head according to claim 4, characterized in that, The front surface of the bristle carrier is generally formed as a flat platform shape, and has a multi-level shape with gradually decreasing size from the platform to the rear.

6. An electric toothbrush head according to claim 5, characterized in that, The longitudinal axis of the bristle carrier is located behind the longitudinal axis of the brush handle connector.

7. An electric toothbrush head according to claim 5, characterized in that, Each of the multi-level shapes has a groove on its side, and when the soft rubber wraps around the extension, the soft rubber comes into contact with the groove.

8. An electric toothbrush head according to claim 2, characterized in that, In the brush head area corresponding to the central bristle ring, a first bristle density is set per unit area of ​​the brush head area; in the brush head area corresponding to the surrounding bristle ring, a second bristle density is set per unit area of ​​the brush head area; the first bristle density is higher than the second bristle density.

9. An electric toothbrush head according to claim 2, characterized in that, The number of central hair implantation rings is one or more, and each central hair implantation ring is provided with multiple hair implantation holes.

10. An electric toothbrush, characterized in that, Includes an electric toothbrush head as described in any one of claims 1-9.

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