Elastic gum shield toothbrush

Abstract

The utility model relates to oral cavity nursing tool's technical field especially, it relates to elastic gum protection toothbrush, including brush head skeleton, the deformation part of being located at the brush head skeleton, the cleaning part of being located at the deformation part, the cleaning part includes a plurality of brush bundle, each brush bundle is arranged on the deformation part, the deformation part has the initial state and the tooth brushing state that protrude and recess relative to the brush head skeleton, each brush bundle has the divergent shape and the gather shape that correspond to the initial state and the tooth brushing state of the deformation part respectively. When gathering, the effect pressure intensity of brush to gum is reduced, gum bleeding is prevented, the effect pressure intensity of brush to tooth is increased, and the cleaning strength is improved, when the cleaning part diverges, the gap between each brush bundle can be increased, which is beneficial to the ventilation and drying of accumulated water and brush, effectively avoids the bacterial breeding, improves the sanitary performance of the brush head, prolongs the service life of the toothbrush and ensures the safe use of the user.

Description

Technical Field

[0001] This utility model relates to the technical field of oral care tools, and in particular to a flexible gum-protecting toothbrush. Background Technology

[0002] To improve brushing comfort and reduce gum irritation from toothbrush bristles, thereby minimizing gum bleeding, current toothbrush technology typically employs methods such as reducing bristle diameter and increasing bristle density. This increases bristle softness and the contact area between the bristles and the mouth, thus reducing the intensity of the bristles' impact on the gums and achieving gum protection. However, this approach often results in reduced pressure on the teeth due to overly soft bristles, leading to decreased cleaning power. Furthermore, the increased bristle density can cause water to accumulate on the bristles, making them difficult to dry and promoting bacterial growth.

[0003] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0004] This invention addresses the problems of existing soft-bristled toothbrushes made using processes that reduce bristle diameter and increase bristle quantity, which result in decreased cleaning power, difficulty in drying the bristles, and easy bacterial growth. It proposes an elastic gum-protecting toothbrush.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An elastic gum-protecting toothbrush includes a brush head frame, a deformable portion disposed on the brush head frame, and a cleaning portion disposed on the deformable portion. The cleaning portion includes a plurality of bristle bundles, each of which is arranged on the deformable portion. The deformable portion has an initial state and a brushing state that are protruding and recessed relative to the brush head frame. Each bristle bundle has a diverging shape and a converging shape corresponding to the initial state and the brushing state of the deformable portion, respectively.

[0006] The elastic gum-protecting toothbrush described above has a deformable part made of a soft material capable of elastic deformation.

[0007] In the elastic gum-protecting toothbrush described above, each of the bristle bundles and the deformable part are integrally formed.

[0008] As described above, the flexible gum-protecting toothbrush contains at least one of TPE, TPU, and silicone as the soft material capable of elastic deformation, and the Shore hardness of the deformed portion is greater than 90A.

[0009] As described above, the flexible gum-protecting toothbrush has a brush head skeleton with opposing mesial and distal sides, and the deformable portion extends from the mesial side toward the distal side.

[0010] As described above, in the elastic gum-protecting toothbrush, the deformable part is made of a rigid material capable of elastic deformation, and the rigid material capable of elastic deformation includes at least one of metal and plastic.

[0011] As described above, the elastic gum-protecting toothbrush has a plurality of arranged bristle holes on the deformable part, and each bristle bundle is correspondingly disposed in each of the bristle holes.

[0012] The elastic gum-protecting toothbrush described above has a heat-fusion section on the inner and / or outer side of any of the hair implantation holes. The heat-fusion section is made of plastic and is used to heat-melt the bristle bundles to fix them in the hair implantation holes.

[0013] As described above, the elastic gum-protecting toothbrush also has a partition located on one side of the deformable part inside the brush head frame, and the partition, the brush head frame and the deformable part are arranged to form a hollow cavity.

[0014] As described above, the elastic gum-protecting toothbrush also has a wrapping portion located on one side of the partition portion inside the brush head frame, and the partition portion is located between the hollow cavity and the wrapping portion.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting an elastically deformable deformation part on the brush head, when brushing, the deformation part is subjected to a positive force and can be deformed inward relative to the tooth side towards the inside of the brush head skeleton. At the same time, it drives the cleaning ends of each bristle bundle to converge towards the central axis of the deformation part, forming a cleaning surface with increased bristle density and reduced area. This reduces the pressure of the bristles on the gums, preventing gum bleeding, while increasing the pressure of the bristles on the teeth, thus improving the cleaning power.

[0016] 2. When the positive force on the deformable part decreases or is removed, the deformable part as a whole can protrude and deform relative to the tooth side in a direction away from the brush head skeleton to return to its initial state. At the same time, it drives the cleaning ends of each bristle bundle to diverge outward along the central axis of the deformable part to increase the gap between each bristle bundle. This is beneficial for draining water and for the bristles to be ventilated and dried, effectively preventing bacterial growth, improving the hygiene performance of the brush head, extending the life of the toothbrush, and ensuring the user's safe use.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a side view of the brush head structure of the elastic gum-protecting toothbrush of this utility model; Figure 2 This is a front view of the brush head structure of the elastic gum-protecting toothbrush of this utility model; Figure 3This is a schematic diagram illustrating the stress deformation process of the deformable part and the cleaning part of the elastic gum-protecting toothbrush of this utility model; Figure 4 This is a schematic diagram of another optional embodiment of the deformable part of the elastic gum-protecting toothbrush of this utility model; Figure 5 This is a schematic diagram of another optional embodiment of the deformable part of the elastic gum-protecting toothbrush of this utility model; Figure 6 This is a schematic diagram of another optional embodiment of the deformable part of the elastic gum-protecting toothbrush of this utility model; Figure 7 This is a schematic diagram showing the arrangement of the bristle bundles in the cleaning section of the elastic gum-protecting toothbrush of this utility model. Figure 8 This is a schematic diagram of an optional embodiment of the heat-fused part of the elastic gum-protecting toothbrush of the present invention; Figure 9 This is a schematic diagram of another optional embodiment of the heat-fused part of the elastic gum-protecting toothbrush of this utility model. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Example 1: like Figures 1 to 3As shown, this utility model provides an elastic gum-protecting toothbrush, including a brush head frame 1, a deformation part 2 disposed on the brush head frame 1, and a cleaning part 3 disposed on the deformation part 2. The cleaning part 3 includes a plurality of bristle bundles 31, and each bristle bundle 31 is arranged on the deformation part 2. The deformation part 2 has an initial state and a brushing state that are protruding and recessed relative to the brush head frame 1, and each bristle bundle 31 has a diverging shape and a converging shape corresponding to the initial state and the brushing state of the deformation part 2, respectively.

[0023] In this embodiment, the proximal side 11 of the brush head frame 1 refers to the side of the brush head frame 1 facing the oral cavity when brushing. The deformable part 2 is located close to the proximal side 11 of the brush head frame 1, and the deformable part 2 is provided with a cleaning part 3 for cleaning oral structures such as teeth. The cleaning part 3 includes a plurality of bristle bundles 31 connected to the deformable part 2. Each bristle bundle 31 has a fixed end 312 for connecting to the deformable part 2 and a cleaning end 311 away from the deformable part 2 for cleaning. By providing the elastically deformable part 2 on the brush head, when brushing, the deformable part 2 is subjected to a positive force F and can be deformed inward relative to the proximal side 11 towards the inside of the brush head frame 1, while driving the cleaning ends 311 of each bristle bundle 31 towards the deformable part 2. The bristles converge along the central axis L, forming a cleaning surface 32 with increased bristle density and reduced area. This reduces the pressure exerted by the bristles on the gums, preventing gum bleeding, while simultaneously increasing the pressure exerted by the bristles on the teeth, thus enhancing cleaning power. Furthermore, when the positive force F acting on the deformable part 2 decreases or is removed, the deformable part 2 as a whole can bulge and deform relative to the proximal side 11 in a direction away from the brush head frame 1 to return to its initial state. Simultaneously, it drives the cleaning ends 311 of each bristle bundle 31 to diverge outwards along the central axis L of the deformable part 2, increasing the gaps between the bristle bundles 31. This facilitates water drainage and bristle ventilation and drying, effectively preventing bacterial growth, improving the hygiene performance of the brush head, extending the toothbrush's lifespan, and ensuring safe use by the user.

[0024] Specifically, such as Figure 3As shown, when the deformable part 2 is in its initial state, it is not subject to external force and protrudes outward from the brush head frame 1 relative to the proximal tooth side 11. At this time, the deformable surface 20 on the deformable part 2 is an outwardly convex surface, causing each bristle bundle 31 to disperse in different directions along the contour of the outwardly convex surface, thereby making the cleaning part 3 in a divergent state. At this time, drainage channels 33 can be formed around each bristle bundle 31, and each drainage channel 33 extends along the contour of the outwardly convex surface. The outwardly convex surface helps to guide residual water in the brush head after the user washes through the drainage channels 33. At the same time, when the toothbrush is in a natural ventilated environment, ventilation gaps 34 are generated between each bristle bundle 31 in the divergent state and connected to the drainage channels 33. The ventilation gaps 34 can also enhance airflow, which is conducive to the drying of the bristles, effectively preventing bacterial growth, thereby improving the hygiene performance of the brush head, extending the service life of the toothbrush, and ensuring the user's safe use.

[0025] like Figure 3 As shown, during brushing, the cleaning part 3 is subjected to a positive force F from the oral cavity structure, which drives the deformable part 2 to deform inward relative to the proximal tooth side 11 towards the inside of the brush head frame 1. This causes the deformable part 2 to switch from the initial state to the brushing state. At this time, a concave surface is formed on the deformable part 2, causing the cleaning ends 311 of each bristle bundle 31 to converge towards the central axis L of the concave surface. This causes the cleaning part 3 to switch to a converged state, where the cleaning ends 311 of each bristle bundle 31 are concentrated in a denser area with a smaller surface area. In the cleaning surface 32, during brushing, the contact area between the bristles and the gums is reduced, thereby reducing the intensity of the action on the gums and effectively preventing gum bleeding. At the same time, the cleaning surface 32 increases the intensity of the action on the teeth, thereby enhancing the cleaning power and improving the brushing efficiency. When brushing is finished, the positive force F applied by the teeth to the cleaning part 3 is removed. At this time, the deformable part 2 can automatically rebound and return to the initial state under its own elastic force, so that the cleaning part 3 returns to the divergent shape.

[0026] Furthermore, the deformable part 2 is configured to conform to the inner contour of the brush head frame 1. The deformable surface 20 on the deformable part 2 can be circular or elliptical, without specific limitation here; as an optional embodiment of this solution, such as Figure 2 As shown, the deformable part 2 extends along the length direction of the brush head skeleton 1 and can form an elliptical deformable surface 20.

[0027] Furthermore, as an optional embodiment of this solution, such as Figure 3As shown, when the deformable surface 20 undergoes concave elastic deformation under force, the concavity height of the deformable surface 20 gradually decreases from the central axis L of the deformable part 2 towards both sides, in order to facilitate the formation of a concave surface and ensure that the cleaning ends 311 of each bristle bundle 31 converge towards the central axis L of the deformable part 2. Furthermore, the concavity height of the deformable surface 20 is the normal displacement of the deformable surface 20 under the brushing pressure. The maximum concavity height of the deformable surface 20 can be set based on Hooke's law according to the elastic modulus of the deformable part 2 and the pressure applied by the user when brushing. For example, under normal circumstances, the pressure applied by the user when brushing is 2 to 5 N, and the maximum concavity height of the deformable surface 20 can be set to 1 to 3 mm; when the user brushes gently, the pressure is 0.5 to 2 N, and the maximum concavity height of the deformable surface 20 can be set to 0.3 to 1 mm, in order to avoid damaging the gums.

[0028] Further optionally, when the user brushes their teeth normally, the maximum concavity height of the deformable surface 20 can be set to 1mm, 1.5mm, 2mm or 3mm, etc.; when the user brushes their teeth gently, the maximum concavity height of the deformable surface 20 can be set to 0.5mm or 1mm, etc.

[0029] As another optional embodiment of this solution, such as Figure 3 As shown, the deformable part 2 is also provided with a connecting part 25 connected to the brush head frame 1 on its periphery. The connecting part 25 is provided at least between the deformable part 2 and the proximal tooth side 11 of the brush head frame 1. The connecting part 25 enhances the connection strength of the deformable part 2 in the brush head frame 1. When the deformable part 2 undergoes concave deformation or convex deformation relative to the proximal tooth side 11, the connecting part 25 can suppress the deformation and pulling of the edge of the deformable part 2 relative to the brush head frame 1 to a certain extent, so as to enhance the structural strength of the deformable part 2 and extend its service life.

[0030] As an optional embodiment of this solution, the deformable part 2 is made of a soft material capable of elastic deformation, enabling the deformable part 2 to quickly and accurately produce controllable concave deformation when subjected to force, and to rapidly recover its convex shape when the external force disappears. This ensures that the deformable part 2 maintains an integral deformable surface 20 that produces concave and convex elastic deformation, thereby precisely controlling the switching of the bristle bundle 31 between the divergent and convergent shapes, further optimizing the balance between gum protection and cleaning effect. Secondly, the soft material has excellent elastic memory function, which can be repeatedly subjected to force during daily brushing, maintaining a stable elastic deformation cycle and avoiding the attenuation of deformation ability due to material fatigue or plastic deformation. This ensures that the bristle bundle 31 can always reliably converge during brushing to maintain sufficient cleaning pressure and reduce gum irritation, and stably disperse in the initial state to ensure bristle drainage and drying, thus improving the durability of the toothbrush.

[0031] Furthermore, the soft material capable of elastic deformation includes at least one of TPE, TPU, and silicone, and the Shore hardness of the deformable part 2 is greater than 90A, so that the deformable part 2 can produce stable and controllable concave deformation when subjected to force, and will not cause excessive deformation due to its own material being too soft, resulting in excessive gathering of bristles that damages the oral cavity structure or lack of resistance when pressing.

[0032] Preferably, during the production process, the deformable part 2 can be integrally formed from the aforementioned soft material to increase the structural strength and deformability of the deformable part 2, enabling it to generate controllable concave deformation quickly and accurately.

[0033] As an optional embodiment of this solution, each bristle bundle 31 is integrally formed with the deformation part 2. Optionally, each bristle bundle 31 and the deformation part 2 can be integrally formed through processes such as injection molding or compression molding, so that the root of each bristle bundle 31 and the deformation part 2 form a seamless connection, avoiding the loosening, falling off, or relative displacement problems that may occur between the bristles and the deformation part 2 due to bonding, snapping, or other methods in the traditional separate design of bristles and bristle implantation surface 21. In practical applications, when the deformation part 2 is compressed and deformed into a concave shape or rebounded and deformed into a convex shape during brushing, the integrally formed connection structure ensures that each bristle bundle 31 can synchronously and uniformly switch to a converged or divergent shape with the concavity or convexity of the deformation part 2, further optimizing the consistency and synchronicity of the transition of each bristle bundle 31 between different states following the deformation of the deformation part 2, and improving the accuracy of brushing and the gum protection effect.

[0034] As a preferred embodiment of this solution, each of the bristle bundles 31 and the deformable part 2 are integrally injection molded to simplify the processing technology of the brush head. The brush head skeleton 1 can be made of a rigid material to fix and support the deformable part 2. The brush head skeleton 1 can be integrally injection molded. The deformable part 2 and the brush head skeleton 1 can be made by a two-color injection molding process, which is not specifically limited here.

[0035] As an optional embodiment of this solution, such as Figure 3 As shown, the brush head frame 1 has a proximal side 11 and a distal side 12, and the deformable part 2 extends from the proximal side 11 toward the distal side 12. In this embodiment, the brush head frame 1 has a mounting cavity for accommodating the deformable part 2 extending along its thickness direction. The mounting cavity extends along the length direction of the brush head frame 1, and the deformable part 2 is located in the mounting cavity. Moreover, as... Figure 4 As shown, the thickness of the deformable part 2 can be set to be the same as the thickness of the brush head frame 1, or, as... Figure 3As shown, the deformable part 2 may also have a portion protruding from the brush head frame 1 via the distal tooth side 12. By protruding from the brush head frame 1 via the deformable part 2, the deformable part 2 can make flexible contact with the oral cavity structure during brushing, thereby protecting the oral cavity structure and further optimizing the user's brushing experience.

[0036] Further optional, such as Figure 2 As shown, the brush head frame 1 includes a first support 101 and a second support 102 arranged opposite to each other, and the first support 101 and the second support 102 are at least partially arc-shaped to form an elliptical assembly cavity structure, which is conducive to ensuring the processing and forming of the deformable part 2; more preferably, the first support 101 and the second support 102 are combined to form a U-shaped support.

[0037] Further optional, Figure 7 Another optional embodiment of this solution is shown, wherein each of the bristle bundles 31 is arranged on the deformable part 2. Specifically, the cleaning part 3 includes a first bristle bundle group 301, a second bristle bundle group 302, and a third bristle bundle group 303 arranged sequentially from the inside to the outside on the deformable part 2. The first bristle bundle group 301, the second bristle bundle group 302, and the third bristle bundle group 303 each include a plurality of bristle bundles 31. The number of bristle bundles 31 in the first bristle bundle group 301, the second bristle bundle group 302, and the third bristle bundle group 303 can be adjusted according to their arrangement position on the deformable part 2.

[0038] Furthermore, such as Figure 7As shown, each of the bristle bundles 31 in the first bristle bundle group 301 is distributed along the central axis L of the deformable part 2. The first bristle bundle group 301 includes a first bristle bundle 301a, a second bristle bundle 301b, a third bristle bundle 301c, a fourth bristle bundle 301d, and a fifth bristle bundle 301e. The fifth bristle bundle 301e is provided in a plurality of units and is evenly distributed along the central axis L of the deformable part 2. The first bristle bundle 301a and the second bristle bundle 301b are symmetrically arranged on both sides of the fifth bristle bundle 301e. The third bristle bundle 301c and the fourth bristle bundle 301d are symmetrically arranged on both sides of the fifth bristle bundle 301e, and the third bristle bundle 301c and the fourth bristle bundle 301d are located on the periphery of the first bristle bundle 301a and the second bristle bundle 301b. Each of the bristle bundles 31 in the second bristle bundle group 302 is distributed along the first elliptical path S1 in the deformation section 2. The first bristle bundle 301a and the second bristle bundle 301b are respectively located at both ends of the major axis of the first elliptical path S1. The second bristle bundle group 302 includes a first left bristle bundle 302a and a first right bristle bundle 302b symmetrically arranged on the first elliptical path S1. A plurality of the first left bristle bundles 302a and the first right bristle bundles 302b are provided in a one-to-one correspondence. Each first left bristle bundle 302a is generally evenly distributed along the first elliptical path S1 on the left side of the central axis L of the deformation section 2, and each first right bristle bundle 302b is generally evenly distributed along the first elliptical path S1 on the right side of the central axis L of the deformation section 2.The bristle bundles 31 of the third bristle group 303 are distributed along the second elliptical path S2 in the deformable part 2, and the second elliptical path S2 is located outside the first elliptical path S1. The third bristle bundle 301c and the fourth bristle bundle 301d are respectively located at both ends of the major axis of the second elliptical path S2. The third bristle group 303 includes a second left bristle bundle 303a and a second right bristle bundle 303b symmetrically arranged on the second elliptical path S2. Several second left bristle bundles 303a and second right bristle bundles 303b are arranged in a one-to-one correspondence. Each second left bristle bundle 303a is roughly evenly distributed along the second elliptical path S2 on the left side of the central axis L of the deformable part 2, and each second right bristle bundle 303b is roughly evenly distributed along the second elliptical path S2 on the right side of the central axis L of the deformable part 2. This optimizes the arrangement of the bristle bundles 31 on the deformable part 2. When the deformable part 2 is in a concave brushing state, the first left bristle bundle 303a is evenly distributed along the second elliptical path S2 on the right side of the central axis L of the deformable part 2. The side bristle tufts 302a and the first right side bristle tuft 302b, and the second left side bristle tufts 303a and 303b respectively converge in the direction perpendicular to the central axis L of the deformation section 2. The first left side bristle tufts 302a and the second left side bristle tufts 303a are staggered, meaning each first left side bristle tuft 302a is located between two adjacent second left side bristle tufts 303a. Similarly, the first right side bristle tufts 302b and the second right side bristle tufts 303b are staggered. This staggered arrangement increases the bristle density and uniformity of the cleaning surface 32, preventing sparse bristles and localized increases in density, thereby ensuring improved toothbrush cleaning power and optimized user experience. It should be noted that the fixed ends 312 of each bristle tuft 31 are distributed along different paths to form the arrangement of the first bristle tuft group 301, the second bristle tuft group 302, and the third bristle tuft group 303.

[0039] Optional, such as Figure 7 As shown, the minor axis length of the first elliptical path S1 is half the minor axis length of the second elliptical path S2, and the difference between the major axis length of the second elliptical path S2 and the major axis length of the first elliptical path S1 is the sum of the distance between the first hair bundle 301a and the third hair bundle 301c and the distance between the second hair bundle 301b and the fourth hair bundle 301d; further optionally, the distance between the first hair bundle 301a and the third hair bundle 301c is equal to the distance between the third hair bundle 301c and the fifth hair bundle 301e closest to it, and similarly, the distance between the second hair bundle 301b and the fourth hair bundle 301d is equal to the distance between the fourth hair bundle 301d and the fifth hair bundle 301e closest to it.

[0040] Optional, such as Figure 3 and Figure 7As shown, when the deformable part 2 is in the initial outward convex state, each bristle bundle 31 is perpendicular to the outward convex surface of the deformable part 2; when the deformable part 2 is in the concave brushing state, the bristle bundle 31 of the first bristle bundle group 301 sinks down along the central axis L of the deformable part 2, and the bristle bundle 31 of the second bristle bundle group 302 and the bristle bundle 31 of the third bristle bundle group 303 converge toward the central axis L of the deformable part 2, so that a slightly concave cleaning surface 32 is formed on the cleaning part 3, so that the cleaning surface 32 fits the tooth surface contour better, thereby making the bristles maintain uniform contact with the tooth surface and reducing the cleaning blind spots in the teeth.

[0041] Example 2: Figure 5 This illustration shows another optional embodiment of the present solution. The difference between this second embodiment and the first embodiment is that the deformable part 2 is made of a soft material capable of elastic deformation. The brush head frame 1 also includes a partition 13 located on one side of the deformable part 2. The partition 13, the brush head frame 1, and the deformable part 2 enclose a relief cavity. In this embodiment, the relief cavity provides sufficient concave deformation space for the soft deformable part 2, reducing its deformation resistance and thus enhancing its deformation capability. This, in turn, strengthens the gathering effect of the cleaning part 3, thereby improving the toothbrush's cleaning power. Furthermore, by providing the relief cavity, the material usage of the brush head frame 1 is reduced, facilitating a lighter toothbrush and improving handheld comfort. Additionally, in actual production, the relief cavity can be directly formed by adjusting the distance between the partition 13 and the deformable part 2, eliminating the need for additional assembly steps. This shortens the production process and improves toothbrush production efficiency.

[0042] Further optional, such as Figure 5 As shown, the thickness of the deformable part 2 is less than the thickness of the brush head frame 1, so as to ensure that the relief cavity has sufficient space in the brush head frame 1.

[0043] As another optional embodiment of this solution, the partition 13 can be configured as a partition plate, and the brush head frame 1 is also provided with a wrapping part 15 located outside the partition plate. The wrapping part 15 covers the partition plate to improve the aesthetics of the toothbrush and further optimize the user experience.

[0044] Example 3: Figure 6This paper illustrates another optional embodiment of the elastic gum-protecting toothbrush in this solution. The difference between this third embodiment and embodiments one and two is that the deformable part 2 is made of a rigid material capable of elastic deformation. This embodiment improves the functionality and applicability of the elastic gum-protecting toothbrush by improving the material of the deformable part 2 and setting a rigid elastic deformable part 2. It also improves the deformation accuracy of the deformable part 2, making the overall concave-convex deformation of the deformable surface 20 in the deformable part 2 more controllable and precise. This allows the gathering or dispersing shape of each bristle bundle 31 to better adapt to the user's brushing force. The synchronous design further enhances the controllability of the toothbrush's cleaning effect, as well as its gum-protecting effect and brushing comfort. Secondly, the rigid elastic material has a higher elastic modulus, which can reduce the stress load on the rigid deformation part 2, effectively preventing the accumulation of plastic deformation caused by long-term repeated deformation of the deformation part 2, preventing the thickness reduction and uneven deformation attenuation of the deformation part 2 under long-term use, thereby extending the service life of the deformation part 2. In addition, the rigid deformation part 2 can improve the connection strength and stability with the brush head frame 1, which can reduce the risk of the deformation part 2 separating from the brush head frame 1 during long-term use, thereby improving the service life and reliability of the toothbrush.

[0045] Furthermore, the rigid material capable of elastic deformation includes at least one of metal and plastic materials. In actual production and processing, by improving the manufacturing materials and processes of the rigid deformation part 2, the adaptability and functionality of the toothbrush to different usage scenarios can be enhanced, solving the limitations of traditional toothbrushes in terms of performance, cost, and application range. It should be noted that the thickness of the rigid deformation part 2 can be adjusted according to the material selected in actual production, its elastic modulus, and the preset recess height, and is not specifically limited here.

[0046] Optionally, the metal material includes pure metal or alloy. For example, the metal material can be one of spring steel, titanium alloy, nickel-titanium shape memory alloy, etc. When the deformable part 2 is made of metal material, while ensuring that the deformable part 2 is deformed concave and convex relative to the brush head skeleton 1, the metal deformable part 2 is not prone to plastic deformation or fracture, ensuring the structural stability of the toothbrush for long-term use. This allows the toothbrush to adapt to scenarios where brushing is done with great force, such as when orthodontic patients need to apply 5-8N of pressure to the toothbrush when cleaning brackets. Secondly, the metal deformable part 2 can improve the tolerance to high-temperature sterilization and strong acid and alkali environments, and is not prone to aging, swelling or deformation failure. It can adapt to surgical toothbrushes that require repeated high-temperature sterilization in medical scenarios.

[0047] Furthermore, to avoid the problem of corrosion and oxidation of the metal deformation part 2 when exposed to water for a long time, a waterproof treatment can be applied to the surface of the metal deformation part 2, such as coating a waterproof layer. Alternatively, the metal deformation part 2 can be made of a waterproof metal material to improve the stability of the metal deformation part 2, extend its service life, improve the safety of the toothbrush, and protect the user's oral health.

[0048] Alternatively, the plastic material may include at least one of the following: shape memory polymer (SMP), glass fiber reinforced thermoplastic elastomer (GF-TPE), and polycarbonate (PC). These plastic materials have the advantages of being easy to process and having low cost. The deformable part 2 can be integrally injection molded, which greatly simplifies the processing technology of the deformable part 2, facilitates large-scale production, and reduces production costs. It should be noted that in the actual toothbrush production process, a moderate elastic modulus and a moderate deformation range can be achieved by adjusting the corresponding plastic composition and formula, so that the deformable part 2 can be adapted to the actual application of the toothbrush. The specific composition ratio of the plastic material is not limited here.

[0049] Furthermore, the deformable part 2 is provided with a plurality of arranged hair implantation holes 22, and each bristle bundle 31 is correspondingly disposed in each hair implantation hole 22. Specifically, the rigid elastic deformable part 2 is provided with corresponding hair implantation holes 22 along the thickness direction of the brush head skeleton 1. Each hair implantation hole 22 is implanted into the hair implantation hole 22 at a preset spacing, angle and depth. Each hair implantation hole 22 provides a deformation guide track for each bristle bundle 31. When the rigid deformable part 2 undergoes concave and convex deformation under the force of brushing, the root of the bristle bundle 31 can be guided to move synchronously with the deformable part 2 through the inner wall of the hair implantation hole 22, and the cleaning end 311 of the bristle bundle 31 can be driven to gather or disperse along the central axis L of the deformable part 2, avoiding the traditional scattered bristles. The bristle bundle 31 can gather synchronously in the direction of the central axis L of the deformable surface 20 to form a continuous cleaning surface 32, ensuring that the force is uniform in each area of ​​the tooth surface, thereby improving the cleaning coverage.

[0050] Optionally, each of the bristle bundles 31 can be configured as fiber bristle bundles 31. In actual production, the bristle bundles 31 can be implanted into the corresponding bristle implantation holes 22 using a combination of copper sheet bristle implantation process or copper sheet-free bristle implantation process. Then, the hard deformable part 2 with the processed bristle implantation hole 22 is assembled on the bristle support with a preset curvature, so that the hard deformable part 2 is set on the bristle support in an outward convex initial state. When the cleaning part 3 is subjected to a positive force F, the hard deformable part 2 can be concave and deformed relative to the proximal tooth side 11 toward the inner side of the brush head skeleton 1. When the positive force F is removed or reduced, the hard deformable part 2 springs back to the outward convex initial state.

[0051] As an optional embodiment of this solution, such as Figure 8 and Figure 9 As shown, each of the bristle bundles 31 can be implanted into each of the bristle implantation holes 22 using a copper-free bristle implantation process. Specifically, each of the bristle implantation holes 22 has a heat-fusion part 23 on its inner and / or outer sides. The heat-fusion part 23 is made of plastic, and the bristle bundle 31 is fixed in the bristle implantation hole 22 by heat-fusion through the heat-fusion part 23. In this embodiment, as shown... Figure 9 As shown, each of the hair implantation holes 22 has a corresponding heat-melting part 23 on its inner side. The heat-melting part 23 can be a hollow plastic sleeve inserted into the hair implantation hole 22. Then, the bristle bundle 31 is inserted into the plastic sleeve, and the plastic sleeve is heated and melted to fix the bristle bundle 31 in the hair implantation hole 22; or, as... Figure 8 As shown, the deformable part 2 has a heat-melting part 23 on its outer wall facing the distal tooth side 12. Several heat-melting parts 23 are provided around each of the hair implantation holes 22. In this case, the heat-melting part 23 can be a plastic column. Then, the bristle bundle 31 is inserted into the hair implantation hole 22, and the plastic column is heated and melted to fix the bristle bundle 31 in the hair implantation hole 22. This embodiment uses a copper-free hair implantation process, directly fixing the bristle bundle 31 through the heat-melting part 23, avoiding the problem of metal residue. Meanwhile, the plastic hot-melt part 23 poses no risk of heavy metal migration, thus improving the hygiene and safety of the toothbrush. Secondly, after the material of the hot-melt part 23 melts upon heating, it penetrates into the micro-gaps on the bristle surface. When the hot-melt material cools, it can tightly fix the bristle bundles 31 in the bristle implantation holes 22, greatly improving the connection and structural strength of the bristle bundles 31 and effectively preventing bristle loss. Furthermore, this copper-free bristle implantation process requires no additional glue, avoiding bristle loss problems caused by glue aging, yellowing, or hydrolysis, thereby extending the toothbrush's lifespan. It should be noted that when the rigid deformable part 2 is made of plastic, the melting point of the hot-melt part 23 is lower than that of the rigid deformable part 2 to ensure the structural integrity of the rigid deformable part 2 and prevent the rigid deformable part 2 from melting simultaneously when the hot-melt part 23 melts upon heating.

[0052] As an optional embodiment of this solution, in order to enhance the deformation capability of the deformable part 2, such as... Figure 6As shown, the brush head frame 1 also has a partition 13 located on one side of the deformable part 2. The partition 13, the brush head frame 1, and the deformable part 2 enclose a clearance cavity. In this embodiment, along the thickness direction of the brush head frame 1, the deformable part 2, the clearance cavity, and the partition 13 are distributed sequentially from the proximal tooth side 11 to the distal tooth side 12 on the inner side of the brush head frame 1. The clearance cavity provides clearance for the concave deformation of the deformable part 2, ensuring that the deformable part 2 has sufficient deformation space, thereby improving the concave deformation capability of the deformable part 2, enhancing the gathering effect of the cleaning part 3, and thus improving the cleaning power of the toothbrush. Secondly, by setting the clearance cavity, the amount of material used in the brush head frame 1 is reduced, which is conducive to achieving a lightweight toothbrush and improving hand comfort. In addition, in the actual production process, the clearance cavity can be directly formed by adjusting the distance between the partition 13 and the deformable part 2 without additional assembly steps, which helps to shorten the production process and improve the production efficiency of the toothbrush.

[0053] As another optional embodiment of this solution, the brush head frame 1 is further provided with a wrapping part 15 located on one side of the partition 13. The wrapping part 15 is arranged facing the outside of the toothbrush to cover the partition 13, thereby improving the aesthetics of the toothbrush.

[0054] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An elastic gum-protecting toothbrush, characterized in that, The brush head includes a brush head frame (1), a deformation part (2) disposed on the brush head frame (1), and a cleaning part (3) disposed on the deformation part (2). The cleaning part (3) includes a plurality of bristle bundles (31), each of the bristle bundles being arranged on the deformation part. The deformation part (2) has an initial state and a brushing state that are protruding and recessed relative to the brush head frame (1). Each bristle bundle (31) has a diverging shape and a converging shape that correspond to the initial state and the brushing state of the deformation part (2), respectively.

2. The elastic gum-protecting toothbrush as described in claim 1, characterized in that, The deformable part (2) is made of a soft material capable of elastic deformation.

3. The elastic gum-protecting toothbrush as described in claim 2, characterized in that, Each of the bristle bundles (31) and the deformable part (2) are integrally formed.

4. The elastic gum-protecting toothbrush as described in claim 2, characterized in that, The soft material capable of elastic deformation includes at least one of TPE, TPU, and silicone, and the Shore hardness of the deformable part (2) is greater than 90A.

5. The elastic gum-protecting toothbrush as described in claim 2, characterized in that, The brush head frame (1) has a proximal side (11) and a distal side (12) opposite to each other, and the deformable part (2) extends from the proximal side (11) toward the distal side (12).

6. The elastic gum-protecting toothbrush as described in claim 1, characterized in that, The deformable part (2) is made of a hard material capable of elastic deformation, which includes at least one of metal and plastic materials.

7. The elastic gum-protecting toothbrush as described in claim 6, characterized in that, The deformable part (2) is provided with a plurality of hair-planting holes (22) arranged in a row, and each of the bristle bundles (31) is provided in each of the hair-planting holes (22) in a corresponding manner.

8. The elastic gum-protecting toothbrush as described in claim 7, characterized in that, A heat-melting part (23) is provided on the inner and / or outer side of any of the hair implantation holes (22). The heat-melting part (23) is made of plastic and is used to heat-melt the bristle bundle (31) in the hair implantation hole (22).

9. The flexible gum-protecting toothbrush according to any one of claims 1 to 4, 6 to 8, characterized in that, The brush head frame (1) is further provided with a partition (13) located on one side of the deformable part (2), and the partition (13), the brush head frame (1) and the deformable part (2) are arranged to form a hollow cavity (14).

10. The elastic gum-protecting toothbrush as described in claim 9, characterized in that, The brush head frame (1) is also provided with a wrapping part (15) located on one side of the partition (13), and the partition (13) is located between the hollow cavity (14) and the wrapping part (15).

Images