A gum shield toothbrush

Abstract

This utility model relates to the technical field of toothbrushes, and more particularly to a gum-protecting toothbrush, comprising a toothbrush body and a deformable limiting structure disposed on the toothbrush body. The toothbrush body includes an upper section and a lower section connected together. The deformable limiting structure is located between the upper and lower sections, and the upper and lower sections change relative position through the deformable limiting structure. The deformable limiting structure includes a deformable part disposed on the toothbrush body and a relief groove inclinedly disposed in the deformable part. The relief groove has a limiting part facing the upper section of the toothbrush. The deformable part allows the upper section of the toothbrush to elastically bend and deform towards the lower section under force, preventing excessive force from brushing and causing gum damage, thus achieving the purpose of gum protection. The narrowing of the relief groove ensures the bending deformation of the deformable part, and the limiting part restricts the bending deformation range of the upper section of the toothbrush, preventing the toothbrush body from excessively bending and deforming and failing to spring back to its original position, which helps to extend the service life of the toothbrush.

Description

Technical Field

[0001] This utility model relates to the technical field of toothbrushes, and more particularly to a gum-protecting toothbrush. Background Technology

[0002] Traditional toothbrushes typically use a rigid frame made of high-hardness plastic. When brushing, the toothbrush is usually subjected to various dynamic forces. The pressure from the toothbrush head on the teeth generates a reaction force on the toothbrush. At this time, the rigid toothbrush cannot buffer the force through deformation. Users often find it difficult to accurately control the force when brushing, causing the impact force of the bristles or brush head on the gums to be directly transmitted to the gum mucosa. Especially when brushing too hard or at an improper angle (such as brushing horizontally), it can easily cause mechanical scratches on the gum margin and lead to gum bleeding.

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

[0004] This invention addresses the problem that rigid toothbrushes, as mentioned above, cannot buffer force through deformation, and users often find it difficult to precisely control the force when brushing their teeth. Excessive brushing force or incorrect angle can easily cause gum bleeding. This invention proposes a gum-protecting toothbrush.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A gum-protecting toothbrush, comprising: The toothbrush body includes an upper section and a lower section of the toothbrush connected together; A deformable limiting structure is provided on the toothbrush body and located between the upper section and the lower section of the toothbrush. The upper section and the lower section of the toothbrush change relative to each other through the deformable limiting structure. The deformable limiting structure includes a deformable part provided on the toothbrush body and a relief groove inclinedly provided in the deformable part. The relief groove is provided with a limiting part facing the upper section of the toothbrush.

[0006] As described above, in a gum-protecting toothbrush, the deformable part includes an opening on the toothbrush body and a support part inside the opening. The support part is used to support the upper section and the lower section of the toothbrush to return to their initial positions, and the clearance groove is inclinedly disposed on the support part.

[0007] As described above, in a gum-protecting toothbrush, the support portion has an end face facing the outside of the toothbrush body, and the clearance groove is inclined from the end face toward the lower section of the toothbrush.

[0008] As described above, the toothbrush for protecting gums has a first sidewall, a second sidewall opposite to the first sidewall, and a third sidewall located between the first and second sidewalls on the outer side of the relief groove. The first sidewall is close to the upper section of the toothbrush, and the second sidewall is close to the lower section of the toothbrush. The limiting part is provided on the second sidewall.

[0009] In the gum-protecting toothbrush described above, the first sidewall and the third sidewall are connected by a first arc-shaped connecting segment, and the second sidewall and the third sidewall are connected by a second arc-shaped connecting segment; or, the third sidewall is an arc-shaped wall, and the first sidewall and the second sidewall are respectively connected to the two ends of the third sidewall.

[0010] As described above, in a gum-protecting toothbrush, the width of the relief groove gradually increases from its bottom toward its opening, and there is a preset angle between the two opposite sidewalls inside the relief groove, the preset angle being 4 to 8°.

[0011] As described above, in a gum-protecting toothbrush, the relief groove has a groove width dimension W, which is 0.4 to 0.8 mm.

[0012] In the gum-protecting toothbrush described above, the relief groove has a depth dimension H, which is 1 to 2 mm.

[0013] The gum-protecting toothbrush described above further includes a buffer airbag disposed on one side of the deformable limiting structure. The buffer airbag is used to provide resistance to the relative positional changes between the upper and lower sections of the toothbrush. The buffer airbag is mounted on the deformable part; or, the buffer airbag is integrally formed with the toothbrush body.

[0014] The gum-protecting toothbrush described above further includes a hollow cavity disposed between the buffer airbag and the deformable part, and the relief groove communicates with the hollow cavity.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a gum-protecting toothbrush. The deformable section allows the upper part of the toothbrush to elastically bend and deform towards the lower part of the toothbrush in a direction away from the body, in response to the reaction force from the teeth. This helps to buffer the pressure exerted by the toothbrush head on the teeth, gums, and other soft and hard tissues of the oral cavity, preventing excessive force during brushing and thus protecting the gums. The positioning groove ensures the bending deformation of the deformable section. During the bending process of the toothbrush body, the opening of the positioning groove narrows, and the limiting part restricts the bending deformation range of the upper part of the toothbrush, preventing excessive bending deformation that could lead to failure to spring back to its original position. This ensures normal use of the toothbrush and helps extend its service life.

[0016] 2. The upper part of the toothbrush can spring back to its initial position through the deformation section, which helps to increase the cleaning pressure of the toothbrush on the teeth, while ensuring that the toothbrush body can return to its initial position.

[0017] 3. The relief groove is inclined on the deformable part. When the toothbrush body undergoes elastic bending deformation, it can disperse the stress on the toothbrush body and reduce the stress concentration in one direction. This improves the bending resistance of the toothbrush body to a certain extent, avoids excessive deformation and damage to the toothbrush body when the user applies too much force, and improves the stability of the toothbrush body when it repeatedly bends and rebounds.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a side view of the gum-protecting toothbrush of this utility model; Figure 2 This is a schematic diagram of the back side of the gum-protecting toothbrush of this utility model; Figure 3 This is a schematic diagram of one embodiment of the deformable limiting structure of this utility model; Figure 4 This is an enlarged schematic diagram of one embodiment of the clearance groove of this utility model; Figure 5 for Figure 4 A magnified view of a portion of the image; Figure 6 This is a perspective view of another embodiment of the gum-protecting toothbrush of the present invention; Figure 7 This is an exploded view of another embodiment of the gum-protecting toothbrush of this utility model; Figure 8 This is a flowchart of the flexural load test for the gum-protecting toothbrush of this utility model. Figure 9 This is a schematic diagram of the flexural load test of the gum-protecting toothbrush of this utility model. Figure 10 This is a schematic diagram of the force points of the toothbrush during the flexural load test of the gum-protecting toothbrush of this utility model. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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 those features. 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. If 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.

[0023] Example 1: Figures 1 to 5 An embodiment of the gum-protecting toothbrush of this utility model is shown. The gum-protecting toothbrush includes a toothbrush body 1 and a deformable limiting structure 2 disposed on the toothbrush body 1. The toothbrush body 1 includes an upper toothbrush section 11 and a lower toothbrush section 12 connected to each other. The deformable limiting structure 2 is located between the upper toothbrush section 11 and the lower toothbrush section 12, and the upper toothbrush section 11 and the lower toothbrush section 12 change relative positions through the deformable limiting structure 2. The deformable limiting structure 2 includes a deformable part 21 disposed on the toothbrush body 1 and a relief groove 22 inclinedly disposed in the deformable part 21. The relief groove 22 is provided with a limiting part 221 facing the upper toothbrush section 11.

[0024] In this invention, the upper section 11 of the toothbrush is provided with a brush head 111 at one end away from the lower section 12. The lower section 12 is for the user to hold. When brushing, the user's hand can hold the deformable limiting structure 2 on one side. Through the deformable part 21, the upper section 11 of the toothbrush can be elastically bent and deformed towards the lower section 12 in a direction away from the human body to a certain extent under the reaction force of the teeth. This helps to buffer the pressure of the toothbrush head on the teeth, gums, and other soft and hard tissues of the oral cavity, preventing excessive force from brushing and causing gum damage, thus achieving the purpose of gum protection with the toothbrush. The groove 22 ensures the bending deformation of the deformable part 21. During the bending process of the toothbrush body 1, the opening of the groove 22 narrows, and the bending deformation range of the upper section 11 of the toothbrush is limited by the limiting part 221, so as to avoid the toothbrush body 1 from being excessively bent and deformed and unable to spring back to its original position, thus ensuring the normal use of the toothbrush and extending its service life. In addition, the upper section 11 of the toothbrush can spring back to its initial position through the deformable part 21, which helps to increase the cleaning pressure of the toothbrush on the teeth, while ensuring that the toothbrush body 1 can return to its initial position.

[0025] Furthermore, the relief groove 22 is inclined on the deformable part 21. When the toothbrush body 1 undergoes elastic bending deformation, it can disperse the stress on the toothbrush body 1 and reduce the stress concentration in one direction, thereby improving the bending resistance of the toothbrush body 1 to a certain extent. This prevents the toothbrush body 1 from being damaged due to excessive deformation when the user applies excessive force, and also improves the stability of the toothbrush when repeatedly bending and rebounding. In addition, the limiting part 221 faces the upper section 11 of the toothbrush. During the bending deformation of the toothbrush body 1, the limiting part 221 is more likely to abut against the corresponding relief groove 22 wall, further precisely limiting the bending deformation range of the toothbrush body 1. This ensures that the toothbrush body 1 undergoes elastic bending deformation to a certain extent to achieve the purpose of gum protection and tooth cleaning, while also preventing the toothbrush body 1 from being damaged due to excessive bending and inability to rebound. This further optimizes the user's brushing experience and the cleaning effect of the toothbrush.

[0026] Figure 3An optional embodiment of the deformable portion 21 is shown. The deformable portion 21 includes an opening 211 provided on the toothbrush body 1 and a support portion 212 provided in the opening 211. The support portion 212 is used to support the upper section 11 and the lower section 12 of the toothbrush to return to their initial positions. The clearance groove 22 is inclinedly provided on the support portion 212. In this embodiment, the toothbrush body 1 has a pressing side 101 and a back side 102 on two opposite sides. When brushing teeth, the pressing side 101 faces the human body, and the back side 102 faces away from the human body. The opening 211 is open on the toothbrush body 1 towards the back side 102. The two opposite sidewalls inside the opening 211 are connected to the upper section 11 and the lower section 12 of the toothbrush, respectively. The support part 212 extends from the bottom of the opening 211 toward the back side 102 to enhance the structural strength of the toothbrush body 1. The support part 212 is connected between the upper section 11 and the lower section 12 of the toothbrush. During brushing, the support part 212 can support the upper section 11 of the toothbrush to rebound and return to its initial position relative to the lower section 12, thereby ensuring the cleaning effect of the toothbrush and preventing the toothbrush body 1 from being excessively bent and deformed.

[0027] Optionally, the opening 211 can be a V-shaped opening or a U-shaped opening. During brushing, the opening 211 narrows so that the upper section 11 of the toothbrush bends and deforms toward the lower section 12 of the toothbrush. At the same time, the opening of the relief groove 22 narrows and the deformation degree of the deformable part 21 is limited by the limiting part 221.

[0028] Optionally, the opening 211 is provided with a set of the support portion 212 and the relief groove 22, and the set of support portion 212 and relief groove 22 is located in the middle position of the opening 211; alternatively, the opening 211 is provided with two sets of the support portion 212 and the relief groove 22, and the two sets of support portion 212 and relief groove 22 are symmetrically arranged in the opening 211, so as to ensure the force balance of the deformable portion 21, thereby optimizing the bending deformation and springback reset of the toothbrush body 1.

[0029] Figure 4 and Figure 5 Another optional embodiment of the deformable portion 21 is shown. To further optimize the elastic bending deformation of the toothbrush body 1, the support portion 212 is provided with an end face 2121 facing the outside of the toothbrush body 1. The clearance groove 22 is inclined from the end face 2121 toward the lower section 12 of the toothbrush. Specifically, the height of the support portion 212 is less than the depth of the opening 211 to ensure that the toothbrush body 1 can bend through the deformable portion 21. The end face 2121 of the support portion 212 faces the back side 102 of the toothbrush body 1. Figure 5As shown, the relief groove 22 is recessed from the end face 2121 along its inclined direction, wherein the inclined direction of the relief groove 22 has a preset angle Q1 with respect to the vertical direction.

[0030] Optionally, the toothbrush body 1 and the deformation limiting structure 2 are integrally formed to improve the overall structural strength of the toothbrush body 1, enabling it to adapt to repeated bending and rebound forces, thereby extending its service life. Furthermore, the toothbrush body 1 can be made of a rigid material with a certain degree of elasticity, wherein the rigid material includes at least one of TPE and PP, to ensure the rebound and reset of the toothbrush body 1.

[0031] Furthermore, Figure 5 An optional embodiment of the clearance groove 22 is shown. The clearance groove 22 has a first sidewall 222 on its outer side, a second sidewall 223 opposite to the first sidewall 222, and a third sidewall 224 between the first sidewall 222 and the second sidewall 223. The first sidewall 222 is close to the upper section 11 of the toothbrush, and the second sidewall 223 is close to the lower section 12 of the toothbrush. The limiting part 221 is provided on the second sidewall 223. In this embodiment, the clearance groove 22 can be set as a U-shaped groove, which can adapt to the elastic bending deformation characteristics of the toothbrush body 1 and ensure the stability of the toothbrush body 1. The limiting part 221 can be the entire second sidewall 223, or the limiting part 221 can be the upper part of the second sidewall 223, or the limiting part 221 can be a limiting structure provided near the top of the second sidewall 223.

[0032] Optionally, the first sidewall 222 and the third sidewall 224 are connected by a first arc-shaped connecting segment 225, and the second sidewall 223 and the third sidewall 224 are connected by a second arc-shaped connecting segment 226, that is, the third sidewall 224 can be set as a straight wall; or, the third sidewall 224 can be set as an arc-shaped wall, with the first sidewall 222 and the second sidewall 223 respectively connected to both ends of the third sidewall 224. The relief groove 22 has at least a portion of its inner wall set as an arc-shaped wall, which further optimizes the internal structure of the relief groove 22, can disperse the force on the inner wall of the relief groove 22, reduce the local stress concentration of the support part 212, and thus optimize the elastic bending deformation performance of the toothbrush body 1. At the same time, by improving the structure of the relief groove 22, the rebound and recovery performance of the toothbrush body 1 can be further improved.

[0033] Figure 5Another optional embodiment of the relief groove 22 is shown. The groove width of the relief groove 22 gradually increases from its bottom to its opening. There is a preset angle between the two opposite sidewalls inside the relief groove 22, and the preset angle is 4 to 8°. Specifically, the third sidewall 224 forms the bottom of the relief groove 22. The groove width of the relief groove 22 is the distance between the first sidewall 222 and the second sidewall 223. There is a preset angle Q2 between the first sidewall 222 and the second sidewall 223, and the preset angle Q2 is 4 to 8°, which helps to improve the bending deformation performance of the toothbrush body 1 and ensures that the toothbrush can achieve its gum protection purpose.

[0034] Figure 5 Another alternative embodiment of the relief groove 22 is shown, the relief groove 22 having a groove width dimension W, the groove width dimension W being 0.4 to 0.8 mm.

[0035] Figure 5 Another alternative embodiment of the relief groove 22 is shown, wherein the relief groove 22 has a depth dimension H, which is 1 to 2 mm.

[0036] In actual brushing, if the toothbrush body 1 is bent and deformed too much, the cleaning power of the toothbrush on the teeth will be reduced. If the toothbrush body 1 is not easily deformed by external force, it will not achieve the purpose of protecting gums. Therefore, in order to balance the user's brushing experience and the cleaning effect of the toothbrush, the deformation limiting structure 2 needs to be adjusted in the production and design process of the gum-protecting toothbrush. Based on this, the size setting of the relief groove 22 is particularly important. The groove width W and depth H of the relief groove 22 are important factors in adjusting the degree of elastic deformation of the deformable part 21. The depth H of the relief groove 22 determines the ease with which the deformable part 21 undergoes elastic deformation, and the groove width W of the relief groove 22 determines the degree of bending deformation of the deformable part 21.

[0037] By setting the groove width W of the relief groove 22 in this embodiment to 0.4-0.8mm and the depth H to 1-2mm, when the user applies a certain pressure to the toothbrush, the bending deformation ability of the toothbrush body 1 can be improved, the gum protection effect of the toothbrush can be optimized, and the rebound and reset ability of the toothbrush body 1 can be guaranteed, so as to extend the service life of the toothbrush and facilitate long-term use by the user.

[0038] To verify the aforementioned beneficial effects, a toothbrush flexural load test (preset pressure value 2N, preset descent speed 20mm / min) was conducted on a gum-protecting toothbrush with deformation limiting structure 2 and a regular toothbrush, and the collected data proved that: by improving the existing toothbrush, the deformation limiting structure 2 of the gum-protecting toothbrush of this invention can simultaneously improve the toothbrush's bending deformation ability and rebound recovery ability, thus extending the toothbrush's service life.

[0039] Figures 8 to 10 A method for testing the flexural load of a toothbrush is shown, which specifically includes the following steps: S1. Fix the toothbrush by fixing it on a horizontally movable test platform; S2. Set the force point so that the force point B of the toothbrush is located directly below the force application module 6 of the tensile testing machine; S3. Set the zero point so that the force application module 6 descends to the force application point B of the toothbrush at a preset initial speed until the displacement value measured by the tensile testing machine is the preset zero displacement value, and then the displacement value of the tensile testing machine is zeroed. S4. Set parameters: Set the preset pressure value and preset descent speed of the pressure module 6; S5. Obtain the vertical displacement value of the toothbrush force point B. After the pressure module 6 descends to the preset pressure value at the preset descent speed, the maximum displacement value measured by the tensile testing machine is used as the displacement value.

[0040] By obtaining the bending displacement value of the gum-protecting toothbrush through the above steps S1 to S5, it is possible to clearly know whether the bending deformation of the gum-protecting toothbrush can meet the usage requirements, and whether it has a certain degree of bending under force while having favorable support.

[0041] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S1, the toothbrush is horizontally fixed on the test platform, and the clamping position of the tensile testing machine relative to the toothbrush is at the rear end of the deformation limiting structure 2, with the bristle-embedded surface of the toothbrush facing upwards, so that the relief groove 22 faces downwards. The displacement change value of the toothbrush head 111 in the longitudinal direction measured by steps S2 to S5 is the displacement value. Figure 9 As shown, the toothbrush bristles are fixed on the test platform with the bristle side facing upwards.

[0042] Furthermore, as a preferred embodiment of this solution and not a limitation, the clamping position of the tensioning machine on the toothbrush is at 50% ± 2% of the total length of the toothbrush, and the user's gripping position on the toothbrush is on the rear side of the deformation limiting structure 2, and is usually at 50% of the total length of the toothbrush.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the clamping position is preferably set at a position 90-110mm away from the foremost point of the upper section 11 of the toothbrush, wherein the clamping position is preferably 100mm away from the foremost point of the toothbrush 11.

[0044] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S2, the center position of the bristle implantation surface of the toothbrush is set as the toothbrush force point B, that is, the center position of the distance between the foremost and last bristle implantation holes is set as the toothbrush force point B.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S4, the force application module 6 of the tensioning machine presses down at the toothbrush force point B at a preset descent speed. The tensioning machine is equipped with a 10kg sensor, which detects the reverse pressure on the toothbrush force point B until a value equal to the preset pressure value is detected and the tensioning machine stops descending. Subsequently, in step S5, the displacement value of the toothbrush tip vertically is tested.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S4, the preset descent speed of the tensile testing machine force application module is set to 20 mm / min.

[0047] Furthermore, as a preferred embodiment of this solution and not a limitation, under the condition of a preset pressure value of 2N, a gum-protecting toothbrush with deformation limiting structure 2 and a regular toothbrush were used as test subjects for testing, as shown in the table below.

[0048]

[0049] The test data above shows that, under different preset pressure values, the improved gum-protecting toothbrush has a stronger bending and deformation ability than the ordinary toothbrush before the improvement. By setting a deformation limiting structure 2 in the toothbrush body 1, the bending and deformation ability of the toothbrush is improved, so as to ensure that the toothbrush has a good gum-protecting effect. At the same time, the downward displacement of the front end of the gum-protecting toothbrush does not exceed 7mm, which can effectively prevent the gum-protecting toothbrush from being over-deformed and unable to spring back to its original position, thus extending the service life of the toothbrush.

[0050] Based on the above testing method, the preferred embodiment of the dimensions of the relief groove 22 is obtained as follows: When the depth H of the relief groove 22 is set to 1-2 mm and the width W of the groove opening is 0.4-0.8 mm, when a pressure of 2 N is applied to the toothbrush head 111, the measured downward displacement of the toothbrush tip does not exceed 7 mm; where the groove opening width of the relief groove 22 is 0.6 mm, when a force of 2 N is applied to the toothbrush head 111, the downward displacement of the toothbrush tip does not exceed 5 mm. Under these conditions, the brushing experience is optimal, simultaneously meeting the user's gum care and teeth cleaning needs. It should be noted that the toothbrush tip is... Figure 10The toothbrush at the far left.

[0051] Furthermore, as an optional implementation of this solution, the groove width W can be set to 0.4mm, 0.5mm, 0.6mm, 0.7mm or 0.8mm. During the production process, the appropriate clearance groove width can be adjusted according to the overall toothbrush.

[0052] Furthermore, as an optional implementation of this solution, the preset angle Q2 can be set to 4°, 5°, 6°, 7° or 8°, and the preset angle Q2 can be adjusted appropriately according to the slot width W during the production process.

[0053] Furthermore, as a preferred embodiment of this solution, the slot width W is preferably 0.6 mm, and the preset angle Q2 is preferably 6°.

[0054] Example 2: Based on the first embodiment described above, this utility model also provides another embodiment of the gum-protecting toothbrush, such as... Figure 6 As shown, the gum-protecting toothbrush also includes a buffer airbag 3 disposed on one side of the deformable limiting structure 2. The buffer airbag 3 is used to provide resistance to the relative positional changes between the upper section 11 and the lower section 12 of the toothbrush. Specifically, the buffer airbag 3 is located outside the opening 211. The buffer airbag 3 can be configured as an airbag structure with an inflatable chamber inside, or the buffer airbag 3 can be integrally molded from a soft material such as TPE. The buffer airbag 3 is elastic and is disposed on the deformable part 21. The buffer airbag 3 provides resistance to the relative bending deformation of the upper section 11 and the lower section 12 of the toothbrush, and at the same time enhances the elasticity of the upper section 11 and the lower section 12 to rebound and reset, thereby improving the resilience and anti-deformation ability of the toothbrush body 1. Secondly, the opening 211 can be accommodated in the buffer airbag 3 to prevent the user's fingers from entering the opening 211 when holding the toothbrush, thus affecting the bending deformation of the toothbrush body 1, ensuring the bending deformation of the toothbrush and realizing its gum protection performance, and also helping to improve the aesthetics of the toothbrush appearance.

[0055] Furthermore, the buffer airbag 3 is mounted on the deformable part 21, and the buffer airbag 3 is sealed to the deformable part 21; or, the buffer airbag 3 is integrally formed with the toothbrush body 1.

[0056] Example 3: Based on the above embodiment two, Figure 7Another embodiment of the gum-protecting toothbrush is also shown, which further includes a hollow cavity 4 disposed between the buffer airbag 3 and the deformable part 21, and the relief groove 22 communicates with the hollow cavity 4; the hollow cavity 4 can be disposed within the buffer airbag 3, or the hollow cavity 4 can be disposed within the deformable part 21, or the hollow cavity 4 can be formed by the buffer airbag 3 and the toothbrush body 1 enclosing it; the opening 211 communicates with the hollow cavity 4, and the support part 212 is located between the opening 211 and the hollow cavity 4. The hollow cavity 4 can increase the bending deformation space of the deformable part 21, so as to improve the deformation performance and stability of the toothbrush body 1 and further improve the gum-protecting effect of the toothbrush.

[0057] 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. A gum-protecting toothbrush, characterized in that, include: The toothbrush body (1) includes an upper section (11) and a lower section (12) connected to each other. A deformation limiting structure (2) is provided on the toothbrush body (1) and located between the upper section (11) and the lower section (12) of the toothbrush. The upper section (11) and the lower section (12) of the toothbrush are subject to relative positional changes through the deformation limiting structure (2). The deformation limiting structure (2) includes a deformation part (21) provided on the toothbrush body (1) and a relief groove (22) inclinedly provided in the deformation part (21). The relief groove (22) is provided with a limiting part (221) facing the upper section (11) of the toothbrush.

2. The gum-protecting toothbrush as described in claim 1, characterized in that, The deformable part (21) includes an opening (211) on the toothbrush body (1) and a support part (212) in the opening (211). The support part (212) is used to support the upper section (11) and the lower section (12) of the toothbrush to return to their initial positions. The clearance groove (22) is inclinedly disposed on the support part (212).

3. A gum-protecting toothbrush as described in claim 2, characterized in that, The support (212) has an end face (2121) facing the outside of the toothbrush body (1), and the clearance groove (22) is inclined from the end face (2121) toward the lower section (12) of the toothbrush.

4. A gum-protecting toothbrush as described in claim 1, characterized in that, The outer side of the clearance groove (22) is provided with a first sidewall (222), a second sidewall (223) opposite to the first sidewall (222), and a third sidewall (224) between the first sidewall (222) and the second sidewall (223). The first sidewall (222) is close to the upper section (11) of the toothbrush, and the second sidewall (223) is close to the lower section (12) of the toothbrush. The limiting part (221) is provided on the second sidewall (223).

5. A gum-protecting toothbrush as described in claim 4, characterized in that, The first sidewall (222) and the third sidewall (224) are connected by a first arc-shaped connecting segment (225), and the second sidewall (223) and the third sidewall (224) are connected by a second arc-shaped connecting segment (226); or, The third sidewall (224) is an arc-shaped wall, and the first sidewall (222) and the second sidewall (223) are respectively connected to the two ends of the third sidewall (224).

6. A gum-protecting toothbrush as described in claim 1, characterized in that, The width of the relief groove (22) gradually increases from its bottom toward its opening, and there is a preset angle between the two opposite sidewalls inside the relief groove (22), the preset angle being 4 to 8°.

7. A gum-protecting toothbrush as described in claim 1, characterized in that, The clearance groove (22) has a groove width dimension W, which is 0.4 to 0.8 mm.

8. A gum-protecting toothbrush as described in claim 1, characterized in that, The clearance groove (22) has a depth dimension H, which is 1 to 2 mm.

9. A gum-protecting toothbrush as described in any one of claims 1 to 8, characterized in that, It also includes a buffer airbag (3) disposed on one side of the deformation limiting structure (2), the buffer airbag (3) being used to provide resistance to the relative positional change between the upper section (11) and the lower section (12) of the toothbrush; The buffer airbag (3) is mounted on the deformable part (21); or, The buffer airbag (3) is integrally formed with the toothbrush body (1).

10. A gum-protecting toothbrush as described in claim 9, characterized in that, It also includes a hollow cavity (4) located between the buffer airbag (3) and the deformable part (21), and the relief groove (22) is connected to the hollow cavity (4).

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