Toothbrush head and electric toothbrush

Abstract

The embodiment of the utility model discloses a toothbrush head. The toothbrush head comprises a bristle planting plate, a balancing weight, a wrapping piece and a rod body. Wherein the rod body comprises a rod part and a supporting part connected to one end of the rod part; the covering piece is provided with an open containing cavity; at least part of the supporting part, the bristle planting plate and the balancing weight are located in the containing cavity. The bristle planting plate is installed on the supporting part and corresponds to the opening, and the balancing weight is arranged on the side, away from the bristle planting plate, of the supporting part. According to the toothbrush head, the bristle planting plate and the balancing weight are arranged on the two sides of the supporting part respectively, the problem that the load on one side of the supporting part is too large is solved, the anti-bending capacity of the supporting part is improved, and then the stability and durability of the overall structure of the toothbrush head are improved. Meanwhile, the bristle planting plate and the balancing weight are separated through the supporting part, so that water entering the containing cavity from the bristle planting plate cannot make contact with the balancing weight.

Description

Technical Field

[0001] The present application relates to the field of oral cleaning and care, and in particular to a toothbrush head and an electric toothbrush. Background Art

[0002] Electric toothbrushes achieve efficient cleaning through the high-frequency vibration of the toothbrush head. When the bristles touch the teeth, the high-frequency vibration of the toothbrush head will cause the toothbrush head to vibrate strongly. In view of this, the related art adds a counterweight block between the bristle plate and the brush head shell to reduce the vibration. However, the oral environment is complex, especially when it is necessary to penetrate deep into the teeth or difficult-to-reach areas, the brush head shell is prone to bending away from the bristle plate due to excessive load on one side. The counterweight block will aggravate the bending degree, causing inconvenience in use.

[0003] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art. Utility Model Content

[0004] In view of the above problems, the present invention proposes a toothbrush head, which aims to solve the technical problem that the toothbrush head shell is easily bent and causes inconvenience in use.

[0005] To achieve the above-mentioned purpose, the toothbrush head proposed in the present invention includes a bristle planting plate, a counterweight, a covering and a rod body; the rod body includes a rod portion and a support portion connected to one end of the rod portion; a cavity is provided in the covering portion, and an opening is provided on the side wall of the cavity; at least part of the support portion, the bristle planting plate, and the counterweight are located in the cavity; the bristle planting plate is installed on the support portion and is arranged corresponding to the opening, and the counterweight is arranged on the side of the support portion away from the bristle planting plate.

[0006] Furthermore, the counterweight is fixedly connected to the support portion.

[0007] Furthermore, the support portion is provided with a first connection portion toward the counterweight block; and the counterweight block is provided with a second connection portion toward the support portion, adapted to be connected to the first connection portion.

[0008] Furthermore, the support portion is provided with an assembly groove toward the counterweight block, and at least a portion of the counterweight block is embedded in the assembly groove; the bottom wall of the assembly groove is provided with the first connecting portion protruding toward the counterweight block; the counterweight block is provided with the second connecting portion toward the support portion; one of the first connecting portion and the second connecting portion is a protrusion, and the other is a groove.

[0009] Furthermore, the counterweight block extends along the length direction of the rod; the bottom wall of the assembly groove is provided with a plurality of protrusions distributed along the extension direction of the counterweight block; and the counterweight block is provided with a plurality of grooves corresponding one-to-one to the protrusions.

[0010] In one embodiment, the covering member is made of soft rubber, and the covering member is sealed and adheres to the outer peripheral wall of the counterweight block, the supporting portion and the hair implantation plate.

[0011] Furthermore, the rod portion includes a main rod section and a connecting rod section, one end of the connecting rod section is connected to the main rod section, and the other end of the connecting rod section is smoothly connected to the support portion; the cross-sectional area of the connecting rod section is smaller than the cross-sectional area of the main rod section; the covering extends toward the rod portion and is sealed and fitted to the connecting rod section, and the covering and the main rod section have a smooth transition.

[0012] In one embodiment, the support portion is connected to a middle position or a position close to the middle of the end surface of the rod portion.

[0013] In one embodiment, the covering member is transparent; and / or the rod body and the hair implantation plate are transparent; and / or the counterweight is made of stainless steel.

[0014] The present invention further provides an electric toothbrush, comprising the toothbrush head of any one of the above embodiments and a handle of the electric toothbrush, wherein the toothbrush head is connected to the handle of the electric toothbrush.

[0015] The utility model provides a toothbrush head, including a hair-planting plate, a counterweight, a covering, and a rod body. The rod body includes a rod portion and a support portion connected to one end of the rod portion; the covering portion has a cavity with an opening; at least part of the support portion, the hair-planting plate, the counterweight, and the cavity are located; the hair-planting plate is mounted on the support portion and arranged corresponding to the opening, and the counterweight is arranged on the side of the support portion away from the hair-planting plate. The utility model reduces the problem of excessive load on one side of the support portion by arranging the hair-planting plate and the counterweight on both sides of the support portion, improves the bending resistance of the support portion, and thus improves the stability and durability of the overall structure of the toothbrush head. At the same time, the support portion separates the hair-planting plate and the counterweight, so that water entering the cavity from the hair-planting plate cannot contact the counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Shows a structural schematic diagram of an embodiment of a toothbrush head of the present utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the middle toothbrush head from another perspective;

[0019] Figure 3 is Figure 1 the front view of the toothbrush head in

[0020] Figure 4 is Figure 3 the sectional view of the toothbrush head along line IV-IV in

[0021] Figure 5 is Figure 4 the enlarged partial view at A in

[0022] Figure 6 is Figure 1 the exploded view of the toothbrush head in

[0023] Figure 7 is Figure 1 the exploded view of the toothbrush head from another perspective in

[0024] Figure 8 is Figure 7 the structural schematic diagram of the rod body in

[0025] Figure 9 is Figure 8 the sectional view of the rod body along line IX-IX in

[0026] Figure 10 is Figure 9 the enlarged partial view at B in

[0027] Figure 11 is Figure 8 the sectional view of the rod body along line XI-XI in

[0028] Explanation of the reference numerals in the drawings:

[0029] Label Name Label Name Label Name 100 Toothbrush head 31 Opening 412 Link segment 10 Bristle board 32 Cavity 42 Support part 20 Counterweight 40 Rod body 421 First connecting part 21 Second connecting part 41 Rod part 422 Assembly groove 30 Coating part 411 Main rod segment

[0030] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of the technical solutions appears to be mutually contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0034] The present invention provides a toothbrush head. A toothbrush head is the component of an electric toothbrush used to clean teeth and gums. It is typically made of soft nylon bristles and is designed in various shapes and sizes to suit different oral needs and cleaning difficulties. Electric toothbrush head designs can include different bristle layouts, bristle hardness, and bristle materials to ensure effective and comfortable cleaning of tooth surfaces, between teeth, and along the gum line.

[0035] In the embodiment of this utility model, please refer to Figures 1 to 9 The toothbrush head 100 includes a bristle-planting plate 10, a counterweight 20, a covering member 30, and a rod 40. The rod 40 includes a rod portion 41 and a support portion 42 connected to one end of the rod portion 41; a cavity 32 is provided in the covering member 30, and an opening 31 is provided on the side wall of the cavity 32; at least part of the support portion 42, the bristle-planting plate 10, and the counterweight 20 are located in the cavity 32; the bristle-planting plate 10 is mounted on the support portion 42 and is arranged corresponding to the opening 31, and the counterweight 20 is arranged on the side of the support portion 42 away from the bristle-planting plate 10.

[0036] In this embodiment, the bristle plate 10 can also be called a bristle plate. The bristle plate 10 usually has a plurality of small holes for accommodating and fixing the bristles. The bristle plate 10 can be waist-shaped, oval-shaped, etc., which is not limited here.

[0037] The counterweight 20 increases the vibration stability of the toothbrush head 100 and reduces unnecessary shaking of the toothbrush head 100 due to inertia. Furthermore, the counterweight 20 balances the vibration amplitude between the brush head and the handle, distributing the vibration energy more evenly across the toothbrush head 100. This helps reduce vibration at the handle, making it more comfortable for the user to hold. The counterweight 20 can be made of materials such as stainless steel and aluminum alloy.

[0038] On the one hand, the covering 30 is used to accommodate and protect internal components such as the counterweight 20 and the support part 42, and to seal and waterproof the internal components. On the other hand, since the toothbrush head 100 needs to go deep into the oral cavity for cleaning, the covering 30 can also prevent the oral cavity from being scratched by the internal components of the toothbrush head 100.

[0039] The function of the rod body 40 is to be driven by the handle of the electric toothbrush so that the toothbrush head 100 as a whole can achieve high-frequency vibration. The rod body 40 includes a rod portion 41 and a support portion 42 connected to one end of the rod portion 41. The rod body 40 fixes the brush head as a whole to the handle of the electric toothbrush by means of threads or other mechanical connections. The support portion 42 fixes the bristle plate 10 and the counterweight 20. The support portion 42 usually has sufficient strength and stability, and indirectly applies cleaning pressure on the tooth surface. At the same time, the support portion 42 will also indirectly receive the reverse force from the teeth.

[0040] In the related art, the bristle plate 10 and the counterweight 20 are arranged on the same side of the support portion 42. This will cause the load on the support portion 42 to be unbalanced. During the force-bearing process, the force borne by the side of the support portion 42 where the bristle plate 10 and the counterweight 20 are located is much greater than that on the other side, especially when the counterweight 20 accounts for most of the weight. This unbalanced load increases the risk of the support portion 42 bending or breaking. At the same time, the electric toothbrush achieves a cleaning effect through vibration, and the bristle plate 10 and the counterweight 20 will also vibrate accordingly. When the vibration or impact is concentrated on the same side of the support portion 42, it will accelerate the occurrence of its bending or fatigue damage. In addition, as the use time increases, the bristles of the toothbrush and the bristle holes are prone to loosening, resulting in gaps between the two. At this time, moisture can easily penetrate into the cavity 32 and contact the counterweight 20, causing the counterweight 20 to rust. The rusty counterweight 20 may release rust or other pollutants, affecting the hygiene of the toothbrush and thus affecting oral health. Moreover, when the toothbrush head 100 is transparent, the rusty counterweight 20 will also affect the appearance of the toothbrush head 100 .

[0041] In the present embodiment, the hair-planting plate 10 and the counterweight 20 are respectively arranged on the same side of the support portion 42. When the support portion 42 is indirectly subjected to the reverse force from the teeth, one side of the support portion 42 is only subjected to the load from the hair-planting plate 10, and the other side of the support portion 42 can be supported by the counterweight 20 to resist the tendency of the support portion 42 to bend. At the same time, since the support portion 42 is located between the hair-planting plate 10 and the counterweight 20. Even if external moisture can enter the cavity 32 in the present embodiment, the moisture is blocked by the support portion 42 on the side where the hair-planting plate 10 is provided. In this way, external moisture cannot corrode the counterweight 20 and cause the counterweight 20 to rust.

[0042] The present invention provides a toothbrush head 100, comprising a bristle-planting plate 10, a counterweight 20, a covering 30 and a rod body 40. The rod body 40 comprises a rod portion 41 and a support portion 42 connected to one end of the rod portion 41; the covering 30 has a cavity 32 provided with an opening 31; at least part of the support portion 42, the bristle-planting plate 10, the counterweight 20 and the like are located in the cavity 32; the bristle-planting plate 10 is mounted on the support portion 42 and provided corresponding to the opening 31, and the counterweight 20 is provided on the side of the support portion 42 away from the bristle-planting plate 10. The present invention reduces the problem of excessive load on one side of the support portion 42 by arranging the bristle-planting plate 10 and the counterweight 20 on both sides of the support portion 42, thereby improving the bending resistance of the support portion 42 and thereby improving the stability and durability of the overall structure of the toothbrush head 100. At the same time, the support portion 42 separates the hair-planting plate 10 and the counterweight 20 , so that water entering the cavity 32 from the hair-planting plate 10 cannot contact the counterweight 20 .

[0043] For further information, please refer to Figures 3 to 5 , the counterweight 20 is fixedly connected to the support portion 42. Fixed connection includes welding, bonding, bolting, injection molding, etc. If the counterweight 20 is not fixed to the support portion 42, it may move on the surface of the support portion 42 or generate local uneven load. This uneven load will cause stress concentration on the support portion 42 under the action of the load, which can easily cause bending or breaking. By making the counterweight 20 fixedly connected to the support portion 42, the support portion 42 in this embodiment can transfer the load more evenly and reduce the risk of stress concentration.

[0044] Furthermore, the support portion 42 is provided with a first connecting portion 421 facing toward the counterweight 20; the counterweight 20 is provided with a second connecting portion 21 facing toward the support portion 42, which is adapted to connect with the first connecting portion 421. In this embodiment, the fit between the first connecting portion 421 and the second connecting portion 21 enables a precise and tight docking and connection between the support portion 42 and the counterweight 20. This precise fit ensures a stable and reliable connection, reducing problems caused by a loose or mismatched connection.

[0045] Further, please refer to Figures 6 to 10 The support portion 42 is provided with an assembly groove 422 facing the counterweight block 20, and at least a portion of the counterweight block 20 is embedded in the assembly groove 422; the bottom wall of the assembly groove 422 is provided with a first connecting portion 421 protruding toward the counterweight block 20; the counterweight block 20 is provided with a second connecting portion 21 facing the support portion 42; one of the first connecting portion 421 and the second connecting portion 21 is a protrusion, and the other is a groove.

[0046] By embedding at least a part of the counterweight 20 into the assembly groove 422, the structure of the toothbrush head 100 in this embodiment is compact, which is beneficial to the miniaturization of the toothbrush head 100, thus facilitating the toothbrush head 100 to reach every corner of the oral cavity for cleaning. When the support part 42 and the counterweight 20 are connected by injection molding, the grooves or protrusions can facilitate positioning and prevent the parts from shifting or skewing during the injection molding process.

[0047] Further, the counterweight 20 extends along the length direction of the rod part 41 to be in a long strip shape or a strip shape. The bottom wall of the assembly groove 422 is provided with a plurality of protrusions distributed along the extending direction of the counterweight 20, and the counterweight 20 is provided with a plurality of grooves corresponding to the protrusions one by one. In this way, the precise position and positioning of the counterweight 20 in the assembly groove 422 can be ensured, preventing it from moving or falling off during use, enhancing the fixing and stability of the counterweight 20 in the assembly groove 422, and enabling the counterweight 20 to provide continuous and stable support for the support part 42.

[0048] In one embodiment, the covering part 30 is made of soft rubber, and the covering part 30 hermetically fits the outer peripheral walls of the counterweight 20, the support part 42, and the hair implanting plate 10. The soft rubber covering part 30 can effectively seal the joints between the counterweight 20, the support part 42, and the hair implanting plate 10, preventing dust, moisture, or other impurities from entering the cavity 32. At the same time, it can reduce the direct contact between the internal components of the toothbrush head 100 such as the hair implanting plate 10 and the counterweight 20 and the tooth surface, avoiding tooth surface wear caused by misoperation or overuse during brushing.

[0049] Further, please refer to Figures 3 to 5 、 Figures 8 to 11 , the rod part 41 includes a main rod section 411 and a connecting rod section 412. One end of the connecting rod section 412 is connected to the main rod section 411, and the other end of the connecting rod section 412 is smoothly connected to the support part 42; the cross-sectional area of the connecting rod section 412 is smaller than the cross-sectional area of the main rod section 411; the covering part 30 extends towards the rod part 41 and hermetically fits the connecting rod section 412, and the covering part 30 and the main rod section 411 have a smooth transition.

[0050] By making the cross-sectional area of the connecting rod section 412 smaller than the cross-sectional area of the main rod section 411, the connecting rod section 412 in this embodiment minimizes the cross-sectional area while maintaining sufficient strength, thus reducing the weight of the overall rod part 41. In this way, the controllability of the toothbrush head 100 is improved, facilitating the frequent movement or vibration of the toothbrush head 100 in the oral cavity. At the same time, the covering part 30 extends towards the rod part 41 and hermetically fits the connecting rod section 412, and has a smooth transition with the main rod section 411. In this way, not only can the sealing performance of the connection part be ensured, preventing external substances such as dust and moisture from invading and causing the counterweight 20 to rust, but also the risk of friction or damage caused by uneven joints can be reduced.

[0051] In one embodiment, please refer to Figures 8 to 10 , the support part 42 is connected to the middle position or a position close to the middle of the end face of the rod part 41. In this way, the vibration force can be more effectively evenly distributed to the entire structure, reducing local stress concentration, thereby reducing the risk of bending of the support part 42.

[0052] In one embodiment, the covering part 30 is transparent; and / or, the rod body 40 and the hair implanting plate 10 are transparent; and / or, the counterweight 20 is made of stainless steel material.

[0053] In some embodiments, the covering part 30 is transparent. Here, transparency includes translucent and fully transparent, and also includes colored transparency and non-colored transparency. The transparent covering part 30 allows users to clearly see the internal components of the toothbrush head 100, enabling users to more easily check whether there is residual food on the toothbrush head or if cleaning is required. This helps maintain the hygiene of the toothbrush head and facilitates timely cleaning and replacement. At the same time, the transparent covering part 30 can enhance the aesthetic feeling of the toothbrush head 100. In other embodiments, the rod body 40 and the hair implanting plate 10 are also transparent. In this way, users can observe whether there is any stain residue at the connection between the rod body 40 and the handle part of the electric toothbrush and at the connection between the bristles and the hair implanting plate. This makes it convenient for users to determine whether the toothbrush head needs to be cleaned or replaced.

[0054] It should be noted that when the counterweight 20 and the hair implanting part are located on the same side of the support part 42 and the covering part 30 is transparent, after the support part 42 is bent, the bending crease on the support part 42 can be visually seen through the covering part 30. This affects the visual perception of the toothbrush head 100. In this embodiment, however, the counterweight 20 and the hair implanting part are respectively located on both sides of the support part 42, and the counterweight 20 blocks the side surface of the support part 42. Even if the support part 42 is bent, users cannot see the bending crease of the support part 42 through the transparent covering part 30.

[0055] In other embodiments, the counterweight 20 is made of stainless steel. Stainless steel has excellent corrosion resistance, can maintain the smoothness and durability of its surface for a long time in a humid environment, is not prone to breeding bacteria, meets the hygiene requirements, and is suitable for components in contact with the oral cavity. At the same time, the cost of stainless steel material is moderate, and the manufacturing cost can be controlled while ensuring performance.

[0056] The present utility model further provides an electric toothbrush, which includes a handle portion of the electric toothbrush and a toothbrush head 100. The specific structure of the toothbrush head 100 refers to the above-mentioned embodiments. Since this electric toothbrush adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one. Among them, the toothbrush head 100 is connected to the handle portion of the electric toothbrush. The handle portion of the electric toothbrush is the core component of the electric toothbrush, which can provide power and cause the toothbrush head 100 to vibrate at a high frequency.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A toothbrush head, characterized in that, It includes a hair planting plate, a counterweight block, a covering member and a rod body; the rod body includes a rod portion and a support portion connected to one end of the rod portion; A cavity is provided in the covering member, and an opening is provided on a side wall of the cavity; At least part of the support portion, the hair-planting plate, and the counterweight block are located in the cavity; the hair-planting plate is mounted on the support portion and arranged corresponding to the opening, and the counterweight block is arranged on a side of the support portion away from the hair-planting plate.

2. The toothbrush head according to claim 1, wherein, The counterweight is fixedly connected to the support portion.

3. The toothbrush head according to claim 2, wherein, The support portion is provided with a first connection portion facing the counterweight block; the counterweight block is provided with a second connection portion facing the support portion and adapted to be connected to the first connection portion.

4. The toothbrush head according to claim 3, wherein, The support portion is provided with an assembly groove toward the counterweight block, and at least a portion of the counterweight block is embedded in the assembly groove; The bottom wall of the assembly groove is provided with the first connecting portion protruding toward the counterweight block; the counterweight block is provided with the second connecting portion toward the supporting portion; one of the first connecting portion and the second connecting portion is a protrusion, and the other is a groove.

5. The toothbrush head according to claim 4, wherein, The counterweight extends along the length direction of the rod; The bottom wall of the assembly groove is provided with a plurality of protrusions distributed along the extension direction of the counterweight block; the counterweight block is provided with a plurality of grooves corresponding to the protrusions one by one.

6. The toothbrush head according to claim 1, wherein, The covering member is made of soft rubber, and the covering member is sealed and adhered to the outer peripheral wall of the counterweight block, the supporting portion and the hair implanting plate.

7. The toothbrush head according to claim 6, characterized in that, The rod portion includes a main rod section and a connecting rod section, one end of the connecting rod section is connected to the main rod section, and the other end of the connecting rod section is smoothly connected to the support portion; the cross-sectional area of the connecting rod section is smaller than the cross-sectional area of the main rod section; the covering member extends toward the rod portion and is sealed and fitted to the connecting rod section, and the covering member and the main rod section have a smooth transition.

8. The toothbrush head according to claim 1, characterized in that, The support portion is connected to a middle position or a position close to the middle of the end surface of the rod portion.

9. The toothbrush head according to any one of claims 1-8, characterized in that, The covering member is transparent; and / or the rod body and the hair-planting plate are transparent; and / or the counterweight is made of stainless steel.

10. An electric toothbrush, characterized in that, It comprises a toothbrush head according to any one of claims 1 to 9 and a handle portion of an electric toothbrush, wherein the toothbrush head is connected to the handle portion of the electric toothbrush.

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