Toothbrush cleaning head and electric toothbrush

Abstract

The end face, facing the head, of the hair planting base is in lap joint with the end face, facing the first opening, of the head. Namely, only the hair planting base is exposed out of the first opening. Compared with the mode that the bristle planting base and the head are exposed out of the first opening, a splicing seam, exposed out of the first opening, of the bristle planting base and the head is omitted, and the waterproof performance of the toothbrush cleaning head is improved. Meanwhile, the hard connecting piece is arranged in the first assembling groove, so that the toothbrush cleaning head is compact in structure, miniaturization of the toothbrush cleaning head is facilitated, the toothbrush cleaning head can enter an area, which is difficult to reach, of the oral cavity more easily, and a more accurate and thorough cleaning effect is provided. Meanwhile, the flexible wrapping piece wraps the splicing seam of the hard connecting piece and the flocking base and is attached to the peripheral face of the flocking base in a sealed mode. The hidden splicing seam reduces the space for water stain, dust, dirt and bacterium accumulation, and the waterproof performance of the toothbrush cleaning head is improved through sealed attachment of the flexible covering piece and the bristle planting base.

Description

[0001] Priority information

[0002] This application requests the priority and rights of the patent application with patent application number CN202421659257.3 and patent name “Toothbrush Cleaning Head” filed with the State Intellectual Property Office of China on July 12, 2024, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of oral care, and in particular to a toothbrush cleaning head and an electric toothbrush. Background Art

[0004] When users use electric toothbrushes, the inner end of the toothbrush cleaning head is prone to bump against teeth or gums, causing pain or discomfort. In order to cushion this bump, the prior art proposes a technical solution of adding a flexible covering. On the basis of buffering, the waterproof performance of the toothbrush cleaning head is also crucial to the cleaning effect and user experience. However, in the related art, the structure of the toothbrush cleaning head is extremely unreasonable, resulting in poor waterproof effect of the toothbrush cleaning head. The consequence caused by this is that bacteria and mold are easily bred, thus affecting oral health. At the same time, non-waterproof brush heads are easily eroded by water, resulting in aging and damage of the brush head material, shortening the service life of the toothbrush, and increasing the user's replacement frequency and cost.

[0005] The above contents are only used to assist in understanding the technical solutions of the utility model and do not constitute an admission that the above contents are prior art. Utility Model Content

[0006] In view of the above problems, the utility model provides a toothbrush cleaning head, aiming to solve the technical problem of poor waterproof effect of the toothbrush cleaning head.

[0007] To achieve the above-mentioned purpose, the toothbrush cleaning head proposed in the utility model includes a hard connecting part, a flexible covering part and a hair-implanting base, the hard connecting part includes a head and a rod; the flexible covering part at least covers the periphery of the head, and the flexible covering part is provided with a first assembly groove for accommodating the head; the first assembly groove is provided with a first opening; the wall surface of the hair-implanting base facing the head overlaps the end surface of the head facing the first opening; and the hair-implanting base is exposed in the first opening; the side wall of the first assembly groove extends toward the hair-implanting base, covers the joint seam between the head and the hair-implanting base, and is sealed to the outer peripheral surface of the hair-implanting base.

[0008] Furthermore, an ultrasonic line is provided on one of the side surface of the hair transplantation base facing the head and the end surface of the head facing the hair transplantation base, so as to ultrasonically weld the hair transplantation base to the head.

[0009] Furthermore, the hair transplanting base includes a hair transplanting plate and a seat body connected to the hair transplanting plate on the side close to the head; the outer peripheral surface of the hair transplanting plate fits the side wall of the first assembly groove; the side surface of the seat body facing the head and the end surface of the head facing the seat body are ultrasonically welded; the hair transplanting plate includes a bristle stop surface facing the head; the bristle stop surface deviates from the side surface of the seat body facing the head in a direction away from the head.

[0010] Furthermore, the hair implanting plate includes a hair implanting portion and an edge portion, wherein the edge portion is circumferentially connected to the hair implanting portion, and the edge portion is arranged corresponding to the end surface of the head facing the first opening; the hair implanting portion bulges relative to the edge portion in a direction away from the head.

[0011] Furthermore, the side wall of the first assembly groove extends to fit with the outer peripheral surface of the edge portion, and the end surface of the flexible covering member is flush with the end surface of the edge portion facing away from the head portion.

[0012] In one embodiment, the seat body has an annular flange extending toward the head; the head is provided with a second assembly groove toward the seat body; the annular flange is limitedly matched with the inner wall surface of the second assembly groove.

[0013] Furthermore, a third assembly groove is formed on the bottom wall of the second assembly groove; the toothbrush cleaning head further comprises a counterweight block, the counterweight block is adapted to be embedded in the third assembly groove, and the counterweight block is spaced apart from the hair implantation base.

[0014] Furthermore, the flexible covering member is transparent, and at least the head of the hard connecting member is transparent, and the side surface of the counterweight block facing the bottom wall of the third assembly groove has a polishing layer.

[0015] Furthermore, the head and the rod are both transparent.

[0016] In one embodiment, the flexible covering member covers the outer surface of the head and the hair implantation substrate.

[0017] In one embodiment, a first connecting portion is provided on the inner side wall of the first assembly groove; the first connecting portion is spaced apart from the head; and a second connecting portion is provided on the outer peripheral surface of the hair implantation plate;

[0018] One of the first connection portion and the second connection portion is a protrusion, and the other is a groove matched with the protrusion.

[0019] In one embodiment, a convex portion is provided on the side of the head facing away from the hair implantation base, and the convex portion extends along the length direction of the rod; and a concave portion adapted to the convex portion is provided on the flexible covering member.

[0020] In one embodiment, the hair implantation base has a first area and a second area; the first area is provided with a first bristle group, and the second area is provided with a second bristle group; the bristles of the first bristle group and the second bristle group are different.

[0021] Furthermore, the bristles of the first bristle group and the second bristle group have different shapes, diameters, lengths, hardnesses or cross-sectional shapes; and / or the bristle densities or bristle arrangement shapes of the first bristle group and the second bristle group are different.

[0022] Furthermore, the bristles of the first bristle group and the second bristle group include a root and a tip, the root is fixedly connected to the bristle base, and the tip is connected to one end of the root away from the bristle base; the cross-section of the tip of the bristles of the first bristle group and the second bristle group is one semicircular and the other conical.

[0023] In one embodiment, the first zone is connected to the second zone in a circumferential manner, the end of the first bristle group away from the bristle base is formed as a round wire, the end of the second bristle group away from the bristle base is formed as a pointed wire, the height of the first bristle group is greater than the height of the second bristle group; and / or, the first bristle group and the second bristle group are spaced apart; and / or, the number of bristle filaments in the first bristle group is greater than the number of bristle filaments in the second bristle group.

[0024] Furthermore, the bristles of the first bristle group or the second bristle group whose cross section of the tip is semicircular are arranged in a wave shape.

[0025] In this embodiment, the end surface of the hair-implanting base facing the head overlaps the end surface of the head facing the first opening. In other words, in this embodiment, only the hair-implanting base is exposed in the first opening. Compared with the hair-implanting base and the head both exposed in the first opening, this embodiment eliminates the joint seam between the hair-implanting base and the head exposed in the first opening, thereby improving the waterproof performance of the toothbrush cleaning head. At the same time, the hard connector is placed in the first assembly groove, so that the toothbrush cleaning head has a compact structure, which is conducive to miniaturization of the toothbrush cleaning head, so that the toothbrush cleaning head can more easily enter the hard-to-reach areas of the oral cavity, such as the back teeth, the gaps between teeth and the gum edge, thereby providing a more precise and thorough cleaning effect. At the same time, the flexible covering covers the joint seam between the hard connector and the hair-implanting base, and is sealed and fitted to the outer peripheral surface of the hair-implanting base. The hidden joint seam reduces the space for water stains, dust, dirt and bacteria to accumulate, and the sealing fit between the flexible covering and the hair-implanting base improves the waterproof performance of the toothbrush cleaning head.

[0026] To achieve the above-mentioned purpose, the toothbrush cleaning head proposed in the present application includes a hard connecting member, a cleaning brush assembly and a flexible covering member, wherein the hard connecting member includes a head, and a mounting groove is provided on the front of the head; the cleaning brush assembly includes a hair-planting base and a plurality of cleaning brush units provided on the hair-planting base, and the hair-planting base is fixedly provided in the mounting groove;

[0027] The head and the hair transplant base are both made of hard materials, and the hair transplant base is limitedly abutted against the inner wall of the mounting groove; the upper part of the hair transplant base is provided with an upward positive support surface; the back of the head is provided with a plurality of mutually separated and downward back support surfaces;

[0028] The flexible covering member is fixedly wrapped around the outer side of the head, and the flexible covering member also integrally wraps around the side of the hair implantation base.

[0029] Preferably, more than two first supporting protrusions are provided on the back of the head, and a plurality of the back supporting surfaces are exposed from the flexible covering member, and the back supporting surfaces are formed on the lower surface of the first supporting protrusions; and the flexible covering member is provided with avoidance through holes or avoidance grooves for exposing the first supporting protrusions.

[0030] Preferably, a plurality of first support protrusions extend along the length direction of the head and are in the shape of long strips, and a plurality of first support protrusions are arranged at intervals in the width direction of the head; the back support surface is formed on the lower surface of the first support protrusion; and the flexible covering member is provided with a avoidance through hole or avoidance groove for exposing the first support protrusion.

[0031] Preferably, the first supporting protrusion includes a straight portion and a curved portion connected to one end of the straight portion, the straight portion extends in a straight line, and the curved portion is bent relative to the straight portion.

[0032] Preferably, there are two first supporting protrusions, each of which includes two curved portions, and the two curved portions are connected to two ends of the corresponding straight portion;

[0033] Among the two first supporting protrusions, the two bent portions of one of the first supporting protrusions are bent in a direction approaching the other first supporting protrusion.

[0034] Preferably, the minimum distance between two of the first supporting protrusions is greater than or equal to 2 mm.

[0035] Preferably, a plurality of the first supporting protrusions are distributed in a dotted manner on the back of the head.

[0036] Preferably, the front supporting surface is exposed from the flexible covering member.

[0037] Preferably, a second supporting protrusion is provided on the front side of the hair implantation base, and the top surface of the second supporting protrusion forms the positive supporting surface; and the front side of the flexible covering member is lower than the top surface of the second supporting protrusion.

[0038] Preferably, the second supporting protrusion is cylindrical and is disposed surrounding the cleaning unit.

[0039] Preferably, two second supporting protrusions are provided, and the two second supporting protrusions are spaced apart in the length direction of the head.

[0040] Preferably, the front side of the hair implantation base includes a fixed area and an edge area arranged outside the fixed area, and the plurality of cleaning units are fixed in the fixed area; the second support protrusion extends along the entire fixed area, and the second support protrusion deviates outward from the fixed area and inward from the side of the hair implantation base.

[0041] Preferably, the mounting groove has a side support surface and a bottom support surface; the hair transplant base is in limited contact with the side support surface and the bottom support surface; of the two joint surfaces between the hair transplant base and the flexible covering part, one joint surface is provided with a limiting flange, and the other is provided with a limiting groove adapted to the limiting flange.

[0042] Preferably, a counterweight groove is provided on the bottom wall surface of the mounting groove, and a buckle groove is provided on the side wall surface of the counterweight groove extending to below the bottom supporting surface; the toothbrush cleaning head also includes a counterweight block fixedly embedded in the counterweight groove, and the edge of the counterweight block fills the buckle groove.

[0043] Preferably, the hard connector also includes a rod connected to the head, an annular recess is provided at the connection between the rod and the head, the flexible covering also fills the annular recess, and the outer surface of the flexible covering smoothly transitions with the outer surface of the rod.

[0044] The present application also proposes an electric toothbrush, comprising a main unit and a toothbrush cleaning head connected to an output shaft of the main unit, wherein the toothbrush cleaning head is the toothbrush cleaning head as described above.

[0045] The toothbrush cleaning head of the present application wraps the head of the hard connector and the hair-planting base in one piece through a flexible covering. Therefore, the hidden joint reduces the space for water stains, dust, dirt and bacteria to accumulate, and the sealing fit between the flexible covering and the hair-planting base improves the waterproof performance of the toothbrush cleaning head. In addition, the flexible covering is injection molded by a common flow channel, so the mold for injection molding the flexible covering is simple, and thus the manufacturing cost is low. The injection mold can clamp the toothbrush cleaning head and the hair-planting base by respectively abutting against the front support surface of the hair-planting base and the back support surface on the hard connector, and the hair-planting base is limitedly abutted against the mounting groove on the hard connector. Therefore, in the process of molding the flexible covering, the hair-planting base can be well supported, so that the installation accuracy of the hair-planting base can be better guaranteed, and then the spatial position accuracy of the cleaning unit can be guaranteed. Furthermore, the area of ​​the back support surface required for stable support during injection molding is relatively small, so the flexible covering can wrap the head to a greater extent, thereby making the cushioning protection of the toothbrush cleaning head of the utility model more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces 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.

[0047] Figure 1 A schematic structural diagram of a first embodiment of a toothbrush cleaning head of the utility model is shown;

[0048] Figure 2 for Figure 1 Exploded view of the cleaning head of the toothbrush;

[0049] Figure 3 for Figure 1 An exploded view of the toothbrush cleaning head in another perspective;

[0050] Figure 4 for Figure 1 Front view of the cleaning head of the medium toothbrush;

[0051] Figure 5 for Figure 4 Sectional view along line VV;

[0052] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0053] Figure 7 for Figure 4 Cross-sectional view along line VII-VII.

[0054] Figure 8It is a schematic diagram of the three-dimensional structure of the second embodiment of the toothbrush cleaning head of the utility model;

[0055] Fig. 9 for Figure 8 A schematic diagram of the three-dimensional structure of the middle toothbrush cleaning head from another angle;

[0056] Fig.10 for Figure 8 Schematic diagram of the exploded structure of the toothbrush cleaning head;

[0057] Fig.11 for Fig.10 An enlarged structural diagram of the middle hair implantation base;

[0058] Fig.12 for Figure 8 A schematic diagram of the exploded structure of the middle toothbrush cleaning head at another angle;

[0059] Fig.13 for Figure 8 A schematic diagram of the rear view structure of the middle toothbrush cleaning head;

[0060] Fig.14 for Fig.13 A schematic diagram of the cross-sectional structure along line XIV-XIV;

[0061] Fig.15 for Fig.14 A schematic diagram of the local enlarged structure at B in the middle;

[0062] Fig.16 for Fig.13 A schematic diagram of the cross-sectional structure along line XIV-XIV;

[0063] Fig.17 It is a three-dimensional structural schematic diagram of the third embodiment of the toothbrush cleaning head of the utility model;

[0064] Fig.18 for Fig.17 A schematic diagram of the local enlarged structure at C in the middle;

[0065] Fig.19 for Fig.17 A schematic diagram of the three-dimensional structure of the middle toothbrush cleaning head from another angle;

[0066] Fig. 20 for Fig.17 A schematic diagram of the partial structure of the longitudinal section of the middle toothbrush cleaning head along the length direction;

[0067] Fig.21 for Fig.17 Schematic diagram of the transverse cross-sectional structure of the middle toothbrush cleaning head along the width direction.

[0068] Description of Figure Numbers:

[0069] First embodiment:

[0070] Label name Label name Label name 100 Toothbrush cleaning head 12 Rod 31 Hair grafting board 10 Hard connector 20 Flexible covering 311 Hair transplantation department 11 head 21 First assembly slot 312 Edge 111 convex part 221 First exposure 32 base body 1111 gap 222 First connection part 321 Annular flange 112 Second mounting slot 30 Hair transplant base 40 Counterweight 1121 The third assembly slot 313 Brush stop surface 314 Positioning column

[0071] The second and third embodiments:

[0072]

[0073]

[0074] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0076] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), 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.

[0077] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0078] The utility model provides a toothbrush cleaning head. The brush head of an electric toothbrush is a component connected to a motor and driven by the motor to rotate or vibrate to clean teeth and oral cavity.

[0079] In the first embodiment of the present utility model, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 The toothbrush cleaning head 100 includes: a hard connector 10, a flexible covering member 20 and a hair-implanting base 30. The hard connector 10 includes a head 11 and a rod 12; the flexible covering member 20 at least covers the periphery of the head 11, and the flexible covering member 20 is provided with a first assembly groove 21 for accommodating the head 11; the first assembly groove 21 is provided with a first opening 221; the wall surface of the hair-implanting base 30 facing the head 11 overlaps the end surface of the head 11 facing the first opening 221; and the hair-implanting base 30 is exposed in the first opening 221; the side wall of the first assembly groove 21 extends toward the hair-implanting base 30, covers the joint seam between the head 11 and the hair-implanting base 30, and is sealed and attached to the outer peripheral surface of the hair-implanting base 30.

[0080] In this embodiment, the hard connector 10 plays a supporting and connecting role. The hard connector 10 includes a head 11 and a rod 12. The head 11 is used to connect the flexible covering 20 and the hair implantation base 30; the rod 12 is used to plug with the motor shaft. The hard connector 10 is usually made of plastic, including but not limited to polypropylene (PP) and polyethylene (PE).

[0081] On the one hand, the flexible covering 20 can be used for waterproofing. It prevents moisture and water stains from penetrating into the interior of the toothbrush cleaning head 100, protects the internal electronics or the implanted hair part 311, and extends the service life of the toothbrush head. On the other hand, the flexible covering 20 is used to protect the gums and teeth. Due to the limited space in the oral cavity, when the user switches the brushing angle of the toothbrush cleaning head 100 in the oral cavity, it is inevitable to touch the gums or teeth, causing local stinging. The flexible covering 20 can protect the gums and tooth surfaces from direct stimulation and wear, reducing the discomfort that may be caused when brushing. The flexible covering 20 is usually made of materials with good flexibility and wear resistance, including but not limited to thermoplastic elastomers (TPE), such as polypropylene (PP), polyvinyl chloride (PVC), rubber or silicone.

[0082] The main function of the hair-planting base 30 is to firmly fix the bristles on the brush head to ensure that the bristles will not loosen or fall off, thereby ensuring the service life and effect of the toothbrush. At the same time, the hair-planting base 30 provides a stable support platform for the bristles, so that the bristles can evenly distribute pressure and force when in use, and more effectively clean the tooth surface and gum margin.

[0083] In this embodiment, the wall surface of the hair implantation base 30 facing the head 11 overlaps the end surface of the head 11 facing the first opening 221. The end surface of the head 11 facing the first opening 221 usually refers to the surface that cooperates with the hair implantation base 30 for positioning and directly contacts the hair implantation base 30. Compared with the hair transplanting base 30 and the head 11 exposed in the first opening 221, in the present embodiment, only the hair transplanting base 30 is exposed in the first opening 221, and the splicing seam of the hair transplanting base 30 and the head 11 exposed in the first opening 221 is cancelled. From the production process, a splicing seam is left after the hair transplanting base 30 is connected to the head, and the two are fixed by welding, and the splicing seam is located on the side wall of the hair transplanting base 30 instead of at the end. Therefore, after the welding step, the injection molding step is entered, and soft glue is injected into the welded head 11 and the hair transplanting base 30. The soft glue is coated on the head 11 and the hair transplanting base 30 to form a flexible covering 20. The flexible covering 20 covers the splicing seam inside to prevent the splicing seam from being exposed to the outside. When the user cleans the mouth, moisture is left at the splicing seam position to prevent the formation of colonies over a long period of time, thereby polluting the entire toothbrush cleaning head. Therefore, this method improves the waterproof performance of the toothbrush cleaning head 100. At the same time, the hard connector 10 is placed in the first assembly groove 21, so that the toothbrush cleaning head 100 has a compact structure, which is conducive to the miniaturization of the toothbrush cleaning head 100, so that the toothbrush cleaning head 100 can more easily enter the hard-to-reach areas of the oral cavity, such as the back teeth, the gaps between teeth and the gum margin, thereby providing a more precise and thorough cleaning effect. At the same time, the flexible covering 20 covers the joint between the hard connector 10 and the hair-planting base 30, and is sealed to the outer peripheral surface of the hair-planting base 30. The hidden joint reduces the space for water stains, dust, dirt and bacteria to accumulate, and the sealing fit between the flexible covering 20 and the hair-planting base 30 improves the waterproof performance of the toothbrush cleaning head 100. The sealing and fitting methods include but are not limited to bonding and welding.

[0084] In some embodiments, the flexible covering 20 covers the outer surface of the head 11 and the hair-implanting base 30. The flexible covering 20 can act as a buffer to avoid excessive pressure on the gums when brushing teeth, reducing the risk of gum bleeding and damage. The flexible covering 20 covering the outer surface of the head 11 and the hair-implanting base 30 can adapt to the brushing strength and habits of different users, helping them to clean their teeth in a safer way. For example, when the user cleans the dead corners of the oral cavity or uses too much force, the flexible covering 20 can protect the oral cavity from the impact of the hair-implanting base 30 with greater hardness.

[0085] For further information, please refer to Figure 6, an ultrasonic line is provided on one of the side of the hair transplant base 30 facing the head 11 and the end face of the head 11 facing the hair transplant base 30. In this way, the welding points and welding quality during ultrasonic welding can be better controlled. The ultrasonic line can ensure that the vibration can be evenly transmitted to the hair transplant base 30 and the head 11, and can withstand the influence of high-frequency vibration for a long time without damage. Compared with traditional thermal welding methods (hot plate welding or extrusion welding) and bonding, the amplitude, time and pressure of vibration can be accurately controlled by ultrasonic welding between the hair transplant base 30 and the head 11, thereby ensuring the quality and consistency of welding, and meeting the requirements of welding strength and appearance quality of the small component toothbrush cleaning head 100.

[0086] Assume that the size of the hair-implanting base 30 is consistent. When the hair-implanting base 30 is embedded in the head 11, the notch of the head 11 needs to be set to the size of the hair-implanting base 30. At this time, the size of the head 11 is larger than the size of the hair-implanting base 30, and the size of the flexible covering 20 is based on the size of the head 11. It is worth noting that in this embodiment, the joint seam is set on the side of the head 11, so the structural dimensions of the connection and maintenance of the hair-implanting base 30 and the head 11 can be set to be consistent, and the two are fitted together to form a joint seam located on the side. At this time, the size of the flexible covering 20 is based on the size of the hair-implanting base 30. In other words, compared with the hair-implanting base 30 embedded in the head 11, the size of the entire toothbrush cleaning head 100 in this embodiment is smaller.

[0087] For further information, please refer to Figure 6 The hair implantation base 30 includes a hair implantation plate 31 and a seat body 32 connected to the hair implantation plate 31 on the side close to the head 11. The outer peripheral surface of the hair implantation plate 31 fits the side wall of the first assembly groove 21. The side surface of the seat body 32 facing the head 11 and the end surface of the head 11 facing the seat body 32 are ultrasonically welded. The hair implantation plate 31 includes a bristle stop surface 313 facing the head 11; the bristle stop surface 313 deviates from the side surface of the seat body 32 facing the head 11 in a direction away from the head 11.

[0088] The bristle stop surface 313 refers to the surface on the bristle implanting plate 31 that the roots of the bristles will not exceed. The bristle stop surface 313 is usually also convexly provided with a plurality of positioning posts 314. The positioning posts 314 can play a role in positioning and supporting when the bristles are installed. In this embodiment, the bristle stop surface 313 deviates from the side of the seat body 32 toward the head 11 in the direction away from the head 11, that is, the bristle implanting plate 31 is far away from the welding position. Since ultrasonic welding is achieved by melting the plastic material through the heat generated by high-frequency vibration. When the bristle implanting plate 31 is arranged on the side of the welding position, the bristle implanting plate 31 will hinder the uniform transfer of heat, resulting in uneven temperature distribution in the welding area, thereby affecting the welding quality. At the same time, when the bristle implanting plate 31 is too close to the welding area, it may be damaged by heat, resulting in deformation of the bristle implanting plate 31. In this embodiment, the bristle implanting plate 31 is far away from the welding position. In this way, the welding quality of the seat body 32 and the head 11 can be guaranteed, and the shape and performance of the bristle implanting plate 31 before welding can be maintained after the welding step is completed.

[0089] In one embodiment, please refer to Figure 4 and Figure 7 The hair implanting plate 31 includes a hair implanting portion 311 and an edge portion 312. The hair implanting portion 311 refers to the main part of the hair implanting plate 31, which is designed to implant or fix bristles. The function of the edge portion 312 is to provide additional support and stability. The edge portion 312 is arranged corresponding to the end face of the head 11 facing the first opening 221. This makes it convenient for the clamp to clamp the head 11 during welding to ensure the welding quality. The hair implanting portion 311 bulges relative to the edge portion 312 in a direction away from the head 11. In this way, a step is formed between the hair implanting portion 311 and the edge portion 312. The step facilitates the positioning of the mold, so that the hair implanting plate 31 remains stationary in the mold, thereby improving the assembly efficiency.

[0090] For further information, please refer to Figures 4 to 7 , the side wall of the first assembly groove 21 extends to fit with the outer peripheral surface of the edge portion 312, and the end face of the flexible covering member 20 is flush with the end face of the edge portion 312 facing away from the head 11. In this way, it can not only achieve a sealed fit between the flexible covering member 20 and the hair-implanting plate 31, ensure the waterproof performance of the toothbrush cleaning head 100, but also reasonably control the covering ratio of the flexible covering member 20. Specifically, compared with the situation where the flexible covering member 20 completely covers the hair-implanting plate 31, the flexible covering member 20 in this embodiment only covers the outer peripheral surface of the edge portion 312. In this way, the volume of the cleaning toothbrush head can be smaller, so that the toothbrush cleaning head 100 can be suitable for oral cavity of different sizes. In addition, the smaller toothbrush cleaning head 100 is more flexible and convenient to operate in the oral cavity, can more flexibly enter every corner of the oral cavity and reduce gum damage.

[0091] In one embodiment, please refer to Figures 4 to 6The seat body 32 has an annular flange 321 extending toward the head 11. The head 11 is provided with a second assembly groove 112 toward the seat body 32. The annular flange 321 is limitedly matched with the inner wall surface of the second assembly groove 112.

[0092] In this embodiment, the annular flange 321 and the inner wall surface of the second assembly groove 112 are limited to ensure that the head 11 and the seat body 32 maintain an accurate positional relationship during the welding process, avoid misalignment and deviation, and thus improve the welding accuracy. At the same time, the limited cooperation between the annular flange 321 and the inner wall surface of the second assembly groove 112 also helps to improve the welding strength. Specifically, this limited cooperation can make the welding parts accurately aligned and in close contact, so that the ultrasonic vibration energy can be more effectively transmitted to the welding area, making the welding more uniform and firmly combined.

[0093] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 7 , the toothbrush cleaning head 100 also includes a counterweight 40. The counterweight 40 can help balance the overall weight distribution when the toothbrush cleaning head 100 is in operation, affect the vibration effect of the electric toothbrush, and improve the comfort during use. The counterweight 40 is usually made of metal, metal alloy, plastic, and composite materials. A third assembly groove 1121 is provided on the bottom wall of the second assembly groove 112; the counterweight 40 is adapted to be embedded in the third assembly groove 1121. This makes the cleaning toothbrush head compact, which is conducive to the miniaturization of the cleaning toothbrush head. The counterweight 40 is spaced apart from the hair-planting base 30. High-frequency vibration and heat are generated during ultrasonic welding, which may cause the counterweight 40 to deform. Keeping the counterweight 40 away from welding parts such as the hair-planting base 30 can reduce this risk and ensure that the counterweight 40 is not subjected to unnecessary physical or thermal damage.

[0094] Further, the flexible covering member 20 is transparent, and at least the head 11 of the hard connector 10 is transparent. In this embodiment, transparency includes full transparency and translucent. This allows the user to see the internal structure of the toothbrush cleaning head 100, such as the counterweight 40. It is also convenient for the user to more easily check the use of the brush head and provide information for the user to determine whether the brush head needs to be replaced. This helps to maintain the stability of the oral hygiene effect. The side of the counterweight 40 facing the bottom wall of the third assembly groove 1121 has a polishing layer. The polishing layer gives the counterweight 40 a smooth and shiny appearance, thereby enhancing the visual appeal of the toothbrush cleaning head 100. When the counterweight 40 is made of metal, the polishing layer can also remove the oxide layer and other harmful substances on the surface of the counterweight 40, thereby reducing the corrosion of the metal caused by oxidation. This helps to extend the service life of the counterweight 40. In the hard connector 10, only the head 11 can be transparent, or both the head 11 and the rod 12 can be transparent. When both the head 11 and the rod 12 are transparent, not only the cleanliness of the head 11 can be observed, such as whether there are food residues or dirt; the cleanliness of the rod 12 can also be observed, such as whether there are water stains or toothpaste stains remaining at the connection between the rod 12 and the motor shaft.

[0095] In one embodiment, please refer to Figures 4 to 7 A first connecting portion 222 is provided on the inner side wall of the first assembly groove 21; the first connecting portion 222 is spaced apart from the head 11; a second connecting portion is provided on the outer peripheral surface of the hair implantation plate 31; one of the first connecting portion 222 and the second connecting portion is a protrusion, and the other is a groove adapted to the protrusion.

[0096] During the injection molding process, the protrusions and grooves can increase the contact area between the substrate and the covering material. Increasing the contact area means more contact. This helps to improve the adhesion strength and uniformity and enhance the bonding force of the materials. After the injection molding is completed, the design of the protrusions and grooves forms a locking effect in the mechanical structure, thereby preventing relative movement between the flexible covering 20 and the head 11, ensuring the stability of the sealing fit between the flexible covering 20 and the head 11 during use.

[0097] In one embodiment, please refer to Figure 3 and Figure 7 A convex portion 111 is provided on the side of the head 11 facing away from the hair implantation base 30 , and a groove matching the convex portion 111 is provided on the flexible covering member 20 ; the convex portion 111 extends along the length direction of the rod portion 23 .

[0098] In this embodiment, the protrusion 111 can enhance the structural strength and stability of the head 11. The protrusion 111 extends along the length direction of the rod 12, forming an additional support or connection point on the outer surface of the head 11, helping the head 11 to resist external forces or pressure and reduce the risk of damage caused by stress concentration. At the same time, the protrusion 111 can increase the contact area between the head 11 and the covering material (flexible covering 20) and enhance the physical bonding force between the head 11 and the flexible covering 20. This helps to reduce defects caused by poor adhesion, such as degumming, cracking, blistering, etc. Further, the shape of the protrusion 111 is adapted to the outer contour of the head 11, and a notch 1111 is provided on the protrusion 111. This helps to guide the flow of the covering material so that the covering material can evenly cover the side of the head 11 away from the hair transplant base 30, reducing adhesion defects caused by uneven flow.

[0099] In one embodiment, the hair implantation base 30 has a first area and a second area; the first area is provided with a first bristle group, and the second area is provided with a second bristle group; the bristles of the first bristle group and the second bristle group are different.

[0100] Furthermore, the bristles of the first bristle group and the second bristle group have different shapes, diameters, lengths, hardnesses or cross-sectional shapes; and / or the bristle densities or bristle arrangement shapes of the first bristle group and the second bristle group are different.

[0101] By transplanting hair in different areas, the density, length and hardness of the bristles can be designed according to different areas of the teeth and cleaning needs. For example, for hard-to-clean areas such as the gaps between teeth and the gum line, denser and softer bristles can be designed to more effectively remove plaque and food debris. In addition, transplanting hair in different areas can also optimize the overall layout of the bristles, so that the bristles can better cover the tooth surface when brushing, reduce cleaning blind spots, and thus improve the overall cleaning efficiency.

[0102] Furthermore, the bristles of the first bristle group and the second bristle group include a root and a tip, wherein the root is fixedly connected to the bristle base, and the tip is connected to one end of the root away from the bristle base; the cross-section of the tip of the bristles of the first bristle group and the second bristle group is one semicircular and the other conical. In some embodiments, the cross-section of the tip is semicircular. In this way, the tip can contact the gum edge more gently and reduce discomfort, which is particularly suitable for people with sensitive gums or prone to bleeding. In other embodiments, the tip is conical. In this way, the tip can more easily pass through the gaps between teeth and clean the hard-to-reach areas between teeth, such as the gaps between teeth and the edges of the gum line, so that dental plaque and food debris can be removed more accurately.

[0103] In one embodiment, the first area is connected to the second area in a circumferential manner. The end of the first bristle group away from the bristle base is formed into a round wire. When brushing teeth, the first bristle group is relatively close to the gums, and the round wire design can reduce the stimulation to the gums and improve the comfort. The end of the second bristle group away from the bristle base is formed into a pointed wire, and the height of the first bristle group is greater than that of the second bristle group to ensure that a larger tooth surface is covered when brushing teeth.

[0104] In some embodiments, the first bristle group and the second bristle group are spaced apart from each other, so as to optimize the cleaning effect and the flexibility of the toothbrush.

[0105] In other embodiments, the number of bristles in the first bristle group is greater than the number of bristles in the second bristle group, which means that the number of bristles suitable for cleaning the tooth surface is greater than the number of bristles suitable for cleaning the gaps between teeth, thus increasing the cleaning coverage and effect of the tooth surface.

[0106] Furthermore, the bristles of the first bristle group or the second bristle group with a semicircular cross-section at the tip are arranged in a wavy shape. The bristles with a semicircular cross-section at the tip are suitable for comprehensive cleaning of the tooth surface and provide a gentle cleaning effect. The wavy design further increases its flexibility. Specifically, the wavy design helps the bristles with a semicircular cross-section at the tip to penetrate deeper into hard-to-reach areas such as tooth gaps and gingival sulci, thereby more effectively removing dental plaque and food residues in these areas.

[0107] Reference Figures 8 to 16 (Second embodiment of the utility model) or Figures 17 to 21 (Third embodiment of the present utility model) In the second and third embodiments of the present utility model, the toothbrush cleaning head 200, 300 proposed in the present application includes a hard connector 10, a cleaning brush assembly 20, 50 and a flexible covering member 30, the hard connector 10 includes a head 11, and a mounting groove 12 is provided on the front of the head 11; the cleaning brush assembly 20, 50 includes a hair-planting base 21, 51 and a plurality of cleaning brush units 25, 55 provided on the hair-planting base 21, 51, and the hair-planting base 21, 51 is fixedly provided in the mounting groove 12;

[0108] The head 11 and the hair transplant base 21, 51 are made of hard materials. The hair transplant base 21, 51 is limitedly abutted against the inner wall of the mounting groove 12; the upper part of the hair transplant base 21, 51 is provided with an upward positive support surface 22, 52; the back of the head 11 is provided with a plurality of mutually separated and downward back support surfaces 16;

[0109] The flexible covering member 30 is fixedly wrapped around the outer side surface of the head 11 , and the flexible covering member 30 also integrally wraps the side surfaces of the hair implanting bases 21 , 51 , so that the assembly gap between the head 11 and the hair implanting bases 21 , 51 is also wrapped.

[0110] In this embodiment, the hard connector 10 and the hair-planting base 21, 51 are made of hard materials, such as ABS plastic, so that torque or high-frequency vibration can be better transmitted. The cleaning unit 25, 55 is used to clean oral foreign matter. The common cleaning unit 25, 55 is a bristle bundle, but the cleaning unit can also be other flexible protrusions, such as a glue stick, or a blade. The flexible covering 30 can be formed on the surface of the hard connector 10 and the hair-planting base 21, 51 by secondary injection molding. The flexible covering 30 is made of elastic or flexible material, so that it can have a buffering effect on impact. It can be understood that in each cross-sectional view, the connection between the hair-planting base 21, 51 and the cleaning unit 25, 55 is schematic. In a preferred embodiment, a plurality of hot melt columns are provided on the back of the hair-planting base 21, 51, and the inner end of the cleaning unit 25, 55 is welded to the hot melt column. The structure formed after this welding will basically fill the cavity between the hair-planting base 21, 51 and the counterweight 40.

[0111] In this embodiment, since the flexible covering member 30 integrally wraps the head 11 of the hard connector 10 and the hair-implanted base 21, 51, the assembly seam on the side between the two hard components, namely the head 11 of the hard connector 10, is shielded, which not only reduces the space for accumulation of water stains, dust, dirt and bacteria, but also further increases the buffering wrapping area and reduces the possibility of impact. In addition, the sealing fit between the flexible covering member 30 and the hair-implanted base 21, 51 improves the waterproof performance of the toothbrush cleaning head.

[0112] It is understandable that during the injection molding process, if the flexible covering is two separate parts, an independent injection runner needs to be set, which makes the mold manufacturing cost high. In addition, if the hair implant base 21, 51 is not firmly limited during the injection molding process, it is easy to shift under the impact of the fluid. Third, if there is no flexible covering at the corner position that is relatively easy to touch the user's oral cavity, its cushioning effect is not comprehensive enough.

[0113] Since the plurality of downwardly facing back support surfaces 16 are separated from each other, the flexible covering member 30 is covered with a single component, and the flexible covering member 30 is injection molded through a common flow channel. Therefore, the mold for injection molding the flexible covering member 30 is simple, and thus the manufacturing cost is low. The injection mold can clamp the toothbrush cleaning head 200, 300 and the hair-planting base 21, 51 by respectively abutting against the front support surfaces 22, 52 of the hair-planting base 21, 51 and the back support surface 16 on the hard connector 10. The hair-planting base 21, 51 is also limitedly abutted against the mounting groove 12 on the hard connector 10. Therefore, in the process of molding the flexible covering member 30, the hair-planting base 21, 51 can be well supported, so that the installation accuracy of the hair-planting base 21, 51 can be better guaranteed, and then the spatial position accuracy of the cleaning unit 25, 55 can be guaranteed. Furthermore, since the head 11 is mainly exposed with the back support surface 16, the area of ​​the back support surface 16 required for stable support during injection molding is relatively small. Therefore, the flexible covering 30 can wrap the head 11 to a greater extent, thereby making the cushioning protection of the toothbrush cleaning head 200, 300 of the utility model more comprehensive.

[0114] Furthermore, the back of the head 11 is provided with more than two first support protrusions 17, and a plurality of back support surfaces 16 are exposed on the flexible covering member 30, and the back support surface 16 is formed on the lower surface of the first support protrusion 17; the flexible covering member 30 is provided with a through hole 31 or a groove for avoiding the first support protrusion 17 to be exposed. Preferably, the plurality of first support protrusions 17 extend along the length direction of the head 11 and are in the shape of a long strip, and the plurality of first support protrusions 17 are arranged at intervals in the width direction of the head 11, so that the probability of collision with the oral tissue or bone of the user can be reduced while ensuring the support area; the plurality of first support protrusions 17 are arranged at intervals in the width direction of the head 11, so that when the flexible covering member 30 is injection molded, the head 11 can be better supported, because this arrangement makes the torque required for the deflection of the head 11 larger. As a result, the hair implantation base 21, 51 is not easy to deviate or tilt with the head 11. The exposure of the back support surface 16 can make the mold touch the back support surface 16, and the mold can be directly withdrawn after the flexible covering member 30 is molded. In other embodiments, a plurality of first supporting protrusions may also be distributed in a dotted manner on the back of the head, and the avoidance through holes or avoidance grooves on the flexible covering member 30 are arranged one-to-one corresponding to the first supporting protrusions.

[0115] Furthermore, the first supporting protrusion 17 includes a straight portion 171 and a curved portion 172 connected to one end of the straight portion 171 . The straight portion 171 extends in a straight line, and the curved portion 172 is bent relative to the straight portion 171 .

[0116] In this embodiment, the first supporting protrusion 17 is provided with a bent portion 172 so that the bottom supporting surface 14 can be provided in a larger range, thereby improving the stability of the support of the head 11; in addition, the setting of the bent portion 172 can provide more limits in the length direction of the head 11 and increase the contact area between the head 11 and the flexible covering member 30, thereby also improving the bonding strength between the head 11 and the flexible covering member 30.

[0117] Further, there are two first supporting protrusions 17, each of which includes two curved portions 172, and the two curved portions 172 are connected to two ends of the corresponding straight portion 171;

[0118] Of the two first supporting protrusions 17 , the two bent portions 172 of one first supporting protrusion 17 are bent in a direction approaching the other first supporting protrusion 17 .

[0119] In this embodiment, two first support protrusions 17 are provided, so that the covering area of ​​the head 11 by the flexible covering member 30 can be increased while forming a stable support structure, thereby forming a more comprehensive buffering effect. The curved portions 172 of the two first support protrusions 17 are bent toward each other, thereby preventing the first support protrusions 17 from extending to the corner area where the toothbrush cleaning head 200, 300 has a higher probability of collision, that is, the connection area between the bottom surface of the toothbrush cleaning head 200, 300 and the side surface of the toothbrush cleaning head 200, 300, thereby improving the comprehensiveness of the buffering.

[0120] Furthermore, the minimum distance between the two first support protrusions 17 is greater than or equal to 2 mm. In this embodiment, if the minimum distance between the two first support protrusions 17 is too small, the flexible covering member 30 in the plastic state will not be able to completely fill the space between the two first support protrusions 17, for example, a void will appear; if the minimum distance between the two is set to be greater than 2 mm, it can ensure that the flexible covering member 30 smoothly and completely fills the space between the two first support protrusions 17, and reduce the lateral pressure on the first support protrusions 17 during the injection molding process of the flexible covering member 30, thereby preventing the lateral pressure from damaging the first support protrusions 17 or causing the position of the head 11 to shift.

[0121] Furthermore, a second supporting protrusion 23 , 53 is provided on the front of the hair implantation base 21 , 51 , and the top surface of the second supporting protrusion 23 , 53 forms a positive supporting surface 22 , 52 ; the front surface of the flexible covering member 30 is lower than the top surface of the second supporting protrusion 23 , 53 .

[0122] In this embodiment, the top surface of the hair implantation base 21, 51 is higher than the front surface of the flexible covering part 30, so that the mold can better apply a clamping force to the hair implantation base 21, 51 while closing the cavity to form the flexible covering part 30, thereby ensuring the position accuracy of the hair implantation base 21, 51.

[0123] Further, refer to Figures 8 to 16 In the second embodiment, the positive support surface 22 is exposed to the flexible covering member 30, so that the mold for injection molding the flexible covering member 30 can directly touch the positive support surface 22, and the mold can be directly withdrawn after the flexible covering member 30 is molded.

[0124] Furthermore, the second support protrusion 23 is cylindrical and surrounds the cleaning unit 25. In this embodiment, the second support protrusion 23 partially protrudes from the front of the hair implantation base 21, so that the cleaning unit 25 not surrounded by the second support protrusion 23 can be more exposed under the premise of ensuring that the height dimension remains unchanged.

[0125] Furthermore, two second support protrusions 23 are provided, so as to reduce the occupation of the peripheral space at the root of the cleaning unit 25, thereby ensuring that a sufficient number of cleaning units 25 have sufficient bending or swinging space. The two second support protrusions 23 are arranged at intervals in the length direction of the head 11. In this way, the hair implantation base 21 can be more firmly supported.

[0126] Figures 17 to 21 The third embodiment of the toothbrush cleaning head of the present application is shown. The toothbrush cleaning head 300 of the third embodiment of the present application is different from the second embodiment only in the cleaning assembly 50. Specifically, the front of the hair-planting base 51 includes a fixed area and an edge area arranged outside the fixed area, and a plurality of cleaning units 55 are fixed in the fixed area; the second support protrusion 53 extends along the entire fixed area, and the second support protrusion 53 deviates outward from the fixed area and deviates inward from the side of the hair-planting base 51.

[0127] In this embodiment, the second supporting protrusion 53 extends along the fixed area of ​​the entire cleaning unit 55, so that the universal mold used to close the molding hair implant base 51 can also be used to close the molding flexible covering 30, thus reducing the number of special molds and the replacement and clamping of the molds.

[0128] Further, refer to Figures 8 to 16 The second embodiment shown or Figures 17 to 21 In the third embodiment shown, the mounting groove 12 has a side support surface 13 and a bottom support surface 14; the hair transplant base 21, 51 is in limiting contact with the side support surface 13 and the bottom support surface 14; of the two joint surfaces between the hair transplant base 21, 51 and the flexible covering member 30, one joint surface is provided with a limiting flange 32, and the other is provided with a limiting groove 24, 54 adapted to the limiting flange 32.

[0129] In this embodiment, the side support surface 13 and the bottom support surface 14 can form a semi-enclosed limit for the hair transplant base 21, 51, and the limit of the front support surface 22, 52 makes the support of the hair transplant base 21, 51 very stable. The joint surface between the hair transplant base 21, 51 and the flexible covering member 30 cooperates with the limit flange 32 and the limit groove 24, 54, so that a stable bite structure can be formed, so that after the flexible covering member 30 is formed, it is not easy to separate from the hair transplant base 21, 51.

[0130] Furthermore, a counterweight groove 15 is provided on the bottom wall surface of the mounting groove 12, and a buckle groove 151 is provided on the side wall surface of the counterweight groove 15 extending to below the bottom supporting surface 14; the toothbrush cleaning head 200, 300 also includes a counterweight block 40 fixedly embedded in the counterweight groove 15, and the edge of the counterweight block 40 is filled in the buckle groove 151.

[0131] In this embodiment, the setting of the counterweight 40 can balance the rotation impulse of the toothbrush cleaning heads 200 and 300, making the large-angle sweeping vibration working mode more stable. Since the buckle slot 151 is located below the bottom support surface 14, and the edge of the counterweight 40 is filled in the buckle slot 151, the clamping force acting on the bottom support surface 14 can also be transmitted to the counterweight 40, thereby avoiding the clamping force from generating a concentrated shear force on the joint surface of the counterweight 40 and the head 11, that is, avoiding the counterweight 40 and the head 11 from loosening due to the clamping force during the injection molding process of the flexible covering 30.

[0132] Furthermore, the hard connector 10 also includes a rod 18 connected to the head 11, and an annular recess 19 is provided at the connection between the rod 18 and the head 11. The flexible covering 30 also fills the annular recess 19, and the outer surface of the flexible covering 30 smoothly transitions with the outer surface of the rod 18.

[0133] In this embodiment, the toothbrush cleaning head 200, 300 can be better connected to the output shaft of the electric toothbrush by providing the rod 18. The annular recess 19 is provided to cover and fill the flexible covering member 30, and the outer surface of the flexible covering member 30 is flush with the outer surface of the rod 18, so that the lateral dimensions of the toothbrush cleaning head 200, 300, such as the width and height dimensions, are not excessively increased while the buffer thickness is ensured.

[0134] The present application also proposes an electric toothbrush (not shown), comprising a main unit and a toothbrush cleaning head connected to the output shaft of the main unit, the toothbrush cleaning head being the toothbrush cleaning head 200, 300 as described above. The specific structure of the toothbrush cleaning head 200, 300 refers to the above embodiments. Since the electric toothbrush adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0135] In this embodiment, the main unit generally includes a housing and a motor disposed inside the housing, and the motor is connected to the toothbrush cleaning head 200, 300 through an output shaft to drive the toothbrush cleaning head 200, 300 to vibrate, thereby achieving the function of oral cleaning. It is understandable that when the sweeping angle of the toothbrush cleaning head 200, 300 is large and the sweeping frequency is high, the probability and strength of the toothbrush cleaning head 200, 300 colliding with the user's oral tissue or teeth will also increase, but by providing a flexible covering 30, such impact can be buffered. It is understandable that the flexible covering 30 is generally made of a flexible or elastic material, such as silicone.

[0136] 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 it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 cleaning head, characterized in that: include A hard connector, the hard connector comprising a head and a rod; A flexible covering member, the flexible covering member at least covers the periphery of the head, the flexible covering member is provided with a first assembly groove for accommodating the head; the first assembly groove is provided with a first opening; as well as A hair transplant base, wherein the wall surface of the hair transplant base facing the head is overlapped with the end surface of the head facing the first opening; and the hair transplant base is exposed at the first opening; the side wall of the first assembly groove extends toward the hair transplant base, covers the joint seam between the head and the hair transplant base, and is sealed to the outer peripheral surface of the hair transplant base.

2. The toothbrush cleaning head according to claim 1, characterized in that: An ultrasonic line is provided on one of the side surface of the hair transplantation base facing the head and the end surface of the head facing the hair transplantation base, so that the hair transplantation base and the head are ultrasonically welded.

3. The toothbrush cleaning head according to claim 2, characterized in that: The hair implanting base includes a hair implanting plate and a seat body connected to the hair implanting plate on the side close to the head; the outer peripheral surface of the hair implanting plate fits the side wall of the first assembly groove; the side surface of the seat body facing the head and the end surface of the head facing the seat body are ultrasonically welded; the hair implanting plate includes a bristle stop surface facing the head; the bristle stop surface deviates from the side surface of the seat body facing the head in a direction away from the head.

4. The toothbrush cleaning head according to claim 3, characterized in that: The hair implanting plate includes a hair implanting portion and an edge portion, wherein the edge portion is circumferentially connected to the hair implanting portion and arranged corresponding to the end surface of the head portion facing the first opening; the hair implanting portion bulges relative to the edge portion in a direction away from the head portion.

5. The toothbrush cleaning head according to claim 4, characterized in that: The side wall of the first assembly groove extends to fit with the outer peripheral surface of the edge portion, and the end surface of the flexible covering member is flush with the end surface of the edge portion facing away from the head portion.

6. The toothbrush cleaning head according to claim 3, characterized in that: The seat body has an annular flange extending toward the head; the head is provided with a second assembly groove toward the seat body; the annular flange is limitedly matched with the inner wall surface of the second assembly groove.

7. The toothbrush cleaning head according to claim 6, characterized in that: The bottom wall of the second assembly groove is provided with a third assembly groove; the toothbrush cleaning head further comprises a counterweight block, which is adapted to be embedded in the third assembly groove, and the counterweight block is spaced apart from the hair implantation base.

8. The toothbrush cleaning head according to claim 7, characterized in that: The flexible covering member is transparent, and at least the head of the hard connecting member is transparent, and the side surface of the counterweight block facing the bottom wall of the third assembly groove has a polishing layer.

9. The toothbrush cleaning head according to claim 8, characterized in that: The head and the rod are both transparent.

10. The toothbrush cleaning head according to claim 1, characterized in that: The flexible covering member covers the outer surface of the head and the hair implantation substrate.

11. The toothbrush cleaning head according to claim 3, characterized in that: The inner side wall of the first assembly groove is provided with a first connection part; the first connection part is spaced apart from the head; the outer peripheral surface of the hair implantation plate is provided with a second connection part; One of the first connection portion and the second connection portion is a protrusion, and the other is a groove matched with the protrusion.

12. The toothbrush cleaning head according to any one of claims 1 to 11, characterized in that: A convex portion is arranged on the side of the head portion facing away from the hair implantation base, and the convex portion extends along the length direction of the rod portion; and a concave portion adapted to the convex portion is arranged on the flexible covering member.

13. The toothbrush cleaning head according to any one of claims 1 to 11, characterized in that: The hair implantation base has a first area and a second area; the first area is provided with a first bristle group, and the second area is provided with a second bristle group; the bristles of the first bristle group and the second bristle group are different.

14. The toothbrush cleaning head according to claim 13, characterized in that: The bristles of the first bristle group and the second bristle group are different in shape, diameter, length, hardness or cross-sectional shape; and / or, The bristle density or bristle arrangement shape of the first bristle group and the second bristle group are different.

15. The toothbrush cleaning head according to claim 14, characterized in that The bristles of the first bristle group and the second bristle group include a root and a tip, wherein the root is fixedly connected to the bristle implantation base, and the tip is connected to an end of the root away from the bristle implantation base; One of the cross sections of the tips of the bristles of the first bristle group and the second bristle group is semicircular, and the other is conical.

16. The toothbrush cleaning head according to claim 13, characterized in that: The first area is connected to the second area in a circumferential manner, the end of the first bristle group away from the bristle base is formed into a round wire, the end of the second bristle group away from the bristle base is formed into a pointed wire, and the height of the first bristle group is greater than the height of the second bristle group; and / or, The first bristle group and the second bristle group are spaced apart; and / or, The number of bristles in the first bristle group is greater than the number of bristles in the second bristle group.

17. The toothbrush cleaning head according to claim 15, characterized in that The bristles of the first bristle group or the second bristle group whose cross section of the tip is semicircular are arranged in a wave shape.

18. A toothbrush cleaning head, comprising a hard connector, a cleaning brush assembly and a flexible covering member, wherein the hard connector comprises a head, and a mounting groove is provided on the front of the head; the cleaning brush assembly comprises a hair-planting base and a plurality of cleaning brush units provided on the hair-planting base, and the hair-planting base is fixedly provided in the mounting groove; characterized in that: The hair transplant base is made of hard material, and the hair transplant base is limitedly abutted against the inner wall of the mounting groove; the upper part of the hair transplant base is provided with an upward positive support surface; the back of the head is provided with a plurality of mutually separated and downward back support surfaces; The flexible covering member is fixedly wrapped around the outer side of the head, and the flexible covering member also integrally wraps around the side of the hair implantation base.

19. The toothbrush cleaning head according to claim 18, characterized in that The back of the head is provided with more than two first supporting protrusions, and a plurality of the back supporting surfaces are exposed from the flexible covering member, and the back supporting surfaces are formed on the lower surface of the first supporting protrusions; the flexible covering member is provided with avoidance through holes or avoidance grooves for exposing the first supporting protrusions.

20. The toothbrush cleaning head according to claim 19, characterized in that The plurality of first supporting protrusions extend along the length direction of the head to be in a strip shape, and the plurality of first supporting protrusions are arranged at intervals in the width direction of the head.

21. The toothbrush cleaning head according to claim 20, characterized in that The first supporting protrusion includes a straight portion and a curved portion connected to one end of the straight portion, the straight portion extends in a straight line, and the curved portion is bent relative to the straight portion.

22. The toothbrush cleaning head according to claim 21, characterized in that There are two first supporting protrusions, each of which includes two curved portions, and the two curved portions are connected to two ends of the corresponding straight portion; Among the two first supporting protrusions, the two bent portions of one of the first supporting protrusions are bent in a direction approaching the other first supporting protrusion.

23. The toothbrush cleaning head according to claim 21 or 22, characterized in that: The minimum distance between two of the first supporting protrusions is greater than or equal to 2 mm.

24. The toothbrush cleaning head according to claim 19, characterized in that A plurality of the first supporting protrusions are distributed in a dotted manner on the back of the head.

25. The toothbrush cleaning head according to any one of claims 18 to 22 and 24, characterized in that: The positive supporting surface is exposed from the flexible covering member.

26. The toothbrush cleaning head according to claim 25, characterized in that A second supporting protrusion is disposed on the front side of the hair implantation base, and the top surface of the second supporting protrusion forms the positive supporting surface; the front side of the flexible covering member is lower than the top surface of the second supporting protrusion.

27. The toothbrush cleaning head according to claim 26, characterized in that The second supporting protrusion is cylindrical and is disposed around the cleaning unit.

28. The toothbrush cleaning head according to claim 27, characterized in that Two second supporting protrusions are provided, and the two second supporting protrusions are arranged at intervals in the length direction of the head.

29. The toothbrush cleaning head according to claim 26, characterized in that The front side of the hair implantation base includes a fixed area and an edge area arranged outside the fixed area, and multiple cleaning units are fixed in the fixed area; the second support protrusion extends along the entire fixed area, and the second support protrusion deviates outward from the fixed area and inward from the side of the hair implantation base.

30. The toothbrush cleaning head according to claim 18, characterized in that The mounting groove has a side support surface and a bottom support surface; the hair transplant base is in limited contact with the side support surface and the bottom support surface; of the two joint surfaces between the hair transplant base and the flexible covering part, one joint surface is provided with a limiting flange, and the other is provided with a limiting groove adapted to the limiting flange.

31. The toothbrush cleaning head according to claim 30, characterized in that The bottom wall of the mounting groove is provided with a counterweight groove, and the side wall of the counterweight groove is provided with a buckle groove extending to below the bottom supporting surface; the toothbrush cleaning head also includes a counterweight block fixedly embedded in the counterweight groove, and the edge of the counterweight block fills the buckle groove.

32. The toothbrush cleaning head according to claim 18, characterized in that The hard connector also includes a rod connected to the head, an annular recess is provided at the connection between the rod and the head, the flexible covering also fills the annular recess, and the outer surface of the flexible covering smoothly transitions with the outer surface of the rod.

33. An electric toothbrush, comprising a main body and a toothbrush cleaning head connected to an output shaft of the main body, characterized in that: The toothbrush cleaning head is a toothbrush cleaning head as described in any one of claims 1-32.

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