Toothbrush head and electric toothbrush

Abstract

The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush head and an electric toothbrush. The toothbrush head comprises a brush rod, bristles are arranged at one end of the brush rod, a containing cavity is formed in the other end of the brush rod, an inner fastener is integrally formed in the containing cavity, and an insertion cavity is formed in the inner fastener and used for inserting a vibration machine core on a handle into the insertion cavity. The end, provided with the bristles, of the brush rod is further provided with a protective layer, and the protective layer and the inner fastener are both made of elastic materials. By adopting the mode, the noise generated by vibration can be reduced, and the strength and impact force for bumping teeth are reduced, so that the experience feeling during use is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, and in particular to an electric toothbrush head and an electric toothbrush. Background Technology

[0002] With the continuous improvement of living standards, electric toothbrushes have been widely promoted in the market. Electric toothbrushes use a vibrating motor to rapidly rotate or vibrate, causing the brush head to vibrate at high frequency, instantly breaking down toothpaste into fine foam that deeply cleans between teeth. At the same time, the vibration of the bristles promotes blood circulation in the mouth and has a massaging effect on the gum tissue.

[0003] The toothbrush head includes a brush handle and a socket. The bristles are set on the brush handle, and the socket is located at one end of the brush handle. The socket has a motor channel, and the vibrating motor is inserted into the motor channel. The vibrating motor abuts against the motor channel. Through the high-frequency vibration of the vibrating motor, the bristles on the electric toothbrush head are driven to vibrate, so as to achieve the function of brushing teeth.

[0004] However, in actual use, there is usually a lot of vibration and noise. The brush handle may hit the teeth during the transmission of vibration, causing discomfort such as soreness and numbness, which affects the user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model embodiment is to provide a toothbrush head and an electric toothbrush that can reduce the noise generated by vibration and reduce the force and impact of hitting teeth, so as to improve the user experience.

[0006] This utility model discloses a toothbrush head, including: a brush handle, one end of which is provided with bristles, and the other end of which forms a receiving cavity. An inner fastener is integrally formed in the receiving cavity, and an insertion cavity is formed in the inner fastener for inserting a vibrating motor on the handle into the insertion cavity. The end of the brush handle with the bristles is also provided with a protective layer. Both the protective layer and the inner fastener are made of elastic material.

[0007] Optionally, the protective layer and the inner fastener are made of thermoplastic elastomer.

[0008] Optionally, the brush rod is provided with a through hole communicating with the accommodating cavity, the inner fastener includes a plug-in body and a stop portion connected to one end of the plug-in body, the plug-in body is integrally injection molded with the inner wall of the accommodating cavity, and the stop portion is located in the through hole, and the insertion cavity is located in the plug-in body.

[0009] Optionally, the inner wall of the insertion cavity is provided with an axially extending vent groove, the vent groove extending to the entrance of the insertion cavity, and the entrance of the insertion cavity being flush with the end of the brush rod.

[0010] Optionally, the outer ring of the insertion body is provided with an annular protrusion, and the inner wall of the receiving cavity is formed with an annular groove, and the annular protrusion is held in the annular groove.

[0011] Optionally, a limiting protrusion is also formed in the insertion cavity, which is used to limit the movement of the vibrating mechanism.

[0012] Optionally, the brush handle has a recessed portion at one end where the bristles are located, the protective layer wraps around the outer ring of the recessed portion, and the protective layer smoothly transitions to the outer surface of the brush handle.

[0013] Optionally, the brush rod is further provided with a receiving groove, and a bristle-planting plate is disposed in the receiving groove, and the bristles are connected to the brush rod through the bristle-planting plate.

[0014] Optionally, the receiving groove is further provided with a counterweight and a flexible pad, the flexible pad being located at the bottom of the receiving groove, and the counterweight being disposed between the flexible pad and the flocking sheet.

[0015] This utility model also discloses an electric toothbrush, including a handle and a toothbrush head as described in any one of the above descriptions, wherein the toothbrush head is detachably connected to the handle.

[0016] Compared with the prior art, the beneficial effects of the toothbrush head and electric toothbrush provided in this utility model embodiment are as follows: The toothbrush head has bristles at one end of the brush handle for cleaning teeth. The other end has a receiving cavity, within which an inner fastener is integrally formed. An insertion cavity is formed inside the inner fastener, the purpose of which is to insert the vibrating motor from the handle into the insertion cavity to achieve power transmission. Simultaneously, a protective layer is also provided at the end of the brush handle where the bristles are located. This protective layer, made of elastic material, can reduce hard collisions with teeth during the transmission of vibration by the brush handle, thereby reducing the force and impact of hitting teeth, reducing discomfort such as soreness and numbness, and improving the user experience. In addition, the elastic inner fastener can, to a certain extent, buffer the vibration generated by the vibrating motor during operation, reducing vibration noise and making the electric toothbrush run more smoothly. Attached Figure Description

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the toothbrush head provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the toothbrush head provided in an embodiment of the present utility model;

[0020] Figure 3This is a cross-sectional schematic diagram of the internal fastener provided in this embodiment of the utility model;

[0021] Figure 4 This is an exploded view of the toothbrush head provided in an embodiment of this utility model.

[0022] The labels for the attached figures are as follows:

[0023] 100. Toothbrush head; 110. Brush handle; 112. Receiving cavity; 1122. Annular groove; 114. Through hole; 116. Recessed part; 118. Receiving groove; 120. Brush bristles; 130. Inner fastener; 132. Insertion cavity; 1322. Vent groove; 1324. Limiting protrusion; 134. Insertion body; 1342. Annular protrusion; 136. Stop part; 140. Protective layer; 150. Bristle patch; 160. Counterweight; 170. Flexible pad. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a toothbrush head 100, including: a brush handle 110, one end of the brush handle 110 is provided with bristles 120, the other end of the brush handle 110 forms a receiving cavity 112, an inner fastener 130 is integrally formed in the receiving cavity 112, an insertion cavity 132 is formed in the inner fastener 130, for inserting the vibrating motor on the handle into the insertion cavity 132, and a protective layer 140 is also provided at the end of the brush handle 110 provided with bristles 120. Both the protective layer 140 and the inner fastener 130 are made of elastic material.

[0026] Specifically, the toothbrush head 100 has bristles 120 at one end of the brush handle 110 for cleaning teeth. The other end has a receiving cavity 112, within which an inner fastener 130 is integrally formed. The inner fastener 130 has an insertion cavity 132 inside, which is used to insert the vibrating motor from the handle into the insertion cavity 132 for power transmission. Simultaneously, a protective layer 140 is also provided at the end of the brush handle 110 where the bristles 120 are located. Made of elastic material, the protective layer 140 reduces hard impacts with the teeth during vibration transmission from the brush handle 110, thereby reducing the force and impact on the teeth and minimizing discomfort such as soreness and numbness, thus improving the user experience. Furthermore, the elastic inner fastener 130 can buffer the vibrations generated by the vibrating motor to a certain extent, reducing vibration noise and making the electric toothbrush run more smoothly.

[0027] In an optional embodiment of this application, the protective layer 140 and the inner fastener 130 are made of thermoplastic elastomer (TPE).

[0028] Specifically, thermoplastic elastomers are typically copolymers composed of two or more polymer segments with different properties linked by chemical bonds. One segment possesses the elasticity of rubber and is called the soft segment; the other segment possesses the rigidity and thermal stability of plastic and is called the hard segment. The soft segment imparts elasticity and flexibility to the material, while the hard segment provides strength, hardness, and processability. This unique microstructure allows thermoplastic elastomers to exhibit rubber-like elasticity at room temperature, which is beneficial for meeting current application environments. Protective layers 140 and inner fasteners 130 made from thermoplastic elastomers can better exert their elastic cushioning effect, extend service life, and facilitate production and processing, reducing production costs. In practical applications, different types of thermoplastic elastomers can be selected according to requirements, such as: styrene-based (SBS, SIS, SEBS, SEPS), olefin-based (TPO, TPV), diene-based (TPB, TPI), vinyl chloride-based (TPVC, TCPE), urethane-based (TPU), ester-based (TPEE), amide-based (TPAE), organofluorine-based (TPF), organosilicon-based, and ethylene-based elastomers, etc.

[0029] like Figure 2 As shown, the brush rod 110 is provided with a through hole 114 communicating with the accommodating cavity 112. The inner fastener 130 includes a plug-in body 134 and a stop part 136 connected to one end of the plug-in body 134. The plug-in body 134 is integrally injection molded with the inner wall of the accommodating cavity 112, and the stop part 136 is located in the through hole 114. The insertion cavity 132 is located in the plug-in body 134.

[0030] Specifically, the one-piece injection molding connection enhances the connection strength between the inner buckle 130 and the brush rod 110. The stop part 136 located in the through hole 114 further prevents the inner buckle 130 from moving in the receiving cavity 112, ensuring the stability of the vibrating motor after insertion, thereby transmitting vibration more effectively and also helping to improve the overall reliability of the electric toothbrush.

[0031] like Figure 2 and Figure 3 As shown, the inner wall of the insertion cavity 132 is provided with an axially extending exhaust groove 1322, which extends to the entrance of the insertion cavity 132, and the entrance of the insertion cavity 132 is flush with the end of the brush rod 110.

[0032] Specifically, the venting groove 1322 prevents excessive resistance when inserting the vibrating motor due to air trapped in the insertion cavity 132, allowing for smoother insertion. It also helps reduce abnormal vibrations and noise caused by air buildup, improving the electric toothbrush's performance. Furthermore, the inlet of the insertion cavity 132 is flush with the end of the brush handle 110, preventing the inner clip 130 from protruding and protecting it with the brush handle 110.

[0033] It should also be noted that the insertion cavity 132 mates with the receiving cavity 112 of the brush rod 110, and combined with the material properties of the inner fastener 130 itself, this helps to increase the number of insertions and removals and extend its service life. Due to the elasticity and flexibility of the inner fastener 130 itself, compared with conventional hard plastics (PP, POM, or ABS, etc.), there is no problem of plastic deformation and wear after repeated compression and mating, which helps to ensure the reliability of the mating and improve the user experience.

[0034] like Figure 4 As shown, the outer ring of the insertion body 134 is provided with an annular protrusion 1342, and the inner wall of the receiving cavity 112 is formed with an annular groove 1122, and the annular protrusion 1342 is held in the annular groove 1122.

[0035] Specifically, the engagement of the annular protrusion 1342 and the annular groove 1122 increases the tightness and firmness of the connection between the insertion body 134 and the receiving cavity 112, preventing relative rotation or axial movement of the insertion body 134 within the receiving cavity 112. This ensures the stability of power transmission during the operation of the vibrating motor and improves the overall performance of the electric toothbrush. Furthermore, the engagement of the annular protrusion 1342 and the annular groove 1122 enhances the bonding between the insertion body 134 and the brush handle 110, reducing the risk of delamination between the insertion body 134 and the brush handle 110 during use.

[0036] like Figure 3 As shown, a limiting protrusion 1324 is also formed inside the insertion cavity 132, which is used to limit the movement of the vibrating mechanism.

[0037] Specifically, the presence of the limiting protrusion 1324 precisely limits the insertion position of the vibratory motor core, preventing it from shifting or wobbling within the insertion cavity 132. This ensures the accuracy and stability of power transmission between the vibratory motor core and the brush rod 110, avoiding problems such as uneven vibration transmission or increased noise caused by improper positioning of the vibratory motor core. Furthermore, it ensures a stable fit with the vibratory motor core, preventing misalignment or detachment due to vibration during use. Additionally, because the inner fastener 130 is made of elastic material, it provides a certain degree of tolerance when the vibratory motor core mates with the insertion cavity 132. Regardless of whether the user inserts it in a specific direction, it will not affect normal insertion and use, eliminating the need for a foolproof structure like in traditional mating systems.

[0038] like Figure 4 As shown, a recessed portion 116 is formed at one end of the brush handle 110 where the bristles 120 are located. A protective layer 140 is wrapped around the outer ring of the recessed portion 116, and the protective layer 140 smoothly transitions with the outer surface of the brush handle 110.

[0039] Specifically, the recessed portion 116 provides installation space for the protective layer 140, allowing it to better wrap around the brush handle 110 and enhancing its stability. The smooth, transitional outer surface reduces friction and irritation to oral tissues during brushing, improving user comfort and helping to maintain oral hygiene by preventing plaque buildup at the connection point. Furthermore, the protective layer 140 not only prevents hard impacts with teeth but also protects the toothbrush head 100 from cracking during use, thus enhancing safety.

[0040] like Figure 4 As shown, a receiving groove 118 is also formed on the brush rod 110, and a bristle plate 150 is provided in the receiving groove 118. The bristles 120 are connected to the brush rod 110 through the bristle plate 150.

[0041] Specifically, the bristles 120 are connected by the bristle plate 150, making the installation of the bristles 120 more convenient and secure. When connecting the bristles 120 to the brush handle 110, the bristle plate 150 can directly form the required connection with the brush handle 110, which helps to improve production efficiency. Furthermore, the bristle plate 150 also makes the arrangement of the bristles 120 more neat, improving the cleaning effect.

[0042] like Figure 4 As shown, a counterweight 160 and a flexible pad 170 are also provided in the receiving groove 118. The flexible pad 170 is located at the bottom of the receiving groove 118, and the counterweight 160 is disposed between the flexible pad 170 and the flocking piece 150.

[0043] Specifically, the counterweight 160 optimizes the center of gravity distribution of the toothbrush head 100, making brushing more comfortable and easier to operate. The flexible pad 170 cushions the vibrations generated by the bristles 120 during operation, reducing impact on the brush handle 110 and the oral cavity, further reducing vibration noise and discomfort, and improving the user experience.

[0044] This utility model also discloses an electric toothbrush, including a handle and a toothbrush head 100 as described in the foregoing embodiments, wherein the toothbrush head 100 is detachably connected to the handle. This electric toothbrush has the same structure and beneficial effects as the toothbrush head 100 in the foregoing embodiments. The structure and beneficial effects of the toothbrush head 100 have been described in detail in the foregoing embodiments and will not be repeated here.

[0045] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A toothbrush head, characterized in that, include: A brush handle, one end of which is provided with brush bristles, and the other end of which forms a receiving cavity. An inner fastener is integrally formed in the receiving cavity, and an insertion cavity is formed in the inner fastener for inserting the vibrating motor on the handle into the insertion cavity. The end of the brush handle with the brush bristles is also provided with a protective layer. Both the protective layer and the inner fastener are made of elastic material.

2. The toothbrush head according to claim 1, characterized in that, The protective layer and the inner fastener are made of thermoplastic elastomer.

3. The toothbrush head according to claim 2, characterized in that, The brush rod is provided with a through hole communicating with the accommodating cavity. The inner fastener includes a plug-in body and a stop part connected to one end of the plug-in body. The plug-in body is integrally injection molded with the inner wall of the accommodating cavity, and the stop part is located in the through hole. The insertion cavity is located in the plug-in body.

4. The toothbrush head according to claim 3, characterized in that, The inner wall of the insertion cavity is provided with an axially extending vent groove, which extends to the entrance of the insertion cavity, and the entrance of the insertion cavity is flush with the end of the brush rod.

5. The toothbrush head according to claim 4, characterized in that, The outer ring of the plug-in body is provided with an annular protrusion, and the inner wall of the receiving cavity is formed with an annular groove, and the annular protrusion is held in the annular groove.

6. The toothbrush head according to any one of claims 1-5, characterized in that, A limiting protrusion is also formed inside the insertion cavity, which is used to limit the movement of the vibrating mechanism.

7. The toothbrush head according to any one of claims 1-5, characterized in that, The brush handle has a recessed portion at one end where the bristles are located. The protective layer wraps around the outer ring of the recessed portion, and the protective layer smoothly transitions to the outer surface of the brush handle.

8. The toothbrush head according to claim 7, characterized in that, The brush handle also has a receiving groove, in which a bristle-planting plate is disposed, and the bristles are connected to the brush handle through the bristle-planting plate.

9. The toothbrush head according to claim 8, characterized in that, The receiving groove is also provided with a counterweight and a flexible pad. The flexible pad is located at the bottom of the receiving groove, and the counterweight is disposed between the flexible pad and the flocking piece.

10. An electric toothbrush, characterized in that, It includes a brush handle and a toothbrush head as described in any one of claims 1-9, wherein the toothbrush head is detachably connected to the brush handle.

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