Brush head assembly and electric toothbrush

Abstract

The utility model provides a brush head assembly and an electric toothbrush. The brush head assembly comprises a brush head body, a first flexible part and a bristle part. The brush head body comprises a bearing part. The first flexible part wraps the bearing part and comprises a flexible bottom, and the flexible bottom is in a circular arc shape; the bristle piece comprises a bristle planting plate and bristles arranged on the bristle planting plate, the bristle planting plate and the flexible bottom are located on the two opposite sides of the bearing part respectively, and the bristle planting plate is connected with the bearing part. According to the brush head assembly and the electric toothbrush, the tooth beating condition can be effectively reduced, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of electric toothbrush technology, specifically to a brush head assembly and an electric toothbrush. Background Technology

[0002] Electric toothbrushes, especially vibrating electric toothbrushes, can improve brushing efficiency through the oscillation of the brush head. However, some electric toothbrushes can cause teeth to hit each other during use, resulting in a poor user experience. Utility Model Content

[0003] This application provides a brush head assembly and an electric toothbrush that can effectively reduce tooth knocking.

[0004] On one hand, this application provides a brush head assembly, including:

[0005] A brush head body, the brush head body including a support portion;

[0006] A first flexible member, which encloses the supporting portion, includes a flexible bottom that is arc-shaped; and

[0007] A bristle component, comprising a bristle-planting plate and bristles disposed on the bristle-planting plate, wherein the bristle-planting plate and the flexible bottom are respectively located on opposite sides of the support portion, and the bristle-planting plate is connected to the support portion.

[0008] In one possible embodiment, the first flexible member further includes a flexible side portion connected to the flexible bottom, the flexible side portion and the flexible bottom forming a semi-circular or U-shaped first flexible member.

[0009] In one possible embodiment, a buffer portion is provided between the flexible bottom and the supporting portion.

[0010] In one possible embodiment, the flexible bottom has a plurality of first protrusions on the side facing the support portion, and there is a first gap between two adjacent first protrusions, the first protrusions and the first gaps forming the buffer portion.

[0011] In one possible embodiment, the first protrusion abuts against the support portion.

[0012] In one possible embodiment, the bristle component further includes at least one fastening portion disposed on the bristle plate, the fastening portion engaging with the bearing portion.

[0013] In one possible embodiment, the support portion has at least one first mounting hole, the first flexible member has at least one second mounting hole, and the fastening portion passes through the second mounting hole and the first mounting hole in sequence, and engages with the side of the support portion opposite to the flocking plate.

[0014] In one possible embodiment, the brush head assembly further includes a second flexible member disposed between the support portion and the flexible bottom. The second flexible member has a plurality of second protrusions formed on the side facing the flexible bottom, and a second gap is formed between two adjacent second protrusions. The second protrusions and the second gaps form the buffer portion.

[0015] In one possible embodiment, the second protrusion contacts the flexible bottom.

[0016] In one possible embodiment, the first flexible member and the second flexible member are nested together and integrally connected.

[0017] In one possible embodiment, the brush head body further includes at least one connecting post disposed on the support portion, the connecting post passing through the second flexible member, and the connecting post being connected to the first flexible member.

[0018] In one possible embodiment, the stiffness of the first flexible element is less than or equal to 20 degrees.

[0019] In one possible embodiment, the material of the first flexible element includes silicone or thermoplastic elastomer.

[0020] In one possible embodiment, the first flexible member is bonded to the support portion.

[0021] In one possible embodiment, the flocking plate is bonded together with the first flexible member and the load-bearing portion.

[0022] In one possible embodiment, at least one overflow groove is formed on the surface of the support portion on the side opposite to the flexible bottom.

[0023] In one possible embodiment, the first flexible member further includes a flexible fitting portion connected to the flexible bottom, the flexible fitting portion being attached to the surface of the support portion on the side opposite to the flexible bottom.

[0024] In one possible embodiment, the brush head body further includes a rotating connection portion connected to one end of the support portion, and the first flexible member further includes a flexible end portion connected to the flexible bottom, the flexible end portion wrapping around the rotating connection portion.

[0025] On the other hand, this application also provides an electric toothbrush, including a handle and the brush head assembly, the brush head assembly being connected to the handle.

[0026] The brush head assembly provided in this application includes a brush head body, a first flexible member, and a bristle member. The first flexible member wraps around the support portion of the brush head body, and the bristle plate of the bristle member is connected to the support portion. This achieves the connection of the brush head body, the first flexible member, and the bristle member, forming a single, non-separable brush head assembly. Furthermore, since the flexible bottom of the first flexible member and the bristle plate of the bristle member are located on opposite sides of the support portion (i.e., the flexible bottom is located on the side of the support portion away from the bristle plate), the brush head body is blocked by the flexible bottom during use, preventing it from colliding with teeth. The flexible bottom is also arc-shaped, so the first flexible member is less likely to collide with teeth when the brush head assembly rotates, effectively reducing the likelihood of the brush head assembly hitting teeth. In addition, the flexibility of the flexible bottom itself also acts as a damping agent when the first flexible member collides with teeth, thereby improving the comfort of using the brush head assembly. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0028] Figure 1 This is a schematic diagram of a brush head assembly provided in an embodiment of this application;

[0029] Figure 2 for Figure 1 An exploded view of the brush head assembly shown.

[0030] Figure 3 Another structural schematic diagram of the brush head assembly provided in the embodiments of this application;

[0031] Figure 4 for Figure 3 An exploded view of the brush head assembly shown.

[0032] Figure 5 for Figure 1 A cross-sectional schematic diagram of the brush head assembly shown;

[0033] Figure 6 for Figure 1 A schematic diagram of the structure of the first flexible component in the brush head assembly shown;

[0034] Figure 7 for Figure 1 Another cross-sectional schematic diagram of the brush head assembly shown;

[0035] Figure 8 for Figure 3 A cross-sectional schematic diagram of the brush head assembly shown;

[0036] Figure 9 for Figure 1 An exploded view of the brush head assembly from another perspective;

[0037] Figure 10 for Figure 3 An exploded view of the brush head body and the second flexible component in the brush head assembly shown.

[0038] Figure 11 for Figure 1 The diagram shows the structure of the brush head body in the brush head assembly.

[0039] Explanation of reference numerals in the attached figures:

[0040] Brush head assembly 100; brush head body 10; first flexible component 20; bristle component 30; support portion 101; support bottom 110; support side portion 112; flexible bottom 201; bristle plate 301; bristles 302; flexible side portion 202; first protrusion 203; fastening portion 303; first mounting hole 113; second mounting hole 204; second flexible component 40; second protrusion 401; connecting post 114; anti-overflow groove 115; flexible fitting portion 205; rotating connection portion 102; flexible end portion 206. Detailed Implementation

[0041] The technical solutions provided in this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the protection scope of this application.

[0042] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0043] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device that includes one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0044] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of a brush head assembly 100 provided in an embodiment of this application. Figure 2 for Figure 1 The exploded view of the brush head assembly 100 shown is shown below. Figure 3 This is a schematic diagram of another structure of the brush head assembly 100 provided in an embodiment of this application. Figure 4 for Figure 3 The diagram shows an exploded view of the brush head assembly 100. The brush head assembly 100 includes a brush head body 10, a first flexible member 20, and a bristle member 30.

[0045] This application does not specifically limit the material of the brush head body 10. Exemplarily, the brush head body 10 can be made of plastic, including but not limited to acrylonitrile butadiene styrene (ABS), polypropylene (PP), and polycarbonate (PC). The brush head body 10 is used to support the bristles 30. Specifically, the brush head body 10 includes a support portion 101.

[0046] In one possible embodiment, please refer to Figure 2 and Figure 4 The supporting portion 101 includes a connected supporting bottom 110 and a supporting side 112. The supporting bottom 110 can be plate-shaped, including but not limited to a circular plate, an elliptical plate, a square plate, or a rectangular plate. The supporting side 112 can be annular, including but not limited to a circular ring, an elliptical ring, a square ring, or a rectangular ring. In one possible embodiment, the supporting bottom 110 can be an elliptical plate, and the supporting side 112 can be an elliptical ring. Of course, in other possible embodiments, the supporting portion 101 can be plate-shaped, including but not limited to a circular plate, an elliptical plate, a square plate, or a rectangular plate.

[0047] This application does not specifically limit the material of the first flexible member 20. Exemplarily, the material of the first flexible member 20 can be silicone, rubber, or thermoplastic elastomer (TPE), etc. The hardness of the first flexible member 20 is less than the hardness of the brush head body 10. It is understood that the material of the first flexible member 20 is relatively soft, while the material of the brush head body 10 is relatively hard. The first flexible member 20 is used to create a soft effect on the side of the support portion 101 facing away from the bristle member 30. Specifically, the first flexible member 20 wraps around the support portion 101.

[0048] The first flexible member 20 may wrap around the support portion 101 in several ways, including but not limited to the first flexible member 20 being sleeved on the support portion 101, or the first flexible member 20 being directly formed on the outer peripheral surface of the support portion 101. The first flexible member 20 may wrap around the entire support portion 101, or it may wrap around a portion of the support portion 101. In this application, the first flexible member 20 at least wraps around the side of the support portion 101 opposite to the bristle member 30.

[0049] like Figure 5 As shown, Figure 5 for Figure 1 The diagram shows a cross-sectional view of the brush head assembly 100. The first flexible member 20 includes a flexible bottom 201, which is arc-shaped. The flexible bottom 201 is located on the side of the support portion 101 opposite to the bristle member 30. It is understood that the flexible bottom 201 wraps around the side of the support portion 101 opposite to the bristle member 30. Optionally, the flexible bottom 201 is semi-circular, meaning the central angle of the flexible bottom 201 is 180 degrees; or the flexible bottom 201 is a small semi-circular, meaning the central angle of the flexible bottom 201 is less than 180°; or the flexible bottom 201 is a large semi-circular, meaning the central angle of the flexible bottom 201 is greater than 180°. In the embodiment where the flexible bottom 201 is a small semi-circular, the central angle of the flexible bottom 201 can be greater than 90° to avoid the situation where the length of the flexible bottom 201 is too short, resulting in poor anti-tooth-jamming effect. In embodiments where the flexible bottom 201 is a semi-circular arc, the central angle of the flexible bottom 201 can be less than 270° to avoid the flexible bottom 201 being too long, which would affect the wrapping effect on the support portion 101 or cause the support portion 101 to be too small.

[0050] Please refer to Figure 2 and Figure 4The bristle component 30 includes a bristle-forming plate 301 and bristles 302 disposed on the bristle-forming plate 301. This application does not specifically limit the material of the bristle-forming plate 301. Exemplarily, the bristle-forming plate 301 can be made of metal, alloy, plastic, wood, or any combination of two of these materials. This application does not specifically limit the material of the bristles 302. Exemplarily, the bristles 302 can be made of nylon, PP plastic, bamboo charcoal, or natural pig bristles. The shape of the bristle-forming plate 301 includes, but is not limited to, a circular plate, an elliptical plate, a square plate, or a rectangular plate. In one possible embodiment, the bristle-forming plate 301 can be elliptical. The bristles 302 are disposed on the bristle-forming plate 301 in ways including, but not limited to, the bristles 302 being heat-fused to the bristle-forming plate 301, or the bristles 302 being bonded to the bristle-forming plate 301, or the bristles 302 being integrally formed with the bristle-forming plate 301. The arrangement of the bristles 302 on the bristle board 301 includes, but is not limited to, straight, diagonal, or three-dimensional arrangement.

[0051] The flocking plate 301 and the flexible bottom 201 are located on opposite sides of the supporting portion 101. It can be understood that the flocking plate 301, the supporting portion 101, and the flexible bottom 201 are arranged in sequence. In other words, the flexible bottom 201 is located on the side of the supporting portion 101 opposite to the flocking plate 301.

[0052] The flocking plate 301 is connected to the support portion 101. The connection between the flocking plate 301 and the support portion 101 can be a detachable connection or a non-detachable connection. Detachable connections include, but are not limited to, snap-fit ​​connections, threaded connections, and magnetic connections. Non-detachable connections include, but are not limited to, bonding, welding, and fusion.

[0053] The brush head assembly 100 provided in this application includes a brush head body 10, a first flexible member 20, and a bristle member 30. The first flexible member 20 is wrapped around the support portion 101 of the brush head body 10. The bristle plate 301 of the bristle member 30 is connected to the support portion 101. This achieves the connection of the brush head body 10, the first flexible member 20, and the bristle member 30, forming an integral and non-separable brush head assembly 100. At the same time, since the flexible bottom 201 of the first flexible member 20 and the bristle plate 301 of the bristle member 30 are located on opposite sides of the support portion 101, that is, the flexible bottom 201 is located on the side of the support portion 101 away from the bristle plate 301, the brush head body 10 is blocked by the flexible bottom 201 when the brush head assembly 100 is in use, and will not collide with the teeth. Moreover, the flexible bottom 201 is arc-shaped, so when the brush head assembly 100 rotates, the first flexible member 20 is also less likely to collide with the teeth, thereby effectively reducing the occurrence of tooth collisions caused by the brush head assembly 100. In addition, the flexibility of the flexible bottom 201 itself can also play a role in damping vibration when the first flexible member 20 hits the teeth, thereby improving the comfort of using the brush head assembly 100.

[0054] In one possible embodiment, such as Figure 6 As shown, Figure 6 for Figure 1 The diagram shows the structure of the first flexible member 20 in the brush head assembly 100. The first flexible member 20 also includes a flexible side portion 202 connected to the flexible bottom 201, and the flexible side portion 202 and the flexible bottom 201 form a semi-circular or U-shaped first flexible member 20.

[0055] The flexible side portion 202 surrounds the periphery of the support portion 101. It is understood that the flexible side portion 202 at least covers the periphery of the support portion 101. Optionally, the flexible side portion 202 is a straight annular shape or an arc annular shape. When the flexible side portion 202 is a straight annular shape, the flexible side portion 202 and the flexible bottom 201 form a U-shaped first flexible member 20. When the flexible side portion 202 is an arc annular shape, the flexible side portion 202 and the flexible bottom 201 form a semi-circular first flexible member 20. In this embodiment, when the flexible side portion 202 and the flexible bottom 201 form a U-shaped first flexible member 20, the flexible bottom 201 is a semi-circular arc or a small semi-circular arc; when the flexible side portion 202 and the flexible bottom 201 form a semi-circular first flexible member 20, the flexible bottom 201 is a small semi-circular arc. It should be noted that in this embodiment, the connection between different parts of the same structure refers to an integral connection, that is, the flexible bottom 201 and the flexible side portion 202 are integrally connected.

[0056] In this embodiment, the first flexible member 20 includes a connected flexible bottom 201 and a flexible side 202. The first flexible member 20 is semi-circular or U-shaped. While ensuring that the flexible bottom 201 is arc-shaped, which can reduce the occurrence of tooth knocking when the brush head assembly 100 rotates, the design of the flexible side 202 can improve the wrapping effect of the first flexible member 20 on the support part 101, and the flexible side 202 can wrap around the bristle board 301, thereby protecting the support part 101 and the bristle board 301, extending the service life of the brush head assembly 100, and improving the consistency of the appearance of the brush head assembly 100.

[0057] In one possible embodiment, please refer to Figure 7 and Figure 8 , Figure 7 for Figure 1 Another cross-sectional schematic diagram of the brush head assembly 100 shown. Figure 8 for Figure 3 A cross-sectional schematic diagram of the brush head assembly 100 is shown. A buffer portion is provided between the flexible bottom 201 and the support portion 101.

[0058] Optionally, one of the flexible bottom 201 and the support portion 101 protrudes towards the side of the other, so that a buffer portion is provided between the flexible bottom 201 and the support portion 101; or, the brush head assembly 100 further includes a buffer member located between the flexible bottom 201 and the support portion 101, the buffer member protruding towards the side of the flexible bottom 201, so that a buffer portion is provided between the buffer member and the flexible bottom 201, and / or, the buffer member protruding towards the side of the support portion 101, so that a buffer portion is provided between the buffer member and the support portion 101.

[0059] During use of the brush head assembly 100, the flexible bottom 201 is located between the support portion 101 and the user's teeth. In this embodiment, by providing a buffer portion between the flexible bottom 201 and the support portion 101, a cushioning effect can be provided when teeth rub against each other, further improving the comfort of using the brush head assembly 100. In addition, the buffer portion between the flexible bottom 201 and the support portion 101 also provides a cushioning effect when the brush head assembly 100 is touched, thereby improving the softness of the feel.

[0060] In one possible embodiment, please refer to Figure 6 and Figure 7 The flexible bottom 201 has a plurality of first protrusions 203 formed on the side facing the support portion 101, and there is a first gap between two adjacent first protrusions 203. The first protrusions 203 and the first gap form the buffer portion.

[0061] Understandably, the number of first protrusions 203 is greater than or equal to two. This application does not specifically limit the number of first protrusions 203. Optionally, multiple rows of first protrusions are formed on the side of the flexible bottom 201 facing the support portion 101, each row including at least one first protrusion 203; or, multiple columns of first protrusions are formed on the side of the flexible bottom 201 facing the support portion 101, each column including at least one first protrusion 203. The multiple rows of first protrusions are arranged along the width direction of the support portion 101, and the multiple columns of first protrusions are arranged along the length direction of the support portion 101. The height of the multiple first protrusions 203 can be the same, or can vary in a stepped manner, or can vary irregularly, etc. When the number of first protrusions 203 is greater than or equal to three, the spacing between two adjacent first protrusions 203 can be the same or different. For example, in an embodiment where multiple rows of first protrusions are formed on the side of the flexible bottom 201 facing the support portion 101, the spacing between adjacent rows of first protrusions may be the same or different, and the spacing between adjacent first protrusions 203 in each row may be the same or different. The length direction of the support portion 101 in this embodiment can be referred to... Figure 7 , Figure 8 As shown in the X-axis direction, the width direction of the bearing portion 101 can be referenced. Figure 7 , Figure 8 As shown in the Y-axis direction.

[0062] In this embodiment, a plurality of first protrusions 203 are formed on the side of the flexible bottom 201 facing the support portion 101. A first gap exists between two adjacent first protrusions 203, and the first protrusions 203 and the first gaps form a buffer portion. Since the material of the first protrusions 203 is also flexible, the buffering effect of the buffer portion formed between the flexible bottom 201 and the support portion 101 is better. In addition, since the flexible bottom 201 and the first protrusions 203 are an integral structure, the connection strength is higher, and thus the buffering of the buffer portion formed between the flexible bottom 201 and the support portion 101 is more stable.

[0063] In one possible embodiment, the first protrusion 203 abuts against the support portion 101. Optionally, all of the first protrusion 203 abuts against the support portion 101, or a portion of the first protrusion 203 abuts against the support portion 101, with a gap between the other portion of the first protrusion 203 and the support portion 101.

[0064] In this embodiment, by having the first protrusion 203 abut against the bearing portion 101, the bearing portion 101 and the flexible bottom 201 have a soft and cushioning effect in terms of use and feel. The first flexible member 20 can effectively support the bearing portion 101, avoiding a situation where the bearing portion 101 and the flexible bottom 201 are completely empty.

[0065] In one possible embodiment, such as Figure 9 As shown, Figure 9 for Figure 1 An exploded view of the brush head assembly 100 from another perspective. The bristle component 30 also includes at least one fastening part 303 disposed on the bristle plate 301, the fastening part 303 engaging with the support part 101.

[0066] It is understood that the number of fastening portions 303 can be one or more. Optionally, the number of fastening portions 303 can be multiple, including but not limited to two, three, or four. In one possible embodiment, at least one fastening portion 303 is formed in the length direction of the flocking plate 301 and at least one fastening portion 303 is formed in the width direction of the flocking plate 301. The length direction of the flocking plate 301 is the same as the length direction of the supporting portion 101, and the width direction of the flocking plate 301 is the same as the width direction of the supporting portion 101. In one possible embodiment, the fastening portion 303 may include a first sub-fastening portion and a second sub-fastening portion that are bent and connected. The first sub-fastening portion is connected between the flocking plate 301 and the second sub-fastening portion, and the second sub-fastening portion engages with the supporting portion 101. The bending angle between the first sub-fastening portion and the second sub-fastening portion is, but is not limited to, 90°, or greater than 45° and less than 90°, or greater than 90° and less than 135°.

[0067] In this embodiment, by including at least one fastening part 303 on the bristle plate 301 in the bristle component 30, the fastening part 303 engages with the bearing part 101, thereby achieving convenient assembly and disassembly of the bristle component 30 and the brush head body 10 while preventing the bristle component 30 from detaching from the brush head body 10.

[0068] In one possible embodiment, such as Figure 9 As shown, the supporting part 101 has at least one first mounting hole 113. The first flexible member 20 has at least one second mounting hole 204. The fastening part 303 passes through the second mounting hole 204 and the first mounting hole 113 in sequence, and engages with the side of the supporting part 101 opposite to the flocking plate 301.

[0069] Understandably, the fastening portion 303 of the bristle component 30 penetrates the first flexible component 20 and the supporting portion 101 of the brush head body 10. In this embodiment, the number of first mounting holes 113 can be equal to the number of fastening portions 303, and the number of second mounting holes 204 can be the same as the number of first mounting holes 113. This application does not specifically limit the shape of the first mounting holes 113 or the shape of the second mounting holes 204. For example, the shape of the first mounting hole 113 can be elliptical, circular, rectangular, square, or irregular, etc. The shape of the second mounting hole 204 can be elliptical, circular, rectangular, square, or irregular, etc. The shape of the first mounting hole 113 and the shape of the second mounting hole 204 can be the same or different. In this embodiment, the fastening portion 303 engages with the side of the supporting portion 101 away from the bristle plate 301, which can be a second sub-fastening portion abutting against the surface of the supporting portion 101 away from the bristle plate 301.

[0070] In this embodiment, the first flexible member 20 may further include a flexible fitting portion 205 connected to the flexible bottom 201, and the second mounting hole 204 may be provided on the flexible fitting portion 205. The flexible fitting portion 205 is located on the side of the bearing portion 101 opposite to the flexible bottom 201. The flexible fitting portion 205 and the flexible bottom 201 may be directly connected, or the flexible fitting portion 205 and the flexible bottom 201 may be indirectly connected through the flexible side portion 202.

[0071] By having the fastening part 303 pass through the second mounting hole 204 on the first flexible member 20 and the first mounting hole 113 on the support part 101 in sequence, and engage with the side of the support part 101 away from the bristle plate 301, the bristle part 30 is connected to both the brush head body 10 and the first flexible member 20, thus improving the reliability and tightness of the connection of the brush head assembly 100.

[0072] In another possible embodiment, please refer to Figure 8 and Figure 10 The brush head assembly 100 further includes a second flexible member 40, which is disposed between the support portion 101 and the flexible bottom 201.

[0073] This application does not specifically limit the material of the second flexible member 40. For example, the material of the second flexible member 40 can be silicone, rubber, or thermoplastic elastomer (TPE), etc. The hardness of the second flexible member 40 is less than the hardness of the brush head body 10. It is understood that the material of the second flexible member 40 is relatively soft, and the material of the brush head body 10 is relatively hard. Optionally, the material of the second flexible member 40 can be the same as the material of the brush head body 10. The second flexible member 40 is used to form a buffer portion between the support portion 101 and the flexible bottom 201. Specifically, the second flexible member 40 has a plurality of second protrusions 401 formed on the side facing the flexible bottom 201, and a second gap is formed between two adjacent second protrusions 401, the second protrusions 401 and the second gap forming the buffer portion.

[0074] Understandably, the number of second protrusions 401 is greater than or equal to two. This application does not specifically limit the number of second protrusions 401. Optionally, the second flexible member 40 has multiple rows of second protrusions formed on the side facing the flexible bottom 201, each row including at least one second protrusion 401; or, the second flexible member 40 has multiple columns of second protrusions formed on the side facing the flexible bottom 201, each column including at least one second protrusion 401. The multiple rows of second protrusions are arranged along the width direction of the supporting portion 101, and the multiple columns of second protrusions are arranged along the length direction of the supporting portion 101. The height of the multiple second protrusions 401 can be the same, or can vary in a stepped manner, or can vary irregularly, etc. When the number of second protrusions 401 is greater than or equal to three, the spacing between two adjacent second protrusions 401 can be the same or different. For example, in an embodiment where multiple rows of second protrusions are formed on the side of the second flexible member 40 facing the flexible bottom 201, the spacing between two adjacent rows of second protrusions may be the same or different, and the spacing between two adjacent second protrusions 401 in each row of second protrusions may be the same or different.

[0075] In this embodiment, multiple second protrusions 401 are formed on the side of the second flexible member 40 facing the flexible bottom 201, and a second gap is formed between two adjacent second protrusions 401. The second protrusions 401 and the second gap form a buffer portion. Since the material of the second protrusions 401 is flexible, the buffer portion formed between the second flexible member 40 and the flexible bottom 201 has a better buffering effect. In addition, since the materials of the second flexible member 40 and the first flexible member 20 are self-adhesive, the second protrusions 401 and the flexible bottom 201 can form an adhesive effect. This helps to reduce the gap between the second flexible member 40, the brush head body 10 and the first flexible member 20 while forming a buffer portion, thereby reducing the accumulation of water on the brush head assembly 100.

[0076] In one possible embodiment, the second protrusion 401 contacts the flexible bottom 201. Optionally, all of the second protrusion 401 contacts the flexible bottom 201, or a portion of the second protrusion 401 contacts the flexible bottom 201, with a gap between the other portion of the second protrusion 401 and the flexible contact.

[0077] In this embodiment, by having the second protrusion 401 contact the flexible bottom 201, the gap between the second protrusion 401 and the flexible bottom 201 is reduced, ensuring that the second protrusion 401 and the flexible bottom 201 can be bonded together. On the other hand, while ensuring that the second flexible member 40 and the flexible bottom 201 have a soft and cushioning effect in terms of use and feel, the second flexible member 40 can form an effective support between the supporting part 101 and the flexible bottom 201, avoiding a situation where there is a complete void between the supporting part 101 and the flexible bottom 201.

[0078] In one possible embodiment, such as Figure 8 As shown, the first flexible member 20 and the second flexible member 40 are nested together and integrally connected.

[0079] The nesting of the first flexible member 20 and the second flexible member 40 can be understood as the first flexible member 20 forming a recess at the position corresponding to the second protrusion 401 of the second flexible member 40, to enclose the second protrusion 401. In other words, the first flexible member 20 and the second flexible member 40 are in a concave-convex fit. Optionally, the second flexible member 40 is formed on the support portion 101 by a die-cutting process, and the first flexible member 20 is formed on the second flexible member 40 by a die-cutting process, so that the first flexible member 20 and the second flexible member 40 are integrally connected.

[0080] This embodiment further increases the tightness of the connection between the first flexible member 20 and the second flexible member 40 by nesting the first flexible member 20 and connecting them as a whole, thereby reducing the accumulation of water on the brush head assembly 100.

[0081] In one possible embodiment, please refer to Figure 8 and Figure 10 The brush head body 10 further includes at least one connecting post 114 disposed on the bearing portion 101, the connecting post 114 penetrating the second flexible member 40, and the connecting post 114 being connected to the first flexible member 20.

[0082] The shape of the connecting post 114 includes, but is not limited to, a cylindrical or prismatic shape. One end of the connecting post 114 is connected to the side of the bearing part 101 away from the flocking plate 301, and the other end of the connecting post 114 passes through the second flexible member 40 and is connected to the flexible bottom 201 of the first flexible member 20.

[0083] In this embodiment, the supporting part 101, the second flexible member 40, and the first flexible member 20 of the brush head body 10 are further connected together by the connecting post 114, which increases the mating area between the brush head body 10, the second flexible member 40, and the first flexible member 20, and can further improve the reliability and tightness of the connection between the brush head body 10, the second flexible member 40, and the first flexible member 20.

[0084] In one possible embodiment, the hardness of the first flexible member 20 is less than or equal to 20 degrees. Hardness refers to an object's ability to resist indentation by a harder object. In this embodiment, the hardness of the first flexible member 20 refers to its Shore hardness.

[0085] By making the hardness of the first flexible element 20 less than or equal to 20 degrees, the first flexible element 20 can be guaranteed to have good softness. In this way, even if the brush head assembly 100 collides with the teeth during use, the first flexible element 20 can effectively dampen the vibration, reduce damage to the user's teeth, and improve the user experience.

[0086] In one possible embodiment, the material of the first flexible member 20 includes silicone or a thermoplastic elastomer. By including silicone in the material of the first flexible member 20, the flexibility and vibration damping properties of the first flexible member 20 are maintained. Furthermore, due to the good chemical stability, non-toxicity, and odorless nature of silicone, the safety of the brush head assembly 100 can be ensured. By including thermoplastic elastomer in the material of the first flexible member 20, the flexibility and vibration damping properties of the first flexible member 20 are maintained. Furthermore, because thermoplastic elastomers are simple to process and environmentally friendly, this helps to reduce the cost of the brush head assembly 100 and minimize its environmental impact.

[0087] In one possible embodiment, the first flexible member 20 is bonded to the support portion 101.

[0088] Specifically, the flexible bottom 201 of the first flexible member 20 can be bonded to the supporting portion 101, and / or, the flexible side portion 202 of the first flexible member 20 can be bonded to the supporting portion 101, and / or, the flexible bonding portion 205 of the first flexible member 20 can be bonded to the supporting portion 101. The methods of bonding the first flexible member 20 to the supporting portion 101 include, but are not limited to, after the first flexible member 20 wraps around the supporting portion 101, adding adhesive between the first flexible member 20 and the supporting portion 101 to bond them together.

[0089] In this embodiment, by bonding the first flexible member 20 to the support portion 101, the connection effect between the first flexible member 20 and the brush head assembly 100 is further enhanced, the gap between the first flexible member 20 and the brush head body 10 is reduced, and the accumulation of water between the first flexible member 20 and the brush head body 10 can be reduced.

[0090] In one possible embodiment, the flocking plate 301 is bonded together with the first flexible member 20 and the supporting part 101.

[0091] The flocking plate 301 can be bonded to the first flexible member 20 by bonding the flocking plate 301 to the flexible side 202 of the first flexible member 20, and / or by bonding the flocking plate 301 to the flexible bonding portion 205 of the first flexible member 20. The flocking plate 301 can be bonded to the support portion 101 by bonding the surface of the flocking plate 301 to the side of the support portion 101 facing away from the flexible bottom 201.

[0092] In this embodiment, the tufting plate 301, the first flexible member 20, and the supporting part 101 are bonded together. The tufting plate 301 is directly bonded to the first flexible member 20 and directly bonded to the supporting part 101, which improves the stability of the tufting plate 301 and reduces the possibility of the tufting plate 301 detaching from the brush head body 10.

[0093] In one possible embodiment, such as Figure 11 As shown, at least one anti-overflow groove 115 is formed on the surface of the bearing portion 101 on the side opposite to the flexible bottom 201.

[0094] It is understood that the number of overflow channels 115 can be one or more. This application does not specifically limit the number of overflow channels 115. Exemplarily, the number of overflow channels 115 can be five, eight, ten, twelve, etc. In embodiments where the number of overflow channels 115 is multiple, the multiple overflow channels 115 can be evenly distributed on the surface of the support portion 101 away from the flexible bottom 201, or at least some of the overflow channels 115 can be evenly distributed on the surface of the support portion 101 away from the flexible bottom 201. In one possible embodiment, at least one overflow channel 115 can be disposed near the first mounting hole 113. Exemplarily, at least one overflow channel 115 can be provided on each of the opposite sides of the first mounting hole along the length direction of the support portion 101.

[0095] By forming an anti-overflow groove 115 on the support portion 101, the glue can be prevented from overflowing between the support portion 101 and the first flexible member 20, thus ensuring the aesthetic appearance of the outer surface of the brush head assembly 100. At the same time, it can also prevent excessive glue from flowing into the space between the support portion 101 and the flexible bottom 201 through the first mounting hole 113, which would affect the buffering effect of the buffer portion formed between the support portion 101 and the flexible bottom 201.

[0096] In one possible embodiment, please refer to Figure 6 and Figure 9 The first flexible member 20 further includes a flexible fitting portion 205 connected to the flexible bottom 201, the flexible fitting portion 205 fitting to the surface of the support portion 101 on the side opposite to the flexible bottom 201.

[0097] The flexible bonding portion 205 may be annular, including but not limited to circular annular, elliptical annular, square annular, and rectangular annular. The flexible bonding portion 205 is located inside the flexible side portion 202.

[0098] In this embodiment, the design of the flexible bonding part 205 is beneficial to the connection between the fastening part 303 of the bristle part 30 and the first flexible part 20, and also beneficial to the bonding between the first flexible part 20 and the bristle board 301 and the supporting part 101.

[0099] In one possible embodiment, please refer to Figure 6 and Figure 9 The brush head body 10 further includes a rotating connecting portion 102 connected to one end of the supporting portion 101. The first flexible member 20 also includes a flexible end portion 206 connected to the flexible bottom 201. The flexible end portion 206 encloses the rotating connecting portion 102.

[0100] The rotating connecting portion 102 is integrally connected to the supporting portion 101. It is understood that in this embodiment, the supporting portion 101 and the rotating connecting portion 102 form the brush head body 10. The flexible end 206 can be a hollow cylinder or a hollow prism, etc. The flexible end 206 can wrap around the rotating connecting portion 102 in various ways, including but not limited to the flexible end 206 being sleeved on the rotating connecting portion 102, or the flexible end 206 being directly formed on the outer peripheral surface of the rotating connecting portion 102. The flexible end 206 can wrap around the entire rotating connecting portion 102, or it can wrap around a portion of the rotating connecting portion 102. In this application, the flexible end 206 at least wraps around the end of the rotating connecting portion 102 closest to the supporting portion 101.

[0101] By including a rotating connection portion 102 in the brush head body 10 and a flexible end portion 206 in the first flexible member 20, which wraps around the rotating connection portion 102, the mating area between the first flexible member 20 and the brush head body 10 is further increased. This improves the connection effect between the first flexible member 20 and the brush head body 10, prevents the first flexible member 20 from falling off, and the flexible end portion 206 can protect the rotating connection portion 102, thus improving the corrosion resistance, moisture resistance, and drop resistance of the brush head assembly 100.

[0102] In addition, this application also provides an electric toothbrush. The electric toothbrush includes a handle and a brush head assembly 100 as described in any of the above embodiments. The brush head assembly 100 is connected to the handle.

[0103] The electric toothbrush provided in this application includes, but is not limited to, a vibrating electric toothbrush, a rotary electric toothbrush, or a sonic electric toothbrush. This application uses a vibrating electric toothbrush as an example. The brush head assembly 100 is rotatably connected to the handle. The brush head assembly 100 can vibrate relative to the handle and can also rotate relative to the handle.

[0104] The features mentioned above in the specification, claims, and drawings can be combined in any way as long as they are meaningful within the scope of this application. The advantages and features described with respect to the brush head assembly 100 are applied accordingly to the electric toothbrush.

[0105] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A brush head assembly, characterized in that, include: A brush head body, the brush head body including a support portion; A first flexible member, which encloses the supporting portion, includes a flexible bottom that is arc-shaped; and A bristle component, comprising a bristle-planting plate and bristles disposed on the bristle-planting plate, wherein the bristle-planting plate and the flexible bottom are respectively located on opposite sides of the support portion, and the bristle-planting plate is connected to the support portion.

2. The brush head assembly according to claim 1, characterized in that, The first flexible member further includes a flexible side portion connected to the flexible bottom, wherein the flexible side portion and the flexible bottom form a semi-circular or U-shaped first flexible member.

3. The brush head assembly according to claim 1, characterized in that, A buffer section is provided between the flexible bottom and the supporting part.

4. The brush head assembly according to claim 3, characterized in that, The flexible bottom has a plurality of first protrusions on the side facing the bearing portion, and there is a first gap between two adjacent first protrusions. The first protrusions and the first gaps form the buffer portion.

5. The brush head assembly according to claim 4, characterized in that, The first protrusion abuts against the bearing portion.

6. The brush head assembly according to claim 4, characterized in that, The bristle component also includes at least one fastening part disposed on the bristle plate, the fastening part engaging with the bearing part.

7. The brush head assembly according to claim 6, characterized in that, The supporting part has at least one first mounting hole, the first flexible member has at least one second mounting hole, and the fastening part passes through the second mounting hole and the first mounting hole in sequence, and is engaged with the side of the supporting part away from the flocking plate.

8. The brush head assembly according to claim 3, characterized in that, The brush head assembly further includes a second flexible member disposed between the support portion and the flexible bottom. The second flexible member has a plurality of second protrusions formed on the side facing the flexible bottom, and there is a second gap between two adjacent second protrusions. The second protrusions and the second gaps form the buffer portion.

9. The brush head assembly according to claim 8, characterized in that, The second protrusion contacts the flexible bottom.

10. The brush head assembly according to claim 8, characterized in that, The first flexible component and the second flexible component are nested together and integrally connected.

11. The brush head assembly according to claim 8, characterized in that, The brush head body also includes at least one connecting post disposed on the bearing portion, the connecting post passing through the second flexible member, and the connecting post being connected to the first flexible member.

12. The brush head assembly according to any one of claims 1 to 11, characterized in that, The hardness of the first flexible component is less than or equal to 20 degrees.

13. The brush head assembly according to any one of claims 1 to 11, characterized in that, The material of the first flexible element includes silicone or thermoplastic elastomer.

14. The brush head assembly according to any one of claims 1 to 11, characterized in that, The first flexible element is bonded to the bearing portion.

15. The brush head assembly according to claim 14, characterized in that, The flocking board is bonded together with the first flexible component and the load-bearing part.

16. The brush head assembly according to claim 14, characterized in that, At least one overflow groove is formed on the surface of the bearing portion on the side opposite to the flexible bottom.

17. The brush head assembly according to any one of claims 1 to 11, 15, and 16, characterized in that, The first flexible member further includes a flexible bonding portion connected to the flexible bottom, the flexible bonding portion being bonded to the surface of the bearing portion on the side opposite to the flexible bottom.

18. The brush head assembly according to any one of claims 1 to 11, 15, and 16, characterized in that, The brush head body also includes a rotating connecting part connected to one end of the bearing part, and the first flexible member also includes a flexible end connected to the flexible bottom, the flexible end wrapping around the rotating connecting part.

19. An electric toothbrush, characterized in that, It includes a handle and a brush head assembly according to any one of claims 1 to 18, the brush head assembly being connected to the handle.

Images