Electric toothbrush

Abstract

The utility model discloses an electric toothbrush which comprises a handle shell, a machine core assembly, a brush head and an elastic piece, the handle shell is provided with a containing cavity and a via hole communicated with the containing cavity, the machine core assembly comprises a driving piece at least partially arranged in the containing cavity, and the output end of the driving piece penetrates through the via hole, extends out of the handle shell and is connected with the brush head. The output end drives the brush head to move, the output end is sleeved with the elastic piece, at least one part of the outer circumferential face of the elastic piece abuts against the inner circumferential wall of the through hole, the brush head keeps abutting against the elastic piece, and the elastic piece is of an annular groove structure. By arranging the elastic piece, the waterproof effect is achieved, meanwhile, the brush head and the elastic piece are kept in abutting connection, no gap exists between the brush head and the elastic piece, and the phenomenon that the installation and waterproof effects of the elastic piece are affected due to the fact that the output end collides with the handle shell due to vibration is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to toothbrushes, and particularly relates to an electric toothbrush. Background Art

[0002] As people's living standards improve, oral cleaning appliances such as electric toothbrushes have become widely popular as electronic personal care products. An electric toothbrush typically includes a handle, a vibrating motor, and a brush head. The brush head is connected to the output end of the vibrating motor, which drives the brush head to vibrate, thereby cleaning the user's oral cavity.

[0003] Existing electric toothbrushes have a gap between the brush head and the handle to prevent direct contact between the brush head and the handle housing. This can cause noise from the brush head and handle housing colliding during vibration, negatively impacting the user experience. If the gap is too large, the motor output terminal will be exposed, affecting the structural strength and aesthetic appearance of the electric toothbrush.

[0004] Therefore, it is necessary to improve the prior art to overcome the above defects. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an electric toothbrush, which includes a handle shell having an accommodating cavity and a through hole connected to the accommodating cavity; a movement assembly, including a driving member at least partially arranged in the accommodating cavity; a brush head, the output end of the driving member passes through the through hole and extends out of the handle shell to be connected to the brush head, and the output end drives the brush head to move in the circumferential and / or axial direction; an elastic member, the elastic member is sleeved on the output end, the outer circumferential surface of at least a part of the elastic member abuts the inner circumferential wall of the through hole, the brush head and the elastic member remain in abutment, and the elastic member has an annular groove with a notch facing the brush head.

[0006] In one specific embodiment, the elastic member includes an internal waterproof structure and an external waterproof structure. The internal waterproof structure is sleeved on the output end, and the outer peripheral surface of the external waterproof structure abuts the inner wall surface of the through hole. The elastic member also includes an elastic portion disposed between the internal and external waterproof structures. The internal waterproof structure is connected to the external waterproof structure via the elastic portion. The elastic portion is formed with an annular groove with a notch facing the brush head. The wall thickness of the elastic portion is less than or equal to half the wall thickness of the internal and external waterproof structures.

[0007] In a specific embodiment, the internal waterproof structure has a mounting groove, and the electric toothbrush further includes a limiting member, which is arranged inside the mounting groove and provides a clamping force for fixing the internal waterproof structure to the output end.

[0008] In a specific embodiment, the end of the internal waterproof structure facing the brush head has an internal support surface, and when the output end drives the brush head to move in the circumferential direction and / or axial direction, the brush head maintains contact with the internal support surface.

[0009] In a specific embodiment, the brush head includes a brush rod portion, which has a mounting hole, and the output end portion extends into the interior of the mounting hole and is fixedly connected to the brush rod portion; a brush head portion, which is arranged on the side of the brush rod portion away from the handle shell, and has head bristles, and the brush rod portion has tail bristles on the end face of the side facing the handle shell.

[0010] In a specific embodiment, the tail bristles are in an annular structure; or the tail bristles are formed into multiple bundles, and the multiple bundles of tail bristles are spaced apart along the circumference of the output end.

[0011] In a specific embodiment, the brush head includes a brush head portion, which includes a counterweight, a hard plastic part and a flexible part; the counterweight is wrapped by the hard plastic part, and the hard plastic part is wrapped by the flexible part; the hard plastic part and the flexible part are transparent or translucent materials.

[0012] The utility model provides an electric toothbrush, which includes a handle shell, a core assembly, a brush head and an elastic member. The handle shell has a accommodating cavity and a through hole connected to the accommodating cavity. The core assembly includes a driving member at least partially arranged in the accommodating cavity. The output end of the driving member extends through the through hole to the handle shell and is connected to the brush head. The output end drives the brush head to move in a circumferential and / or axial direction. The elastic member is sleeved on the output end. A light-transmitting structure is provided on the side of the handle shell facing the brush head. The electric toothbrush also includes a light-emitting member and a light-guiding member arranged in the accommodating cavity. Light emitted by the light-emitting member passes through the light-guiding member and is emitted outward by the light-transmitting structure.

[0013] In a specific embodiment, the light-transmitting structure is the annular part at the upper end of the handle shell near the through hole. The light-transmitting structure is formed into a light-transmitting area by laser engraving after spraying. The brush rod part of the brush head is made of transparent or translucent material, and the brush rod part corresponds to the light-transmitting structure.

[0014] In a specific embodiment, the electric toothbrush also includes an elastic part, which includes an internal waterproof structure and an external waterproof structure. The internal waterproof structure is sleeved on the output end, and the outer peripheral surface of the external waterproof structure abuts the inner wall surface of the through hole. The elastic part also includes an elastic part arranged between the internal waterproof structure and the external waterproof structure. The internal waterproof structure is connected to the external waterproof structure through the elastic part, and the elastic part forms an annular groove with a notch arranged toward the brush head, wherein the wall thickness of the elastic part is less than or equal to half of the wall thickness of the internal waterproof structure and the external waterproof structure.

[0015] In a specific embodiment, the brush head includes a hard plastic part, a hair-planting part and a flexible part; the hair-planting part is welded and fixed to the hard plastic part, and the flexible part at least covers part of the hard plastic part and part of the hair-planting part, and is injection-molded and fixed to the hard plastic part and the flexible part.

[0016] With this arrangement, the hair-planting part is welded and fixed to the hard plastic part, and the flexible part covers the hard plastic part and the hair-planting part, and is injection-molded and fixed to the hair-planting part and the hard plastic part, so that the flexible part can seal the part in contact with the hard plastic part and the hair-planting part, and the hair-planting part and the hard plastic part are stably connected, which is beneficial to enhancing the reliability of the electric toothbrush head and the long-term use of the electric toothbrush; and the injection molding of the soft rubber and the two can enhance the sealing of the brush head, prevent water stains from flowing into the inside of the brush head and breeding bacteria, which is beneficial to the healthy use of the user; the flexible part can also further prevent the brush head from hitting the teeth when swinging, which is beneficial to improving the comfort of use, and by connecting in this way, the flexible part does not need further holes, and the part of the brush head that contacts the user's mouth is basically soft rubber, which is beneficial to protecting the user's mouth.

[0017] In a specific embodiment, the brush head includes a hard plastic part, a hair-planted part and a flexible part; the flexible part is fixed to the hard plastic part by injection molding, the hair-planted part is clamped to the flexible part and abuts against the hard plastic part, and the flexible part at least covers part of the hard plastic part and part of the hair-planted part.

[0018] With this arrangement, the flexible part and the hard plastic part are fixed by injection molding, which enhances the connection stability and sealing between the two; and the bristle part is snap-connected and fixed to the flexible part, which reduces the process of preparing the brush head, and the bristle part can be removed later, so the user only needs to replace the bristle part, which reduces the replacement cost.

[0019] The technical solution provided by the utility model has the following advantages:

[0020] The electric toothbrush of the present application adopts an elastic part arranged between the output end and the handle shell. By setting the elastic part, it not only has a waterproof effect, but also the brush head and the elastic part are kept in abutment with no gap between the two, thereby avoiding the phenomenon of the output end colliding with the handle shell due to vibration, which in turn affects the installation of the elastic part and the waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the electric toothbrush of the present utility model;

[0023] Figure 2 This is a front view of the electric toothbrush of the present utility model;

[0024] Figure 3 for Figure 2 AA section view;

[0025] Figure 4 for Figure 3 Enlarged view of point B;

[0026] Figure 5 A cross-sectional view of the matching structure of the light-emitting element and the light-guiding element of the electric toothbrush of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the brush head of the present invention, wherein the tail bristles are arranged in multiple bundles;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the brush head of the present invention, wherein the tail bristles are arranged in a ring shape;

[0029] Figure 8 This is the front view of the brush head of the present utility model;

[0030] Figure 9 for Figure 8 BB cross-sectional view;

[0031] Figure 10 for Figure 9 Enlarged view of point D;

[0032] Figure 11 This is a schematic diagram of the structure of the counterweight block of the present invention that is partially exposed;

[0033] Figure 12 This is a schematic diagram of the installation structure of the head bristles and the counterweight block of the utility model;

[0034] Figure 13 This is another schematic diagram of the installation structure of the head bristles and the counterweight block of the utility model.

[0035] Description of reference numerals:

[0036] 10. Handle shell; 110. Through hole; 120. Light-transmitting area; 130. Light ring; 20. Elastic part; 210. Internal waterproof structure; 211. Mounting groove; 212. Internal support surface; 220. Elastic part; 230. External waterproof structure; 231. External support surface; 240. First arm section; 250. Second arm section; 260. Support structure; 30. Brush head; 310. Brush rod; 311. Mounting hole; 312. Tail bristles; 320. Brush head; 321. Head bristles; 322. Hard plastic part; 323. Bristle implantation; 324. Protrusion; 325. Recess; 326. Connecting part; 40. Limiting part; 50. Bracket; 60. Counterweight; 70. Flexible part; 80. Light-emitting part; 90. Light guide. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments may be combined with each other unless there is a conflict.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0040] Example 1

[0041] The electric toothbrush provided in the present application solves the problem in the prior art that there is a gap between the brush head and the handle housing, which causes noise to be generated due to collision when the electric toothbrush is working.

[0042] like Figures 1 to 11As shown, the electric toothbrush includes a handle housing 10, a core assembly, a brush head 30 and an elastic member 20. The handle housing 10 has a receiving cavity and a through hole 110 connected to the receiving cavity. The core assembly includes a driving member that is at least partially arranged in the receiving cavity. The output end of the driving member passes through the through hole 110 and extends out of the handle housing 10 to be connected to the brush head 30. The output end drives the brush head 30 to move in the circumferential and / or axial direction. The elastic member 20 is sleeved on the output end. The outer peripheral surface of at least a portion of the elastic member 20 abuts against the inner peripheral wall of the through hole 110, and the brush head 30 remains in abutment with at least a portion of the elastic member 20.

[0043] In this embodiment, the driving member is a motor, and the output end is the portion of the motor's output shaft extending from the handle housing 10. The driving member drives the brush head 30 to move in a predetermined manner via the output end. Of course, in some embodiments, the output end can also be a shaft structure that is drivingly connected to the motor's output shaft, such as a shaft structure with a diameter larger than the motor's output shaft required in specific scenarios, or a shaft structure used to increase the length of the motor's output shaft.

[0044] The elastic member 20 is made of an elastic material with a certain elastic deformation, and specifically can be made of plastic.

[0045] In this embodiment, the electric toothbrush of the present application adopts an elastic member 20 set between the output end and the handle housing 10. By setting the elastic member 20, not only does it have a waterproof effect; at the same time, the brush head 30 and the elastic member 20 are kept in contact with each other, and there is no gap between the two, thereby avoiding the output end from vibrating and colliding with the handle housing 10, thereby affecting the installation of the elastic member 20 and the waterproof effect.

[0046] Among them, the elastic member 20 includes an elastic part 220, which can undergo elastic deformation. During the operation of the electric toothbrush, the setting of the elastic part 220 can realize the fixed abutment between the external waterproof structure 230 of the elastic member 20 and the handle shell 10. The internal waterproof structure 210 of the elastic member 20 moves synchronously with the movement of the output end, further driving the elastic part 220 to deform. The internal waterproof structure 210 and the external waterproof structure 230 can be displaced relative to each other, which not only ensures the sealing between the handle shell 10 and the output end, but also due to the synchronous movement of the internal waterproof structure 210, the brush head 30 and the elastic member 20 maintain an abutment setting, thereby avoiding the collision between the brush head 30 and the handle shell 10, and thus avoiding the generation of noise.

[0047] In this embodiment, when the user is brushing his teeth, the output end of the driving member drives the brush head 30 to move according to a preset motion. It can be understood here that the preset motion can be a circumferential and / or axial motion. While the output end moves, the internal waterproof structure 210 is driven to move synchronously. The external waterproof structure 230 is relatively fixed to the handle housing 10. At this time, the elastic part 220 between the internal waterproof structure 210 and the external waterproof structure 230 produces elastic deformation to achieve relative movement between the internal waterproof structure 210 and the external waterproof structure 230.

[0048] like Figures 1 to 4 As shown, the internal waterproof structure 210 is sleeved on the output end, the outer peripheral surface of the external waterproof structure 230 abuts against the inner wall surface of the through hole 110, the elastic part 220 is arranged between the internal waterproof structure 210 and the external waterproof structure 230, and the internal waterproof structure 210 is connected to the external waterproof structure 230 through the elastic part 220.

[0049] Specifically, the elastic member 20 used in the present application has an internal waterproof structure 210, an external waterproof structure 230 and an elastic portion 220. The internal waterproof structure 210 is sleeved on the output end to prevent water from penetrating into the interior of the electric toothbrush from the gap outside the output end; the outer side surface of the external waterproof structure 230 abuts against the inner wall surface of the through hole 110 to prevent water from penetrating into the interior of the electric toothbrush from the inner wall surface of the through hole 110. The setting of the internal waterproof structure 210 and the external waterproof structure 230 ensures that no liquid will penetrate between the output end and the handle housing 10, thereby improving the sealing of the overall structure.

[0050] Among them, the internal waterproof structure 210 is an L-shaped inner sleeve structure, and the external waterproof structure 230 is an L-shaped outer sleeve structure. The internal waterproof structure 210 and the external waterproof structure 230 are arranged correspondingly to form an annular space, and the elastic part 220 is arranged inside the annular space.

[0051] In this embodiment, the internal waterproof structure 210 is fixedly connected to the output end. Specifically, the internal waterproof structure 210 is fixed to the output end through an interference fit. When the driver drives the output end to move in the axial or circumferential direction, the output end drives the internal waterproof structure 210 to move synchronously.

[0052] like Figure 3 and Figure 4 As shown, in order to improve the stability of the connection between the internal waterproof structure 210 and the output end, and thereby ensure synchronous movement of the two, the electric toothbrush also includes a limiter 40, and the internal waterproof structure 210 has an annular mounting groove 211. The limiter 40 is correspondingly clamped on the mounting groove 211, and the limiter 40 provides a clamping force for fixing the internal waterproof structure 210 and the output end.

[0053] In this embodiment, the elastic portion 220 is formed with an annular groove with its opening facing the brush head 30. The provision of the annular groove is conducive to improving the deformation ability of the elastic portion 220, thereby achieving relative movement between the internal waterproof structure 210 and the external waterproof structure 230 through elastic deformation in the elastic portion 220 area. The elastic portion 220 has an annular groove, and the elastic portion 220 is disposed between the internal waterproof structure 210 and the external waterproof structure 230. The elastic portion 220 can achieve relative displacement between the internal waterproof structure 210 and the external waterproof structure 230 through deformation. That is, while the output end drives the internal waterproof structure 210 to move, the annular groove on the elastic portion 220 deforms, thereby ensuring that the external waterproof structure 230 can be relatively fixed to the handle housing 10 and does not move. The provision of the elastic portion 220 ensures the stability of the installation of the elastic member 20. The provision of the annular groove on the elastic portion 220 is conducive to ensuring sealing while increasing the distance that the internal waterproof structure 210 can move axially with the output end, thereby increasing the travel range of the internal waterproof structure 210.

[0054] In this embodiment, the elastic portion 220 employs a thin-walled structure, forming an annular groove through the annular thin-walled structure. This thin-walled structure has greater ductility, facilitating elastic deformation of the elastic member 20. Consequently, when the output end undergoes circumferential or axial movement, such as rotation, vibration, and / or vertical movement, the internal waterproof structure 210 maintains contact with the brush head, preventing collision between the brush head 30 and the handle housing 10 and water from seeping into the interior of the electric toothbrush through the gap around the output end. Furthermore, due to the thin-walled structure of the elastic portion 220, the elastic member 20 imposes less load on the drive member during rotation, vibration, and / or vertical upward and downward movement. This means that the elastic member 20 less restricts the movement of the drive member, minimizing the impact on motor efficiency and indirectly increasing the battery life of the electric toothbrush. Furthermore, the thin-walled elastic portion 220's greater deformability prevents the elastic member 20 from being subjected to concentrated force, which could lead to rupture and failure, thereby extending the lifespan of the electric toothbrush.

[0055] In this embodiment, the wall thickness of the elastic portion 220 is smaller than the wall thickness of the inner waterproof structure 210 and the outer waterproof structure 230. More specifically, the wall thickness of the elastic portion 220 is less than or equal to half of the wall thickness of the inner waterproof structure 210 and the outer waterproof structure 230.

[0056] In this embodiment, the opening of the axial cross section of the annular groove on the elastic portion 220 is U-shaped, such as Figure 4 Of course, the structure is not limited to U-shaped, and may be rectangular, V-shaped, or the like.

[0057] In this embodiment, one end of the internal waterproof structure 210 facing the brush head 30 has an internal support surface 212 , and the internal support surface 212 abuts against the brush head 30 .

[0058] By abutting the brush head 30 against the internal support surface 212 of the internal waterproof structure 210, when the brush head 30 is driven to move at the output end, the brush head 30 and the internal support surface 212 always maintain abutment, thereby achieving no gap between the brush head 30 and the handle shell 10, avoiding the problem of noise generated by the collision between the brush head 30 and the handle shell 10.

[0059] In this embodiment, the brush head 30 at least partially abuts the external waterproof structure 230 and does not abut the handle housing 10. The external waterproof structure 230 has an external support surface 231 on one end facing the brush head 30. The external support surface 231 abuts the brush head 30. The brush head 30 may abut the entire external support surface 231, or it may abut a portion of the external support surface 231, at least so that the brush head 30 covers the notch of the annular groove. Because the brush head abuts only the elastic member and not the handle housing, not only is there no gap between the brush head 30 and the handle housing 10, thereby meeting the waterproof requirement, but also the brush head will not collide with the handle housing during vibration, thereby preventing it from generating noise.

[0060] like Figure 3 and Figure 4 As shown, the elastic member 20 has an axially connected first arm segment 240 and a second arm segment 250, at least a portion of the first arm segment 240 is arranged inside the through hole 110, and the second arm segment 250 is arranged inside the accommodating cavity. The connection between the first arm segment 240 and the second arm segment 250 forms an annular support structure 260, and the movement assembly also includes a bracket 50 arranged inside the handle housing 10, and the driving member is arranged on the bracket 50, and the bracket 50 and the handle housing 10 abut on both sides of the axial direction of the support structure 260.

[0061] In this embodiment, the first arm segment 240 is arranged inside the through hole 110, and the second arm segment 250 abuts between the bracket 50 and the handle housing 10, thereby achieving axial and radial fixation of the elastic member 20, which is beneficial to improving the stability of the fixation of the elastic member 20.

[0062] Example 2

[0063] This embodiment provides an electric toothbrush, which can be based on the above embodiment 1, but is not limited to the elastic member structure used in embodiment 1. Figure 5 As shown, the handle housing 10 has a light-transmitting structure on the side facing the brush head 30. The electric toothbrush also includes a light-emitting component 80 and a light-guiding component 90 arranged inside the handle housing 10. The light emitted by the light-emitting component 80 passes through the light-guiding component 90 and is emitted outward by the light-transmitting structure.

[0064] The light-emitting element 80 is a light source for emitting light. The light-emitting element 80 may be a ring-shaped light bar having multiple LED light sources. The light bar is located on the outer periphery of the output end, and the light source has a light-emitting angle of 120°. The light guide is usually made of a transparent or translucent light-guiding material.

[0065] Specifically, by adopting a structure in which the light-emitting component 80 and the light-guiding component 90 cooperate, the light emitted by the light-emitting component 80 is guided to the light-transmitting structure so as to be emitted from the light-transmitting structure for display; the light-transmitting structure is arranged on the side of the handle housing 10 facing the brush head 30 to avoid the problem of blocking the light-transmitting structure when holding the handle, thereby forming a better visual effect and ensuring that the light-transmitting structure is always easy to observe during use.

[0066] It is understood that the light emitting element 80 can provide light of different colors or different flashing frequencies to display different states of the electric toothbrush. For example, different operating modes, such as children's mode, have their own specific light colors, or different speed gears, such as high-speed mode, have a higher flashing frequency, etc., to achieve the effect of linking the working state of the electric toothbrush with the light display.

[0067] In this embodiment, the light-transmitting structure is arranged along the circumference of the through hole 110, and the light-transmitting structure is arranged on the outer periphery of the elastic member 20. The light-transmitting structure is formed into a ring structure. The light-transmitting structure of the ring structure forms a ring-shaped luminous effect, which is conducive to convenient observation and improves the user experience.

[0068] In this embodiment, the following implementation modes are provided according to different light-transmitting structures.

[0069] In a specific embodiment not shown in the figure, the light-transmitting structure is a part of the handle shell 10, located in the annular part of the upper end of the handle shell near the through hole 110. This part of the handle shell 10 is laser engraved after spraying to form a light-transmitting area 120. A part of the handle shell 10 is used to form the light-transmitting area 120 by laser engraving after spraying to allow light to pass through. No additional structure is required, the structure is simple, and the integrity is stronger.

[0070] In another embodiment (not shown), the light-transmitting structure is a transparent light ring 130. The light ring 130 is provided independently of the handle housing 10, that is, the light ring 130 is provided between the handle housing 10 and the elastic member 20. When parts need to be replaced, only the light ring 130 can be replaced, which is convenient for operation and can realize light control by replacing the light ring 130.

[0071] In this embodiment, the brush head 30, especially the brush rod 310, is made of transparent or translucent material. The transparent part corresponds to the light-transmitting structure. The light emitted by the light-transmitting structure is emitted toward the brush head 30. The light passes through the transparent material to enable the brush head 30 to display color. The working status of the electric toothbrush can be distinguished by the color of the brush head 30, which is convenient to use and improves the user experience.

[0072] Example 3

[0073] This embodiment provides an electric toothbrush that can be based on the above embodiments 1 and 2, but is not limited to the structures adopted in the above embodiments. Figures 6 to 11 As shown, the brush head 30 of the electric toothbrush includes a brush rod portion 310 and a brush head portion 320. The brush rod portion 310 is specifically provided with a mounting hole 311. The output end portion extends into the interior of the mounting hole 311 and is fixedly connected to the brush rod portion 310. The brush head portion 320 is arranged on the side of the brush rod portion 310 away from the handle housing 10. The brush head portion 320 has head bristles 321, and the end face of the brush rod portion 310 facing the handle housing 10 has tail bristles 312.

[0074] Among them, the brush rod part 310 is a hard rubber structure connected to the output end, and the hard rubber structure is provided with tail bristles 312 on the side facing the handle shell. The brush head part 320 has a hard rubber part 322 and head bristles 321. The hard rubber part 322 and the hard rubber structure of the brush rod part are integrally formed.

[0075] Specifically, the brush head 30 of the present application has head bristles 321 and tail bristles 312, wherein the head bristles 321 are used for brushing teeth. When the tail bristles 312 are in operation, the movement of the tail bristles 312 of the brush head 30 cleans the upper end area of ​​the handle housing, thereby preventing dirt from accumulating in the area between the brush head 30 and the handle housing. Since the area between the handle housing 10 and the brush head 30 is inconvenient to clean, the structural arrangement of the present application can achieve real-time cleaning of the area between the brush head 30 and the handle housing while the user is using the electric toothbrush, thereby achieving the effect of self-cleaning of the electric toothbrush.

[0076] In this embodiment, two different real-time modes are provided according to the structure of the tail bristles 312 .

[0077] In one specific implementation of this embodiment, Figure 7 As shown, the tail bristles 312 are formed into an annular structure. The tail bristles 312 arranged in an annular structure can achieve complete circumferential cleaning, thereby helping to improve cleaning efficiency.

[0078] In another specific implementation of this embodiment, Figure 6As shown, the tail bristles 312 are formed into multiple bundles, and the multiple bundles of tail bristles 312 are arranged at intervals along the circumference of the output end. The multiple bundles of bristles are arranged at intervals along the circumference so that when the brush head 30 vibrates, each bundle of bristles has a swinging stroke, and the multiple bundles of bristles cooperate to clean the area between the handle housing 10 and the brush head 30. The structural arrangement of the multiple bundles of bristles can achieve reasonable arrangement of the bristles to avoid the problem of bristle interference that affects cleaning efficiency.

[0079] The brush head of the electric toothbrush provided in this embodiment further includes a counterweight block 60 and a flexible member 70. The counterweight block 60 is disposed in the brush head portion 320. Specifically, Figure 10 As shown, the counterweight is wrapped by a hard plastic part 322, and the hard plastic part 322 is wrapped by a flexible part 70. Therefore, the exposed parts of the brush head are the head bristles and the flexible part.

[0080] The counterweight 60 can be a metal block, and the flexible member 70 is a soft rubber sleeve. By providing the counterweight 60 on the brush head 320, the brush head 320 has a certain weight, thereby facilitating balanced swinging of the brush head 320 during brushing, achieving stable cleaning of the teeth. The material of the flexible member 70 ensures that the brush head 320 does not cause discomfort or even harm to the user when it comes into contact with the user's teeth or mouth, as would be the case with a harder material.

[0081] In this embodiment, the hard plastic part and the flexible part 70 are transparent or translucent, and the metal-textured counterweight can be clearly observed from the outside, thereby enhancing the texture and aesthetics of the product.

[0082] like Figure 12 and 13 As shown, during the manufacturing process, the flexible component 70, the hard plastic component 322 and the implanted hair portion 323 of the head bristles have at least the following two molding methods.

[0083] like Figure 12 As shown, an ultrasonic treatment followed by a rubber coating method can be used. Specifically, after the bristles 321 on the head are implanted on the implanted portion 323, the implanted portion 323 and the hard plastic member 322 are welded and fixed at the connecting portion 326, specifically by ultrasonic welding, so that the implanted portion 323 is fixed to the hard plastic member 322. Then, the flexible member 70 is at least partially wrapped around the periphery of the implanted portion 323 and the hard plastic member 322 using an injection molding process, specifically a rubber coating process, and the flexible member 70 is injection-molded and fixed to the implanted portion 323 and the hard plastic member 322.

[0084] In this way, the flexible part 70 can seal the part in contact with the hard plastic part 322 and the hair-planting part 323. The hair-planting part 323 is stably connected to the hard plastic part 322, which is beneficial to enhancing the reliability of the electric toothbrush head 30 and the long-term use of the electric toothbrush; and the injection molding of the flexible part and the two can enhance the sealing of the brush head 30, prevent water stains from flowing into the inside of the brush head 30 and breeding bacteria, which is beneficial to the healthy use of the user; the flexible part 70 can also further prevent the brush head 30 from hitting the teeth when swinging, which is beneficial to improving the comfort of use, and by connecting in this way, the flexible part 70 does not need to be further opened, and the part of the brush head 30 that contacts the user's mouth is basically soft soft rubber, which is beneficial to protecting the user's mouth.

[0085] like Figure 13 As shown, another method of rubber coating of structural parts can be adopted. Specifically, after the bristles 321 on the head are completed on the hair-planting part 323, the hair-planting part 323 is clamped and fixed to the flexible part 70. For example, a protrusion 324 is provided on the periphery of the hair-planting part 323, and a recess 325 is provided on the inner side of the corresponding flexible part 70. During the rubber coating process, the flexible part 70 is wrapped around the periphery of the hair-planting part 323 and the hard rubber part 322 through the shape matching of the protrusion 324 and the recess 325. At the same time, the flexible part 70 is fixed to the hard rubber part 322 by injection molding, the hair-planting part 323 clamps the flexible part 70 and abuts against the hard rubber part 322, and the flexible part 70 at least covers part of the hard rubber part 322 and part of the hair-planting part 323.

[0086] The flexible part 70 and the hard plastic part 322 are fixed by injection molding to enhance the connection stability and sealing between the two; and the bristle part 323 is snap-connected and fixed to the flexible part 70, which reduces the process of preparing the brush head, and the bristle part 323 can be removed later, and the user only needs to replace the bristle part 323, which reduces the replacement cost.

[0087] In such Figure 12 、 Figure 13 In the above two brush head solutions, according to different working conditions, the flexible member 70 can cover the entire hard plastic member 322 and the hair-planting portion 323 , or can cover part of the hard plastic member 322 and part of the hair-planting portion 323 .

[0088] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those skilled in the art can make other variations or modifications without creative work, which should fall within the scope of protection of the present invention.

Claims

1. An electric toothbrush, characterized in that: include: The handle housing has an accommodating cavity and a through hole communicating with the accommodating cavity; a movement assembly, comprising a driving member at least partially disposed within the accommodating cavity; A brush head, wherein the output end of the driving member passes through the through hole, extends out of the handle housing and is connected to the brush head, and the output end drives the brush head to move in a circumferential direction and / or an axial direction; An elastic member is sleeved on the output end, an outer peripheral surface of at least a portion of the elastic member abuts against the inner peripheral wall of the through hole, the brush head maintains abutment with the elastic member, and the elastic member has an annular groove with a notch facing the brush head.

2. The electric toothbrush according to claim 1, wherein The elastic member includes an internal waterproof structure and an external waterproof structure, the internal waterproof structure is sleeved on the output end, the outer peripheral surface of the external waterproof structure abuts against the inner wall surface of the through hole, the elastic member also includes an elastic portion arranged between the internal waterproof structure and the external waterproof structure, the internal waterproof structure is connected to the external waterproof structure via the elastic portion, and the elastic portion is formed with the annular groove with a notch facing the brush head; Wherein, the wall thickness of the elastic portion is less than or equal to half of the wall thickness of the internal waterproof structure and the external waterproof structure.

3. The electric toothbrush according to claim 2, wherein: The internal waterproof structure is provided with a mounting groove, and the electric toothbrush further comprises a limiting member, which is arranged in the mounting groove and provides a clamping force for fixing the internal waterproof structure and the output end.

4. The electric toothbrush according to claim 2, wherein: The internal waterproof structure has an internal support surface at one end facing the brush head. When the output end drives the brush head to move in the circumferential direction and / or the axial direction, the brush head maintains contact with the internal support surface.

5. The electric toothbrush according to any one of claims 1 to 4, characterized in that The brush head comprises: A brush rod portion, wherein the brush rod portion specifically has a mounting hole, and the output end portion extends into the mounting hole and is fixedly connected to the brush rod portion; The brush head portion is arranged on a side of the brush rod portion away from the handle shell, the brush head portion has head bristles, and the end surface of the brush rod portion facing the handle shell has tail bristles.

6. The electric toothbrush according to claim 5, characterized in that The tail bristles are annular in structure; or The tail bristles are formed into a plurality of bundles, and the plurality of bundles of tail bristles are arranged at intervals along the circumference of the output end.

7. The electric toothbrush according to any one of claims 1 to 4, characterized in that The brush head comprises: The brush head comprises a counterweight, a hard plastic part and a flexible part; The counterweight is wrapped by the hard plastic part, and the hard plastic part is wrapped by the flexible part; The hard plastic part and the flexible part are made of transparent or translucent materials.

8. An electric toothbrush, characterized in that: include: The handle housing has an accommodating cavity and a through hole communicating with the accommodating cavity; a movement assembly, comprising a driving member at least partially disposed within the accommodating cavity; A brush head, wherein the output end of the driving member passes through the through hole, extends out of the handle housing and is connected to the brush head, and the output end drives the brush head to move in a circumferential direction and / or an axial direction; an elastic member, said elastic member being sleeved on said output end; The handle shell has a light-transmitting structure on the side facing the brush head. The electric toothbrush also includes a light-emitting component and a light-guiding component arranged in the accommodating cavity. The light emitted by the light-emitting component passes through the light-guiding component and is emitted outwardly from the light-transmitting structure.

9. The electric toothbrush according to claim 8, characterized in that The light-transmitting structure is the annular portion of the upper end of the handle housing close to the through hole, and the light-transmitting structure is formed into a light-transmitting area by spraying and then laser engraving; The brush rod portion of the brush head is made of transparent or translucent material, and the brush rod portion corresponds to a light-transmitting structure.

10. The electric toothbrush according to claim 8 or 9, characterized in that The electric toothbrush further includes an elastic member, the elastic member including an internal waterproof structure and an external waterproof structure, the internal waterproof structure being sleeved on the output end, the outer peripheral surface of the external waterproof structure being in contact with the inner wall surface of the through hole, the elastic member further including an elastic portion disposed between the internal waterproof structure and the external waterproof structure, the internal waterproof structure being connected to the external waterproof structure via the elastic portion, the elastic portion being formed with an annular groove with a notch facing the brush head; Wherein, the wall thickness of the elastic portion is less than or equal to half of the wall thickness of the internal waterproof structure and the external waterproof structure.

11. The electric toothbrush according to claim 1 or 8, characterized in that The brush head includes a hard plastic part, a hair-planting part and a flexible part; the hair-planting part is welded and fixed to the hard plastic part, and the flexible part at least covers part of the hard plastic part and part of the hair-planting part, and is injection-molded and fixed to the hard plastic part and the flexible part.

12. The electric toothbrush according to claim 1 or 8, characterized in that The brush head includes a hard plastic part, a hair-planting part and a flexible part; the flexible part is injection-molded and fixed to the hard plastic part, the hair-planting part is clamped to the flexible part and abuts against the hard plastic part, and the flexible part at least covers part of the hard plastic part and part of the hair-planting part.

Images