Electric toothbrush double-layer machine body structure

Abstract

The application provides an electric toothbrush double-layer machine body structure, belonging to the field of electric toothbrushes. The electric toothbrush double-layer machine body structure mainly comprises a machine body inner support and a machine body outer housing. By arranging the inner-outer two-layered structure of the machine body inner support and the machine body outer housing, a light guide part of the inner support of the inner layer can perform light guiding and display an indicator light, so as to form a gradient lighting effect, and the machine body outer housing of the outer layer can achieve appearance display and structural protection. Also, the body structure of the inner and outer layers is assembled and mounted, so that the overall disassembling and assembling are convenient.

Description

Electric toothbrush double-layer body structure Technical Field

[0001] The present invention relates to the field of electric toothbrushes, and in particular to a double-layer body structure of an electric toothbrush. Background Art

[0002] As a household appliance for oral care, an electric toothbrush is driven by a motor, which drives the toothbrush to swing and clean the oral cavity. The main structure includes a movement assembly, a body shell, a brush head, etc. The motor in the movement assembly drives the brush head to operate at a certain swing angle and vibration frequency through the motor shaft, thereby achieving teeth cleaning. With the development of electric toothbrushes, electric toothbrushes have more and more functions, such as overvoltage alarm, blue light whitening, posture detection, etc. Some functions need to be displayed and externalized through indicator lights to let users know whether their brushing posture or force is within a reasonable range. However, the body shell of a traditional electric toothbrush is a single-layer shell. It must be designed as an external surface for display and structural protection, and it must also cooperate with the light source for light guidance display, making it difficult to achieve a good balance. In addition, the existing indicator light area is small. Even if the light issues an alarm, it may be ignored, making these functions meaningless. For this reason, the present invention was born.

[0003] Summary of the Invention

[0004] One purpose of the present invention is to solve the problem that the single-layer housing in the existing structure cannot well take into account the appearance display, structural protection and light guide display in conjunction with the light source.

[0005] The second purpose of the present invention is to solve the problem that the existing indicator light area is small, and even if the light sounds an alarm, it may be ignored, making the rich functions of the electric toothbrush meaningless.

[0006] To this end, the present invention provides an electric toothbrush with a double-layer body structure, characterized in that it includes:

[0007] An inner housing bracket, wherein an inner housing cavity is formed inside the inner housing bracket for assembling and mounting a core assembly of the electric toothbrush, an output shaft of the core assembly extends outside the inner housing bracket, and the inner housing bracket at least comprises an inner housing light guide portion for guiding light for an indicator light display of the electric toothbrush;

[0008] The body shell includes at least a main shell and an upper cover, the main shell has a shell opening on the top, the main shell is mounted on the inner body bracket through the shell opening, and the main shell and the inner bracket are fixed along the circumferential direction, and the main shell has at least a body light-transmitting portion corresponding to the light-guiding portion of the inner bracket; the upper cover is sealed and connected to the shell opening and is positioned and installed on the inner body bracket, and the upper cover has an upper cover opening for the output shaft to extend.

[0009] Preferably, the bottom of the inner body bracket and the bottom of the movement assembly are assembled and fixed by a first snap assembly; the first snap assembly includes a first bayonet and a first spring buckle, the first spring buckle is provided on the movement assembly, and the first bayonet is formed at the bottom of the inner body bracket.

[0010] Preferably, the upper cover is assembled and fixed to the inner bracket of the fuselage through a second snap assembly; the second snap assembly includes a second spring buckle and a second slot, the second slot is provided on the inner bracket of the fuselage, and the second spring buckle is provided on the upper cover.

[0011] Preferably, it further includes a first guide assembly, the first guide assembly includes a first guide groove and a first guide rib, the first guide groove is provided on the inner bracket of the fuselage, and the first guide rib is provided on the upper cover.

[0012] Preferably, the main housing is assembled and fixed to the inner bracket of the fuselage through a third snap assembly; the third snap assembly includes a third snap and a third slot, the third snap is provided on the inner bracket of the fuselage, and the third slot is provided on the main housing.

[0013] Preferably, the inner support of the fuselage and the main housing are cylindrical structures.

[0014] Preferably, it also includes a waterproof screw assembly, which includes a waterproof screw and a waterproof sealing ring. The bottom of the main case has a waterproof screw hole, and the bottom of the movement bracket has a threaded fixing hole. The waterproof screw passes through the waterproof screw hole and is threadedly fixed to the threaded fixing hole. The waterproof sealing ring is pressed against the waterproof screw hole by the waterproof screw.

[0015] Preferably, it further includes a bottom cover, the bottom wall of the main housing forms a step surface, the bottom cover is sleeved and installed on the step surface, and covers the waterproof screw hole and the waterproof screw.

[0016] Preferably, the indicator light is implemented as a light display assembly, which is installed at the bottom of the core assembly. The light display assembly includes a mounting bracket, a light board and a plurality of lamp beads. The mounting bracket is installed on the core assembly, and the light board is installed on the mounting bracket. The plurality of lamp beads are provided on the light board and arranged in a ring shape, and the light of the lamp beads shines toward the light guide portion of the inner bracket.

[0017] Preferably, it further includes a second guide assembly, which includes a second guide rib and a second guide groove, the second guide rib is arranged at the bottom of the bracket inside the fuselage, and the second guide groove is arranged on the light panel and / or the mounting bracket.

[0018] Preferably, the inner bracket light-guiding portion is defined as part or all of the structure of the inner bracket of the body, and the body light-transmitting portion is defined as part or all of the structure of the main shell; the inner bracket light-guiding portion is implemented as a light-transmitting opaque light-guiding structure with a light-guiding agent added, and the main shell light-transmitting portion is implemented as a transparent structure.

[0019] The above technical solutions alone or in combination exhibit the following beneficial effects:

[0020] This solution sets up an inner and outer two-layer structure of the fuselage inner bracket and the fuselage outer shell. The inner layer of the inner bracket light-guiding part can guide the light to the indicator light to form a gradient lighting effect, and the outer fuselage outer shell can take into account both the appearance display and the structural protection; and the inner and outer two-layer fuselage structure is installed through assembly, and the overall disassembly and assembly are convenient.

[0021] The body structure is divided into two layers, the outer layer is a transparent structure, and the inner layer is a light-guiding structure. A lighting display component with a full circle of light sources is provided at the bottom, which can achieve a gradient light column effect. Compared with the indicator light of the transmission electric toothbrush, the light effect of this structure is more eye-catching and more beautiful.

[0022] The internal bracket, top cover and main casing of the fuselage are all connected by snap-fit ​​assembly, realizing full assembly, easy disassembly and assembly, and easy to replace accessories.

[0023] The bottom cover covers the bottom of the main housing, which on the one hand makes the bottom waterproof, and on the other hand can simultaneously cover the light display components to prevent light leakage from the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 shows the structural disassembly of the brush head and body of an electric toothbrush.

[0025] Figure 2 shows the structural disassembly of an electric toothbrush.

[0026] FIG3 shows an enlarged view of the light display assembly in FIG2 .

[0027] FIG4 shows a front view of the double-layer body structure of the electric toothbrush.

[0028] FIG. 5 shows a cross-sectional view taken along line AA in FIG. 4 .

[0029] FIG6 shows a schematic diagram of the upper cover structure of the double-layer body structure of the electric toothbrush.

[0030] FIG7 shows a structural diagram of the inner frame and the outer shell of the double-layer body structure of the electric toothbrush from one perspective.

[0031] FIG8 shows another perspective structural diagram of the inner body bracket and the outer body shell in the double-layer body structure of the electric toothbrush.

[0032] Figure 9 shows the structure of the inner bracket light guide part, light display assembly and body light-transmitting part in the double-layer body structure of the electric toothbrush.

[0033] in: DETAILED DESCRIPTION

[0034] The preferred embodiments described below are for illustrative purposes only, and those skilled in the art may readily conceive of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0035] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0036] Referring to Figures 1 to 9 , this embodiment provides a double-layered electric toothbrush body structure, primarily comprising an inner frame 1 and an outer frame 2. This double-layered structure achieves a coordinated light-guiding and light-transmitting display, and is assembled using a prefabricated design. Specifically, the inner frame 1 defines an inner cavity for assembling and mounting the electric toothbrush's core assembly 3. The output shaft 31 of the core assembly 3 extends outside the inner frame 1. The inner frame 1 includes at least an inner frame light-guiding portion 10 for guiding the light of the electric toothbrush's indicator light display. The outer frame 2 includes at least a main housing 21 and an upper cover 23. The main housing 21 has a housing opening at its top. The main housing 21 is sheathed within the inner frame 1 through the housing opening, and the two are circumferentially fixed. The main housing 21 includes at least a body light-transmitting portion 210 corresponding to the inner frame light-guiding portion 10. The upper cover 23 is sealedly connected to the housing opening and positioned within the inner frame 1. The upper cover 23 has an upper cover opening through which the output shaft 31 extends. By setting up an inner and outer layer structure of the fuselage inner bracket 1 and the fuselage outer shell 2, the inner layer of the inner bracket light guide part 10 can guide the light to the indicator light to form a gradient lighting effect, and the outer layer of the fuselage outer shell 2 can take into account both the appearance display and the structural protection; and the inner and outer layers of the fuselage structure are assembled and installed, and the overall disassembly and assembly are convenient.

[0037] The above solutions are essential for implementing this embodiment, and are further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0038] Refer to Figure 1. As is well known, an electric toothbrush consists of a core assembly (including a motor and circuit board), a brush head 4, and a power supply. The rapid rotation or vibration of the motor causes the brush head 4 to generate high-frequency vibration or rotation, breaking down the toothpaste into fine foam to clean the spaces between teeth. This embodiment focuses on the innovative body structure, so the operating principles of the electric toothbrush will not be fully described. Those skilled in the art should be familiar with the basic components of an electric toothbrush.

[0039] Please refer to Figures 4, 5 and 8. The movement assembly 3 is installed in the inner frame bracket 1. In order to achieve prefabricated assembly, as a preferred embodiment of this embodiment, the bottom of the inner frame bracket 1 and the bottom of the movement assembly 3 are assembled and fixed by a first snap assembly. Specifically, the first snap assembly includes a first snap-in 16 and a first spring 13. The first spring 13 is provided on the movement assembly 3, and the first snap 16 is formed on the bottom of the inner frame bracket 1. Furthermore, the movement assembly 3 includes a structural component, the movement bracket, and functional components such as a circuit board, a battery and a motor. The first spring 13 is provided at the bottom of the movement bracket. Furthermore, the inner frame bracket 1 is a cylindrical structure, and the first snap 16 is formed on the inner cylindrical wall of the inner frame bracket 1.

[0040] As described above, the inner bracket 1 of the fuselage is a cylindrical structure with openings at the top and bottom. The opening at the top facilitates the extension of the output shaft 31 of the movement assembly 3 to the outside and the installation of the upper cover 23, and the opening at the bottom facilitates the installation of the bottom indicator light.

[0041] Referring to Figures 4, 5, 6, and 7, in this embodiment, the upper cover 23 is assembled and fixed to the inner frame 1 via a second snap assembly. The second snap assembly includes a second spring catch 233 and a second slot 14. The second slot 14 is provided on the inner frame 1, and the second spring catch 233 is provided on the upper cover 23. Preferably, the second spring catch 233 is an elastic arm with a wedge-shaped fastener formed at its end to engage with the second slot 14.

[0042] Referring to Figures 6, 7, and 8, to facilitate the installation of the upper cover 23 and the inner frame 1, this embodiment further includes a first guide assembly comprising a first guide slot 15 and a first guide rib 232. The first guide slot 15 is provided on the inner frame 1, and the first guide rib 232 is provided on the upper cover 23. The positions of the second spring catch 233 and the second latching slot 14 are adapted to the relative positions of the first guide slot 15 and the first guide rib 232.

[0043] Similarly, the main housing 21 is also assembled to the inner frame 1 and sealed to the upper cover 23 via the upper cover sealing ring 231. Specifically, the main housing 21 is assembled and fixed to the inner frame 1 via a third snap assembly. The third snap assembly includes a third snap 12 (shown in Figure 7) and a third snap slot 212. The third snap 12 is provided on the inner frame 1, and the third snap slot 212 is provided on the main housing 21. Preferably, the main housing 21 is implemented as a cylindrical structure, with the third snap 12 molded on the outer wall of the inner frame 1 and the third snap slot 212 defined on the inner wall of the main housing 21.

[0044] Please refer to Figures 5, 7, 8 and 9. In this embodiment, the indicator light is arranged at the bottom of the fuselage. In order to achieve waterproofing of the bottom, the main casing 21 and the structural installation of the fuselage inner bracket 1 also include a waterproof screw assembly. The waterproof screw assembly includes a waterproof screw 61 and a waterproof sealing ring 62. The bottom of the main casing 21 has a waterproof screw hole 213 (as shown in Figure 8), and the bottom of the movement bracket has a threaded fixing hole. The waterproof screw 61 passes through the waterproof screw hole 213 and is threadedly fixed to the threaded fixing hole. The waterproof sealing ring 62 is pressed against the waterproof screw hole 213 by the waterproof screw 61 for sealing and waterproofing.

[0045] Furthermore, referring to Figures 8 and 9 , the main housing 2 also includes a bottom cover 22. The bottom wall of the main housing 21 forms a stepped surface 211. The bottom cover 22 is mounted on this stepped surface 211 and covers the waterproof screw holes 213 and waterproof screws 61. This not only provides auxiliary waterproofing of the bottom, but also covers the light display assembly 5 to prevent light leakage from the bottom. After the bottom cover 22 and stepped surface 211 are attached, they can be further bonded or ultrasonically connected.

[0046] Referring to Figures 2 and 3 , as a preferred embodiment of this embodiment, the indicator light is implemented as a light display assembly 5, which is mounted on the bottom of the movement assembly 3. The light display assembly 5 includes a mounting bracket 51, a light board 52, and a plurality of lamp beads 53. The mounting bracket 51 is mounted on the movement assembly 3, and the light board 52 is mounted on the mounting bracket 51. The plurality of lamp beads 53 are arranged in a circular pattern on the light board 52. Specifically, the mounting bracket 51 is snap-fitted to the movement bracket of the movement assembly 3, and both the light board 52 and the mounting bracket 51 are provided with perforations for waterproof screws 61 to pass through. The waterproof screws 61 stabilize the entire structure on the movement bracket and the main housing 21.

[0047] Please refer to Figure 3 in conjunction with Figures 7, 8 and 9. This is to achieve the guided installation of the inner fuselage bracket 1 and the movement assembly 3, and further to prevent the two from rotating relative to each other. This embodiment also includes a second guide assembly, which includes a second guide rib 11 and a second guide groove 521. The second guide rib 11 is provided at the bottom of the inner fuselage bracket 1, and the second guide groove 521 is provided on the lamp board 52 and / or the mounting bracket 51. Furthermore, in this embodiment, the second guide groove 521 is implemented on the lamp board 52. It should be noted that the lamp board 52 is an integrated circuit board for installing the lamp beads 53, and its PCB board body can be structurally modified to meet the implementation of the second guide groove 521.

[0048] There is no limit to the number of the first guide assembly, the second guide assembly, the first snap assembly, the second snap assembly and the third snap assembly 12 in actual implementation, which is specifically confirmed according to the mold design.

[0049] Please refer to Figure 9. In this embodiment, the inner bracket 1 evenly guides the indicator light of the light display assembly 5, displaying a light column through the outer housing 2. The inner bracket light-guiding portion 10 is defined as part or all of the structure of the inner bracket 1; similarly, the body light-transmitting portion 210 is defined as part or all of the structure of the main housing 21. In this embodiment, all structural components are integrally injection-molded. For ease of manufacturing and cost savings, the inner bracket light-guiding portion 10 is located at the bottom of the inner bracket 1 near the light display assembly 5. Light from the light display assembly 5 is directed toward the inner bracket light-guiding portion 10. In this embodiment, the body light-transmitting portion 210 is the entire main housing 21.

[0050] Furthermore, the light-guiding portion 10 of the inner bracket is implemented as a light-transmitting opaque light-guiding structure with a light-guiding agent added, and the light-transmitting portion of the main housing 21 is implemented as a transparent structure. Specifically, the inner bracket 1 of the fuselage can be injection-molded by adding a light-guiding agent to an injection molding material, which facilitates light display. The injection molding material gives the entire fuselage a certain molding strength and also plays a protective role. For example, PP plastic is used for injection molding with a light-guiding agent added. It should be noted that the light-guiding agent here includes what are commonly called brighteners, light-leveling agents, light-uniforming agents and light diffusers on the market. Its purpose is to increase the scattering and transmission of light, shield the light source and the glare light source, and at the same time, enable the entire inner bracket 1 of the fuselage to emit a softer, more beautiful and elegant light, achieving a light-transmitting opaque and comfortable effect. For example, acrylic, styrene and acrylic resin light diffusers.

[0051] Furthermore, the main housing 21 can be made of one of polycarbonate, polymethyl methacrylate and polypropylene, and can be combined with electroplating or laser texturing to achieve beautiful surface patterns, and then combined with the light-guiding effect of the bracket 1 inside the body to present a more beautiful lighting effect.

[0052] The beneficial effects of this embodiment are:

[0053] This solution sets up an inner and outer layer structure of the fuselage inner bracket 1 and the fuselage outer shell 2. The inner layer of the inner bracket light guide part 10 can guide the light to the indicator light to form a gradient lighting effect, and the outer layer of the fuselage outer shell 2 can take into account both the appearance display and the structural protection; and the inner and outer layers of the fuselage structure are assembled and installed, and the overall disassembly and assembly are convenient.

[0054] The body structure is divided into two layers, the outer layer is a transparent structure, and the inner layer is a light-guiding structure. A light display component 5 with a full circle of light sources is provided at the bottom, which can achieve a gradient light column effect. Compared with the indicator light of the transmission electric toothbrush, the light effect of this structure is more eye-catching and more beautiful.

[0055] The inner bracket 1, the upper cover 23 and the main housing 21 of the fuselage are all connected by snap-fit ​​assembly, realizing full assembly, easy disassembly and assembly, and easy replacement of accessories.

[0056] The bottom cover 22 covers the bottom of the main housing 21 , which can achieve bottom waterproofing on one hand, and can also cover the light display component 5 on the other hand to prevent light leakage from the bottom.

[0057] Those skilled in the art will appreciate that the embodiments of the present invention described above are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. The electric toothbrush has a double-layer body structure, characterized in that: include: An inner frame of the body, wherein an inner frame cavity is formed inside the inner frame of the body for assembling and installing a core assembly of the electric toothbrush, an output shaft of the core assembly extends outside the inner frame of the body, and the inner frame of the body at least has an inner frame light guide portion for guiding light of an indicator light of the electric toothbrush; The body shell at least includes a main shell and an upper cover, the main shell has a shell opening on the top, the main shell is sleeved on the body inner bracket through the shell opening, and the main shell and the inner bracket are fixed along the circumferential direction, the main shell has at least a body light-transmitting part corresponding to the light-guiding part of the inner bracket; the upper cover is sealed and connected to the shell opening and is positioned and installed on the body inner bracket, and the upper cover has an upper cover opening for the output shaft to extend out.

2. The double-layer body structure of the electric toothbrush according to claim 1, characterized in that: The bottom of the inner body bracket and the bottom of the movement assembly are assembled and fixed by a first buckle assembly; the first buckle assembly includes a first bayonet and a first spring buckle, the first spring buckle is arranged on the movement assembly, and the first bayonet is formed at the bottom of the inner body bracket.

3. The double-layer body structure of the electric toothbrush according to claim 1, characterized in that: The upper cover is assembled and fixed to the inner bracket of the fuselage through a second buckle assembly; the second buckle assembly includes a second spring buckle and a second slot, the second slot is arranged on the inner bracket of the fuselage, and the second spring buckle is arranged on the upper cover.

4. The double-layer body structure of the electric toothbrush according to claim 3, characterized in that: It also includes a first guide assembly, which includes a first guide groove and a first guide rib. The first guide groove is arranged on the inner bracket of the fuselage, and the first guide rib is arranged on the upper cover.

5. The double-layer body structure of the electric toothbrush according to claim 1, characterized in that: The main housing is assembled and fixed with the inner bracket of the fuselage through a third buckle assembly; the third buckle assembly includes a third buckle and a third slot, the third buckle is arranged on the inner bracket of the fuselage, and the third slot is arranged on the main housing.

6. The double-layer body structure of an electric toothbrush according to any one of claims 1 to 5, characterized in that: The inner support of the fuselage and the main housing are cylindrical structures.

7. The double-layer body structure of the electric toothbrush according to claim 6, characterized in that: It also includes a waterproof screw assembly, which includes a waterproof screw and a waterproof sealing ring. The bottom of the main housing is provided with a waterproof screw hole, and the bottom of the movement bracket is provided with a threaded fixing hole. The waterproof screw passes through the waterproof screw hole and is threadedly fixed in the threaded fixing hole. The waterproof sealing ring is fixed in the waterproof screw hole by the waterproof screw.

8. The double-layer body structure of the electric toothbrush according to claim 7, characterized in that: It also includes a bottom cover, the bottom wall of the main housing forms a step surface, the bottom cover is sleeved and installed on the step surface, and covers the waterproof screw hole and the waterproof screw.

9. The double-layer body structure of the electric toothbrush according to claim 7, characterized in that: The indicator light is implemented as a light display component, which is installed at the bottom of the movement component. The light display component includes a mounting bracket, a light board and a plurality of lamp beads. The mounting bracket is installed on the movement component, and the light board is installed on the mounting bracket. The plurality of lamp beads are arranged on the light board in a ring shape, and the light of the lamp beads shines toward the light guide portion of the inner bracket.

10. The double-layer body structure of the electric toothbrush according to claim 9, characterized in that: It also includes a second guide assembly, which includes a second guide rib and a second guide groove. The second guide rib is arranged at the bottom of the bracket inside the fuselage, and the second guide groove is arranged on the light panel and / or the mounting bracket.

11. The double-layer body structure of an electric toothbrush according to claim 6, characterized in that: The inner bracket light-guiding portion is defined as part or all of the structure of the inner bracket of the body, and the body light-transmitting portion is defined as part or all of the structure of the main shell; the inner bracket light-guiding portion is implemented as a light-transmitting opaque light-guiding structure with light-guiding agent added, and the main shell light-transmitting portion is implemented as a transparent structure.

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