Toothbrush head and electric toothbrush

Abstract

The utility model discloses a toothbrush head and an electric toothbrush, and relates to the technical field of electric toothbrushes. The toothbrush head comprises a rod part and a brush part, the upper end of the rod part is connected with the brush part, the rod part comprises a tubular shell and a supporting piece, and the supporting piece is arranged in the tubular shell; the supporting piece comprises a connecting column and a supporting part, and the connecting column is arranged on the inner side of the tubular shell and extends in the direction towards the brush part; the supporting part is arranged on the outer side wall of the connecting column in a protruding mode and supports the tubular shell. A weight reduction groove is formed in the outer side wall of the supporting part and the outer side wall of the connecting column in a surrounding mode so that a vacant area can be formed in the weight reduction groove between the connecting column and the tubular shell. The areas where the weight reducing grooves are located and the areas where the supporting parts are located are alternately distributed along the periphery of the connecting column. According to the toothbrush head, the firmness of connection between composition structures of the toothbrush head and the light weight of the toothbrush head can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric toothbrushes, in particular to a toothbrush head and an electric toothbrush. BACKGROUND

[0002] At present, an electric toothbrush generally comprises a toothbrush head and a toothbrush handle, a driving motor is arranged in the toothbrush handle, and the driving motor drives the toothbrush head to vibrate to clean teeth through a driving rod.

[0003] Among them, the toothbrush head generally comprises a tubular shell and a support part, the support part is arranged in the tubular shell and supports the tubular shell, and the driving rod is connected to the support part to drive the toothbrush head to vibrate under the driving of the driving motor to clean teeth.

[0004] However, a toothbrush head with excessive weight is not conducive to the driving motor driving the toothbrush head to vibrate, thereby reducing the cleaning effect of the toothbrush head on teeth. Therefore, how to reduce the weight of the toothbrush head is still a technical problem to be solved by those skilled in the art. SUMMARY

[0005] Therefore, in order to solve the above technical problems, the present application provides a toothbrush head and an electric toothbrush.

[0006] In order to solve the above technical problems, one of the technical solutions adopted by the present application is to provide a toothbrush head, which comprises a rod part and a brush part, the upper end of the rod part is connected to the brush part, the rod part comprises a tubular shell and a support part, and the support part is arranged in the tubular shell; the support part comprises a connecting column and a support part, the connecting column is arranged on the inner side of the tubular shell and extends in the direction towards the brush part; the support part is protrusively arranged on the outer side wall of the connecting column and supports the tubular shell; the support part and the outer side wall of the connecting column surround a weight-reducing groove, so that an empty area is formed between the connecting column and the tubular shell in the weight-reducing groove; the area where the weight-reducing groove is located and the area where the support part is located are alternately distributed along the outer periphery of the connecting column.

[0007] In order to solve the above technical problems, another technical solution adopted by the present application is to provide an electric toothbrush, which comprises the above toothbrush head.

[0008] Beneficial effects: Different from the prior art, the present application has at least the following two aspects of beneficial effects. First, the weight-reducing groove can reduce the weight of the support part, thereby improving the cleaning effect of the toothbrush head on teeth. Second, the area where the weight-reducing groove is located and the area where the support part is located are alternately distributed along the outer periphery of the connecting column, so that the support part can more firmly support the tubular shell through the support part, thereby improving the transmission effect between the driving rod and the toothbrush head. Therefore, the present application can improve the firmness of the connection between the constituent structures of the toothbrush head and the light weight of the toothbrush head. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1is a cross-sectional structure diagram of the electric toothbrush of the present application;

[0010] Figure 2 is Figure 1 is an enlarged diagram of region A in

[0011] Figure 3 is Figure 2 is a diagram of the first to fourth weight-reducing grooves and the first to seventh support portions in the region where

[0012] Figure 4 is a structure diagram of the support member of the electric toothbrush of the present application, Figure 4 as viewed from one side of the outer periphery of the support member;

[0013] Figure 5 is a structure diagram of the support member of the electric toothbrush of the present application, Figure 5 as viewed from the other side of the outer periphery of the support member;

[0014] Figure 6 is a side view diagram of the electric toothbrush of the present application;

[0015] Figure 7 is an exploded view diagram of the electric toothbrush of the present application;

[0016] Figure 8 is Figure 7 is an enlarged diagram of region C in

[0017] Figure 9 is a structure diagram of the toothbrush head of the electric toothbrush of the present application, Figure 9 in which the support member is not shown;

[0018] Figure 10 is an enlarged diagram of the region where the brush portion of the electric toothbrush of the present application is located, Figure 10 as viewed along the length direction of the needle bristles, Figure 10 in which the support member is not shown;

[0019] Figure 11 is a structure diagram of the neck light-emitting assembly of the electric toothbrush of the present application;

[0020] Figure 12 is Figure 1 is an enlarged diagram of region B in

[0021] Figure 13 is Figure 1 is a cross-sectional diagram of the region where region B is located, as viewed in the other direction;

[0022] Figure 14 is a structure diagram of the bottom cover assembly of the electric toothbrush of the present application;

[0023] Figure 15 is an exploded schematic view of a bottom cover assembly of the electric toothbrush of the present application;

[0024] Figure 16 is a structural schematic view of a first cover assembly of the electric toothbrush of the present application, Figure 16 viewed from the lower side of the first cover assembly.

[0025] BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Electric toothbrush 10; drainage gap 11; toothbrush handle 100; first annular end face 101; toothbrush head 200; second annular end face 201; neck light-emitting assembly 300; annular circuit board 310; first light-emitting element 320; second light-emitting element 330;

[0027] Handle shell 110; upper end opening 111; button arrangement side 112; button avoidance side 113; button avoidance opening 114; bottom cover assembly 120; first cover assembly 121; second cover assembly 122; annular seal 123; circuit board 130; drive motor 140; drive rod 141; battery 150; charging connector 160; strip-shaped circuit board 170; buffer 180; barrel portion 181; ring portion 182; button 190; movement support 400;

[0028] First mounting groove 1211; charging socket 1212; accommodation groove 1213; guide surface 12131; base 1214; guide post 1215; guide hole 12151; second clamping block 1216; second mounting groove 1217; mounting post 1218; third clamping arm 1219; limiting block 511; annular flange portion 512; waterproof air-permeable membrane 513; cover portion 1221; poking portion 1222; avoidance space 1223; second clamping arm 1224; plug-in sleeve 1225;

[0029] Rod portion 210; tubular shell 211; support 212; connecting post 2121; support portion 2122; weight-reducing groove 2123; vacant area 2124; first plug-in hole 2125; first clamping arm 2126; first clamping block 213; brush portion 220; carrier 221; bristle distribution area 2211; bristles 222; intermediate bristle face 2221; peripheral bristle face 2222;

[0030] First weight-reducing groove 2123a; second weight-reducing groove 2123b; third weight-reducing groove 2123c; fourth weight-reducing groove 2123d;

[0031] First support portion 2122a; second support portion 2122b; third support portion 2122c; fourth support portion 2122d; fifth support portion 2122e; sixth support portion 2122f; seventh support portion 2122g. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-5 As shown in the figure, the electric toothbrush 10 of the present application comprises a toothbrush handle 100 and a toothbrush head 200. The toothbrush handle 100 comprises a handle shell 110 and a driving motor 140, the driving motor 140 is arranged in the handle shell 110 and is connected with a driving rod 141. The driving rod 141 is connected with the toothbrush handle 100, and the driving motor 140 drives the toothbrush head 200 to brush the teeth through the driving rod 141.

[0034] As Figures 1-5 shown, the toothbrush head 200 comprises a rod part 210 and a brush part 220, the upper end of the rod part 210 is connected with the brush part 220, and the rod part 210 comprises a tubular shell 211 and a support 212, the support 212 is arranged in the tubular shell 211.

[0035] The support 212 comprises a connecting column 2121 and a supporting part 2122, the connecting column 2121 is arranged at the inner side of the tubular shell 211 and extends in the direction towards the brush part 220, and the driving rod 141 is connected with the connecting column 2121. The supporting part 2122 is protrusively arranged at the outer side wall of the connecting column 2121 and supports the tubular shell 211. The supporting part 2122 and the outer side wall of the connecting column 2121 enclose a weight-reducing groove 2123, so that the connecting column 2121 and the tubular shell 211 form an empty area 2124 in the weight-reducing groove 2123. The area where the weight-reducing groove 2123 is located and the area where the supporting part 2122 is located are alternately distributed along the outer periphery of the connecting column 2121.

[0036] It should be understood that the empty area 2124 can be understood as an area not filled with solid or liquid, which can be an air cavity, but is not limited thereto.

[0037] By the above manner, the application has at least the following two aspects of beneficial effects. First, the weight-reducing groove 2123 can reduce the weight of the support 212, thereby improving the brushing effect of the toothbrush head 200 on the teeth. Second, the area where the weight-reducing groove 2123 is located and the area where the support part 2122 is located are alternately distributed along the outer periphery of the connecting column 2121, so that the support 212 can support the tubular shell 211 more firmly through the support part 2122, thereby improving the transmission effect between the driving rod 141 and the toothbrush head 200. Therefore, the application can improve the firmness of the connection between the constituent structures of the toothbrush head 200 and the lightweight of the toothbrush head 200.

[0038] As shown in Figures 1-5 , the tubular shell 211 gradually shrinks from the lower end of the tubular shell 211 to the upper end of the tubular shell 211, and the overall support 212 gradually shrinks from one side of the lower end of the connecting column 2121 to one side of the upper end of the connecting column 2121. This can further improve the lightweight of the toothbrush head 200.

[0039] Optionally, as shown in Figures 1-5 , the area where the weight-reducing groove 2123 is located and the area where the support part 2122 is located are alternately distributed around and / or along the axis of the connecting column 2121.

[0040] Optionally, as shown in Figures 1-5 , the weight-reducing groove 2123 includes a first weight-reducing groove 2123a, which is formed as an annular groove extending around the axis of the connecting column 2121. The side wall of the tubular shell 211 protrudes a first clamping block 213 towards the first weight-reducing groove 2123a, and the first clamping block 213 is clamped with the first weight-reducing groove 2123a. Optionally, the first clamping block 213 can be an annular clamping block extending along the first weight-reducing groove 2123a. The area in the first weight-reducing groove 2123a between the first clamping block 213 and the connecting column 2121 is formed as one of the vacant areas 2124.

[0041] Optionally, as shown in Figures 1-5 , the weight-reducing groove 2123 includes a second weight-reducing groove 2123b, and the first weight-reducing groove 2123a and the second weight-reducing groove 2123b are sequentially and spaced apart along the axis of the connecting column 2121. The second weight-reducing groove 2123b is located below the first weight-reducing groove 2123a.

[0042] The support portion 2122 is distributed around the first weight-reducing groove 2123a and the second weight-reducing groove 2123b, so that the support portion 2122 includes a first support portion 2122a, a second support portion 2122b, and a third support portion 2122c. The first support portion 2122a, the first weight-reducing groove 2123a, the second support portion 2122b, the second weight-reducing groove 2123b, and the third support portion 2122c are sequentially distributed along the axial direction of the connecting column 2121. The inner space of the second weight-reducing groove 2123b is formed as one of the empty spaces 2124.

[0043] In the above manner, the tubular shell 211 can be supported at multiple positions on the inner wall of the tubular shell 211 by the first support portion 2122a, the second support portion 2122b, and the third support portion 2122c, thereby improving the firmness of the support of the tubular shell 211 by the support portion 2122.

[0044] Optionally, as shown in FIG. 2, the weight-reducing grooves 2123 include a third weight-reducing groove 2123c and a fourth weight-reducing groove 2123d. The third weight-reducing groove 2123c and the fourth weight-reducing groove 2123d are distributed on opposite sides of the connecting column 2121. The third weight-reducing groove 2123c and the second weight-reducing groove 2123b are located on the same side of the connecting column 2121. Figures 1-5 The third weight-reducing groove 2123c, the first weight-reducing groove 2123a, and the second weight-reducing groove 2123b are sequentially and spaced apart along the axial direction of the connecting column 2121. The fourth weight-reducing groove 2123d, the first weight-reducing groove 2123a, and the second weight-reducing groove 2123b are sequentially and spaced apart along the axial direction of the connecting column 2121.

[0045] The support portion 2122 is distributed around the first weight-reducing groove 2123a, the second weight-reducing groove 2123b, the third weight-reducing groove 2123c, and the fourth weight-reducing groove 2123d, so that the support portion 2122 includes a fourth support portion 2122d, a fifth support portion 2122e, a sixth support portion 2122f, and a seventh support portion 2122g. The fourth support portion 2122d, the third weight-reducing groove 2123c, the first support portion 2122a, and the first weight-reducing groove 2123a are sequentially distributed along the axial direction of the connecting column 2121. The fifth support portion 2122e, the fourth weight-reducing groove 2123d, the sixth support portion 2122f, the first weight-reducing groove 2123a, and the seventh support portion 2122g are sequentially distributed along the axial direction of the connecting column 2121. The inner spaces of the third weight-reducing groove 2123c and the fourth weight-reducing groove 2123d are each formed as one of the empty spaces 2124.

[0046]

[0047] ​In this way, the first to seventh support portions 2122a-2122g can be dispersed around the outer periphery of the support member 212, so that the first to seventh support portions 2122a-2122g can achieve multi-point support on the tubular shell 211.

[0048] Optionally, as shown in Figures 1-5 , the connecting column 2121 is provided with a first plug hole 2125, and the side wall of the first plug hole 2125 is provided with a first clamping arm 2126, which is located at the bottom wall of the weight-reducing groove 2123. The driving rod 141 is inserted into the first plug hole 2125 and detachably clamped with the clamping block end of the first clamping arm 2126. In this way, the toothbrush head 200 is mounted and dismounted on the driving rod 141.

[0049] Optionally, referring to Figure 7 , Figure 9 and Figure 10 , the brush portion 220 includes a carrier 221 and bristles 222, and the bristles 222 are arranged on the carrier 221. Defining the distribution area of the bristles 222 on the carrier 221 as a bristle distribution area 2211, the area of the bristle distribution area 2211 is 160-230mm 2 .

[0050] By way of example and not limitation, the area of the bristle distribution area 2211 is, for example, 160mm 2 , 200mm 2 , 215mm 2 , 230mm 2 , but not limited to. It should be noted that because the toothbrush head 200 is lightened by forming the empty space 2124 in the weight-reducing groove 2123, and the connection between the components of the rod portion 210 is firm, the brush portion 220 can be configured to have a larger weight and volume, so that the area of the bristle distribution area 2211 reaches 160mm 2 or more.

[0051] Optionally, referring to Figure 7 , Figure 9 and Figure 10 , the bristles 222 have a middle bristle surface 2221 and an outer peripheral bristle surface 2222. The outer peripheral bristle surface 2222 is distributed around the middle bristle surface 2221. The middle bristle surface 2221 is convexly arranged in a direction away from the carrier 221 relative to the outer peripheral bristle surface 2222, forming a convex surface.

[0052] By the above manner, at least the following two aspects have beneficial effects, the first aspect, the convex surface formed by the intermediate bristle surface 222 is beneficial to make the bristles 222 fully extend into the interdental space of the adjacent teeth when the bristles 222 brush the teeth, and further to clean the interdental space more fully. The second aspect, the convex surface formed by the intermediate bristle surface 222 fully brushes the intermediate position of the top of the teeth, and the outer peripheral bristle surface 222 fully brushes the outer periphery of the top of the teeth.

[0053] Optionally, referring to Figure 7 , Figure 9 and Figure 10 , the part of the bristles 222 forming the intermediate bristle surface 2221 includes 13 bristle bodies with circular cross sections. The part of the bristles 222 forming the outer peripheral bristle surface 2222 includes 12 bristle bodies with waist-round cross sections. It should be noted that each bristle body can be composed of a plurality of needle hairs.

[0054] The bristle distribution area 2211 can be an area surrounded by the outer side of the outer peripheral bristle surface 2222 on the carrier 221, as Figure 10 indicated.

[0055] Optionally, in combination with FIG. Figures 4-8 , referring to Figures 1-3 , the handle shell 110 is distributed around the axis of the toothbrush handle 100 with a button setting side 112 and a button avoiding side 113. The button setting side 112 is provided with a button avoiding opening 114, and the button avoiding side 113 is not provided with the button avoiding opening 114. The lower end of the stem portion 210 and the upper end of the toothbrush handle 100 form a drainage gap 11, which communicates the button setting side 112 and the button avoiding side 113. And the drainage gap 11 extends downward from the button setting side 112 to the button avoiding side 113. It should be noted that the button 190 can be exposed through the button avoiding opening 114, so that the hand can press the button 190. The button 190 can be arranged on the circuit board 130 and electrically connected with the circuit board.

[0056] By the above manner, the present application has at least the following two aspects of beneficial effects. The first aspect, since the drainage gap 11 extends downward from the button setting side 112 to the button avoiding side 113, the liquid in the drainage gap 11 can flow to the button avoiding side 113 under the action of gravity, and thus the dirt is not easy to deposit in the drainage gap 11. The second aspect, the drainage gap 11 can drain the liquid flowing downward along the stem portion 210 from the brush portion 220 to the button avoiding side 113, thereby avoiding or reducing the liquid flowing downward along the stem portion 210 from the brush portion 220 to the button setting side 112, and further reducing the risk of short circuit of the button 190. Therefore, the present application can reduce the risk of short circuit of the button 190 while avoiding or reducing the deposition of dirt at the joint of the toothbrush head 200 and the toothbrush handle 100.

[0057] Optionally, the upper end of the toothbrush handle 100 is formed with a first annular end face 101. The lower end of the rod portion 210 is formed with a second annular end face 201, and the first annular end face 101 and the second annular end face 201 are arranged obliquely relative to the axis of the toothbrush handle 100.

[0058] The driving rod 141 is connected with the support 212 through the first annular end face 101 and the second annular end face 201. The flow guiding gap 11 is formed between the first annular end face 101 and the second annular end face 201.

[0059] Optionally, the toothbrush handle 100 comprises a buffer 180 arranged at the upper end of the handle shell 110.

[0060] The buffer 180 comprises a cylindrical portion 181 and a ring portion 182, the ring portion 182 covers the periphery of the upper end opening 111 of the handle shell 110, and the cylindrical portion 181 is inserted into the handle shell 110 through the upper end opening 111 of the handle shell 110 and is connected with the ring portion 182. The first annular end face 101 is formed at the end face of the upper end of the ring portion 182. The driving rod 141 passes through the cylindrical portion 181. In this way, the buffer 180 can avoid the excessive shaking of the handle shell 110 caused by the direct collision of the driving rod 141 with the handle shell 110.

[0061] Optionally, the upper end opening 111 of the handle shell 110 is formed as an opening arranged obliquely relative to the axis of the toothbrush handle 100, and the ring portion 182 extends along the periphery of the upper end opening 111 of the handle shell 110 to be arranged obliquely relative to the axis of the toothbrush handle 100.

[0062] Optionally, the flow guiding gap 11 guides the liquid flowing downward along the rod portion 210 from the brush portion 220 to the button avoiding side 113 along a flow guiding direction. Figure 6 As shown, the angle θ between the flow guiding direction and the axis of the toothbrush handle 100 is 40-50 degrees.

[0063] It should be noted that, in an example, when the overall shape of the part of the toothbrush handle 100 used for holding by hand during brushing is a cylindrical shape, a prism shape, or a similar structure in which the size in one direction is obviously larger than the size in another direction, the axis of the toothbrush handle 100 can be the center line of the part of the toothbrush handle 100 used for holding by hand during brushing, such as the center line of a cylindrical structure or the center line of a prism structure, etc. In another example, when the toothbrush handle 100 is placed in a way that the brush portion 220 is hung on a toothbrush hanger and the toothbrush handle 100 is hanging downward, the axis of the toothbrush handle 100 can be determined as a vertical line.

[0064] By way of example, but not limitation, the angle between the flow guiding direction and the axis of the toothbrush handle 100 is 40 degrees, 45 degrees, or 50 degrees.

[0065] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the electric toothbrush 10 includes a neck light-emitting component 300, which is disposed at the upper end of the handle housing 110. The neck light-emitting component 300 is used to emit light to form an annular light-emitting area on the outer side of the upper end of the handle housing 110. Thus, the annular light-emitting area formed on the outer side of the handle housing 110 by the neck light-emitting component 300 can be used to indicate the working status of the electric toothbrush 10.

[0066] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the neck light-emitting component 300 is disposed inside the handle housing 110. The light emitted by the neck light-emitting component 300 passes through the space between the rod 210 and the handle housing 110 to form an annular light-emitting area between the rod 210 and the handle housing 110, but is not limited thereto.

[0067] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the neck light-emitting assembly 300 includes a ring circuit board 310, a plurality of first light-emitting elements 320, and a plurality of second light-emitting elements 330. A drive rod 141 passes through the ring circuit board 310. The first light-emitting elements 320 are used to emit a first color light, and the second light-emitting elements 330 are used to emit a second color light. The first color light and the second color light emit different colors.

[0068] The first light-emitting element 320 and the second light-emitting element 330 are disposed on the annular circuit board 310 and are distributed at intervals along the circumferential direction of the annular circuit board 310, and the first light-emitting element 320 and the second light-emitting element 330 are alternately arranged along the circumferential direction of the annular circuit board 310. The first light-emitting element 320 and the second light-emitting element 330 can emit light simultaneously or at different times to form an annular light-emitting area on the upper part of the handle housing 110.

[0069] In this application, by means of the above method, since the first light-emitting element 320 and the second light-emitting element 330 are alternately arranged circumferentially along the annular circuit board 310, and the first light-emitting element 320 and the second light-emitting element 330 can emit light simultaneously or at different times, the emission color of the annular emission area can be the emission color of the first light-emitting element 320, the emission color of the second light-emitting element 330, or a superposition of the emission colors of the first light-emitting element 320 and the second light-emitting element 330. Thus, this application can utilize the superposition of the emission colors of different light-emitting elements to provide a superimposed color as one of the switchable types of emission color for the annular emission area, thereby achieving the same level of all switchable types of emission color for the annular emission area as in the prior art using fewer light-emitting elements.

[0070] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the neck light-emitting component 300 has a first light-emitting state, a second light-emitting state, and a third light-emitting state.

[0071] The first luminous state includes the first luminous element 320 emitting light while the second luminous element 330 is off, so that the luminous color of the annular luminous area is the luminous color of the first color light. The second luminous state includes the first luminous element 320 being off while the second luminous element 330 emitting light, so that the luminous color of the annular luminous area is the luminous color of the second color light. The third luminous state includes the first luminous element 320 emitting light while the second luminous element 330 emitting light, so that the luminous color of the annular luminous area includes the superposition of the luminous colors of the first and second colors light.

[0072] It should be noted that the superimposed color can be the color formed by mixing the emitted colors of the first and second colors of light. For example, and not as a limitation, the first color of light can be blue, the second color of light can be green, and the superimposed color can be cyan, which is the color formed by mixing blue and green.

[0073] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the toothbrush handle 100 includes a strip circuit board 170 and a circuit board 130. The strip circuit board 170 is electrically connected to both the ring circuit board 310 and the circuit board 130. The circuit board 130 is electrically connected to the drive motor 140. This allows the ring circuit board 310 to be conveniently positioned at one end of the handle housing 110 corresponding to the drive rod 141, achieving a separate arrangement of the ring circuit board 310 and the circuit board 130.

[0074] Optionally, the electric toothbrush 10 may include a mechanism support 400, a circuit board 130, and a battery 150 disposed within the handle housing 110. The mechanism support 400 can support the circuit board 130, the drive motor 140, and the battery 150. The mechanism support 400 may be elongated, and the shape of the handle housing 110 is adapted to fit the mechanism support 400 so that the handle housing 110 can be fitted over the outside of the mechanism support 400. The circuit board 130 may be disposed between the mechanism support 400 and the handle housing 110.

[0075] The ring circuit board 310 and the strip circuit board 170 are integrally connected rigid or flexible circuit boards.

[0076] In one example, the ring circuit board 310 and the strip circuit board 170 are integrally connected rigid circuit boards, so that the ring circuit board 310 and the strip circuit board 170 can stably maintain their shape under their own gravity and are not easily deformed due to their own gravity.

[0077] In another example, the ring circuit board 310 and the strip circuit board 170 are integrally connected flexible circuit boards, so that the ring circuit board 310 can flexibly deform to adapt to the components installed in the handle housing 110, the end face of the upper end of the handle housing 110 and / or the surface of the buffer 180.

[0078] Optionally, combined Figures 1-3 , Figure 7 and Figure 8 See Figure 11 As shown, the annular circuit board 310 is disposed inside the handle housing 110, and the annular circuit board 310 is inclined relative to the axis of the toothbrush handle 100. One side of the annular circuit board 310, which has the first light-emitting element 320 and the second light-emitting element 330, faces the upper opening 111 of the handle housing 110. This arrangement allows the handle housing 110 to accommodate the annular circuit board 310, enabling a larger area to be configured for the annular circuit board 310.

[0079] Optionally, such as Figures 1-3 , Figure 7 and Figure 8 As shown, the upper opening 111 of the handle housing 110 is formed as an opening that is inclined relative to the axis of the toothbrush handle 100, and the annular circuit board 310 is inclined relative to the axis of the toothbrush handle 100 following the upper opening 111 of the handle housing 110.

[0080] The toothbrush handle 100 comprises a buffer 180, which comprises a cylinder portion 181 and a ring portion 182. The ring portion 182 covers the periphery of the upper end opening 111 of the handle shell 110, and the cylinder portion 181 is inserted into the handle shell 110 through the upper end opening 111 of the handle shell 110 and is connected with the ring portion 182. The ring portion 182 extends along the periphery of the upper end opening 111 of the handle shell 110 and is arranged obliquely relative to the axis of the toothbrush handle 100. The first light-emitting element 320 and the second light-emitting element 330 can illuminate the ring portion 182 to form a ring-shaped light-emitting area. Optionally, the acute angle between the upper end opening 111 of the handle shell 110 and the axis of the toothbrush handle 100 is 40-50 degrees. The linear plane angle between the plane where the upper end opening 111 of the handle shell 110 is located and the axis of the toothbrush handle 100 is 40-50 degrees.

[0081] Optionally, in combination with Figure 11 , Figures 1-3 and Figure 7 , as shown in Figure 8 , the shape of the ring-shaped circuit board 310 is an elliptical ring. Optionally, the distance between the adjacent first light-emitting element 320 and the second light-emitting element 330 is a first distance d1, which can be less than 3 mm. The first distance d1 is, for example, 2.2 mm, 2.6 mm or 3 mm, but is not limited thereto.

[0082] It should be noted that the first distance d1 is the distance between the center lines of the two sides of the first light-emitting element 320 and the second light-emitting element 330 facing each other.

[0083] Optionally, in combination with Figure 11 , as shown in Figures 1-3 , Figure 7 , the toothbrush handle 100 comprises a bottom cover assembly 120, which covers the lower end of the handle shell 110. The bottom cover assembly 120 comprises a first cover assembly 121 and a second cover assembly 122.

[0084] The first cover assembly 121 covers the lower end of the handle shell 110, and the first cover assembly 121 is provided with a first mounting groove 1211 and a charging socket 1212. The first mounting groove 1211 is located on the lower side of the first cover assembly 121, and the charging socket 1212 penetrates the bottom wall of the first mounting groove 1211.

[0085] The second cover assembly 122 is arranged in the first mounting groove 1211. The second cover assembly 122 comprises a cover portion 1221 and a knob portion 1222. The cover portion 1221 covers the charging socket 1212, and the upper side of the cover portion 1221 is detachably connected with the first cover assembly 121. The knob portion 1222 is arranged on the side edge of the cover portion 1221, and the knob portion 1222 is formed with a avoiding space 1223 near one side of the bottom wall of the first mounting groove 1211.

[0086] By the above manner, the fingertips or the nails of the human hand can at least partially extend into the avoiding space 1223, so that the human hand can rotate the rotating part 1222 to drive the second cover assembly 122 to move away from the bottom wall of the first installation slot 1211, thereby enabling the cover part 1221 to be separated from the charging jack 1212, so as to facilitate the insertion of the charging plug into the charging jack 1212. Therefore, the fingertips or the nails of the human hand can conveniently and quickly make the second cover assembly 122 out of the first installation slot 1211.

[0087] Further, in combination with Figure 8 , referring to Figure 11 , Figures 1-3 , the lower side of the cover part 1221, the lower side of the rotating part 1222 and the lower end surface of the side wall of the first installation slot 1211 are all located on the upper side of the lower end surface of the handle shell 110, and the lower side of the cover part 1221, the lower side of the rotating part 1222 and the lower end surface of the side wall of the first installation slot 1211 are all spaced apart from the lower end surface of the handle shell 110.

[0088] By the above manner, the liquid attached to the lower end surface of the handle shell 110 is not easy to flow back to the lower side of the cover part 1221, the lower side of the rotating part 1222 and the lower end surface of the side wall of the first installation slot 1211. In this way, the liquid attached to the lower end surface of the handle shell 110 is not easy to enter the charging jack 1212.

[0089] Further, in combination with Figure 7 , referring to Figure 8 , Figure 11 , the lower side of the cover part 1221 and the lower side of the rotating part 1222 are both located on the upper side of the lower end surface of the side wall of the first installation slot 1211, and the lower side of the cover part 1221 and the lower side of the rotating part 1222 are both spaced apart from the lower end surface of the side wall of the first installation slot 1211. In this way, the difficulty of the liquid attached to the lower end surface of the first installation slot 1211 entering the charging jack 1212 can be further improved, thereby the waterproof performance of the charging jack 1212 can be further improved.

[0090] Alternatively, the lower side of the cover part 1221 and the lower side of the rotating part 1222 are both spaced apart from the lower end surface of the side wall of the first installation slot 1211, and the distance between the lower side of the cover part 1221 and the lower side of the rotating part 1222 and the lower end surface of the side wall of the first installation slot 1211 is 0.12-0.18mm. In this way, while ensuring that the surface has high flatness, the liquid attached to the lower end surface of the first installation slot 1211 is not easy to enter the charging jack 1212.

[0091] In an example, the distance between the lower side of the cover portion 1221 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.12 mm, and the distance between the lower side of each of the poking portions 1222 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.12 mm.

[0092] In another example, the distance between the lower side of the cover portion 1221 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.12 mm, and the distance between the lower side of each of the poking portions 1222 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.15 mm.

[0093] In yet another example, the distance between the lower side of the cover portion 1221 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.18 mm, and the distance between the lower side of each of the poking portions 1222 and the lower end surface of the sidewall of the first mounting groove 1211 is 0.16 mm.

[0094] Optionally, the lower side of the cover portion 1221 and the lower side of each of the poking portions 1222 are coplanar, but are not limited thereto.

[0095] Optionally, in combination with Figures 1-3 , referring to Figure 7 , Figure 8 , the projection of the cover portion 1221 along the extension direction of the axis of the toothbrush handle 100 does not overlap with the projection of the poking portion 1222 along the extension direction of the axis of the toothbrush handle 100.

[0096] In the example, the side of the poking portion 1222 close to the bottom wall of the first mounting groove 1211 extends from the cover portion 1221 to the end away from the cover portion 1221, away from the side of the cover portion 1221 close to the bottom wall of the first mounting groove 1211, so that the side of the poking portion 1222 close to the bottom wall of the first mounting groove 1211 is formed with a relief space 1223.

[0097] In the above manner, the overall size of the poking portion 1222 and the cover portion 1221 along the axis of the toothbrush handle 100 is small, so that the poking portion 1222 and the cover portion 1221 can be accommodated in the first mounting groove 1211.

[0098] Optionally, in combination with Figure 11 , referring to Figures 1-3 , Figure 7 , the first cover assembly 121 is provided with a relief groove 1213, and the relief groove 1213 is located at the side of the mounting groove and communicates with the relief space 1223. In this way, the fingertips or fingernails of the hand can more easily extend into the relief space 1223 through the relief groove 1213.

[0099] Optionally, in combination with Figure 8 , referring to Figure 11 , Figures 1-3The side wall of the giving way slot 1213 on the side away from the avoiding space 1223 is formed with a guide surface 12131, which extends from the opening of the giving way slot 1213 to the side of the bottom wall of the first mounting slot 1211 on the side close to the avoiding space 1223. In this way, the guide surface 12131 can guide the fingertips or nails extending into the giving way slot 1213 to slide to the avoiding space 1223, so that the fingertips or nails can more smoothly extend into the avoiding space 1223. Optionally, the guide surface 12131 is a guide inclined surface or a curved surface.

[0100] Optionally, in combination with Figure 7 , refer to Figure 8 、 Figure 11 The first cover assembly 121 includes a base 1214. The base 1214 covers the lower end of the handle housing 110, and the first mounting slot 1211 and the giving way slot 1213 are arranged on the lower side of the base 1214. The upper side of the base 1214 is provided with a second mounting slot 1217. The second mounting slot 1217 is provided with a charging connector 160. The charging socket 1212 communicates with the second mounting slot 1217, and the second cover assembly 122 includes a plug-in sleeve 1225 protruding from the upper side of the cover portion 1221. The plug-in sleeve 1225 is detachably inserted into the charging socket 1212.

[0101] In the above manner, the plug-in sleeve 1225 inserted into the charging socket 1212 can block the charging socket 1212, so as to further improve the waterproof performance of the charging socket 1212.

[0102] Optionally, in combination with Figures 1-3 , refer to Figure 7 、 Figure 8 The first cover assembly 121 includes a guide column 1215 and a second clamping block 1216. The guide column 1215 protrudes from the upper side of the base 1214, and the guide column 1215 is provided with a guide hole 12151 penetrating through the lower side of the base 1214 and arranged in a spaced manner with the charging socket 1212. The end of the guide hole 12151 close to the lower side of the base 1214 is provided with the second clamping block 1216.

[0103] The second cover assembly 122 includes a second clamping arm 1224, which protrudes from the upper side of the cover portion 1221, and the clamping block end of the second clamping arm 1224 is movably arranged in the guide hole 12151 and located above the second clamping block 1216.

[0104] The clamping block end of the second clamping arm 1224 can move up and down in the guide hole 12151, so that the second cover assembly 122 can move close to or away from the bottom wall of the first installation slot 1211, and then the plug-in sleeve 1225 can be inserted into or withdrawn from the charging jack 1212. The second clamping block 1216 is used to clamp the clamping block end of the second clamping arm 1224 to limit the stroke of the downward movement of the second cover assembly 122.

[0105] In the above manner, when the second cover assembly 122 moves away from the bottom wall of the first installation slot 1211 and the clamping block end of the second clamping arm 1224 clamps the second clamping block 1216, the second cover assembly 122 can be hung below the first cover assembly 121. In this way, when it is necessary to cover the charging jack 1212, the second cover assembly 122 hung below the first cover assembly 121 can be directly pushed to the bottom wall of the first installation slot 1211 without the need to temporarily find the second cover assembly 122.

[0106] Optionally, in combination with Figure 11 , see Figures 1-3 , Figure 7 , the first cover assembly 121 includes a waterproof and breathable film 513, which is arranged in the guide hole 12151 and above the second clamping arm 1224. The second clamping arm 1224 can move between the waterproof and breathable film 513 and the second clamping block 1216. It should be noted that when the electric toothbrush 10 is working, the driving motor 140 and the circuit board 130 will generate heat, and in order to prevent the handle shell 110 from expanding, it is necessary to ventilate. Therefore, by using the waterproof and breathable hole, ventilation is achieved while maintaining waterproof performance by using the guide hole 12151.

[0107] Optionally, in combination with Figure 8 , see Figure 11 , Figures 1-3 , the first cover assembly 121 includes a mounting column 1218, which is protrudingly arranged on the upper side of the base 1214, and the second installation slot 1217 is arranged on the mounting column 1218.

[0108] Optionally, in combination with Figure 7 , see Figure 8 , Figure 11 , the base 1214 and the side wall of the lower end of the handle shell 110 are provided with an annular sealing member 123. The annular sealing member 123 includes but is not limited to a sealing coil.

[0109] Optionally, in combination with Figures 1-3 , see Figure 7 , Figure 8The first cover assembly 121 includes an annular flange portion 512, which is protruded on the upper side of the base 1214 and located at the periphery of the base 1214. The annular sealing member 123 is arranged between the annular flange portion 512 and the sidewall of the lower end of the handle housing 110.

[0110] Optionally, in combination with Figure 11 , refer to Figures 1-3 , Figure 7 The first cover assembly 121 includes a third clamping arm 1219, which is protruded on the upper end of the annular flange portion 512 and clamped with the movement core support 400. In this way, the third clamping arm 1219 is more flexible, so that when the first cover assembly 121 is inserted into the lower end of the handle housing 110, the third clamping arm 1219 can be elastically deformed to clamp or release the movement core support 400.

[0111] Optionally, in combination with Figure 8 , refer to Figure 11 , Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures 1-3 Figure 7 Figure 8 Figure 11 Figures The first cover assembly 121 includes a limiting block 511, which is detachably clamped between the mounting column 1218 and the guide column 1215 and between the guide column 1215 and the annular flange portion 512. The limiting block 511 clamped between the mounting column 1218 and the guide column 1215 extends to abut the annular flange. In this way, the limiting block 511 can support the mounting column 1218 and the guide column 1215, preventing the mounting column 1218 and the guide column 1215 from being skewed.

[0112] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A toothbrush head characterized by, The toothbrush head comprises a rod part and a brush part, the upper end of the rod part is connected with the brush part, the rod part comprises a tubular shell and a support part, the support part is arranged in the tubular shell; The support part comprises a connecting column and a support part, the connecting column is arranged in the inner side of the tubular shell and extends in the direction towards the brush part; the support part is arranged on the outer side wall of the connecting column and supports the tubular shell; the support part and the outer side wall of the connecting column are surrounded by a lightening groove, so that the connecting column and the tubular shell form a vacant area in the lightening groove; the area where the lightening groove is located and the area where the support part is located are alternately distributed along the outer periphery of the connecting column.

2. The toothbrush head of claim 1, wherein, The tubular shell is gradually contracted from the lower end of the tubular shell to the upper end of the tubular shell, and the support part is gradually contracted as a whole from the lower end of the support part to the upper end of the support part.

3. The toothbrush head of claim 1, wherein, The area where the lightening groove is located and the area where the support part is located are alternately distributed around and / or along the axial direction of the connecting column.

4. The toothbrush head of claim 1, wherein, The lightening groove comprises a first lightening groove, the first lightening groove is formed as an annular groove extending around the axial direction of the connecting column; The side wall of the tubular shell is provided with a first clamping block protruding towards the first lightening groove, and the first clamping block is clamped with the first lightening groove.

5. The toothbrush head of claim 4, wherein, The lightening groove comprises a second lightening groove, the first lightening groove and the second lightening groove are sequentially and spacedly arranged along the axial direction of the connecting column; the second lightening groove is located on the lower side of the first lightening groove; The support part is distributed around the outer periphery of the first lightening groove and the second lightening groove, so that the support part comprises a first support part, a second support part and a third support part; the first support part, the first lightening groove, the second support part, the second lightening groove and the third support part are sequentially distributed along the axial direction of the connecting column.

6. The toothbrush head of claim 5, wherein, The lightening groove comprises a third lightening groove and a fourth lightening groove; the third lightening groove and the fourth lightening groove are distributed on the two opposite sides of the connecting column; the third lightening groove and the second lightening groove are located on the same side of the connecting column; The third lightening groove, the first lightening groove and the second lightening groove are sequentially and spacedly arranged along the axial direction of the connecting column; and the fourth lightening groove, the first lightening groove and the second lightening groove are sequentially and spacedly arranged along the axial direction of the connecting column; The support part is distributed around the outer periphery of the first lightening groove, the second lightening groove, the third lightening groove and the fourth lightening groove, so that the support part comprises a fourth support part, a fifth support part, a sixth support part and a seventh support part; the fourth support part, the third lightening groove, the first support part, the first lightening groove are sequentially distributed along the axial direction of the connecting column; the fifth support part, the fourth lightening groove, the sixth support part, the first lightening groove and the seventh support part are sequentially distributed along the axial direction of the connecting column.

7. The toothbrush head of any one of claims 1-6, wherein, The first plug-in hole is arranged in the connecting column, the side wall of the first plug-in hole is provided with a first clamping arm, and the first clamping arm is located on the bottom wall of the lightening groove.

8. The toothbrush head of claim 1, wherein, The brush portion comprises a carrier and bristles, the bristles are arranged on the carrier; defining a distribution area of the bristles on the carrier as a bristle distribution area, then the area of the bristle distribution area is 160~230mm 2 .

9. The toothbrush head of claim 8, wherein, The bristles have a middle bristle surface and a peripheral bristle surface; the peripheral bristle surface is distributed around the middle bristle surface; wherein the middle bristle surface is convexly arranged in a direction away from the carrier relative to the peripheral bristle surface, forming a convex surface.

10. An electric toothbrush characterized by comprising: The electric toothbrush comprises the toothbrush head according to any one of claims 1-9.

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