CN116439864A - Miniaturized electric toothbrush and host machine thereof - Google Patents

Abstract

The invention discloses a miniaturized electric toothbrush and a host machine thereof, wherein the host machine comprises: a handle housing having a head portion and a tail portion; the driving motor, the battery, the first control circuit board, the second control circuit board and the display screen are positioned in the handle shell, and the bracket assembly is positioned in the handle shell and provided with a first mounting cavity and a second mounting cavity, the driving motor is arranged in the first mounting cavity, and the battery is arranged in the second mounting cavity; the bracket component is provided with a display screen mounting surface, a first control circuit board mounting surface and a second control circuit board mounting surface; the first control circuit board is arranged on the first control circuit board mounting surface, the second control circuit board is arranged on the second control circuit board mounting surface, and the display screen is arranged on the display screen mounting surface. The length of the bracket component in the axial direction is small, so that the length of the machine core is reduced, the miniaturization of the electric toothbrush is realized, and the electric toothbrush is convenient to carry and use.

Description

Miniaturized electric toothbrush and host machine thereof

Technical Field

The invention relates to the field of electric toothbrushes, in particular to a miniaturized electric toothbrush and a host machine thereof.

Background

The electric toothbrush is a toothbrush which can make the brush head generate high-frequency vibration through the rapid rotation or vibration of the motor, and instantly decompose toothpaste into fine foam, thereby deeply cleaning the teeth gaps. Existing powered toothbrushes typically include: the brush head is detachably arranged on the main machine, and a motor for driving the brush head to vibrate, a control circuit board (usually a PCBA board) for controlling the electric toothbrush circuit and a power supply are usually arranged in the main machine. The existing electric toothbrush has longer length and inconvenient carrying and use.

Disclosure of Invention

In order to solve the problem that the length of the existing electric toothbrush main machine is long, the invention aims to provide a miniaturized electric toothbrush and the main machine thereof.

In order to solve the technical problems, the invention adopts the following technical scheme:

a miniaturized power toothbrush host comprising:

a handle housing having a head portion and a tail portion;

the driving motor, the battery, the first control circuit board, the second control circuit board and the display screen are positioned in the handle shell; and

the bracket assembly is positioned in the handle shell and is provided with a first mounting cavity and a second mounting cavity which are sequentially arranged along the direction from the head to the tail of the handle shell, the driving motor is arranged in the first mounting cavity, and the battery is arranged in the second mounting cavity; the support assembly is provided with a display screen mounting surface, a first control circuit board mounting surface and a second control circuit board mounting surface, the display screen mounting surface and the first control circuit board mounting surface are sequentially arranged along the direction from the head to the tail of the handle shell, the second control circuit board mounting surface and the display screen mounting surface are oppositely arranged in the circumferential direction, the first control circuit board is mounted on the first control circuit board mounting surface and connected with the battery, the display screen is mounted on the display screen mounting surface and connected with the first control circuit board, and the second control circuit board is mounted on the second control circuit board mounting surface and connected with the first control circuit board.

The miniaturized electric toothbrush host computer is characterized in that the motor and the power supply are respectively arranged in the first mounting cavity and the second mounting cavity, the control circuit board is divided into the first control circuit board and the second control circuit board, the first mounting surface and the second mounting surface which are mutually staggered in the circumferential direction are respectively arranged on the first control circuit board and the second control circuit board, the length of the bracket component in the axial direction can be reduced, the length of the movement is reduced, miniaturization of the electric toothbrush is realized, and the electric toothbrush is convenient to carry and use.

In one embodiment, the first control circuit board is further provided with at least one first positioning hole, the first control circuit board mounting surface is provided with at least one positioning column matched with the at least one first positioning hole, and the at least one positioning column is respectively inserted into the at least one first positioning hole.

In one embodiment, the first control circuit board is provided with a first through hole and a second through hole which are communicated with the second mounting cavity, the first control circuit board is provided with a second positioning hole and a third positioning hole which respectively correspond to the first through hole and the second through hole, and the positive electrode conducting strip and the negative electrode conducting strip of the battery respectively penetrate through the first through hole and the second through hole, then are inserted into the second positioning hole and the third positioning hole, and are electrically connected with the first control circuit board.

In one embodiment, the first control circuit board is further provided with at least one pair of first limiting blocks arranged at intervals along the direction perpendicular to the axial direction of the bracket assembly, and the first control circuit board is limited by the first limiting blocks.

In one embodiment, at least one pair of second limiting blocks are arranged on the mounting surface of the display screen at intervals along the direction perpendicular to the axial direction of the bracket assembly, and the display screen is limited by the second limiting blocks.

In one embodiment, the second mounting cavity has an opening for taking and placing a battery, the opening being on the same side of the cradle assembly as the second control circuit board mounting surface, the second control circuit board mounting surface being on the head side of the opening.

In one embodiment, the bracket assembly comprises a bracket main body and a cover plate, wherein the first mounting surface is arranged on one side of the bracket main body, a first mounting groove and a second mounting groove which are sequentially distributed from the head to the tail are arranged on the other side of the bracket main body, a second control circuit board mounting surface is arranged on one side of the cover plate, a third mounting groove matched with the first mounting groove is arranged on the other side of the cover plate, the cover plate is buckled with the bracket main body, the first mounting groove and the third mounting groove are in butt joint to form a first mounting cavity, and the second mounting groove forms a second mounting cavity.

In one embodiment, one end of the second control circuit board mounting surface is provided with a limiting part, the other end of the second control circuit board mounting surface is provided with a first fixing hole, one end of the second control circuit board is matched with the limiting part, the other end of the second control circuit board is provided with a second fixing hole opposite to the first fixing hole, the support main body is provided with a screw hole opposite to the first fixing hole, and a screw penetrates through the second fixing hole and the first fixing hole and then is screwed into the screw hole so as to fix the second control circuit board, the cover plate and the support main body together.

In one embodiment, the handle housing comprises:

the upper shell comprises a cylindrical upper shell main body and an upper shell connector arranged at the lower end of the upper shell main body, wherein the upper shell connector is provided with a U-shaped extension part extending downwards;

the lower shell comprises a cylindrical lower shell main body and a lower shell connector arranged at the upper end of the lower shell main body, and a U-shaped concave part matched with the U-shaped extension part is arranged on the outer surface of the lower shell connector;

the upper shell and the lower shell are connected together through the upper shell connector and the lower shell connector, and the U-shaped extension part is inserted into the U-shaped concave part.

The invention relates to a miniaturized electric toothbrush, which comprises a toothbrush head and a miniaturized electric toothbrush main machine, wherein the toothbrush head is detachably arranged on a driving shaft of a driving motor of the miniaturized electric toothbrush main machine.

The advantageous effects of the additional technical features of the present invention will be described in the detailed description section of the present specification.

Drawings

FIG. 1 is a front view of a miniaturized electric toothbrush in one embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an exploded view of the main body of the miniaturized electric toothbrush shown in FIG. 1;

FIG. 6A is a front view of the upper housing of the miniaturized electric toothbrush shown in FIG. 1;

FIG. 6B is a right side view of FIG. 6A;

FIG. 6C is a top view of FIG. 6A;

FIG. 7A is a front view of the lower shell in one embodiment of the invention;

FIG. 7B is a rear view of FIG. 7A;

FIG. 7C is a top view of FIG. 7A;

FIG. 8A is an exploded view of the cartridge of the miniaturized electric toothbrush main body shown in FIG. 1;

FIG. 8B is a front view of the cartridge of FIG. 8A;

FIG. 8C is a rear view of the cartridge of FIG. 8A;

FIG. 9 is a schematic perspective view of a bracket assembly of the cartridge of FIG. 8A;

FIG. 10A is a schematic perspective view of a bracket body of the bracket assembly of FIG. 9;

FIG. 10B is a schematic perspective view of another view of the bracket body of the bracket assembly of FIG. 9;

FIG. 11 is a schematic perspective view of a cover plate of the bracket assembly of FIG. 9;

FIG. 12A is a schematic perspective view of a base of the bracket assembly of FIG. 9;

FIG. 12B is a schematic perspective view of another view of the base of the bracket assembly of FIG. 9;

fig. 13 is an enlarged partial schematic view at I shown in fig. 4.

Reference numerals illustrate:

1. an electric toothbrush;

100. a host;

110. a handle housing; 111. an upper case; 1111. an upper case main body; 1112. an upper shell joint; 1113. a U-shaped extension; 1114. locking the bulge; 1116. a clamping protrusion; 1117. a glue spraying groove; 1118. a first upper rail groove; 1119. a second upper rail groove; 112. a lower case; 1121. a lower case main body; 1122. a lower shell joint; 1123. a U-shaped concave portion; 1124. a locking groove; 1125. a buckle; 1126. a clamping groove; 1128. a first lower rail groove; 1129. a second lower rail groove; 1130. a sound outlet; 1131. a connecting pipe is inserted; 113. a head; 114. tail part; 115. a seal ring;

120. a movement;

130. a bracket assembly; 131. a holder main body; 1311. a first control circuit board mounting surface; 1312. a display screen mounting surface; 1313. positioning columns; 1314. a first limiting block; 1315. a first mounting groove; 1316. a second limiting block; 1317. perforating; 1318. a second mounting groove; 1319. a first through hole; 1320. a second through hole; 1321. a screw hole; 1323. a first upper rail; 1324. a first lower rail; 1325. a second upper rail; 1326. a second lower rail; 1327. a buckle;

132. a cover plate; 1321. a second control circuit board mounting surface; 1322. a third mounting groove; 1323. a limit part; 1324. a first fixing hole;

133. a base; 1331. a speaker mounting cavity; 1332. a resonant cavity; 1333. a first sleeve; 1334. a second sleeve; 1335. a coil mounting surface; 1336. a third sleeve; 1337. connecting ribs; 1338. a step; 1339. a plug-in groove;

134. a screw;

141. a first control circuit board; 1411. a first positioning hole; 1412. a second positioning hole; 1413. a third positioning hole; 1414. a first connection port;

142. a second control circuit board; 1422. a second connection port;

143. an electrical connection;

150. a driving motor; 151. a drive shaft;

160. a battery; 161. a positive electrode conductive sheet; 162. a negative electrode conductive sheet;

170. a display screen;

181. a speaker; 182. a waterproof sound-transmitting member; 183. a seal;

190. a receiving coil;

200. a brush head.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily apparent, a more particular description of the invention briefly described above will be rendered by reference to the appended drawings. It is apparent that the specific details described below are only some of the embodiments of the present invention and that the present invention may be practiced in many other embodiments that depart from those described herein. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

In this document, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms front, rear, upper, lower, etc. are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only used for the clarity and convenience of the expression technical scheme. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 is a front view of an electric toothbrush 1 according to one embodiment of the present invention, fig. 2 is a sectional view taken along the line A-A in fig. 1, fig. 3 is a right side view of fig. 1, fig. 4 is a sectional view taken along the line B-B in fig. 3, and in fig. 4, some sectional lines are omitted for the sake of clarity of the internal structure.

Referring to fig. 1 to 4, an electric toothbrush 1 according to one embodiment of the present invention includes: the host 100 and the brush head 200, the lower end of the host 100 may be placed on a charging stand (not shown) for charging.

Fig. 5 is an exploded structural schematic view of the main body 100 of the miniaturized electric toothbrush 1 shown in fig. 1. As shown in connection with fig. 1-5, the host 100 includes a handle housing 110 and a movement 120, the handle housing 110 being approximately cylindrical as an example to facilitate gripping. The handle housing 110 has a head 113 near the brush head 200 and a tail 114 far from the brush head 200, and a receiving cavity for receiving the movement 120 is formed inside the handle housing 110.

In one embodiment, the handle housing 110 is a segmented structure that includes an upper shell 111 and a lower shell 112. The upper case 111 includes an upper receiving chamber for receiving the upper portion of the movement 120, and the lower case 112 includes a lower receiving chamber for receiving the movement 120, the upper and lower receiving chambers constituting the receiving chamber. When the movement 120 is installed, the upper part of the movement 120 is inserted into the upper case 111, the lower part of the movement 120 is inserted into the lower case 112, and then the upper case 111 and the lower case 112 are covered. Because the movement 120 has a certain length in the axial direction, and the movement 120 needs to be closely matched and positioned with the inner wall of the accommodating cavity after being installed in the handle shell 110, the movement 120 can generate larger friction with the inner wall of the accommodating cavity when being installed in the accommodating cavity, the installation difficulty is increased, and the installation efficiency is reduced. The handle shell 110 of the invention adopts the sectional design of the upper shell 111 and the lower shell 112, so that the contact area between the handle shell and the inner wall of the accommodating cavity during the installation of the movement 120 can be reduced, the contact friction is reduced, the installation difficulty is reduced, and the installation efficiency is improved.

FIG. 6A is a front view of the upper housing of the miniaturized electric toothbrush shown in FIG. 1; FIG. 6B is a right side view of FIG. 6A; FIG. 6C is a top view of FIG. 6A; FIG. 7A is a front view of the lower shell in one embodiment of the invention; FIG. 7B is a rear view of FIG. 7A; fig. 7C is a top view of fig. 7A.

In one embodiment, referring to fig. 6A, 6B, 7A, 7B, and 7C, the upper case 111 includes an upper case body 1111 and an upper case joint 1112 provided at a lower end of the upper case body 1111, the lower case 112 includes a lower case body 1121 and a lower case joint 1122 provided at an upper end of the lower case body 1121, and the upper case joint 1112 is externally fitted over the lower case joint 1122 with a sealing ring 115 provided therebetween. Preferably, the upper housing joint 1112 has a downwardly extending U-shaped extension 1113, and the outer surface of the lower housing body 1121 is provided with a U-shaped recess 1123 that mates with the U-shaped extension 1113. In this way, the upper case joint 1112 and the lower case joint 1122 have a large contact area, and the connection reliability is high.

In order to make the junction of the upper case 111 and the lower case 112 more fit, to prevent a gap from occurring at the joint between the upper case 111 and the lower case 112 due to aged deformation of the upper case 111 when used for a long time, the handle case 110 further includes a locking structure including a locking protrusion 1114 provided on an edge of the U-shaped extension 1113 of the upper case 111 and a locking groove 1124 provided on a sidewall of the U-shaped recess 1123 of the lower case 112, and when the upper case 111 is assembled to the lower case 112, the locking protrusion 1114 is inserted into the locking groove 1124 to prevent a gap from occurring due to insufficient fit between the upper case 111 and the lower case 112 after deformation. In one embodiment, the locking protrusions 1114 are provided in a pair, and are respectively disposed at two sides of the U-shaped extension 1113, and extend in the front-rear direction; the locking grooves 1124 are a pair and are provided on both side walls of the recess. The locking tab 1114 may also act as a mounting guide. In another of these embodiments, the locking protrusion 1114 is disposed on the bottom edge of the U-shaped extension 1113 and the locking groove 1124 is disposed on the bottom wall of the U-shaped recess 1123.

In one embodiment, a pair of buckles 1125 engaged with the inner wall of the upper shell 111 are provided on the front side of the upper end surface of the lower shell 112 to increase the connection stability between the lower shell 112 and the upper shell 111.

In one embodiment, the lower end of the inner wall of the U-shaped extension 1113 is provided with a locking protrusion 1116, and the lower end of the U-shaped recess 1123 is provided with a locking groove 1126 matching the locking protrusion 1116. When the upper case 111 is mounted to the lower case 112, the locking projection 1116 is locked in the locking groove 1126. The handle housing 110 of the present invention forms a three-point type fixation by a pair of snaps 1125 provided at the front side and a snap boss 1116 provided at the rear side, so that the connection between the upper case 111 and the lower case 112 is more reliable.

In one embodiment, referring to fig. 7B, in order to make the connection between the upper case 111 and the lower case 112 stronger, the upper case joint 1112 and the lower case joint 1122 are fixed by glue. Preferably, a curved glue-beating groove 1117 for beating glue is arranged on the outer surface of the U-shaped concave part 1123, and the glue-beating grooves 1117 are formed by connecting two U-shaped glue-beating grooves 1117 end to end. The setting of the glue beating groove 1117 can realize the automation of glue beating, namely when glue beating, the lower shell 112 is placed on the rotary jig for rotation, and the glue beating needle drives glue into the curve glue beating groove 1117 along the axial direction reciprocating motion of the lower shell 112.

Fig. 8A is an exploded schematic view of the movement 120 of the main body 100 of the miniaturized electric toothbrush 1 shown in fig. 1; fig. 8B is a front view of cartridge 120 of fig. 8A; fig. 8C is a rear view of cartridge 120 of fig. 8A.

Referring to fig. 8A, 8B, and 8C, the movement 120 includes a bracket assembly 130, a first control circuit board 141, a second control circuit board 142, a driving motor 150, and a battery 160. Wherein, the bracket assembly 130 has a first mounting cavity, a second mounting cavity, a first mounting surface and a second control circuit board mounting surface 1321 which are staggered with each other in the circumferential direction, which are sequentially arranged along the head-to-tail direction of the handle housing, the driving motor 150 is mounted in the first mounting cavity, and the driving shaft 151 of the driving motor 150 extends out of the first mounting cavity and is detachably connected with the brush head 200; the battery 160 is mounted in the second mounting cavity, the first control circuit board 141 is mounted on the first mounting surface, and the second control circuit board 142 is mounted on the second control circuit board mounting surface 1321. The battery 160 is connected to the first control circuit board 141 or the second control circuit board 142, and the first control circuit board 141 or the second control circuit board 142 is connected to the driving motor 150.

By dividing the control circuit board of the electric toothbrush 1 into the first control circuit board 141 and the second control circuit board 142, and the first control circuit board 141 and the second control circuit board 142 are mounted on the first mounting surfaces 1311, 1312 and the second control circuit board mounting surface 1321 of the holder assembly 130, respectively, that is, on different surfaces of the holder assembly 130 that are offset from each other in the circumferential direction, the length of the holder assembly 130 in the axial direction can be reduced, thereby reducing the length of the movement 120, and achieving miniaturization of the electric toothbrush 1.

In one embodiment, the first mounting surfaces 1311, 1312 are disposed opposite the second control circuit board mounting surface 1321 such that the first mounting surfaces 1311, 1312 and the second control circuit board mounting surface 1321 are spaced apart in the circumferential direction, which avoids interference between the first control circuit board 141 and the second control circuit board 142.

In one embodiment, as shown in fig. 8A and 9, the bracket assembly 130 includes a bracket body 131 and a cover 132 in one embodiment.

FIG. 10A is a schematic perspective view of a bracket body of the bracket assembly of FIG. 9; FIG. 10B is a schematic perspective view of another view of the bracket body of the bracket assembly of FIG. 9; fig. 11 is a schematic perspective view of a cover plate of the bracket assembly of fig. 9.

Referring to fig. 10A, 10B, and 11, one side of the bracket main body 131 is provided with the first mounting surfaces 1311 and 1312, the other side is provided with the first mounting groove 1315 and the second mounting groove 1318 which are sequentially arranged from the head 113 to the tail 114 of the handle housing 110, one side of the cover plate 132 is provided with the second control circuit board mounting surface 1321, the other side is provided with the third mounting groove 1322 which is matched with the first mounting groove 1315, the cover plate 132 is buckled with the bracket main body 131, the first mounting groove 1315 and the third mounting groove 1322 are butted to form the first mounting cavity, and the second mounting groove 1318 forms the second mounting cavity.

In one embodiment, the movement 120 further includes a display 170, the first mounting surfaces 1311, 1312 include a display mounting surface 1312 and a first control circuit board mounting surface 1311 disposed in sequence from the head 113 to the tail 114, the first control circuit board 141 being mounted on the first control circuit board mounting surface 1311, the display 170 being mounted on the display mounting surface 1312 and being electrically connected to the first control circuit board 141 or the second control circuit board 142. By arranging the display screen 170, information such as electric quantity and the like can be visually displayed, and the use by a user is convenient; further, the display screen 170 and the first control circuit board 141 are mounted on the display screen mounting surface 1312 and the first control circuit board mounting surface 1311, respectively, so that the structure is compact, and the size is reduced.

In one embodiment, the first control circuit board mounting surface 1311 is provided with a first through hole 1319 and a second through hole 1320 (see fig. 10A) that are in communication with the second mounting groove 1318, and the first control circuit board 141 has a second positioning hole 1412 and a third positioning hole 1413 (see fig. 8B) that correspond to the first through hole 1319 and the second through hole 1320, respectively, and the positive electrode conductive tab 161 and the negative electrode conductive tab 162 of the battery 160 are inserted into the second positioning hole 1412 and the third positioning hole 1413 after passing through the first through hole 1319 and the second through hole 1320, respectively, and are electrically connected to the first control circuit board 141. In this structure, the positive electrode conductive sheet 161 and the negative electrode conductive sheet 162 have an electrical connection function on one hand, and have a function of connecting the first control circuit board 141 on the other hand, thereby realizing screw-free fixation, improving assembly efficiency, and saving production cost.

In one embodiment, the first control circuit board 141 is further provided with at least one first positioning hole 1411 (see fig. 8B), the first control circuit board mounting surface 1311 is provided with at least one positioning post 1313 (see fig. 10A) that mates with the at least one first positioning hole 1411, and the at least one positioning post 1313 is inserted into the at least one first positioning hole 1411, respectively. The positioning column 1313 and the first positioning hole 1411 cooperate to limit the first control circuit board 141.

In one embodiment, the first control circuit board mounting surface 1311 further includes at least one pair of first stoppers 1314 (see fig. 10A) disposed at intervals in a direction perpendicular to the axial direction of the bracket assembly 130, and the first control circuit board 141 is stopped by the first stoppers 1314 (see fig. 8B).

In this embodiment, the positioning column 1313 is disposed at the lower part of the first control circuit board 141, the first limiting block 1314 is disposed at the upper part of the first control circuit board 141, when the first control circuit board 141 is assembled, the first positioning hole 1411 at the lower end of the first control circuit board 141 is opposite to the positioning column 1313, so that the positioning column 1313 is inserted into the first positioning hole 1411, then the upper end of the first control circuit board 141 is clamped between the two first limiting blocks 1314, and then the first control circuit board 141 is welded with the positive electrode conductive sheet 161 and the negative electrode conductive sheet 162 of the battery 160, thereby realizing the installation and fixation of the first control circuit board 141.

In one embodiment, as shown in fig. 10B, the second mounting slot 1318 has an opening for accessing and releasing the battery 160, the opening being on the same side of the bracket assembly 130 as the second control circuit board mounting face 1321, the second control circuit board mounting face 1321 being on the head portion 113 side of the opening. The second mounting groove 1318 is provided with an opening, which is advantageous in facilitating assembly of the battery 160 while saving material costs.

In one embodiment, at least one pair of second limiting blocks 1316 (see fig. 10A) are disposed on the display screen mounting surface 1312 and are spaced along a direction perpendicular to the axial direction of the bracket assembly, and the display screen 170 is limited by the second limiting blocks 1316 (see fig. 8B).

In one embodiment, as shown in fig. 8C and 9, a limiting portion 1323 is provided at one end of the second control circuit board mounting surface 1321, a first fixing hole 1324 is provided at the other end, a limiting groove (not shown) that mates with the limiting portion 1323 is provided at one end of the second control circuit board 142, a second fixing hole (not shown) opposite to the first fixing hole 1324 is provided at the other end, a screw hole 1321 opposite to the first fixing hole 1324 is provided on the bracket main body 131, and a screw 1334 is screwed into the screw hole 1321 after passing through the second fixing hole and the first fixing hole 1324, so as to fix the second control circuit board 142, the cover plate 132 and the bracket main body 131 together. In this way, the second control circuit board 142, the cover 132 and the bracket main body 131 can be fixed together by one screw 1334, the assembly efficiency is high.

Referring to fig. 8B and 8C simultaneously, the first control circuit board 141 and the second control circuit board 142 are connected by an electrical connection 143. Specifically, the first control circuit board 141 is provided with a first connection port 1414, the second control circuit board 142 is provided with a second connection port 1422, one end of the electrical connector 143 is inserted into the first connection port 1414, and the other end is inserted into the second connection port 1422, so that the first control circuit board 141 and the second control circuit board 142 are conveniently and rapidly connected. The electrical connector 143 in this embodiment employs a flexible circuit board.

In one embodiment, the first control circuit board 141 is located at the lower portion of the bracket body 131, the second control circuit board 142 is located at the upper portion of the bracket body 131, the projections of the first control circuit board 141 and the second control circuit board 142 in the front-rear direction have overlapping areas, the first connection port 1414 is disposed at a position above the first control circuit board 141 and is located at the overlapping areas, and the second connection port 1422 is disposed at a position below the second control circuit board 142 and is located at the overlapping areas, so that the electrical connector 143 is convenient for connecting the first control circuit board 141 and the second control circuit board 142.

In one embodiment, the driving motor 150 and the battery 160 are electrically connected with the first control circuit board 141. Specifically, the lower end of the first mounting groove 1315 is provided with two through holes 1317 through which both ends of a solenoid (not shown) of the driving motor 150 pass, and the solenoid of the driving motor 150 is electrically connected to the first control circuit board 141 through the two through holes 1317.

In one embodiment, referring to fig. 6C, 7C and 8B simultaneously, the inner wall of the upper receiving chamber of the upper case 111 is provided with an upper rail groove group in the axial direction, which includes a first upper rail groove 1118 and a second upper rail groove 1119 (fig. 6C). The lower accommodation chamber inner wall of the lower case 112 is provided with a lower rail groove group including a first lower rail groove 1128 and a second lower rail groove 1129 in the axial direction (fig. 7C). The bracket body 131 is provided at both sides with a first guide rail set including a first upper guide rail 1323 engaged with the first upper guide rail groove 1118 and a first lower guide rail 1324 engaged with the first lower guide rail groove 1128, and a second guide rail set including a second upper guide rail 1325 engaged with the second upper guide rail groove 1119 and a second lower guide rail 1326 engaged with the second lower guide rail groove 1129 (fig. 8B). The assembly and positioning of the movement 120 with the upper and lower cases 111 and 112 are realized through the above structure, and the structure is simple and the assembly is convenient.

In one embodiment, referring to fig. 8B, a first elastic arm buckle is disposed at the lower end of the first upper rail 1323, and a second elastic arm buckle is disposed at the lower end of the second upper rail 1325, and when the upper case 111 is assembled to the movement 120, the first elastic arm buckle and the second elastic arm buckle are buckled into corresponding slots 1126 on the inner wall of the upper case 111, so that the upper case 111 is assembled with the movement 120 more firmly.

In one embodiment, a sound outlet 1130 is provided on the handle housing 110 and a speaker mounting cavity 1331 is provided in the bracket assembly 130; cartridge 120 further includes a speaker 181 and a waterproof sound-transmitting member 182, the speaker 181 being mounted in the speaker mounting chamber 1331, the speaker 181 being directed toward the sound outlet 1130; the waterproof sound-transmitting member 182 is provided between the sound outlet 1130 and the speaker 181. By arranging the loudspeaker 181, the waterproof sound-transmitting part 182 and other parts, the sound function of the electric toothbrush 1 is realized, including tooth brushing time reminding, tooth brushing mode switching and the like, which is beneficial to a user to better use the electric toothbrush 1 and improve the oral care effect; moreover, the waterproof sound-transmitting member 182 has the functions of dust prevention, water prevention, ventilation, air pressure balance, pressure relief, air exhaust and the like, and is beneficial to simplifying the structure of the host 100.

As an example, the speaker 181 is electrically connected to the second control circuit board 142. Alternatively, the speaker 181 is electrically connected to the first control circuit board 141.

As shown in fig. 4 and 13, the sound outlet 1130 is located at the rear 114 of the handle housing 110; the stand assembly 130 includes a stand main body 131 and a base 133, the base 133 is detachably connected to an end of the stand main body 131 near the tail 114 of the handle housing 110, and the base 133 is provided with the speaker mounting cavity 1331. Thus, the sound outlet 1130 is remote from the brush head 200, on the one hand preventing stains from brushing teeth from entering the sound outlet 1130, and on the other hand, the sound outlet 1130 is relatively close to the ear and sounds more clearly.

In one embodiment, as shown in fig. 12A, 12B and 13, the base 133 is provided with a resonant cavity 1332, the resonant cavity 1332 is located on a side of the speaker mounting cavity 1331 near the sound outlet 1130 and is in communication with the speaker mounting cavity 1331, and the waterproof sound-transmitting member 182 is disposed between the resonant cavity 1332 and the speaker mounting cavity 1331. The resonance chamber 1332 serves to enhance the sound signal emitted from the speaker 181, improving the sound transmission effect.

In one embodiment, the inner diameter of the speaker-mounting chamber 1331 is larger than the inner diameter of the resonance chamber 1332, a stepped surface 1339 is formed between the inner wall of the speaker-mounting chamber 1331 and the inner wall of the resonance chamber 1332, and the waterproof sound-transmitting member 182 is fixed to the stepped surface 1339. This structure can ensure the fixability of the waterproof sound-transmitting member 182, ensuring that it can still exert the waterproof, air-permeable and sound-transmitting effects during long-term use. In one embodiment, the waterproof sound-transmitting member 182 includes an annular elastic support and a waterproof, breathable sound-transmitting membrane disposed within an interior bore of the elastic support. The waterproof sound-transmitting piece adopts the ePTFE membrane, is a waterproof, breathable and sound-transmitting composite membrane, can ensure sound transmission capacity, rapidly decompresses, is highly breathable and conducive to heat dissipation, and is excellent in waterproof and high-efficiency protection. As shown in fig. 13, the elastic support serves to apply an upward elastic force to the speaker 181, effectively preventing the speaker 181 from shaking inside the base 133.

In one embodiment, the resonant cavity 1332 is a stepped hole including a large diameter hole and a small diameter hole connected in sequence along the sound emitting direction. By using the large and small apertures as the acoustic cavities, the volume of sound and the definition of sound can be improved.

In one embodiment, a first sleeve 1333 and a second sleeve 1334 are disposed at one end of the base 133 near the tail 114 of the handle housing 110, the cavity of the first sleeve 1333 forms the resonant cavity 1332, the second sleeve 1334 is located outside the first sleeve 1333 and forms a plugging slot 1339 therebetween, a plugging tube 1131 protruding outwards along the axial direction is disposed on the inner bottom surface of the tail 114 of the handle housing 110, the plugging tube 1131 is inserted into the plugging slot, and a sealing member 183 is disposed between the plugging tube 1131 and the first sleeve 1333 or the second sleeve 1334. This structural design effectively improves the waterproof performance of the main body 100 of the electric toothbrush 1, ensuring its stable operation in a humid environment.

In one embodiment, a coil mounting surface 1335 is disposed at an end of the base 133 near the tail 114 of the handle housing 110, the coil mounting surface 1335 surrounds the outer side of the second sleeve 1334, and the receiving coil 190 is sleeved on the second sleeve 1334 and is fixed on the coil mounting surface 1335. Through setting up receiving coil 190, realized the wireless function of charging of electric toothbrush 1 host computer 100 for it is more convenient to charge, has reduced the use of charging wire, has reduced battery 160 loss, has improved electric toothbrush 1's environmental protection performance. As an example, a third sleeve 1336 is disposed at an end of the base 133 near the tail 114 of the handle housing 110, the third sleeve 1336 is located outside the second sleeve 1334, and a plurality of connecting ribs 1337 are disposed between the third sleeve 1336 and the connecting ribs 1337, and the coil mounting surface 1335 is formed by an end surface of the third sleeve 1336 and an end surface of the connecting ribs 1337.

In one embodiment, as shown in fig. 12A, 12B and 13, a plurality of hooks 1327 protruding outwards are disposed at one end of the bracket main body 131 near the tail 114 of the handle housing 110, a plurality of steps 1338 matching with the plurality of hooks 1327 are disposed on a plurality of outer peripheral surfaces of the base 133, and the plurality of hooks 1327 are buckled at the plurality of steps 1338. The buckle structure realizes simple installation and disassembly between components, is convenient for the maintenance and the service of the electric toothbrush 1, and reduces the maintenance cost.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (10)

1. A miniaturized electric toothbrush host, comprising:

a handle housing having a head portion and a tail portion;

the driving motor, the battery, the first control circuit board, the second control circuit board and the display screen are positioned in the handle shell; and

the bracket assembly is positioned in the handle shell and is provided with a first mounting cavity and a second mounting cavity which are sequentially arranged along the direction from the head to the tail of the handle shell, the driving motor is arranged in the first mounting cavity, and the battery is arranged in the second mounting cavity; the support assembly is provided with a display screen mounting surface, a first control circuit board mounting surface and a second control circuit board mounting surface, the display screen mounting surface and the first control circuit board mounting surface are sequentially arranged along the direction from the head to the tail of the handle shell, the second control circuit board mounting surface and the display screen mounting surface are oppositely arranged in the circumferential direction, the first control circuit board is mounted on the first control circuit board mounting surface and connected with the battery, the display screen is mounted on the display screen mounting surface and connected with the first control circuit board, and the second control circuit board is mounted on the second control circuit board mounting surface and connected with the first control circuit board.

2. The miniaturized electric toothbrush main unit according to claim 1, wherein the first control circuit board is provided with a first through hole and a second through hole which are communicated with the second installation cavity, the first control circuit board is provided with a second positioning hole and a third positioning hole which are respectively corresponding to the first through hole and the second through hole, and the positive electrode conductive sheet and the negative electrode conductive sheet of the battery are inserted into the second positioning hole and the third positioning hole after passing through the first through hole and the second through hole respectively and are electrically connected with the first control circuit board.

3. The miniaturized electric toothbrush main machine according to claim 2, wherein the first control circuit board is further provided with at least one first positioning hole, the first control circuit board mounting surface is provided with at least one positioning column matched with the at least one first positioning hole, and the at least one positioning column is respectively inserted into the at least one first positioning hole.

4. The miniaturized electric toothbrush main unit according to claim 2, wherein the first control circuit board is further provided with at least one pair of first limiting blocks arranged at intervals along a direction perpendicular to the axial direction of the bracket assembly, and the first control circuit board is limited by the first limiting blocks.

5. The miniaturized electric toothbrush main machine according to claim 1, wherein the display screen mounting surface is provided with at least one pair of second limiting blocks which are arranged at intervals along the direction perpendicular to the axial direction of the bracket assembly, and the display screen is limited by the second limiting blocks.

6. The miniaturized power toothbrush main unit of claim 1, wherein the second mounting cavity has an opening for taking and placing a battery, the opening being located on the same side of the bracket assembly as the second control circuit board mounting surface, the second control circuit board mounting surface being located on a side of the opening that is on the head side of the handle housing.

7. The miniaturized electric toothbrush main machine according to claim 6, wherein the bracket assembly comprises a bracket main body and a cover plate, wherein the first mounting surface is arranged on one side of the bracket main body, a first mounting groove and a second mounting groove which are sequentially arranged from the head to the tail of the handle shell are arranged on the other side of the bracket main body, a second control circuit board mounting surface is arranged on one side of the cover plate, a third mounting groove matched with the first mounting groove is arranged on the other side of the cover plate, the cover plate is buckled with the bracket main body, the first mounting groove and the third mounting groove are in butt joint to form the first mounting cavity, and the second mounting groove forms the second mounting cavity.

8. The miniaturized electric toothbrush main machine according to claim 7, wherein one end of the second control circuit board mounting surface is provided with a limiting part, the other end is provided with a first fixing hole, one end of the second control circuit board is provided with a limiting groove matched with the limiting part, the other end is provided with a second fixing hole opposite to the first fixing hole, the bracket main body is provided with a screw hole opposite to the first fixing hole, and a screw penetrates through the second fixing hole and the first fixing hole and then is screwed into the screw hole to fix the second control circuit board, the cover plate and the bracket main body together.

9. The miniaturized power toothbrush main unit of claim 1, wherein the handle housing comprises:

the upper shell comprises a cylindrical upper shell main body and an upper shell connector arranged at the lower end of the upper shell main body, wherein the upper shell connector is provided with a U-shaped extension part extending downwards;

the lower shell comprises a cylindrical lower shell main body and a lower shell connector arranged at the upper end of the lower shell main body, and a U-shaped concave part matched with the U-shaped extension part is arranged on the outer surface of the lower shell connector;

the upper shell and the lower shell are connected together through the upper shell connector and the lower shell connector, and the U-shaped extension part is inserted into the U-shaped concave part.

10. A miniaturized electric toothbrush comprising a brush head, characterized by further comprising a miniaturized electric toothbrush main body according to any one of claims 1 to 9, said brush head being detachably mounted on a drive shaft of a drive motor of said miniaturized electric toothbrush main body.