CN219983109U

CN219983109U - Handle of electric toothbrush and electric toothbrush

Info

Publication number: CN219983109U
Application number: CN202222552082.3U
Authority: CN
Inventors: 刘坤光; 江艳; 张立
Original assignee: Guangzhou Stars Pulse Co Ltd
Current assignee: Guangzhou Stars Pulse Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-26
Publication date: 2023-11-10
Anticipated expiration: 2032-09-26

Abstract

The embodiment of the utility model discloses a handle of an electric toothbrush and the electric toothbrush, wherein the handle comprises a shell, a mounting frame, a display screen, a hard circuit board and a driving piece, an observation window is formed on the shell, and a first mounting groove corresponding to the observation window is formed on the mounting frame; at least part of the display screen is positioned in the first mounting groove, and the display screen is arranged corresponding to the observation window; the hard circuit board and the display screen are distributed at intervals in the length direction of the handle or in the circumferential direction of the handle and are electrically connected with the display screen; the driving piece is connected with the mounting frame, and the driving piece and the display screen are respectively located the opposite both sides of the thickness direction of the mounting frame, and the driving piece is electrically connected with the hard circuit board. The embodiment of the utility model is beneficial to reducing the occupied space of the display screen and the mounting frame in the shell, realizing the miniaturized design of the handle and facilitating the holding of a user. And the arrangement of the hard circuit board and the display screen in the shell is more flexible, so that the inner space of the shell can be more reasonably distributed, and the vibration transmission between the hard circuit board and the display screen can be avoided.

Description

Handle of electric toothbrush and electric toothbrush

Technical Field

The utility model relates to the technical field of oral cavity cleaning devices, in particular to a handle of an electric toothbrush and the electric toothbrush.

Background

With the continuous development of technology, various small electric appliances for life are gradually realized to realize technology, for example, electric toothbrushes are becoming popular with more and more people. Compared with the traditional toothbrush, the electric toothbrush has the advantages of better cleaning strength, less damage to the oral cavity, better comfort level and the like.

With popularization of the market, the electric toothbrush has more and more functions, for example, a display screen capable of displaying contents is further arranged on the electric toothbrush. However, the provision of the display screen makes the electric toothbrush excessively bulky, which is disadvantageous for the user to hold.

Disclosure of Invention

The embodiment of the utility model provides a handle of an electric toothbrush and the electric toothbrush, which are used for solving the problem that the electric toothbrush in the related art is overlarge in size and is not beneficial to a user to hold.

In a first aspect, embodiments of the present utility model provide a handle for an electric toothbrush, comprising:

the device comprises a shell, wherein an inner cavity is formed in the shell, and an observation window is formed in the shell;

the mounting frame is positioned in the inner cavity and is provided with a first mounting groove corresponding to the observation window;

the display screen is positioned in the inner cavity and at least partially positioned in the first mounting groove, and is arranged corresponding to the observation window so as to be displayed outside through the observation window;

the hard circuit board is positioned in the inner cavity, is distributed with the display screen in the length direction of the handle or in the circumferential direction of the handle at intervals, and is electrically connected with the display screen; the method comprises the steps of,

the driving piece is located the inner chamber and connect the mounting bracket, the driving piece with the display screen is located respectively the opposite both sides of thickness direction of mounting bracket, the driving piece with the rigid circuit board electricity is connected.

According to some embodiments of the utility model, the drive member includes a motor coupled to the mounting bracket and having a flat surface opposite a surface of the mounting bracket provided with the first mounting slot.

According to some embodiments of the utility model, the display screen has a first surface facing away from the mounting frame, the rigid circuit board has a second surface, the second surface and the first surface are located on the same side of the mounting frame in a thickness direction of the mounting frame, and at least part of the second surface is further away from a side of the mounting frame facing the viewing window than the first surface.

According to some embodiments of the utility model, the hard circuit board comprises: the base material and the display screen are positioned on the same side of the mounting frame along the thickness direction of the mounting frame and are connected with the mounting frame; and more than one electronic component, wherein the electronic components are connected with one side of the base material, which is far away from the mounting frame, and at least one surface of the electronic components, which is far away from the base material, is far away from one side of the mounting frame, which is towards the observation window, relative to the first surface.

According to some embodiments of the utility model, the mounting frame extends along a length direction of the handle, the mounting frame is further formed with a communication hole penetrating the mounting frame in a thickness direction of the mounting frame, and the handle further includes: the electric connection piece is arranged corresponding to the communication hole and electrically connected with the display screen and the hard circuit board, wherein the electric connection piece is connected to one surface of the hard circuit board, which faces the mounting frame.

According to some embodiments of the utility model, the mounting comprises: a base; the two first ribs are arranged on the base body at intervals, the two first ribs protrude out of the surface of the base body facing the observation window, and the two first ribs and the base body define the first mounting groove.

According to some embodiments of the utility model, the hard circuit board and the display screen are arranged at intervals along the length direction of the handle, each first rib extends along the length direction of the handle, and the handle further comprises an electric connector, wherein the electric connector is located between the two first ribs and electrically connects the display screen and the hard circuit board.

According to some embodiments of the utility model, the mounting further comprises: the two second ribs are protruded out of the surface of the base body facing the observation window, the two second ribs are arranged at intervals, each second rib is located between the two first ribs, each second rib extends along the direction perpendicular to the length direction of the handle, a first mounting groove is defined among the base body, the two second ribs and the two first ribs, and the opposite side walls of the two first ribs are abutted against the display screen and/or the opposite side walls of the two second ribs are abutted against the display screen; and in the two second convex ribs, an opening is arranged on one second convex rib close to the hard circuit board, and the electric connecting piece penetrates through the opening.

According to some embodiments of the utility model, the display screen and the hard circuit board are arranged at intervals in the length direction of the handle, and the display screen is closer to the output shaft of the handle relative to the hard circuit board; and/or, along the length direction of the handle, the ratio of the length of the display screen to the length of the hard circuit board is greater than or equal to 1/6 and less than or equal to 1/3.

According to some embodiments of the utility model, the first mounting groove extends in a thickness direction of the mounting frame, and a ratio of a depth of the first mounting groove to a thickness of the mounting frame at the first mounting groove is greater than or equal to 0.5 and less than or equal to 1 along the thickness direction of the mounting frame; and/or the projection of the display screen in a first plane is a first projection, the projection of the inner wall surface of the shell in the first plane is a second projection, the ratio of the maximum dimension of the first projection along a first direction to the maximum dimension of the second projection along the first direction at the first projection is greater than or equal to 0.7 and less than or equal to 0.95, the first plane is parallel to the first surface of the display screen facing the observation window and is parallel to the rotation axis of the output shaft of the handle, and the first direction is parallel to the first plane and is perpendicular to the rotation axis; and/or, the handle further comprises a buffer piece, and the buffer piece is arranged between the display screen and the inner wall surface of the shell; and/or the mounting frame is also provided with a second mounting groove, and at least part of the hard circuit board is positioned in the second mounting groove.

According to some embodiments of the utility model, further comprising: the display screen and the hard circuit board are arranged at intervals in the length direction of the handle, the key is arranged at one end, close to the display screen, of the hard circuit board and is electrically connected with the hard circuit board, and the shell comprises an elastic pressing part corresponding to the key.

According to some embodiments of the utility model, further comprising: the batteries are positioned in the inner cavity and are positioned on two opposite sides of the thickness direction of the mounting frame with the display screen, the batteries are electrically connected with the driving piece and the display screen, and the driving piece and the batteries are distributed along the length direction of the handle.

According to some embodiments of the utility model, the outer wall surface of the mounting frame is provided with one of a guide groove and a guide post, the inner wall surface of the housing is provided with the other of the guide groove and the guide post, the guide groove is positioned in the guide post, the guide groove extends along the length direction of the handle, and when the mounting frame and the display screen are mounted into the inner cavity from one end of the handle, the guide post slides along the extending direction of the guide groove, and the surface of the display screen facing the observation window is always spaced from the inner wall surface of the housing.

In a second aspect, an embodiment of the present utility model provides an electric toothbrush, including a brush head and the handle described above, where the brush head is connected to an output shaft of the handle.

According to the handle of the electric toothbrush and the electric toothbrush, at least part of the display screen is arranged in the first mounting groove of the mounting frame, compared with the situation that the display screen is arranged on the surface of the mounting frame, the connection stability between the display screen and the mounting frame can be improved, occupation space of the display screen and the mounting frame in the shell is reduced, the miniaturized design of the handle is achieved, and the handle is convenient for a user to hold. And the hard circuit board and the display screen are distributed at intervals, compared with the hard circuit board and the display screen which are connected into a whole, the arrangement of the hard circuit board and the display screen in the shell is more flexible, so that the internal space of the shell can be distributed more reasonably, and the miniature design of the handle is facilitated. And the rigid circuit board and the display screen are distributed at intervals, so that vibration transmission between the rigid circuit board and the display screen can be avoided, vibration of the rigid circuit board is prevented from being transmitted to the display screen, and further shaking of the display screen can be avoided, and display content affecting watching of the display screen by a user is avoided.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electric toothbrush according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a part of the handle of an electric toothbrush according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a partial structure of a handle in an electric toothbrush according to an embodiment of the present utility model;

FIG. 4 is an exploded view of a partial structure of a handle in an electric toothbrush according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a partial structure of a handle in an electric toothbrush according to an embodiment of the present utility model;

fig. 6 is a partial schematic view of a handle in an electric toothbrush according to an embodiment of the present utility model.

Reference numerals illustrate: 1. an electric toothbrush; 10. a handle; 11. a housing; 112. an observation window; 113. a guide groove; 12. a mounting frame; 121. a first mounting groove; 122. a communication hole; 1231. a base; 1232. the first convex rib; 1233. the second convex rib; 1234. an opening; 124. a second mounting groove; 1251. a first hook; 1252. a second hook; 1261. a first side plate; 1262. a first accommodating groove; 1263. a first opening; 1271. a second side plate; 1272. a second accommodating groove; 1273. a second opening; 128. a guide post; 13. a display screen; 131. a first surface; 14. a hard circuit board; 141. a key; 142. a second surface; 143. a substrate; 144. an electronic component; 15. a driving member; 151. a motor; 1511. a flat surface; 1512. a cylindrical surface; 16. an electrical connection; 161. a flexible circuit board; 162. an electrical bracket; 17. an output shaft; 18. a buffer member; 19. a battery; 20. a brush head; x, the length direction of the handle; y, the thickness direction of the mounting frame; z, first direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model as detailed in the accompanying claims.

Referring to fig. 1, an electric toothbrush 1 is provided in an embodiment of the present utility model, the electric toothbrush 1 includes a handle 10 and a brush head 20, wherein the handle 10 is connected to the brush head 20 and is used for driving the brush head 20 to move (e.g. vibrate, etc.) so as to clean the internal environment of the oral cavity such as teeth.

Referring to fig. 1 and 2, the handle 10 includes a housing 11, a mounting frame 12, a display screen 13, a hard circuit board 14 and a driving member 15, an inner cavity (not shown in the drawing) is formed inside the housing 11, and the mounting frame 12, the display screen 13, the hard circuit board 14 and the driving member 15 are all located in the inner cavity, so as to be protected by the housing 11, and avoid phenomena such as collision and scratching.

Referring to fig. 1 to 3, a viewing window 112 is formed on the housing 11, the mounting bracket 12 is formed with a first mounting groove 121 corresponding to the viewing window 112, at least a portion of the display 13 is positioned in the first mounting groove 121, and the display 13 is disposed corresponding to the viewing window 112 so as to be able to be externally displayed through the viewing window 112, so that a user can view the display content of the display 13 through the viewing window 112. The display content of the display screen 13 may include the current power of the electric toothbrush 1, the current set operation mode, the animation image, and the like, which is not limited in the embodiment of the present utility model.

The display screen 13 is at least partially arranged in the first mounting groove 121 of the mounting frame 12, so that the connection stability between the display screen 13 and the mounting frame 12 can be improved compared with the case that the display screen 13 is arranged on the surface of the mounting frame 12, and the occupation space of the display screen 13 and the mounting frame 12 in the shell 11 can be reduced, the miniaturized design of the handle 10 can be realized, and the holding of a user can be facilitated.

It should be noted that, the display 13 may be integrally disposed in the first mounting groove 121, for example, the first surface 131 of the display 13 facing the observation window 112 is in the same plane with the notch contour line of the first mounting groove 121 or the first surface 131 of the display 13 is located in the first mounting groove 121; the display 13 may also be partially disposed in the first mounting groove 121, which is not limited in the embodiment of the present utility model.

Optionally, referring to fig. 2, the first mounting groove 121 extends in a thickness direction y of the mounting frame 12, and a ratio of a depth of the first mounting groove 121 to a thickness of the mounting frame 12 at the first mounting groove 121 is greater than or equal to 0.5 and less than or equal to 1 along the thickness direction y of the mounting frame 12, so that the mounting frame 12 has sufficient structural rigidity while achieving stable mounting of the display screen 13 on the mounting frame 12. Specifically, in the thickness direction y of the mounting frame 12, the ratio of the depth of the first mounting groove 121 to the thickness of the mounting frame 12 at the first mounting groove 121 may be 0.5, 0.65, 0.78, 0.85, 1, etc., which is not limited in the embodiment of the present utility model. Wherein the thickness direction y of the mounting frame 12 may be perpendicular to the length direction x of the handle 10.

The hard circuit board 14 and the display 13 are distributed at intervals in the length direction x of the handle 10 or in the circumferential direction of the handle 10 and are electrically connected with the display 13. The hard circuit board 14 and the display screen 13 are distributed at intervals, compared with the hard circuit board 14 and the display screen 13 which are connected into a whole, the arrangement of the hard circuit board 14 and the display screen 13 in the shell 11 is more flexible, so that the inner space of the shell 11 can be distributed more reasonably, and the miniature design of the handle 10 is facilitated. Moreover, the hard circuit board 14 and the display screen 13 are distributed at intervals, so that vibration transmission between the hard circuit board 14 and the display screen 13 can be avoided, for example, if the hard circuit board 14 is provided with the key 141 and the hard circuit board 14 is not stably installed, the hard circuit board 14 may vibrate when the key 141 is pressed, and vibration of the hard circuit board 14 is not easily transmitted to the display screen 13, so that shaking of the display screen 13 can be avoided, and influence on watching of display content of the display screen 13 by a user is avoided.

The hard circuit board 14 is electrically connected to the display 13, and may be used to provide control signals for the display 13. Referring to fig. 2 and 3, the hard circuit board 14 and the display 13 may be electrically connected by an electrical connector 16, and the electrical connector 16 may include a wire, a flexible circuit board 161, etc., which is not limited in the embodiment of the present utility model.

Preferably, the rigid circuit board 14 is connected with the display screen 13 through the flexible circuit board 161, so that the connection is convenient, and when the rigid circuit board 14 or the display screen 13 shakes, the flexible circuit board 161 can release torque force through torsional deformation, so that vibration transmission between the rigid circuit board 14 and the display screen 13 is avoided.

In connection with fig. 2, the driving member 15 is connected to the mounting frame 12 so as to enable mounting fixation in the inner cavity of the housing 11 by means of the mounting frame 12. The driving piece 15 is electrically connected with the hard circuit board 14, and is used for receiving a control signal of the hard circuit board 14, so as to drive the brush head 20 to move or stop. Specifically, the handle 10 further includes an output shaft 17, one end of the output shaft 17 is located in the inner cavity of the housing 11 and connected to the driving member 15, and the other end of the output shaft 17 is located outside the housing 11 and connected to the brush head 20, so that the output shaft 17 can drive the brush head 20 to move under the driving of the driving member 15. Wherein the driving member 15 and the display 13 are respectively positioned at two opposite sides of the mounting frame 12 in the thickness direction y.

Alternatively, the driving member 15 includes a motor 151, the motor 151 is connected to the mounting bracket 12 and a flat surface 1511 of the motor 151 is opposed to a surface of the mounting bracket 12 provided with the first mounting groove 121. Since the radial dimension of the motor 151 at the flat surface 1511 is generally smaller than the radial dimension of the motor 151 at the cylindrical surface 1512, the first mounting groove 121 is provided at the position corresponding to the flat surface 1511, so that the space left at the flat surface 1511 in the inner cavity of the housing 11 can be fully utilized.

Further alternatively, referring to fig. 4, the flat surface 1511 of the motor 151 is connected to the mounting frame 12, and the surface on the mounting frame 12 for connection with the flat surface 1511 may be a plane, so that when the motor 151 is connected to the mounting frame 12, the flat surface 1511 may be attached to the plane on the mounting frame 12, so as to promote the connection stability of the two. The thickness of the mounting frame 12 at the mounting groove may be a distance between a plane on the mounting frame 12 for connecting with the flat surface 1511 and a groove bottom wall of the first mounting groove 121.

It should be noted that, since the driving member 15 and the display 13 are respectively located at two opposite sides of the thickness direction y of the mounting frame 12, and the size of the driving member 15 is relatively large, the rigid circuit board 14 and the display 13 are preferably distributed at intervals in the length direction x of the handle 10 or in the circumferential direction of the handle 10, and the rigid circuit board 14 and the display 13 are preferably distributed at intervals in the length direction x of the handle 10, so as to reduce the radial size of the handle 10, and facilitate the holding of the user. Hereinafter, the rigid circuit board 14 and the display 13 are exemplarily illustrated as being spaced apart in the longitudinal direction x of the handle 10.

Referring to fig. 5, the display 13 has a first surface 131 facing the viewing window 112, the rigid circuit board 14 has a second surface 142, the second surface 142 and the first surface 131 are located on the same side of the mounting frame 12 in the thickness direction y of the mounting frame 12, and at least part of the second surface 142 is farther from the side of the mounting frame 12 facing the viewing window 112 than the first surface 131. In this way, when the mounting frame 12, the display 13 and the hard circuit board 14 are mounted into the inner cavity of the housing 11 from one end of the handle 10, the first surface 131 of the display 13 is not easy to interfere with the inner wall surface of the housing 11, so that the scratch problem of the first surface 131 can be avoided; in addition, the display content of the display screen 13 is displayed by the first surface 131 and the observation window 112, so that the first surface 131 is prevented from being scratched, the definition of the display content on the display screen 13 can be ensured, and the display is convenient for the user to watch.

Wherein the rigid circuit board 14 includes a substrate 143 and one or more electronic components 144 mounted on the substrate 143, in an exemplary embodiment, at least a portion of a surface of the substrate 143 may be further away from a side of the mounting frame 12 facing the viewing window 112 relative to the first surface 131; in another exemplary arrangement, a surface of the at least one electronic component 144 may be further from the side of the mount 12 facing the viewing window 112 relative to the first surface 131.

In the embodiment of the utility model, the substrate 143 and the display 13 are located on the same side of the mounting frame 12 along the thickness direction y of the mounting frame 12, the substrate 143 is connected to the mounting frame 12, the electronic component 144 is connected to a side of the substrate 143 away from the mounting frame 12, and at least one surface of the electronic component 144 facing away from the substrate 143 is farther away from a side of the mounting frame 12 facing the viewing window 112 than the first surface 131.

Optionally, the handle 10 further includes a buffer member 18, where the buffer member 18 is disposed between the display 13 and the inner wall surface of the housing 11 to avoid scratching the first surface 131 of the display 13. Wherein, the buffer member 18 may be mounted on the first surface 131 of the display screen 13, so that the first surface 131 is not easy to contact with other devices under the action of the buffer member 18, and is not easy to be scratched in the process that the display screen 13 is mounted into the inner cavity of the housing 11 from one end of the handle 10.

Optionally, referring to fig. 4, the mounting frame 12 extends along the length direction x of the handle 10, the mounting frame 12 is further formed with a communication hole 122 penetrating through the mounting frame 12 along the thickness direction y of the mounting frame 12, and the electric connector 16 may be disposed corresponding to the communication hole 122 and electrically connected to one side of the hard circuit board 14 facing the mounting frame 12, so that the driving members 15 and the display screen 13 respectively located on two opposite sides of the mounting frame 12 along the thickness direction y of the mounting frame 12 can be electrically connected to the hard circuit board 14 through the electric connector 16 at the communication hole 122, so as to reduce wiring. Specifically, the electrical connector 16 may include a flexible circuit board 161 and an electrical bracket 162, where the flexible circuit board 161 and the electrical bracket 162 are disposed corresponding to the communication hole 122, the flexible circuit board 161 is electrically connected to the display 13 and the hard circuit board 14, and the electrical bracket 162 is electrically connected to the driving member 15 and the hard circuit board 14.

Alternatively, the display 13 is close to the output shaft 17 with respect to the hard circuit board 14 so that the user views the display content of the display 13. And the driving member 15 is connected with the output shaft 17 to drive the brush head 20 to move, and then the driving member 15 and the display screen 13 are both located at one side close to the output shaft 17, so as to facilitate that the surface of the mounting frame 12 provided with the first mounting groove 121 for mounting the display screen 13 can be opposite to the flat surface 1511 of the driving member 15.

Optionally, the ratio of the length of the display 13 to the length of the rigid circuit board 14 is greater than or equal to 1/6 and less than or equal to 1/3 along the length direction x of the handle 10. Along the length direction x of the handle 10, the sum of the length of the display screen 13 and the length of the hard circuit board 14 approximately determines the length of the handle 10, and through reasonable distribution of the length of the display screen 13 and the length of the hard circuit board 14, the size of the display screen 13 along the length direction x of the handle 10 can be made large enough, so that the user viewing experience is facilitated. Specifically, the ratio of the length of the display 13 to the length of the hard circuit board 14 along the length direction x of the handle 10 may be 1/6, 1/5, 1/4, 1/3, etc., which is not limited in the embodiment of the present utility model.

Optionally, the projection of the display screen 13 in the first plane is a first projection, the projection of the inner wall surface of the housing 11 in the first plane is a second projection, the ratio of the largest dimension of the first projection along the first direction z to the largest dimension of the second projection along the first direction z at the first projection is greater than or equal to 0.7 and less than or equal to 0.95, the first plane is parallel to the first surface 131 of the display screen 13 and parallel to the rotation axis of the output shaft 17, and the first direction z is parallel to the first plane and perpendicular to the rotation axis, so that the dimension of the display screen 13 in the direction perpendicular to the rotation axis is sufficiently large to make use of the larger space of the housing 11, and realize large-screen display. Wherein the axis of rotation of the output shaft 17 may be parallel to the length direction x of the handle 10. Specifically, the ratio of the maximum dimension of the first projection along the first direction z to the maximum dimension of the second projection along the first direction z at the first projection may be 0.7, 0.76, 0.83, 0.89, 0.95, and so on, which is not limited by the embodiment of the present utility model.

Optionally, referring to fig. 5, the mounting frame 12 includes a base 1231 and two first ribs 1232, the two first ribs 1232 are disposed on the base 1231 at intervals, the two first ribs 1232 protrude from a surface of the base 1231 facing the observation window 112, and the two first ribs 1232 and the base 1231 define the first mounting groove 121. The first mounting groove 121 is defined by the base 1231 and the first ribs 1232, so that the thickness of the base 1231 is substantially uniform and not too thick, which is advantageous for the lightweight design of the handle 10, compared with the first mounting groove 121 formed by digging the mounting frame 12.

Optionally, each first rib 1232 extends along the length direction x of the handle 10, and the electrical connector 16 also extends along the length direction x of the handle 10 and is located between the two first ribs 1232, so that one end of the electrical connector 16 is electrically connected to the display 13, and the other end is electrically connected to the hard circuit board 14.

Optionally, the mounting frame 12 includes two second ribs 1233 in addition to the two first ribs 1232, the two second ribs 1233 protrude from the surface of the base body 1231 facing the observation window 112, the two second ribs 1233 are disposed at intervals, each second rib 1233 is located between the two first ribs 1232, each second rib 1233 extends along the direction perpendicular to the length direction x of the handle 10, a first mounting groove 121 is defined between the base body 1231, the two second ribs 1233 and the two first ribs 1232, and opposite side walls of the two first ribs 1232 are all abutted against the display screen 13 and/or opposite side walls of the two second ribs 1233 are all abutted against the display screen 13, so as to improve the mounting stability of the display screen 13 in the first mounting groove 121. Among the two second ribs 1233, an opening 1234 is disposed on a second rib 1233 close to the hard circuit board 14, and the electrical connector 16 is disposed through the opening 1234, so as to electrically connect one end of the electrical connector to the display 13 and the other end of the electrical connector to the hard circuit board 14.

Optionally, with continued reference to fig. 5, the mounting frame 12 is further formed with a second mounting groove 124, and at least a portion of the rigid circuit board 14 is located in the second mounting groove 124, so as to improve the connection reliability between the rigid circuit board 14 and the mounting frame 12. The second mounting groove 124 may be similar to the first mounting groove 121, for example, the mounting frame 12 further includes two third ribs (not shown in the drawings), the two third ribs are disposed on the base 1231 at intervals, the two third ribs protrude from the surface of the base 1231 facing the observation window 112, and the two third ribs and the base 1231 define the second mounting groove 124. The hard circuit board 14 and the second mounting groove 124 on the mounting frame 12 may be in an interference fit connection.

It should be noted that, the hard circuit board 14 and the mounting frame 12 may also be connected by a clamping manner; for example, referring to fig. 5 and fig. 6, the mounting frame 12 includes two first hooks 1251, the two first hooks 1251 are disposed on the base 1231 at intervals, and the two first hooks 1251 protrude from the surface of the base 1231 facing the observation window 112, so that after the hard circuit board 14 is attached to the mounting frame 12, the two first hooks 1251 can buckle the surface of the hard circuit board 14 facing the observation window 112. The two first hooks 1251 may be located at two opposite sides of the base 1231 along a direction perpendicular to the length of the handle 10, and along the length direction x of the handle 10, the two first hooks 1251 may be disposed corresponding to the middle of the hard circuit board 14.

Optionally, when the key 141 is mounted on the hard circuit board 14, the mounting frame 12 further includes two second hooks 1252, the two second hooks 1252 are disposed on the base 1231 at intervals, the two second hooks 1252 protrude from the surface of the base 1231 facing the observation window 112, and the two second hooks 1252 can be disposed near the key 141, so as to prevent the hard circuit board 14 from moving relative to the mounting frame 12 when the key 141 is pressed. The key 141 may be mounted at one end of the hard circuit board 14 near the display 13 so as to be pressed by a user. The case 11 may include an elastic pressing portion corresponding to the key 141 to make the pressing operation of the key 141 more labor-saving.

Optionally, please combine fig. 4, the mounting frame 12 further includes two first side plates 1261, the two first side plates 1261 all extend along the length direction x of the handle 10, the two first side plates 1261 are arranged at intervals along the direction perpendicular to the length of the handle 10, one ends of the two first side plates 1261 all connect with the base 1231, the other ends all extend towards the side far away from the observation window 112, a first accommodating groove 1262 is defined between the two first side plates 1261 and the base 1231, and the driving element 15 is located in the first accommodating groove 1262 so as to promote the connection reliability between the driving element 15 and the mounting frame 12. It should be noted that, when the driving member 15 includes the motor 151, the cylindrical surface 1512 of the motor 151 may be connected to the inner wall surface of the first side plate 1261, so as to increase the contact area between the motor 151 and the mounting frame 12, and further improve the connection stability between the motor 151 and the mounting frame 12. Wherein, the two first side plates 1261 may be spaced apart from each other at an end remote from the base 1231 to define a first opening 1263 communicating with the first receiving groove 1262, and the driving member 15 may be mounted in the first receiving groove 1262 through the first opening 1263.

Optionally, the handle 10 further includes a battery 19, the battery 19 is located in the inner cavity and is located on two opposite sides of the display 13 in the thickness direction y of the mounting frame 12, the battery 19 is electrically connected to the driving member 15 and the display 13, and the driving member 15 and the battery 19 are distributed along the length direction x of the handle 10.

Optionally, the mounting frame 12 further includes two second side plates 1271, the two second side plates 1271 extend along the length direction x of the handle 10, the two second side plates 1271 are disposed at intervals along the direction perpendicular to the length of the handle 10, one ends of the two second side plates 1271 are connected to the base 1231, the other ends of the two second side plates 1271 extend toward a side far away from the observation window 112, a second accommodating groove 1272 is defined between the two second side plates 1271 and the base 1231, and the battery 19 is located in the second accommodating groove 1272, so as to improve the connection reliability between the battery 19 and the mounting frame 12. Wherein the ends of the two second side plates 1271 remote from the base 1231 may be spaced apart from each other to define a second opening 1273 in communication with the second housing 1272, the battery 19 may be mounted in the second housing 1272 through the second opening 1273.

Optionally, when the mounting frame 12 includes two first side plates 1261 and two second side plates 1271, one first side plate 1261 and one second side plate 1271 may extend along the length direction x of the handle 10 and be integrally connected, and the other first side plate 1261 and the other second side plate 1271 may extend along the length direction x of the handle 10 and be integrally connected, so as to improve the structural stability of the mounting frame 12.

Optionally, the outer wall surface of the mounting frame 12 is provided with one of a guide groove (not shown in the figure) and a guide post 128, the inner wall surface of the housing 11 is provided with the other of the guide groove and the guide post 128, the guide groove is located in the guide post 128, the guide groove extends along the length direction x of the handle 10, and when the mounting frame 12 and the display screen 13 are mounted into the inner cavity from one end of the handle 10, the guide post 128 slides along the extending direction of the guide groove, and the first surface 131 of the display screen 13 facing the observation window 112 is always spaced apart from the inner wall surface of the housing 11 to avoid the first surface 131 of the display screen 13 from being scratched. In the embodiment of the present utility model, the outer wall surface of the mounting frame 12 is provided with a guide post 128, and the inner wall surface of the housing 11 is provided with a guide groove.

The number of the guide posts 128 may be two, the number of the guide slots may be two, the two guide posts 128 may be disposed along the circumferential direction of the mounting frame 12 at intervals, and the two guide posts 128 and the two guide slots may be disposed in one-to-one correspondence. Specifically, when the mounting frame 12 includes two first side plates 1261 and two second side plates 1271, the two guide posts 128 may be disposed in one-to-one correspondence with the two first side plates 1261, and the two guide posts 128 may be disposed in one-to-one correspondence with the two second side plates 1271.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. A handle for an electric toothbrush, comprising:

2. The handle of claim 1, wherein the drive member comprises a motor coupled to the mounting bracket and having a flat surface opposite a surface of the mounting bracket in which the first mounting slot is provided.

3. The handle of claim 1, wherein the display screen has a first surface facing away from the mounting frame, the rigid circuit board has a second surface, the second surface is on the same side of the mounting frame as the first surface in a thickness direction of the mounting frame, and at least a portion of the second surface is further from a side of the mounting frame facing the viewing window than the first surface.

4. A handle according to claim 3, wherein the rigid circuit board comprises:

the base material and the display screen are positioned on the same side of the mounting frame along the thickness direction of the mounting frame and are connected with the mounting frame;

and more than one electronic component, wherein the electronic components are connected with one side of the base material, which is far away from the mounting frame, and at least one surface of the electronic components, which is far away from the base material, is far away from one side of the mounting frame, which is towards the observation window, relative to the first surface.

5. The handle according to claim 1, wherein the mount extends in a length direction of the handle, the mount is further formed with a communication hole penetrating the mount in a thickness direction of the mount, the handle further comprising:

the electric connection piece is arranged corresponding to the communication hole and electrically connected with the display screen and the hard circuit board, wherein the electric connection piece is connected to one surface of the hard circuit board, which faces the mounting frame.

6. The handle of claim 1, wherein the mounting bracket comprises:

a base;

the two first ribs are arranged on the base body at intervals, the two first ribs protrude out of the surface of the base body facing the observation window, and the two first ribs and the base body define the first mounting groove.

7. The handle of claim 6, wherein the rigid circuit board and the display screen are arranged at intervals along the length direction of the handle, each first rib extends along the length direction of the handle, and the handle further comprises an electrical connector located between two first ribs and electrically connecting the display screen and the rigid circuit board.

8. The handle of claim 7, wherein the mounting bracket further comprises:

the two second ribs are protruded out of the surface of the base body facing the observation window, the two second ribs are arranged at intervals, each second rib is located between the two first ribs, each second rib extends along the direction perpendicular to the length direction of the handle, a first mounting groove is defined among the base body, the two second ribs and the two first ribs, and the opposite side walls of the two first ribs are abutted against the display screen and/or the opposite side walls of the two second ribs are abutted against the display screen;

and in the two second convex ribs, an opening is arranged on one second convex rib close to the hard circuit board, and the electric connecting piece penetrates through the opening.

9. The handle according to claim 1, wherein the display screen and the hard circuit board are disposed at intervals in a length direction of the handle,

the display screen is closer to the output shaft of the handle relative to the hard circuit board; and/or, along the length direction of the handle, the ratio of the length of the display screen to the length of the hard circuit board is greater than or equal to 1/6 and less than or equal to 1/3.

10. The handle of claim 1, wherein the first mounting groove extends in a thickness direction of the mounting frame, and a ratio of a depth of the first mounting groove to a thickness of the mounting frame at the first mounting groove is greater than or equal to 0.5 and less than or equal to 1 along the thickness direction of the mounting frame; and/or

The projection of the display screen in a first plane is a first projection, the projection of the inner wall surface of the shell in the first plane is a second projection, the ratio of the maximum dimension of the first projection along a first direction to the maximum dimension of the second projection along the first direction at the first projection is greater than or equal to 0.7 and less than or equal to 0.95, the first plane is parallel to the first surface of the display screen facing the observation window and is parallel to the rotation axis of the output shaft of the handle, and the first direction is parallel to the first plane and is perpendicular to the rotation axis; and/or

The handle also comprises a buffer piece, and the buffer piece is arranged between the display screen and the inner wall surface of the shell; and/or

The mounting frame is also provided with a second mounting groove, and at least part of the hard circuit board is positioned in the second mounting groove.

11. The handle according to claim 1, further comprising:

the display screen and the hard circuit board are arranged at intervals in the length direction of the handle, the key is arranged at one end, close to the display screen, of the hard circuit board and is electrically connected with the hard circuit board, and the shell comprises an elastic pressing part corresponding to the key.

12. The handle according to claim 1, further comprising:

the batteries are positioned in the inner cavity and are positioned on two opposite sides of the thickness direction of the mounting frame with the display screen, the batteries are electrically connected with the driving piece and the display screen, and the driving piece and the batteries are distributed along the length direction of the handle.

13. The handle according to claim 1, wherein an outer wall surface of the mounting frame is provided with one of a guide groove and a guide post, an inner wall surface of the housing is provided with the other of the guide groove and the guide post, the guide groove is located in the guide post, the guide groove extends in a length direction of the handle, and when the mounting frame and the display screen are mounted into the inner cavity from one end of the handle, the guide post slides in the extending direction of the guide groove, and a surface of the display screen facing the viewing window is always spaced apart from the inner wall surface of the housing.

14. An electric toothbrush comprising a brush head and a handle as claimed in any one of claims 1 to 13, the brush head being connected to an output shaft of the handle.