CN219846922U

CN219846922U - Toothbrush handle and electric toothbrush

Info

Publication number: CN219846922U
Application number: CN202320752790.3U
Authority: CN
Inventors: 刘坤光; 丁科比; 郑小波
Original assignee: Guangzhou Stars Pulse Co Ltd
Current assignee: Guangzhou Stars Pulse Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-10-20
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a toothbrush handle and an electric toothbrush, wherein the toothbrush handle comprises a shell, a machine core and a display screen. The shell comprises a shell body and a display cover, wherein a mounting cavity is formed in the shell body, a mounting groove is further formed in the outer wall surface of the shell body, a display area is formed in the bottom wall of the mounting groove, the display cover is mounted in the mounting groove, and a light-transmitting area opposite to the display area is arranged on the display cover; the movement is arranged in the mounting cavity; the display screen is arranged on the movement and faces the display area; the outer wall surface of the light-transmitting area is configured to be concavely arranged towards the direction of the installation cavity. The technical scheme of the utility model realizes that the information on the display screen in the electric toothbrush is easy to be observed by a user.

Description

Toothbrush handle and electric toothbrush

Technical Field

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

Background

In the related art, an electric toothbrush is provided with a display screen, a display cover is arranged on the outer side of a handle shell of the electric toothbrush, which corresponds to the display screen, the display cover is straight or keeps consistent with the shape of the handle shell (for example, the outer wall surface is outwards convex in an arc shape), when the display cover in the arrangement mode has a gap between the display screen and the inner wall of the handle shell, the depth of the display screen is large, and the sight is easily blocked by a non-light-transmitting area of the handle shell when the display screen is observed.

Disclosure of Invention

The embodiment of the utility model provides a toothbrush handle and an electric toothbrush, which can enable information displayed by a display screen to be conveniently observed by a user.

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

the shell comprises a shell body and a display cover, wherein a mounting cavity is formed in the shell body, a mounting groove is further formed in the outer wall surface of the shell body, a display area is formed in the bottom wall of the mounting groove, the display cover is mounted in the mounting groove, and a light-transmitting area opposite to the display area is arranged on the display cover;

the movement is arranged in the mounting cavity; and

the display screen is arranged on the movement and faces the display area;

the outer wall surface of the light-transmitting area is configured to be concavely arranged towards the direction of the installation cavity.

According to the toothbrush handle provided by the embodiment of the utility model, the light-transmitting area corresponding to the display area on the display cover is arranged to be concave towards the direction of the mounting cavity, so that the light-transmitting area is formed into a structure similar to a concave lens, and the user can observe the vertically reduced virtual image of the whole appearance of characters or patterns on the display screen conveniently under the condition of a larger observation view angle by the characteristic of the imaging principle of the concave lens on the outer side of the light-transmitting area, so that the toothbrush handle is more convenient to use.

In some embodiments, the distance between the outer wall surface of the light-transmitting area and the display screen is gradually reduced from two opposite side parts to the middle part of the light-transmitting area in the length direction of the shell.

In some of these embodiments, the outer contour shape of the light-transmitting region is circular and the middle is concave.

In some of these embodiments, the wall thickness of the light-transmitting region gradually decreases from the circular outer ring to the middle.

In some embodiments, a difference between an outer wall surface of either one of opposite side portions of the light-transmitting region in the length direction of the housing and the display screen and a distance between an outer wall surface of a middle portion of the light-transmitting region and the display screen is 0.05 mm to 2 mm.

In some embodiments, a direction perpendicular to the length direction of the housing and parallel to the panel surface of the display screen is defined as a left-right direction, and the distance between the outer wall surface of the light-transmitting area and the display screen is gradually reduced from opposite side portions to the middle portion of the light-transmitting area in the left-right direction.

In some embodiments, a distance between an outer wall surface of either one of opposite side portions of the light-transmitting region in the left-right direction and the display screen is 0.05 mm to 1.5 mm from a distance between an outer wall surface of a middle portion of the light-transmitting region and the display screen.

In some embodiments, the area enclosed by the outer contour of the light-transmitting region is less than 6 square centimeters.

In some embodiments, the outer wall surface of the display cover does not protrude from the outer wall surface of the housing.

In some embodiments, the light-transmitting area is formed with a planar portion facing an inner wall surface of the display screen.

In some embodiments, the display area is a through hole formed in a bottom wall of the mounting groove, and the display cover further includes a limiting portion surrounding the planar portion and extending toward the display screen, and the limiting portion is embedded in the through hole.

In some embodiments, the display cover further includes a connection portion fixedly connected to the housing, the connection portion being located in the mounting cavity and connected to the limiting portion and the light-transmitting region, wherein a distance between the connection portion and the display screen is smaller than a distance between the planar portion and the display screen.

In some embodiments, the display cover further includes a base portion disposed in the mounting groove and connected to the light-transmitting region, and the base portion and a groove bottom wall of the mounting groove are respectively provided with a first mounting hole and a second mounting hole;

the toothbrush handle further comprises a key, wherein the key covers the first mounting hole, penetrates through the second mounting hole and is in butt joint with the machine core, and the outer wall surface of the key exposed out of the first mounting hole is a concave surface which is not protruded out of the outer wall surface of the base body.

In some of these embodiments, the two ends of the housing in the length direction include a connecting end for connecting to a brush head and a free end remote from the connecting end;

the display cover is positioned on the shell closer to the connecting end than the free end, and the light-transmitting area is positioned closer to the connecting end than the key.

In some embodiments, the movement includes a mounting bracket and a control circuit board fixed on the mounting bracket, the display screen is electrically connected with the control circuit board, a concave position is formed on an outer wall surface of the mounting bracket facing the display area, and the display screen is embedded and fixed in the concave position.

In a second aspect, embodiments of the present utility model provide an electric toothbrush comprising a toothbrush handle as described above and a brush head mounted on the toothbrush handle.

The electric toothbrush according to the embodiment of the utility model has the toothbrush handle of the embodiment, so that the information displayed on the display screen is easy to be observed by a user.

Drawings

In order to more clearly illustrate the embodiments of the present 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, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional structural view of an electric toothbrush of the related art;

FIG. 2 is a schematic perspective view of an embodiment of an electric toothbrush according to the present utility model;

FIG. 3 is an exploded view of the electric toothbrush of FIG. 2;

FIG. 4 is a cross-sectional view of the electric toothbrush of FIG. 2 taken from a lengthwise cross-section;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a cross-sectional view of the electric toothbrush of FIG. 2 taken from a cross-section perpendicular to the length direction;

FIG. 7 is a schematic perspective view of a display cover of the electric toothbrush of FIG. 2;

fig. 8 is a schematic perspective view of a mounting bracket in the electric toothbrush of fig. 2.

Reference numerals illustrate:

100. a toothbrush handle; 110. a housing; 111. a key; 120. a housing; 120a, a connecting end; 120b, free end; 121. a mounting cavity; 122. a mounting groove; 123. a display area; 123a, through holes; 124. a first mounting hole; 130. a display cover; 131. a light-transmitting region; 131a, a planar portion; 132. a limit part; 133. a connection part; 134. a base portion; 135. a second mounting hole; 140. a movement; 150. a mounting bracket; 151. a bin; 152. a concave position; 153. limiting convex ribs; 160. a motor assembly; 161. a driving motor; 162. a drive shaft; 170. a control circuit board; 180. a power supply unit; 190. a display screen; 200. a brush head; 300. an electric toothbrush.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

For the purpose of making 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 some aspects of the utility model as detailed in the accompanying claims.

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.

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 utility model belongs. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the electric toothbrush includes a toothbrush handle 100y and a brush head 200y driven by the toothbrush handle 100y, the toothbrush handle 100y has a housing and functional components disposed in the housing, the functional components include a display screen 190y, the display screen 190y can display related mode information when a user selects a mode, and the display screen 190y can also send out overpressure prompt information when the electric toothbrush is stressed excessively during use. In a related design, the housing includes a housing 120y and a display housing 130y disposed on the housing 120y, the display housing 130y being disposed opposite the display screen 190y to enable information displayed by the display screen 190y to be emitted outwardly. Typically, the display housing 130y will be configured to conform to the contour of the housing 120y, e.g., the housing 120y is generally cylindrical in configuration, and the display housing 130y is typically configured to have an outwardly convex arcuate wall configuration, such that the outer wall surface of the overall housing has a high degree of consistency.

However, in view of assembly, a certain distance, that is, a certain depth, is provided between the display screen 190y and the inner wall surface of the casing, and in fig. 1, a dot-dash line F indicates the outgoing light of the display screen 190 y; whereas E represents the eyes of the user, the dash-dot line from the eyes E to the toothbrush handle 100y indicates the eye light observed by the user, the area defined by the two eye light lines is the visual field range of the display screen 190y captured by the eyes of the user, because the outwardly convex arc-shaped wall body design of the display shell 130y, the display screen 190y is generally only designed to be matched with the size of the display shell 130y, or when the display screen 190y is larger, the display shell 130y needs to be designed to be relatively larger in size so as to observe the full view of the information on the display screen 190y, and the user can only observe the full view of the information on the display screen 190y at a specific angle (the angle facing the display screen 190y and the display shell 130y in the figure, i.e. the range defined by the two outgoing lights F), and when the user is at an inclined visual field angle and does not observe at the specific angle (i.e. does not face the display shell 130 y), the eye light of the user is easily blocked by the shell 120y (as in fig. 1, the shadow is generated in the electric shell 120, so that the shadow is not generated in the process D of the toothbrush is used.

Thus, referring to fig. 2 and 4, the present utility model proposes an electric toothbrush 300 that enables information on a display screen 190 in the electric toothbrush 300 to be easily observed even when the user is at various viewing angles. In an embodiment of the present utility model, the electric toothbrush 300 includes a toothbrush handle 100 and a brush head 200 mounted to the toothbrush handle 100. Toothbrush handle 100 includes a housing 110, a movement 140, and a display 190. Wherein, movement 140 is disposed within housing 110, and display screen 190 is mounted on movement 140.

The housing 110 includes a case 120 and a display cover 130, a mounting cavity 121 is formed in the case 120, a mounting groove 122 is further provided on an outer wall surface of the case 120, and a display area 123 is formed on a groove bottom wall of the mounting groove 122. In this embodiment, the housing 120 has a long rod shape, the display area 123 is a transparent portion, light of the display screen 190 can freely pass through the display area 123, and a main portion of the housing 120 except the display area 123 is made of a non-transparent material. The body portion of the housing 120 may be of a plastic material, for example, suitable exemplary materials that may be used include, but are not limited to, hard plastics such as polyethylene, polypropylene (PP), polyamide, polyester, cellulosic, SAN, acrylic, ABS, and other thermoplastics suitable for toothbrush manufacture, although the body portion of the housing 120 may also be of a metal material, such as an aluminum alloy, as the utility model is not limited in this regard.

The display cover 130 is mounted to the mounting groove 122, and the display cover 130 is provided with a light-transmitting region 131 facing the display region 123. In this embodiment, the whole display cover 130 is in a thin-wall structure, the display cover 130 covers the whole mounting groove 122, and the display cover 130 and the housing 120 can be welded, hot-melted, glued, and secondarily injection-molded together. The display cover 130 may be a light-permeable area 131, and other main structures are non-light-permeable, but the display cover 130 may also be integrally light-permeable. In the case where the display cover 130 is provided in such a manner that the light-transmitting region 131 is light-permeable and the main structure is light-impermeable, the material of the light-transmitting region 131 may be plastic, resin, glass, or the like, and the light-transmitting region 131 and the main structure thereof may be fixed together by welding, hot melting, gluing, overmolding, or the like. When the entire display cover 130 is light-transmissive, the display cover 130 may be made of plastic, resin, glass, or the like.

The movement 140 includes a mounting bracket 150, a motor assembly 160, a control circuit board 170, and a power supply unit 180, the mounting bracket 150 is an elongated structure extending in a length direction of the housing 110, and in one structural form, the mounting bracket 150 is formed with two compartments 151 arranged at intervals in a length direction thereof, the two compartments 151 being for mounting the motor assembly 160 and the power supply unit 180, respectively. The motor assembly 160 includes a motor having a drive shaft 162 extending from one end of the housing 120 and drivingly coupled to the brush head 200. The motor assembly 160 of the present utility model may be in the form of a motor for driving the brush head 200 in high frequency vibration for oral cleaning. The motor assembly 160 may also be configured to drive the brush head 200 to reciprocate to clean the oral cavity, without limitation. The power supply unit 180 is electrically connected to the control circuit board 170 and supplies power to the motor assembly 160 and the display screen 190. The power supply unit 180 may be a rechargeable battery, such as a lithium battery, although the power supply unit 180 may be in the form of a dry cell or other forms, which the present utility model is not limited to.

The display screen 190 and the control circuit board 170 of the present utility model are both fixed on the outer wall surface of the mounting bracket 150 and are arranged at intervals in the length direction of the mounting bracket 150. Specifically, referring to fig. 3 and 8, the mounting bracket 150 is formed with a concave portion 152 facing the outer wall surface of the display area 123, and the display screen 190 is embedded and fixed in the concave portion 152, wherein at least two elongated limiting ribs 153 may be disposed on the outer wall surface of the mounting bracket 150, the concave portion 152 is defined between at least two limiting ribs 153, and the display screen 190 is embedded between at least two limiting ribs 153, wherein the height of the limiting ribs 153 arranged in the length direction is equivalent to the thickness of the display screen 190, so that during the assembly process of the electric toothbrush 300, the limiting ribs 153 can well protect the display screen 190 in the process of pushing the whole movement 140 and the display screen 190 into the mounting cavity 121.

The display screen 190 is controlled by the control circuit board 170 and is arranged facing the display cover 130, wherein the toothbrush handle 100 further comprises a key 111, the key 111 is mounted on the housing 110 and abuts against the control circuit board 170, when the electric toothbrush 300 is used, a user can switch functions after triggering the key 111, the display screen 190 displays text or pattern information corresponding to the switched function modes, and light rays of the display screen 190 are transmitted outwards through the display area 123 and the light transmission area 131 so as to be observed by the user. Further, the present utility model configures the outer wall surface of the light-transmitting region 131 to be concavely disposed toward the mounting cavity 121, and it is understood that after the light-transmitting region 131 is concavely disposed, the display cover 130 is thinned in wall thickness at least in a portion of the light-transmitting region 131 as compared with, for example, the design of the arc-shaped outwardly convex display case 190y in the related design in fig. 1, so as to be able to form an approximately concave lens configuration.

Therefore, the light-transmitting area 131 corresponding to the display area 123 on the display cover 130 is concavely arranged towards the mounting cavity 121, so that the light-transmitting area 131 is formed into a structure similar to a concave lens, and the user can observe the vertically reduced virtual image of the whole characters or patterns on the display screen 190 conveniently under the condition of larger observation view angle by the characteristic of the imaging principle of the concave lens on the outer side of the light-transmitting area 131, so that the use is more convenient, meanwhile, the wall thickness of the display area 123 is at least internally thinned due to the fact that the display area 123 is arranged in the form of concave outer wall surface, the risk of shrinkage caused by larger wall thickness in the display area 123 in the forming production process of the display cover 130 can be greatly reduced, and the risk of forming pits in the display area 123 is caused, so that the surface flatness of the display area 123 can be ensured, the display effect is higher, and the product yield in the production process can be improved.

After the outer wall surface of the light-transmitting region 131 of the present utility model is configured to be concave toward the mounting cavity 121, various final structural forms are presented, which will be exemplified below.

Referring to fig. 5, in an embodiment, a distance between an outer wall surface of the light-transmitting area 131 and the display screen 190 is gradually reduced from two opposite sides to a middle of the light-transmitting area 131 in a length direction of the housing 120. In the illustrated exemplary embodiment, a distance between the outer wall surfaces of the side portions of the light-transmitting region 131 in the length direction of the case 120 and the display screen 190 is L1, wherein the distance L1 between the outer wall surfaces of the two side portions of the light-transmitting region 131 in the length direction of the case 120 and the display screen 190 may be equal or different, and a distance between the outer wall surface of the middle portion of the light-transmitting region 131 and the display screen 190 is L0, wherein L0 is smaller than L1, and L1 continuously changes during the approach from the side portion toward the middle portion. By means of the arrangement, the outer wall surface of the light transmitting area 131 forms a relatively smooth concave surface, which is favorable for forming the display effect of the concave lens, and as can be seen from fig. 5, two dot-dash lines S in fig. 5 represent emergent light formed by light rays emitted by the display screen 190 after passing through the light transmitting area 131 with concave lens characteristics, and a region defined between the two emergent light S is a visual field range which can be observed by eyes E of a user. In addition, the design of the utility model ensures that the concave transition of the outer wall surface of the light-transmitting area 131 is smooth, pits are not easy to generate on the surface of the light-transmitting area 131 due to shrinkage, and thus the product yield can be improved.

In addition, since the electric toothbrush 300 is in the inclined posture with a smaller included angle between the length direction and the horizontal plane after the user holds the toothbrush handle 100 during the actual use, the long axis direction of the structure of the concave lens formed by the light-transmitting region 131 is almost horizontal, and the human visual field extends in the transverse direction, i.e. almost horizontal direction, so that the two directions are coincident, which is more beneficial for the user to observe the content on the display screen 190 and is more convenient for use.

Further, the distance between the outer wall surface of either one of the opposite side portions of the light-transmitting region 131 in the length direction of the housing 120 and the display screen 190 is 0.05 to 2 mm (i.e., the difference between L1 and L0 is 0.05 to 2 mm) from the distance between the outer wall surface of the middle portion of the light-transmitting region 131 and the display screen 190. The difference between L1 and L0 of the present utility model may take values of 0.05 mm, 0.06 mm, 0.07 mm. When the difference is less than 0.05 mm, the positive effect on shrinkage is small, the risk of occurrence of pits increases, and when the difference is more than 2.0 mm, the middle part of the light-transmitting region 131 is too thin, the structural strength is small, the light-transmitting region is easy to break, and the curvature change is too large, the change of the content of the screen display observed by a user is inconsistent, and the display effect is reduced, so that the difference between L1 and L0 is set to be 0.05 mm to 2 mm. The display effect is good, the production yield is high, the structural strength is enough, and the like.

Referring to fig. 3 and fig. 6 in combination, in an embodiment, a direction perpendicular to the length direction of the housing 120 and parallel to the panel surface of the display screen 190 is defined as a left-right direction, and the distance between the outer wall surface of the transparent area 131 and the display screen 190 gradually decreases from opposite sides to the middle of the transparent area 131 in the left-right direction. The distance between the outer wall surface of the side portion of the light transmitting region 131 in the left-right direction and the display screen 190 is L2 as shown in the figure. The distance L2 between the outer wall surfaces of the two side portions of the light-transmitting area 131 in the left-right direction and the display screen 190 may be equal or different, and the distance between the outer wall surface of the middle portion of the light-transmitting area 131 and the display screen 190 is still L0, where L0 is smaller than L2, and in the process of approaching from the side portion to the middle portion in the left-right direction in this embodiment, L2 is continuously changed. By arranging so that the outer wall surface of the light-transmitting region 131 is also formed into a relatively smooth concave surface in the left-right direction, advantages similar to those of the previous embodiment can also be produced. It will be appreciated that by the arrangement of this embodiment, and by way of explanation in connection with the principles of the previous embodiment, it will be appreciated that the user can also readily observe the information displayed on the display screen 190 when the electric toothbrush 300 is in its upright position.

Further, a difference between the distance L2 between the outer wall surface of any one of the opposite side portions of the light-transmitting region 131 in the left-right direction and the display screen 190 and the distance L0 between the outer wall surface of the middle portion of the light-transmitting region 131 and the display screen 190 is 0.05 mm to 1.5 mm. (i.e., the difference between L2 and L0 is 0.05 mm to 2 mm). The difference between L2 and L0 of the present utility model may take values of 0.05 mm, 0.06 mm, 0.07 mm. When the difference is less than 0.05 mm, the positive effect on shrinkage is small, the risk of occurrence of pits increases, and when the difference is more than 1.5 mm, the middle part of the light-transmitting region 131 is too thin, the structural strength is small, the light-transmitting region is easy to break, the curvature change is too large, the change of the content of the screen display observed by a user is inconsistent, and the display effect is reduced, so that the difference between L2 and L0 is set to be 0.05 mm to 1.5 mm. The display effect is good, the production yield is high, the structural strength is enough, and the like.

Here, the light-transmitting region 131 of the present utility model may be separately provided as: the distance between the outer wall surface of the light-transmitting region 131 and the display screen 190 may be set to be smaller from the opposite side portions to the middle portion of the light-transmitting region 131 in the length direction of the housing 120: the distance between the outer wall surface of the light-transmitting region 131 and the display screen 190 gradually decreases from the opposite side portions to the middle portion of the light-transmitting region 131 in the left-right direction. Or both of the above arrangements may be present.

Referring to fig. 2 and 3 again, in another embodiment in which the outer wall surface of the light-transmitting region 131 is configured to be concavely disposed toward the mounting cavity 121, the outer contour shape of the light-transmitting region 131 may be circular and the middle portion may be concaved. The light-transmitting area 131 in this embodiment is circular, so that it has the function of focusing the gaze, and is more convenient to observe.

Further, in the case where the light-transmitting region 131 is circular, the wall thickness of the light-transmitting region 131 gradually decreases from the outer periphery of the circular shape to the middle. So set up, the outer wall surface of printing opacity region 131 is sunken to the middle part smoothly for the structural style of printing opacity region 131 is more pressed close to concave lens, thereby on the basis of obtaining the better display effect, can also be in the production shaping process, the stress that its everywhere produced is balanced relatively, thereby is difficult for because shrink produces the pit, so can further promote the production yield.

In view of the above, it will be appreciated that the present utility model utilizes the concave structure formed by recessing the outer wall surface of the light-transmitting region 131 to enable a user to obtain a larger viewing field, and can utilize the concave lens to form an erect reduced virtual image, so that the overall display of the patterns or characters on the display screen 190 can be performed through the light-transmitting region 131 even if the display screen 190 is large in size.

On the basis, the utility model further encloses the outer contour of the light-transmitting region 131 to an area smaller than 6 square centimeters. In this way, in the case that the electric toothbrush 300 is designed to be miniaturized as a whole so as to be convenient to hold, the size of the surface area of the toothbrush handle 100 occupied by the entire light-transmitting area 131 is not excessively large, so that the light-transmitting area 131 is not excessively abrupt in visual effect, the structural consistency of the housing 110 can be improved, the structural strength of the housing is ensured, and the cost can be correspondingly reduced.

Further, referring to fig. 5 and 6 in combination, a plane portion 131a is formed on an inner wall surface of the light-transmitting area 131 facing the display screen 190. The inner wall surface of the light-transmitting area 131 extends along the length direction of the electric toothbrush 300, wherein the plane 131a is provided with a plurality of plane parts 131a, the plane parts 131a are spliced along the circumferential direction of the electric toothbrush 300 to form an arch shape, so that the wall thickness of the light-transmitting area 131 tends to be reduced from side parts to middle parts on the inner wall surface and the outer wall surface, the structure formed by the light-transmitting area 131 is more similar to that of a concave lens, the structure of the concave lens is changed towards the middle part on the outer wall surface of the light-transmitting area 131, the change of the display content of a screen observed by a user is relatively consistent, and the display effect is further improved. Of course, in other embodiments, the planar portion 131a may be integrally formed as a single piece.

In an embodiment, referring to fig. 3, 5 and 7, the display area 123 is a through hole 123a formed on a bottom wall of the mounting groove 122, the display cover 130 further includes a limiting portion 132, the limiting portion 132 surrounds the planar portion 131a and extends toward the display screen 190, and the limiting portion 132 is embedded in the through hole 123 a. The limiting portion 132 of this embodiment is in a closed ring structure, and extends towards the display screen 190, and the outer wall surface of the limiting portion 132 and the hole wall of the through hole 123a may be in interference fit, so that the connection strength between the display cover 130 and the housing 120 can be enhanced through the setting of the limiting portion 132, and on the other hand, the stray light generated by other electronic components on the control circuit in the movement 140 can be blocked. It will be appreciated that the display area 123 may be a wall plate of the bottom wall of the mounting groove 122, in addition to the form of the through hole 123a, and the wall plate of the portion may be a light-transmitting form, and the display cover 130 may omit the structural design of the limiting portion 132 accordingly.

The display cover 130 further includes a connection portion 133 fixedly connected to the housing 120, where the connection portion 133 is located in the mounting cavity 121 and connected to the limiting portion 132 and the light-transmitting area 131, and a distance between the connection portion 133 and the display screen 190 is smaller than a distance between the planar portion 131a and the display screen 190. The connection portion 133 of the present embodiment achieves further fixation between the entire display cover 130 and the housing 120, and the distance between the connection portion 133 and the display screen 190 is smaller than the distance between the planar portion 131a and the display screen 190, so that the wall thickness at the position of the connection portion 133 is thicker than the wall thickness at the light-transmitting region 131, and thus the risk of pits generated by shrinkage of the thick portion of meat in the forming process of the light-transmitting region 131 can be further reduced.

In an embodiment, the display cover 130 further includes a base portion 134 disposed in the mounting groove 122 and connected to the light-transmitting region 131, and the base portion 134 and a bottom wall of the mounting groove 122 are respectively provided with a first mounting hole 124 and a second mounting hole 135.

Referring to fig. 2 and 3 again, the key 111 covers the first mounting hole 124 and passes through the second mounting hole 135 to be in contact with the movement 140, wherein an outer wall surface of the key 111 exposed from the first mounting hole 124 is a concave surface that does not protrude from an outer wall surface of the base portion 134.

The key 111 of this embodiment may be integrally fixed to the display cover 130 by means of two-shot molding, hot melting, gluing, etc. Through exposing button 111 in the outer wall surface of first mounting hole 124 for the concave surface of the outer wall surface of not protruding in base member portion 134 for electric toothbrush 300 in the use, the user can confirm button 111 position relatively easily through the sense of touch change, and the user need not to take electric toothbrush 300 out under the condition of observing from the oral cavity, also can be comparatively convenient carry out mode switching, so it is more convenient to use.

Further, both ends of the housing 120 in the length direction include a connection end 120a for connecting the brush head 200 and a free end 120b remote from the connection end 120a. The display cover 130 is located on the housing 120 closer to the connection end 120a than the free end 120b, and the light-transmitting region 131 is located closer to the connection end 120a than the key 111. In the present utility model, the display cover 130 is positioned at the middle upper portion of the electric toothbrush 300 near the connection end 120a in the upright state of the electric toothbrush 300. In use, a user will generally hold the toothbrush handle 100 at a middle-lower position near the free end 120b, and by disposing the display cover 130 at a middle-upper position near the connecting end 120a of the electric toothbrush 300, the user will not block the light-transmitting area 131 when pressing the key 111 when switching different modes, and will not need to withdraw the brush head 200 in a vibrating state from the oral cavity to observe the light-transmitting area 131, which is more convenient.

The outer wall surface of the display cover 130 does not protrude from the outer wall surface of the shell 120, namely, the corners of the display cover 130 are not exposed out of the mounting groove 122, so that the corners of the display cover 130 are not easy to be impacted by external foreign matters to cause structural damage in the daily use process, and the service life of the display cover is prolonged.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A toothbrush handle, comprising:

the movement is arranged in the mounting cavity; and

the display screen is arranged on the movement and faces the display area;

2. The toothbrush handle according to claim 1, wherein a distance between an outer wall surface of the light-transmitting region and the display screen becomes smaller gradually from opposite sides to a middle of the light-transmitting region in a length direction of the housing.

3. The toothbrush handle according to claim 2, wherein the light-transmitting region has a circular outer contour shape and a concave middle portion.

4. A toothbrush handle as recited in claim 3, wherein the wall thickness of the light-transmitting region tapers from the circular outer rim to the central portion.

5. The toothbrush handle according to claim 2, wherein a difference between an outer wall surface of either one of opposite sides of the light-transmitting region in a length direction of the housing and the display screen and a distance between an outer wall surface of a middle portion of the light-transmitting region and the display screen is 0.05 mm to 2 mm.

6. The toothbrush handle according to claim 2, wherein a direction perpendicular to a longitudinal direction of the housing and parallel to a plate surface of the display screen is defined as a left-right direction, and a distance between an outer wall surface of the light-transmitting region and the display screen is gradually reduced from opposite side portions to a middle portion of the light-transmitting region in the left-right direction.

7. The toothbrush handle according to claim 6, wherein a difference between an outer wall surface of either one of opposite sides of the light-transmitting region in the left-right direction and the display screen and a distance between an outer wall surface of a middle portion of the light-transmitting region and the display screen is 0.05 mm to 1.5 mm.

8. The toothbrush handle according to claim 1, wherein the light-transmitting region has an outer contour that encloses an area of less than 6 square centimeters.

9. The toothbrush handle according to claim 1, wherein an outer wall surface of the display cover does not protrude from an outer wall surface of the housing.

10. The toothbrush handle according to any one of claims 1 to 9, wherein an inner wall surface of the light-transmitting region facing the display screen is formed with a planar portion.

11. The toothbrush handle according to claim 10 wherein the display area is a through hole formed in a bottom wall of the mounting groove, the display cover further comprising a stopper portion surrounding the planar portion and extending toward the display screen, the stopper portion being embedded in the through hole.

12. The toothbrush handle according to claim 11 wherein the display cover further comprises a connecting portion fixedly connected to the housing, the connecting portion being located within the mounting cavity and connected to the spacing portion and the light transmissive region, wherein a distance between the connecting portion and the display screen is less than a distance between the planar portion and the display screen.

13. The toothbrush handle according to claim 10, wherein the display cover further comprises a base portion disposed in the mounting groove and connected to the light-transmitting region, and first and second mounting holes are respectively formed in the base portion and a groove bottom wall of the mounting groove;

14. The toothbrush handle according to claim 13, wherein both ends of the housing in the length direction include a connection end for connecting a brush head and a free end remote from the connection end;

15. A toothbrush handle as claimed in any one of claims 1 to 9, wherein the movement comprises a mounting bracket and a control circuit board fixed to the mounting bracket, the display screen is electrically connected to the control circuit board, a recess is formed in an outer wall surface of the mounting bracket facing the display area, and the display screen is embedded and fixed in the recess.

16. An electric toothbrush comprising a toothbrush handle as claimed in any one of claims 1 to 15 and a brush head mounted on the toothbrush handle.