Screen mounting components and electric toothbrush

Abstract

This application relates to the field of electric toothbrush technology, and discloses a screen mounting assembly and an electric toothbrush, suitable for installation on electronic devices. The electronic device has a receiving cavity with a screen mounting hole. The screen mounting assembly includes a screen lens, a flexible mounting part, and a support frame. Specifically, the screen lens is sealed over the screen mounting hole; the flexible mounting part is suitable for being disposed within the receiving cavity, and has a mounting cavity for mounting a display screen, as well as a first mounting hole and a display hole communicating with the mounting cavity. The display hole is suitable for corresponding to the screen mounting hole, and the outer periphery of the display hole is suitable for sealingly connecting with the outer periphery of the screen mounting hole; the support frame is disposed within the flexible mounting part for supporting part of the flexible mounting part. The screen mounting assembly and electric toothbrush disclosed in this application aim to solve or improve the problem of dust entering the screen area.

Description

Technical Field

[0001] This application relates to the field of electric toothbrush technology, specifically to screen mounting components and electric toothbrushes. Background Technology

[0002] Electric toothbrushes are essential daily cleaning products. High-end electric toothbrushes now feature screen displays for easy interaction with consumers. However, the lack of a sealed structure between the screen and the lens means users often experience dust buildup after a period of use, leading to unclear displays and a poor user experience. Furthermore, dust accumulation in the screen during production can cause rework, reducing assembly efficiency and increasing production costs.

[0003] In related technologies, a soft rubber dustproof cover is used on electric toothbrushes for dust prevention. However, the soft rubber is relatively soft and can be scratched by the inner wall of the handle during assembly, causing it to deform and flip over, turning onto the screen display area and obscuring the display content. Furthermore, after deformation, the screen cannot be sealed to the outside world, and dust can still enter the screen area. Utility Model Content

[0004] In view of this, this application provides a screen mounting assembly and an electric toothbrush to solve or improve the problem of dust entering the screen area.

[0005] In a first aspect, this application provides a screen mounting assembly suitable for mounting on an electronic device, the electronic device having a receiving cavity with a screen mounting hole, the screen mounting assembly comprising:

[0006] The screen lens is sealed and covered on the screen mounting hole;

[0007] A flexible mounting part is adapted to be disposed within the receiving cavity. The flexible mounting part is provided with a mounting cavity for mounting a display screen, and a first mounting hole and a display hole communicating with the mounting cavity. The display hole is adapted to correspond to the screen mounting hole, and the outer periphery of the display hole is adapted to be sealed and connected to the outer periphery of the screen mounting hole.

[0008] A support frame is disposed within the flexible mounting portion to support a portion of the flexible mounting portion.

[0009] In this embodiment, the screen lens is sealed on the screen mounting hole. The display screen is inserted into the mounting cavity through the first mounting hole, so that the display screen corresponds to the display hole. Then, the flexible mounting part is installed in the receiving cavity. During the movement of the flexible mounting part in the receiving cavity, the flexible mounting part rubs against the inner wall of the receiving cavity and is prone to deformation. The support frame can support the flexible mounting part, so that the part deformed by friction with the inner wall of the receiving cavity can recover, preventing the part of the flexible mounting part from tilting towards the axis of the display hole and turning over, thus blocking the display screen. At the same time, the flexible mounting part can be squeezed against the outer periphery of the screen mounting hole, so that the flexible mounting part is squeezed and deformed, increasing the contact area with the outer periphery of the screen mounting hole and improving the sealing effect. A screen area is formed between the screen lens and the display hole, and the screen lens and the display hole can seal the screen area.

[0010] In one optional embodiment, the outer periphery of the display hole protrudes along a first direction to form a sealing portion, the sealing portion being adapted to be sealed and connected with the outer periphery of the screen mounting hole, and a portion of the support frame being disposed within the sealing portion; a first inclined surface is provided on one side of the sealing portion away from the display hole, the first inclined surface being inclined along the first direction and toward the axis of the display hole.

[0011] In one optional embodiment, the flexible mounting portion extends a connecting plate along a second direction from one side of the first mounting hole, and a first limiting portion is provided at the end of the connecting plate away from the mounting hole.

[0012] The flexible mounting portion is provided with a second limiting portion on the side opposite to the first mounting hole along the second direction. The second limiting portion and the first limiting portion are used to limit the position of the display screen.

[0013] Wherein, the first direction intersects with the second direction.

[0014] In one optional embodiment, the second limiting portion has a second mounting hole that communicates with the mounting cavity.

[0015] In an optional embodiment, a screen decorative element is further included. The screen decorative element is installed in the screen mounting hole and has a through hole that corresponds to the display hole. One side of the screen decorative element along the first direction is sealed to the outer periphery of the screen mounting hole, and the other side is sealed to the sealing part.

[0016] In one alternative embodiment, a sealing plate is provided on the side of the screen decorative component near the sealing portion, and the sealing plate is sealed to the sealing portion.

[0017] In one optional embodiment, the inner wall of the through hole is provided with multiple annular grooves along the first direction.

[0018] In one alternative embodiment, a sealant is provided between the screen lens and the screen mounting hole.

[0019] In one alternative embodiment, the support frame includes:

[0020] A ring frame is disposed within the sealing part, and the inner hole of the ring frame is coaxially arranged with the display hole;

[0021] A first support plate is disposed within the flexible mounting section and is connected to the periphery of the ring frame;

[0022] The second support plate is disposed within the flexible mounting section and is connected to the first support plate.

[0023] Secondly, this application also provides an electric toothbrush, comprising:

[0024] Screen mounting components;

[0025] The handle is provided with the receiving cavity, the receiving cavity has the screen mounting hole, and a brush head is provided at one end of the handle;

[0026] A motor bracket is disposed within the receiving cavity, and the bottom of the flexible mounting portion is connected to the motor bracket.

[0027] A motor is mounted on the motor bracket, and the output shaft of the motor is connected to the brush head via a transmission. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of an electric toothbrush according to an embodiment of this application;

[0030] Figure 2 for Figure 1 Sectional view of AA;

[0031] Figure 3 This is a schematic diagram of the structure of a flexible mounting portion in a screen mounting assembly according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of a screen mounting assembly according to an embodiment of the present application, in which a display screen is installed after removing the screen lens;

[0033] Figure 5 This is a schematic diagram of a screen mounting assembly with the screen lens removed, according to an embodiment of this application.

[0034] Figure 6 This is a schematic diagram of a screen mounting assembly with the screen lens removed, according to another embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the flexible mounting part and the display screen in a screen mounting assembly according to an embodiment of this application;

[0036] Figure 8 for Figure 7 A sectional view along the middle edge BB;

[0037] Figure 9 for Figure 7 A sectional view along the center CC.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Screen lens; 2. Flexible mounting part; 201. Mounting cavity; 202. First mounting hole; 203. Display hole; 204. Sealing part; 2041. First inclined surface; 205. Connecting plate; 206. First limiting part; 207. Second limiting part; 208. Second mounting hole; 3. Support frame; 301. Annular frame; 302. First support plate; 303. Second support plate; 4. Screen decorative part; 401. Annular groove; 5. Sealing plate; 6. Sealant; 7. Handle; 8. Display screen; 9. Annular protrusion; 10. Brush head; X, first direction; Y, second direction. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Electric toothbrushes are essential daily cleaning products. High-end electric toothbrushes now feature screen displays for easy interaction with consumers. However, the lack of a sealed structure between the screen and the lens means users often experience dust buildup after a period of use, leading to unclear displays and a poor user experience. Furthermore, dust accumulation in the screen during production can cause rework, reducing assembly efficiency and increasing production costs.

[0044] In related technologies, a soft rubber dustproof cover is used on electric toothbrushes for dust prevention. However, this soft rubber is relatively soft and can be scratched by the inner wall of the handle during assembly, causing it to deform and flip over, obscuring the screen display area. Furthermore, the deformed screen cannot be sealed to the outside environment, allowing dust to still enter the screen area. Therefore, this application provides a screen mounting assembly and an electric toothbrush to solve or improve the problem of dust entering the screen area.

[0045] The following is combined with Figures 1 to 9 This describes an embodiment of the present application.

[0046] According to an embodiment of this application, in one aspect, a screen mounting assembly is provided, which is suitable for mounting on an electronic device. The electronic device is provided with a receiving cavity, and the receiving cavity has a screen mounting hole. The screen mounting assembly includes: a screen lens 1, a flexible mounting part 2, and a support frame 3.

[0047] Specifically, such as Figures 1 to 3As shown, the screen lens 1 is sealed and covered on the screen mounting hole; the flexible mounting part 2 is adapted to be disposed in the receiving cavity, the flexible mounting part 2 is provided with a mounting cavity 201 for mounting the display screen 8, and a first mounting hole 202 and a display hole 203 communicating with the mounting cavity 201. The display hole 203 is adapted to correspond to the screen mounting hole, and the outer periphery of the display hole 203 is adapted to be sealed and connected with the outer periphery of the screen mounting hole; the support frame 3 is disposed in the flexible mounting part 2 for supporting part of the flexible mounting part 2, and the outer periphery of the display hole 203 protrudes along the first direction X to form a sealing part 204. The sealing part 204 is adapted to be sealed and connected with the outer periphery of the screen mounting hole, and part of the support frame 3 is disposed in the sealing part 204.

[0048] In this embodiment, such as Figures 1 to 3 As shown, the screen lens 1 is sealed on the screen mounting hole, and the display screen 8 is inserted into the mounting cavity 201 through the first mounting hole 202, so that the display screen 8 corresponds to the display hole 203. Then, the flexible mounting part 2 is installed in the receiving cavity. During the movement of the flexible mounting part 2 in the receiving cavity, the flexible mounting part 2 rubs against the inner wall of the receiving cavity and is prone to deformation. The support frame 3 can support the flexible mounting part 2 and can restore the sealing part 204 after deformation. This prevents the sealing part 204 from being deformed due to friction with the inner wall of the receiving cavity and unable to recover, causing the axis biased towards the display hole 203 to flip and block the display screen 8. At the same time, the sealing part 204 is a flexible component and can be squeezed against the outer periphery of the screen mounting hole, so that the sealing part 204 is squeezed and deformed, increasing the contact area with the outer periphery of the screen mounting hole and improving the sealing effect. A screen area is formed between the screen lens 1 and the sealing part 204, and the screen lens 1 and the sealing part 204 can seal the screen area.

[0049] It should be noted that the support frame 3 is set inside the flexible mounting part 2, which can also be interpreted as the flexible mounting part 2 wrapping around the support frame 3. The sealing part 204 is partially wrapped with the support frame 3. The support frame 3 can provide support for the sealing part 204, so that it can recover after deformation.

[0050] In some embodiments, such as Figure 2 As shown, an annular step is provided on the inner wall of the screen mounting hole. The screen lens 1 abuts against the annular step and is embedded in the annular step. The side of the screen lens 1 abuts against the longitudinal surface of the annular step, and the bottom edge of the screen lens 1 abuts against the transverse surface of the annular step. The side and bottom surfaces abut against different positions of the annular step to increase the contact area and improve the sealing effect.

[0051] In some embodiments, both the flexible mounting portion 2 and the sealing portion 204 are made of silicone.

[0052] In one embodiment, such as Figure 3As shown, a first inclined surface 2041 is provided on the side of the sealing part 204 away from the display hole 203. The first inclined surface 2041 is inclined along the first direction X and towards the axis of the display hole 203. The sealing part 204 has a cylindrical structure. The end of the sealing part 204 away from the display hole 203 narrows towards the axis of the display hole 203. The outer side of the narrowed part is the first inclined surface 2041.

[0053] In this embodiment, such as Figure 3 As shown, a first inclined surface 2041 is provided on the sealing part 204, which enables the flexible mounting part 2 to move in the receiving cavity. The first inclined surface 2041 can reduce the obstruction and friction between the sealing part 204 and other components in the receiving cavity, making it easier to move the flexible mounting part 2 and place it in a suitable position in the receiving cavity.

[0054] In one embodiment, such as Figure 3 As shown, on one side of the flexible mounting part 2 where the first mounting hole 202 is opened, a connecting plate 205 extends out along the second direction Y. A first limiting part 206 is provided at the end of the connecting plate 205 away from the mounting hole. A second limiting part 207 is provided on the side of the flexible mounting part 2 opposite to the first mounting hole 202 along the second direction Y. The second limiting part 207 and the first limiting part 206 are used to limit the display screen 8. The first direction X intersects with the second direction Y.

[0055] In this embodiment, such as Figure 3 As shown, a connecting plate 205 is provided on one side of the flexible mounting part 2. The connecting plate 205 can provide support for the part of the display screen 8 that extends out of the mounting cavity 201. After the part of the display screen 8 is installed in the mounting cavity 201, the display screen 8 located outside the mounting cavity 201 abuts against the first limiting part 206, and the part of the display screen 8 located inside the mounting cavity 201 abuts against the second limiting part 207. The first limiting part and the second limiting part 207 fix the display screen 8 on the flexible mounting part 2.

[0056] Specifically, such as Figure 3 As shown, the connecting plate 205 is a flexible plate. During the process of inserting the display screen 8 into the mounting cavity 201 through the mounting hole, it can deform to avoid the display screen 8. After the display screen 8 is installed, the flexible plate returns to its original position, and the first limiting part 206 abuts against the display screen 8 to limit the display screen 8.

[0057] Specifically, such as Figure 3 As shown, the connecting plate 205 and the flexible mounting part 2 are integrally formed or integrally injection molded.

[0058] In one embodiment, the second limiting part 207 has a second mounting hole 208 that communicates with the mounting cavity 201.

[0059] In this embodiment, the second mounting hole 208 facilitates the adjustment of the position of the display screen 8 in the mounting cavity 201 by the operator, making installation easier.

[0060] In some embodiments, such as Figure 3 and Figure 6 As shown, the second abutting part is the inner wall of the mounting cavity 201 on the side away from the first mounting hole 202, the display screen 8 abuts against the inner wall of the mounting cavity 201, and the second mounting hole 208 is formed on the inner wall of the mounting cavity 201.

[0061] In one embodiment, such as Figures 4 to 6 As shown, it also includes a screen decorative component 4, which is installed in the screen mounting hole. The screen decorative component 4 has a through hole that corresponds to the display hole 203. One side of the screen decorative component 4 along the first direction X is sealed to the outer periphery of the screen mounting hole, and the other side is sealed to the sealing part 204.

[0062] In this embodiment, the screen decoration 4 can decorate the edges of the display screen 8, making the image displayed on the display screen 8 more aesthetically pleasing.

[0063] In some embodiments, such as Figure 2 As shown, a portion of the inner wall of the screen mounting hole protrudes along its axial direction to form an annular protrusion 9. The screen decorative piece 4 is provided with an annular notch corresponding to the annular protrusion 9. The annular protrusion 9 abuts against the annular notch, which allows the screen decorative piece 4 to be installed in the screen mounting hole, facilitating the installation of the screen decorative piece 4.

[0064] In one embodiment, such as Figure 2 As shown, a sealing plate 5 is provided on the side of the screen decorative part 4 near the sealing part 204, and the sealing plate 5 is sealed to the sealing part 204.

[0065] In this embodiment, such as Figure 2 As shown, the sealing plate 5 and the sealing part 204 make sealing contact. The sealing part 204 is flexible and is pressed against the sealing plate 5. The sealing part 204 deforms, increasing the contact area between the sealing part 204 and the sealing plate 5 and improving the sealing effect.

[0066] In one embodiment, such as Figures 4 to 6 As shown, the inner wall of the through hole is provided with multiple annular grooves 401 along the first direction X.

[0067] In this embodiment, the multi-layered annular groove 401 makes the image displayed on the display screen 8 more aesthetically pleasing.

[0068] In one embodiment, such as Figure 2 As shown, a sealant 6 is provided between the screen lens 1 and the screen mounting hole.

[0069] In this embodiment, the sealant 6 connects the screen lens 1 to the annular step, thereby sealing the screen lens 1 with the inner wall of the screen mounting hole and improving the sealing effect.

[0070] Specifically, sealant 6 can be silicone sealant 6, acidic silicone sealant, structural silicone sealant, weather-resistant silicone sealant, polyurethane sealant 6, polysulfide sealant 6, acrylic sealant 6, butyl sealant 6, or epoxy sealant 6.

[0071] In one embodiment, such as Figures 7 to 9 As shown, the support frame 3 includes: a ring frame 301, a first support plate 302, and a second support plate 303.

[0072] Specifically, the ring frame 301 is disposed inside the sealing part 204, and the inner hole of the ring frame 301 is coaxially disposed with the display hole 203; the first support plate 302 is disposed inside the flexible mounting part 2 and is connected to the periphery of the ring frame 301; the second support plate 303 is disposed inside the flexible mounting part 2 and is connected to the first support plate 302.

[0073] In this embodiment, such as Figures 7 to 9 As shown, the annular frame 301 is disposed inside the sealing part 204, which enables the deformed sealing part 204 to recover. The first support plate 302 is disposed in the transverse part of the flexible mounting part 2 and is connected to the annular frame 301, which improves the stress and recovery ability of the annular frame 301. The first support plate 302 can support the transverse part of the flexible mounting part 2. The second support plate 303 is disposed in the longitudinal part of the flexible mounting part 2 and can support the longitudinal part of the flexible mounting part 2. The second support plate 303 is connected to the first support plate 302, which improves the recovery ability of the flexible mounting part 2.

[0074] Specifically, the ring frame 301, the first support plate 302, and the second support plate 303 are integrally formed.

[0075] Specifically, the support frame 3 is a metal frame. The support frame 3 has good support and resilience, and can provide a certain rigid support for the flexible installation part 2 so that it can recover after deformation.

[0076] According to an embodiment of this application, another aspect provides an electric toothbrush, including: a screen mounting assembly, a handle 7, a motor bracket, and a motor.

[0077] Specifically, such as Figures 1 to 9 As shown, the handle 7 is provided with a receiving cavity, and the receiving cavity has a screen mounting hole. One end of the handle 7 is provided with a brush head 10. The motor bracket is disposed in the receiving cavity, and the bottom of the flexible mounting part 2 is connected to the motor bracket. The motor is disposed on the motor bracket, and the output shaft of the motor is connected to the brush head 10 for transmission.

[0078] When installing the display screen 8, first insert the display screen 8 into the mounting cavity 201 through the first mounting hole 202, so that the display screen 8 abuts against the inner wall of the mounting cavity 201. Adjust the position of the display screen 8 in the mounting cavity 201 through the second mounting hole 208. At the same time, the two ends of the display screen 8 abut against the first abutment part and the second abutment part respectively, and install the display screen 8 on the flexible mounting part 2. Simultaneously, install the screen decorative piece 4 in the screen mounting hole. The annular protrusion 9 in the screen mounting hole abuts against the annular notch on the screen decorative piece 4, and set the screen decorative piece 4 in the screen mounting hole. Apply sealant 6 to the annular step. The screen lens 1... The flexible mounting part 2 is embedded in the annular step and connected to the sealant 6. The flexible mounting part 2 is inserted into the receiving cavity through the opening at the bottom of the handle 7 and moves in the receiving cavity. During the movement, the flexible mounting part 2 rubs against the cavity wall and deforms. The metal frame assists the flexible mounting part 2 in restoring its shape. In particular, when the sealing part 204 touches the sealing plate 5, the sealing part 204 is provided with a first inclined surface 2041. The first inclined surface 2041 reduces the resistance between the sealing part 204 and the sealing plate 5, making it easier to install the flexible mounting part 2 in a suitable position. After installation, there is pressure between the sealing part 204 and the sealing plate 5 in the first direction X, which improves the sealing effect.

[0079] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended application.

Claims

1. A screen mounting assembly suitable for mounting on an electronic device, the electronic device having a receiving cavity, the receiving cavity having a screen mounting hole, characterized in that, The screen mounting components include: The screen lens (1) is sealed on the screen mounting hole; A flexible mounting part (2) is adapted to be disposed in the receiving cavity. The flexible mounting part (2) is provided with a mounting cavity (201) for mounting a display screen (8), and a first mounting hole (202) and a display hole (203) communicating with the mounting cavity (201). The display hole (203) is adapted to correspond to the screen mounting hole, and the outer periphery of the display hole (203) is adapted to be sealed to the outer periphery of the screen mounting hole. A support frame (3) is disposed inside the flexible mounting part (2) for supporting part of the flexible mounting part (2).

2. The screen mounting assembly according to claim 1, characterized in that, The outer periphery of the display hole (203) protrudes along the first direction (X) to form a sealing part (204), the sealing part (204) is adapted to be sealed and connected with the outer periphery of the screen mounting hole, and a portion of the support frame (3) is disposed in the sealing part (204); The sealing part (204) has a first inclined surface (2041) on one side away from the display hole (203), and the first inclined surface (2041) is inclined along a first direction (X) and toward the axis of the display hole (203).

3. The screen mounting assembly according to claim 2, characterized in that, The flexible mounting part (2) has a first mounting hole (202) on one side, and a connecting plate (205) extends out along the second direction (Y). A first limiting part (206) is provided at the end of the connecting plate (205) away from the mounting hole. The flexible mounting part (2) is provided with a second limiting part (207) on the side opposite to the first mounting hole (202) along the second direction (Y). The second limiting part (207) and the first limiting part (206) are used to limit the display screen (8). Wherein, the first direction (X) intersects with the second direction (Y).

4. The screen mounting assembly according to claim 3, characterized in that, The second limiting part (207) has a second mounting hole (208) that communicates with the mounting cavity (201).

5. The screen mounting assembly according to claim 2, characterized in that, It also includes a screen decorative component (4), which is installed in the screen mounting hole. The screen decorative component (4) has a through hole that corresponds to the display hole (203). One side of the screen decorative component (4) along the first direction (X) is sealed to the outer periphery of the screen mounting hole, and the other side is sealed to the sealing part (204).

6. The screen mounting assembly according to claim 5, characterized in that, The screen decorative part (4) is provided with a sealing plate (5) on the side near the sealing part (204), and the sealing plate (5) is sealed to the sealing part (204).

7. The screen mounting assembly according to claim 5, characterized in that, The inner wall of the through hole is provided with multiple annular grooves (401) along the first direction (X).

8. The screen mounting assembly according to any one of claims 1 to 7, characterized in that, A sealant (6) is provided between the screen lens (1) and the screen mounting hole.

9. The screen mounting assembly according to any one of claims 2 to 7, characterized in that, The support frame (3) includes: A ring frame (301) is disposed inside the sealing part (204), and the inner hole of the ring frame (301) is coaxially disposed with the display hole (203); The first support plate (302) is disposed in the flexible mounting part (2) and is connected to the periphery of the ring frame (301); The second support plate (303) is disposed in the flexible mounting part (2) and is connected to the first support plate (302).

10. An electric toothbrush, characterized in that, include: The screen mounting assembly as described in any one of claims 1 to 9; The handle (7) is provided with the receiving cavity, the receiving cavity is provided with the screen mounting hole, and a brush head (10) is provided at one end of the handle (7); A motor bracket is disposed within the receiving cavity, and the bottom of the flexible mounting part (2) is connected to the motor bracket; The motor is mounted on the motor bracket, and the output shaft of the motor is connected to the brush head (10) for transmission.

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