WO2023241531A1

WO2023241531A1 - Multifunctional brush head and multifunctional electric toothbrush

Info

Publication number: WO2023241531A1
Application number: PCT/CN2023/099766
Authority: WO
Inventors: 雷德贵
Original assignee: 雷德贵
Priority date: 2022-06-13
Filing date: 2023-06-12
Publication date: 2023-12-21
Also published as: CN114869522A

Abstract

A multifunctional brush head (30) and a multifunctional electric toothbrush (1), relating to the technical field of electric toothbrushes. The multifunctional brush head (30) comprises: a connecting rod (36), a mounting base (32), a rotating shaft (33), an extension element (34), an extension shaft (35), a flexible insulation layer (37), a flexible pad (38), and a bristle board (31). The mounting base (32) is provided with a mounting cavity (321), and one end of the bristle board (31) is positioned inside the mounting cavity (321) and, by means of the rotating shaft (33), rotatably connected to the bottom of the mounting cavity (321). The connecting rod (36) is connected to the mounting base (32) and is provided with a control hole (361) which is in communication with the mounting cavity (321). The extension element (34) is connected to the rotating shaft (33), and the extension shaft (35) extends outward by means of the control hole (361) after being connected to the extension element (34). The flexible pad (38) is positioned inside the mounting cavity (321) and clamped between the bristle board (31) and the mounting base (32). The flexible insulation layer (37) is positioned in the gap between a side wall of the bristle board (31) and the mounting base (32). This design overcomes the problems with the brush heads of existing electric toothbrushes, where the brush head can only clean teeth in one direction, requiring constant handle rotation; additionally, when cleaning different parts of the teeth, continuous pushing and pulling of the toothbrush handle is needed, leading to a poor user experience.

Description

Multifunctional brush head and multifunctional electric toothbrush

Technical field

The present invention relates to the technical field of electric toothbrushes, and in particular to a multifunctional electric toothbrush.

Background technique

It is difficult to remove dental plaque by brushing with a traditional toothbrush. If you use a traditional toothbrush and brush your teeth in an improper way, the cleaning effect of the traditional toothbrush will be greatly reduced, and it may even cause serious damage to the gums and teeth. With the advancement of science and technology, people's requirements for living standards continue to increase. Electric toothbrushes are gradually recognized by the market because they can avoid the hazards of traditional toothbrushes while also bringing fun to people. However, when using the existing electric toothbrush head to clean the teeth, the brush head can only clean the teeth in one direction, and the brush handle needs to be continuously rotated; and when cleaning different parts of the teeth, the brush handle needs to be pushed and pulled continuously, and the brush handle needs to be continuously pushed and pulled when cleaning different parts of the teeth. Poor experience.

Therefore, it is necessary to improve the existing technology and propose more reasonable technical solutions to solve the problems existing in the existing technology.

Contents of the invention

In order to solve the problem that when using the existing electric toothbrush head to clean the teeth, the brush head can only clean the teeth in one direction, and the brush handle needs to be continuously rotated; and when cleaning different parts of the teeth, the brush handle needs to be pushed and pulled continuously. The problem of poor experience.

In the first aspect, embodiments of the present invention provide a multifunctional brush head. The multifunctional brush head includes: a connecting rod, a mounting base, a rotating shaft, a tensile member, a tensile shaft, a flexible isolation layer, a flexible pad, and a bristle board. ;in,

The mounting base is provided with an installation cavity. One end of the bristle plate is located in the installation cavity and is rotationally connected to the bottom of the installation cavity through a rotating shaft. The connecting rod is connected to the mounting base and has a control hole connected to the installation cavity. The tensile member is connected to the rotating shaft. Connection, the tensile shaft and the tensile member are connected and extend outward through the control hole. The flexible pad is located in the installation cavity and is clamped between the bristle plate and the mounting base. The flexible insulation layer is located on the side wall of the bristle plate and the mounting base. the gap between.

In one possible design, the tensile shaft is made of a flexible material.

In a possible design, a press fastener is provided on one side of the mounting base close to the bristle plate, and a press locking piece matching the press fastener is provided on one end of the rotating shaft close to the mounting base. The rotating shaft passes through the press fastener and the press lock. between pieces The fit is rotationally connected to the mounting base.

In one possible design, the edges of the bristle plate are rounded.

In one possible design, an annular buckle is provided at the opening of the mounting base, and the annular buckle is used to resist inwardly the bristle plate provided in the installation cavity.

In a possible design, the multifunctional brush head also includes a water stop ring, which is located at an end of the connecting rod away from the mounting base; the water stop ring is used to seal the connecting rod and the external brush handle when the connecting rod is connected to the external brush handle. The gap between the brush handles.

In a second aspect, embodiments of the present invention provide a multifunctional electric toothbrush, including a brush handle, a control mainboard, a brush rod, a battery assembly, a transmission structure and a multifunctional brush head as proposed in the above embodiments; wherein,

The battery assembly, control main board and transmission structure are located in the inner cavity of the brush handle. The transmission structure includes a driving motor, a gear assembly, a transmission main rod, a driven rod and a support frame; the drive motor, gear assembly and crankshaft assembly are all connected to the support frame. The transmission main rod has a transmission cavity, and the driven rod is inserted into the transmission cavity. The driving motor drives the crankshaft assembly to rotate through the gear assembly, so that the crankshaft assembly drives the transmission main rod and the driven rod to telescopically move. The driven rod is away from the battery assembly. One end of the main transmission rod is connected to the tensile shaft, and the brush rod is connected to the connecting rod; the bottom of the transmission main rod is connected to the gear assembly, and the gear assembly is also used to drive the transmission main rod to swing left and right; the battery assembly is electrically connected to the drive motor, and the brush rod is sleeved on The end of the transmission main rod away from the brush handle.

In one possible design, the end of the brush handle away from the battery component is provided with a telescopic opening, one end of the brush rod is located in the telescopic opening, and the end of the brush rod facing the battery component is provided with a silicone sleeve, and the outer periphery of the silicone sleeve is connected to the brush handle. The sleeve is used to seal the expansion opening.

In a possible design, the gear assembly includes a gear set, a resisting member and a drive shaft. The resisting member and the drive shaft are respectively connected to the gear set. A U-shaped groove is provided at the bottom of the transmission main rod, and the resisting member is located in the U-shaped On one or both sides of the slot, the gear set is used to drive the resistance member to rotate under the action of the drive motor, and the transmission main rod swings left and right under the action of the resistance member; the drive shaft is used to drive the crankshaft assembly under the action of the drive motor. Rotate so that the crankshaft assembly drives the transmission main rod and the driven rod to telescopically move; the drive shaft is transmission connected with the crankshaft assembly.

In a possible design, the crankshaft assembly includes a first crank rod, a second crank rod, a transmission meshing tooth and two sets of crankshaft rods. The first crank rod is connected to the second crank rod, and the two sets of crankshaft rods are respectively located on the first crank rod. and both sides of the second crank rod, both sides of the crankshaft rod are connected to the support frame through bearings, and the transmission meshing teeth are drivingly connected to the drive shaft;

The transmission main rod is connected to the first curved rod, and the driven rod is connected to the second curved rod; or the driven rod is connected to the first curved rod, and the transmission main rod is connected to the second curved rod.

The above description is only an overview of the technical solution of the present invention. In order to have a clearer understanding of the technical means of the present invention, it can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present invention more obvious and understandable. , the specific embodiments of the present invention are listed below.

Description of the drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be construed as limiting the invention. Also throughout the drawings, the same reference characters are used to designate the same components. In the attached picture:

Figure 1 is a schematic structural diagram of a multifunctional brush head;

Figure 2 is a partial structural diagram of a multi-functional brush head;

Figure 3 is a schematic structural diagram of a multifunctional electric toothbrush;

Figure 4 is an enlarged view of part A of the multifunctional electric toothbrush;

Figure 5 is an enlarged view of part B of the multifunctional electric toothbrush;

Figure 6 is a schematic structural diagram of the transmission structure;

Figure 7 is a schematic structural diagram of the transmission main rod;

Figure 8 is a schematic structural diagram of a multi-driven rod.

Icon: 30-Multifunctional brush head; 36-Connecting rod; 32-Mounting seat; 33-Rotation shaft; 34-Tension piece; 35-Tension shaft; 37-Flexible isolation layer; 38-Flexible pad; 31-Bristles Plate; 321-installation cavity; 361-control hole; 322-press fastener; 331-press locking piece; 39-annular buckle; 40-water stop ring; 1-multifunctional electric toothbrush; 20-brush handle; 21 -Control main board; 22-brush rod; 23-battery component; 10-transmission structure; 100-drive motor; 200-gear component; 300-crankshaft component; 400-transmission main rod; 500-driven rod; 600-support frame ; 410-Transmission cavity; 24-Telescopic opening; 25-Silicone sleeve; 210-Gear set; 220-Resisting member; 230-Drive shaft; 420-U-shaped groove; 310-First crank rod; 320-Second crank Rod; 330-transmission meshing teeth; 340-crankshaft rod; 350-bearing; 430-slotted hole; 510-driven shaft; 520-driven seat; 530-transverse groove; 540-external parts.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted here that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention.

Please refer to Figures 1 to 8, which illustrate a multifunctional brush head 30 proposed by an embodiment of the present invention. The multifunctional brush head 30 includes: a connecting rod 36, a mounting base 32, a rotating shaft 33, a stretching member 34, and a stretching shaft. 35. Flexible insulation layer 37, flexible pad 38 and bristle board 31.

Among them, the mounting base 32 has a mounting cavity 321. One end of the bristle plate 31 is located in the mounting cavity 321 and is rotationally connected to the bottom of the mounting cavity 321 through the rotating shaft 33. The connecting rod 36 is connected to the mounting base 32 and has a mounting cavity 321. Through the connected control hole 361, the stretching member 34 is connected to the rotating shaft 33, and the stretching shaft 35 is connected to the stretching member 34 through the control hole 361. The hole 361 extends outward, the flexible pad 38 is located in the installation cavity 321 and is clamped between the bristle plate 31 and the mounting base 32 , and the flexible insulation layer 37 is located in the gap between the side wall of the bristle plate 31 and the mounting base 32 .

The mounting base 32 is the mounting base for the multifunctional brush head 30. In order to improve the experience of using the multifunctional brush head 30, the thickness of the brush head base should be reduced as much as possible, and the thickness can be between 5 mm and 10 mm. The mounting base 32 is provided with a mounting cavity 321 . The end of the bristle plate 31 is located in the mounting cavity 321 and is rotationally connected to the bottom of the mounting cavity 321 through the rotating shaft 33 . The bristle plate 31 is connected to the mounting base 32 through the rotating shaft 33, and the bristle plate 31 can rotate through the rotating shaft 33; wherein, the bristle plate 31 is connected to the mounting base 32 through the rotating shaft 33, and can be connected in a snap-on manner. , convenient for production and assembly.

It can be clearly seen that the end of the bristle plate 31 away from the mounting base 32 is provided with bristles for cleaning teeth. The connecting rod 36 is connected to the mounting base 32 and has a control hole 361 connected to the mounting cavity 321; in order to ensure the regular clockwise or counterclockwise reciprocating motion of the bristle plate 31 around the rotating axis 33, a pulley is provided on the rotating axis 33. The stretching member 34 is connected to the stretching member 34 with the stretching shaft 35. The end of the stretching shaft 35 away from the rotation axis 33 extends outward through the control hole 361. When there is relative movement between the mounting base 32 and the stretching shaft 35, The rotating shaft 33 can be driven to rotate by the stretching member 34, so that the bristle plate 31 rotates around the rotating member.

The connecting rod 36 is connected to the brush rod 22, and the tensile shaft 35 is connected to the driven shaft 510. When the connecting rod 36 and the driven rod 500 move relative to each other, the bristle plate 31 can be driven to move regularly in the mounting base 32, either clockwise or Counterclockwise reciprocating motion. The multifunctional electric toothbrush 1 is designed using a multifunctional brush head 30; when brushing teeth, the multifunctional brush head 30 continuously expands and contracts while swinging, and the bristle plate 31 can also fine-tune the angle of the bristles. Among them, in order to facilitate the replacement of the multi-functional brush head 30, the stretching shaft 35 and the driven shaft 510 can be detachably connected through an external component 540; the external component 540 can be one of a variety of fastening structures. It is clear that the flexible insulation layer 37 can ensure that external moisture does not enter the installation cavity 321, thereby improving the cleanliness of the multifunctional brush head 30. The flexible pad 38 can resist the bristle plate 31 from the inside of the installation cavity 321 outward. , so that the bristle plate 31 has a certain degree of flexibility when brushing teeth, thereby improving the comfort of the multifunctional brush head 30. This solves the problem in the prior art that the electric toothbrush needs to move the brush handle back and forth to clean the teeth when used, and it is difficult to regularly control the brush head to clean the teeth during use, resulting in low comfort.

In one possible design, the tensile shaft 35 is made of flexible material.

In order to ensure the use effect of the multifunctional brush head 30 and facilitate the assembly of the multifunctional brush head 30, the stretching shaft 35 is made of flexible material. During installation, the stretching shaft 35 can be inserted into the control hole 361 first, and then the rotating shaft 33 can be fixed at the bottom of the installation cavity 321 . Moreover, when there is relative misalignment between the stretching shaft 35 and the connecting rod 36, the stretching shaft 35 made of flexible material can flexibly drive the bristle plate 31 to reciprocate clockwise or counterclockwise in the mounting seat 32, thereby improving the multifunctional brush. Head 30 comfort when using.

In one possible design, a pressing fastener 322 is provided on the side of the mounting base 32 close to the bristle plate 31 , and a pressing locking member 331 matching the pressing fastener 322 is provided on the end of the rotating shaft 33 close to the mounting base 32 . 33 is rotationally connected to the mounting base 32 through the cooperation between the pressing fastener 322 and the pressing locking component 331 .

In this embodiment, in order to facilitate the assembly of the multi-function brush head 30 and reduce the production cost of the multi-function brush head 30, a pressing fastener 322 is provided at one end of the mounting base 32 close to the bristle plate 31, and the rotating shaft 33 is close to the end of the mounting base 32. One end is provided with a press fastener 322 and a press lock 331 matching the press fastener 322; it can be understood that the press fastener 322 and the press lock 331 can be conventional fasteners. For example, the pressing fastener 322 is a convex buckle, and the pressing locking part 331 is a concave buckle. Through the fitting connection between the convex buckle and the concave buckle, it is ensured that the concave buckle can rotate relative to the concave buckle. Of course, other methods can be used to achieve this function. Structure.

In one possible design, the edges of the bristle plate 31 are rounded.

In order to ensure that the rotation of the bristle plate 31 around the rotation axis 33 will not be restricted by the edge of the mounting base 32, the edge of the bristle plate 31 is rounded; when the outer edge of the bristle plate 31 is not round, the thickness of the flexible isolation layer 37 can be increased or the flexibility can be changed. The shape of the isolation layer 37 is such that the bristle plate 31 can reciprocate clockwise or counterclockwise within a set range.

In one possible design, an annular buckle 39 is provided at the opening of the mounting base 32 , and the annular buckle 39 is used to inwardly resist the bristle plate 31 provided in the installation cavity 321 .

In order to ensure that the flexible insulation layer 37 does not leak when the multifunctional brush head 30 is used, and to ensure the stability of the bristle plate 31 installed on the mounting base 32, an annular buckle 39 can be provided at the opening of the mounting base 32 to secure the bristle plate 31 The position is defined while the flexible insulation layer 37 is hidden. Among them, the flexible insulating layer 37 can be an insulating layer made of silicone material with certain toughness and sealing properties.

In one possible design, the multifunctional brush head 30 also includes a water-stop ring 40 , which is located at an end of the connecting rod 36 away from the mounting base 32 ; the water-stop ring 40 is used to connect the connecting rod 36 and the external brush handle 20 When connecting, the gap between the connecting rod 36 and the external brush handle 20 is sealed.

In order to ensure sufficient sealing between the connecting rod 36 and the brush rod 22, a vertical water stop ring 40 is provided at one end of the connecting rod 36 away from the mounting base 32, so that the water stop ring 40 can be connected to the connecting rod 36 and the external brush handle 20. When, the gap between the connecting rod 36 and the external brush handle 20 is sealed.

In the second aspect, the embodiment of the present invention proposes a multifunctional electric toothbrush 1, including a brush handle 20, a control main board 21, a brush rod 22, a battery assembly 23, a transmission structure 10 and a multifunctional brush as proposed in the above embodiment. Head 30; among them,

The battery assembly 23, the control main board 21 and the transmission structure 10 are located in the inner cavity of the brush handle 20. The transmission structure 10 includes a driving motor 100, a gear assembly 200, a main transmission rod 400, a driven rod 500 and a support frame 600; the driving motor 100, The gear assembly 200 and the crankshaft assembly 300 are both connected to the support frame 600, and the main transmission rod 400 is provided with a transmission cavity 410. The driven rod 500 is disposed in the transmission cavity 410. The driving motor 100 drives the crankshaft assembly 300 to rotate through the gear assembly 200, so that the crankshaft assembly 300 drives the transmission main rod 400 and the driven rod 500 to telescopically move. The driven rod 500 is far away from the battery. One end of the assembly 23 is connected to the tensile shaft 35, and the brush rod 22 is connected to the connecting rod 36; the bottom of the transmission main rod 400 is connected to the gear assembly 200, and the gear assembly 200 is also used to drive the transmission main rod 400 to swing left and right; the battery assembly 23 is connected to the connecting rod 36. The driving motor 100 is electrically connected, and the brush rod 22 is sleeved on the end of the main transmission rod 400 away from the brush handle 20 .

The drive motor 100 can be a micro low-power drive reduction motor, such as a stepper motor, a coreless motor, a DC brush motor or a DC brushless motor, etc.; the support frame 600 is used to fix the drive motor 100, the gear assembly 200 and the crankshaft assembly 300. The transmission main rod 400 is provided with a transmission cavity 410, and the driven rod 500 is located in the transmission cavity 410. The driving motor 100 drives the gear assembly 200 to drive the crankshaft assembly 300 to rotate. The transmission main rod 400 and the driven rod 500 are both connected to the crankshaft assembly 300. , when the crankshaft assembly 300 rotates, the transmission main rod 400 and the driven rod 500 are driven to telescopically move. Among them, it is clear that since the main transmission rod 400 and the driven rod 500 are connected to different positions of the crankshaft assembly 300, the main transmission rod 400 can be set with an arc or an angle so that the driven rod 500 passes through the transmission cavity 410. Inside. At the same time, the transmission main rod 400 and the driven rod 500 can be connected at different positions of the crankshaft assembly 300, with the same or different telescopic amplitudes, so that the transmission main rod 400 and the driven rod 500 can move relative or synchronously.

The top of the main transmission rod 400 is used to connect the mounting seat 32 of the multi-function brush head 30, and the bottom of the main transmission rod 400 is connected to the gear assembly 200. The gear assembly 200 is also used to drive the main transmission rod 400 to swing left and right, which can make the connection with the main transmission rod 400 The multifunctional brush head 30 connected to the transmission main rod 400 can expand and contract up and down while swinging left and right, which enhances the enjoyment of using the multifunctional electric toothbrush 1 . Moreover, by setting the driven rod 500, the driven rod 500 can be connected with the tensile shaft 35 to drive the bristle plate 31 to reciprocate regularly clockwise or counterclockwise on the mounting base 32. By using the electric toothbrush transmission structure 10 designed Multi-functional brush head 30, when brushing teeth, the mounting base 32 swings at high speed. At the same time, the driven rod 500 can control the expansion and contraction state of the multi-functional brush head 30 through the stretching shaft 35. The stretching shaft 35 can also adjust the angle of the bristle plate 31. Fine tune. This solves the problem in the prior art that the electric toothbrush needs to move the brush handle back and forth to clean the teeth when used, and it is difficult to regularly control the brush head to clean the teeth during use, resulting in low comfort.

In one possible design, the end of the brush handle 20 away from the battery assembly 23 is provided with a telescopic opening 24, one end of the brush rod 22 is located in the telescopic opening 24, and the end of the brush rod 22 facing the battery assembly 23 is provided with a silicone sleeve 25. The silicone The outer periphery of the sleeve 25 is connected to the brush handle 20 , and the silicone sleeve 25 is used to seal the telescopic opening 24 .

In this embodiment, by providing the telescopic opening 24, it is possible to prevent the user's lips from being pinched by the telescopic movement of the brush rod 22 when brushing teeth with the multifunctional brush head 30 corresponding to the multifunctional electric toothbrush 1; at the same time, the silicone cover 25 is provided to prevent the user from brushing teeth. This prevents external moisture from entering when brushing teeth with the multifunctional brush head 30 corresponding to the multifunctional electric toothbrush 1 .

In one possible design, the gear assembly 200 includes a gear set 210, a resistor 220 and a drive shaft 230, The resisting member 220 and the driving shaft 230 are respectively connected to the gear set 210. A U-shaped groove 420 is provided at the bottom of the transmission main rod 400. The resisting member 220 is provided on one or both sides of the U-shaped groove 420. The gear set 210 is used for The resistance member 220 is driven to rotate under the action of the drive motor 100, and the transmission main rod 400 swings left and right under the action of the resistance member 220; the drive shaft 230 is used to drive the crankshaft assembly 300 to rotate under the action of the drive motor 100, so that the crankshaft The assembly 300 drives the transmission main rod 400 and the driven rod 500 to telescopically move; the driving shaft 230 is transmission connected with the crankshaft assembly 300.

In one possible design, the gear assembly 200 includes a gear set 210, a resisting member 220 and a driving shaft 230. The resisting member 220 and the driving shaft 230 are respectively connected to the gear set 210 in transmission, and a U-shaped groove is provided at the bottom of the transmission main rod 400. 420. The resisting member 220 is provided on one or both sides of the U-shaped groove 420. The gear set 210 is used to drive the resisting member 220 to rotate under the action of the driving motor 100. The transmission main rod 400 is driven by the resisting member 220. Swing left and right; the drive shaft 230 is used to drive the crankshaft assembly 300 to rotate under the action of the drive motor 100, so that the crankshaft assembly 300 drives the transmission main rod 400 and the driven rod 500 to telescopically move; the drive shaft 230 is transmission connected with the crankshaft assembly 300.

In a possible design, the crankshaft assembly 300 includes a first crank rod 310, a second crank rod 320, a transmission meshing tooth 330 and two sets of crankshaft rods 340. The first crank rod 310 is connected to the second crank rod 320, and the two sets of crankshaft rods The rods 340 are respectively located on both sides of the first crank rod 310 and the second crank rod 320. Both sides of the crank rod 340 are connected to the support frame 600 through bearings 350 respectively. The transmission meshing teeth 330 are transmission connected to the drive shaft 230; the transmission main rod 400 The driven rod 500 is connected to the first bent rod 310 and the driven rod 500 is connected to the second bent rod 320; or the driven rod 500 is connected to the first bent rod 310 and the transmission main rod 400 is connected to the second bent rod 320.

In this embodiment, the first crank rod 310 and the second crank rod 320 are connected. The distances from the first crank rod 310 and the second crank rod 320 to the axis center of the crankshaft rod 340 may be equal or different. When the crankshaft rod 340 rotates, it drives the third crank rod 340 . The first crank rod 310 and the second crank rod 320 rotate around the axis of the crankshaft rod 340, driving the transmission main rod 400 and the driven rod 500 to reciprocate. The transmission meshing teeth 330 are mainly used to connect the crankshaft rod 340 with the drive shaft 230, so that the gear set 210 drives the crankshaft rod 340 to rotate; among them, two sets of crankshaft rods 340 are provided, mainly for connecting, and the crankshaft rod 340 passes through The bearing 350 is connected to the support frame 600 to ensure the overall stability of the first curved bar 310 and the second curved bar 320 when they rotate.

In one possible design, a slotted hole 430 is provided in the middle of the transmission main rod 400, and the first crankshaft passes through the slotted hole 430.

A slot 430 is provided in the middle of the transmission main rod 400 so that when the resisting member 220 resists the transmission main rod 400, the first curved rod 310 will not be squeezed, and when the first curved rod 310 is transmitted, the transmission main rod 400 will be driven. Reciprocating motion.

In one possible design, the driven rod 500 includes a driven shaft 510 and a driven seat 520 connected to the bottom of the driven shaft 510. The driven seat 520 is provided with a transverse slot 530, and the second crank rod 320 is inserted into the transverse slot. 530, the driven rod 500 is located in the transmission cavity 410.

By providing the transverse groove 530 and the second crank rod 320 passing through the transverse groove 530, the driven shaft 510 can be driven to reciprocate when the second crank rod 320 rotates.

In short, the above descriptions are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

A multifunctional brush head, characterized in that the multifunctional brush head includes: a connecting rod, a mounting base, a rotating shaft, a tensile member, a tensile shaft, a flexible insulation layer, a flexible pad and a bristle board; wherein,

The mounting base is provided with an installation cavity. One end of the bristle plate is located in the installation cavity and is rotationally connected to the bottom of the installation cavity through the rotating shaft. The connecting rod is connected to the mounting base and is provided with an installation cavity. A control hole is connected to the installation cavity, the tensile member is connected to the rotation shaft, the tensile shaft extends outward through the control hole after being connected to the tensile member, and the flexible pad is In the installation cavity and clamped between the bristle plate and the mounting base, the flexible insulation layer is provided in the gap between the side wall of the bristle plate and the mounting base.
The multifunctional brush head according to claim 1, wherein the stretching shaft is made of flexible material.
The multifunctional brush head according to claim 1, wherein a pressing fastener is provided on one side of the mounting base close to the bristle plate, and a pressing fastener is provided on one end of the rotating shaft close to the mounting base. The press fastener matches the press lock part, and the rotation shaft is rotationally connected to the mounting base through the cooperation between the press fastener and the press lock part.
The multifunctional brush head according to claim 1, wherein the edge of the bristle plate is rounded.
The multifunctional brush head according to claim 1, wherein an annular buckle is provided at the opening of the mounting base, and the annular buckle is used to inwardly resist the bristle plate provided in the mounting cavity. .
The multifunctional brush head according to claim 1, characterized in that the multifunctional brush head further includes a water stop ring, and the water stop ring is provided at an end of the connecting rod away from the mounting base; The water ring is used to seal the gap between the connecting rod and the external brush handle when the connecting rod is connected to the external brush handle.
A multifunctional electric toothbrush, characterized in that it includes a brush handle, a control main board, a brush rod, a battery component, a transmission structure and a multifunctional brush head according to any one of claims 1 to 6; wherein,

The battery assembly, control main board and transmission structure are located in the inner cavity of the brush handle. The transmission structure includes a driving motor, a gear assembly, a main transmission rod, a driven rod and a support frame; the driving motor, gear The assembly and the crankshaft assembly are both connected to the support frame, the main transmission rod is provided with a transmission cavity, the driven rod is disposed in the transmission cavity, and the driving motor drives the crankshaft assembly through the gear assembly. Rotate, so that the crankshaft assembly drives the telescopic movement of the transmission main rod and the driven rod. One end of the driven rod away from the battery assembly is connected to the tensile shaft, and the brush rod is connected to the The rod is connected; the bottom of the main transmission rod is connected to the gear assembly, and the gear assembly is also used to drive the main transmission rod to swing left and right; the battery assembly is electrically connected to the drive motor, and the brush rod cover It is located at one end of the transmission main rod away from the brush handle.
The multifunctional electric toothbrush according to claim 7, wherein an telescopic opening is provided at one end of the brush handle away from the battery component, and one end of the brush rod is disposed in the telescopic opening, and the brush rod faces toward One end of the battery assembly is provided with a silicone sleeve, the outer periphery of the silicone sleeve is connected to the brush handle, and the silicone sleeve is used to seal the telescopic opening.
The multifunctional electric toothbrush according to claim 7, wherein the gear assembly includes a gear set, a resisting member and a driving shaft, and the resisting member and the driving shaft are respectively connected to the gear set in transmission, The bottom of the transmission main rod is provided with a U-shaped groove, the resisting member is provided on one or both sides of the U-shaped groove, and the gear set is used to drive the resisting member under the action of the driving motor. The main transmission rod swings left and right under the action of the resisting part; the driving shaft is used to drive the crankshaft assembly to rotate under the action of the driving motor, so that the crankshaft assembly drives the The transmission main rod and the driven rod telescopic movement; the driving shaft is drivingly connected to the crankshaft assembly.
The multifunctional electric toothbrush according to claim 9, wherein the crankshaft assembly includes a first crankshaft, a second crankshaft, transmission meshing teeth and two sets of crankshaft rods, the first crankshaft and the second crankshaft are The two sets of crankshaft rods are respectively located on both sides of the first crank rod and the second crank rod. Both sides of the crankshaft rod are connected to the support frame through bearings respectively. The transmission meshing teeth are connected to the drive Shaft transmission connection;

The main transmission rod is connected to the first curved rod, and the driven rod is connected to the second curved rod; or the driven rod is connected to the first curved rod, and the main transmission rod is connected to the second curved rod. The second curved rod connection.