Electric toothbrush

Abstract

The embodiment of the utility model relates to the technical field of electric toothbrushes, discloses an electric toothbrush, and aims to solve the technical problem that different oral cleaning requirements of users are met through different electric toothbrushes in the prior art. The controller is arranged in the handle shell, connected with the first shaft end of the transmission shaft in the handle shell and used for controlling the transmission shaft to swing left and right. One of the swinging brush head assembly and the rotating brush head assembly is connected with the second shaft end of the transmission shaft and is used for working under the driving of the transmission shaft so as to clean the oral cavity; the rotary brush head assembly comprises a swing part, the swing part is connected with the second shaft end, the swing part is controlled to rotate in a reciprocating mode through left-right swing of the transmission shaft so as to control the rotary brush head assembly to clean the oral cavity, and the brush heads of two different cleaning modes are matched through the handle assembly. Therefore, the requirements of users with different cleaning intensities are met.

Description

Technical Field

[0001] This utility model relates to the field of smart toothbrush technology, specifically to an electric toothbrush. Background Technology

[0002] With the increasing diversification of oral care needs, traditional electric toothbrushes, with their fixed cleaning modes, are gradually failing to meet user demands. Their brush head structures have a single, non-switchable movement pattern, failing to satisfy different users' needs for varying cleaning intensities and struggling to meet the special care requirements of those with sensitive teeth. For example, cleaning stubborn plaque requires a high-frequency rotating brush head to provide strong friction, while those with sensitive gums need a low-frequency oscillation to avoid over-stimulation. Current technology generally uses software to adjust vibration intensity to achieve different cleaning intensities, but this still relies on the linear movement of a single brush head, failing to fundamentally switch cleaning modes. Users still need to purchase multiple single-function electric toothbrushes for different needs, resulting in resource waste and inconvenience. Utility Model Content

[0003] In view of the above problems, this utility model provides an electric toothbrush to solve the technical problem in the prior art that different electric toothbrushes are needed to meet the different oral cleaning needs of users.

[0004] According to one aspect of the present invention, an electric toothbrush is provided, the electric toothbrush comprising:

[0005] Handle assembly, including handle housing and drive shaft;

[0006] A controller is located inside the handle housing and is connected to the first shaft end of the drive shaft inside the handle housing. It is used to control the drive shaft to swing left and right at a preset frequency.

[0007] One of the oscillating brush head assembly and the rotating brush head assembly is connected to the second shaft end of the drive shaft and is used to operate under the drive of the drive shaft to clean the oral cavity;

[0008] The rotating brush head assembly includes a swinging component connected to the second shaft end, which is used to control the swinging component to reciprocate by swinging the transmission shaft left and right, so as to control the rotating brush head assembly to clean the oral cavity.

[0009] In one alternative embodiment, the rotating brush head assembly includes: a first brush handle and a brush component;

[0010] The top of the first brush handle is provided with a mounting base, the brush is connected to the mounting base, and one end of the swing member passes through the bottom of the mounting base and connects to the bottom of the brush to drive the brush to rotate back and forth.

[0011] In one alternative embodiment, the brush component includes a brush and a rotating component; the brush is mounted on a first end of the rotating component, and a second end of the rotating component is embedded in the mounting base.

[0012] The oscillating member is connected to the bottom of the rotating member located within the mounting base to control the rotating member to reciprocate around its central axis.

[0013] In one alternative embodiment, the end of the swing member connected to the rotating member is provided with an abutment rod, and the length direction of the abutment rod is perpendicular to the length direction of the swing member;

[0014] A receiving groove is provided at the second end, and the abutting rod is placed in the receiving groove to fix the swinging member and the rotating member.

[0015] In one alternative embodiment, the rotating brush head assembly further includes: a first base, wherein the first brush handle has a first mounting cavity inside, and the first base is fixedly mounted in the first mounting cavity; an opening of the first mounting cavity is provided at the bottom end of the first brush handle, and a first slot is provided on the first base, wherein the second shaft end enters from the opening and is inserted into the first slot to fix the connection between the rotating brush head assembly and the handle assembly;

[0016] The end of the first base away from the second shaft end is connected to the swing member, and the transmission shaft controls the swing member to reciprocate through the first base.

[0017] In one alternative embodiment, the first base has a first protrusion and a second protrusion, the first protrusion abutting against the bottom of the mounting base, and the second protrusion being disposed below the first protrusion and spaced at a predetermined distance from the first protrusion.

[0018] The end of the swing member away from the mounting base passes through the first protrusion and the second protrusion; the end of the swing member away from the rotating member is provided with an enlarged portion; the swing member is fitted with an elastic member, which is located between the enlarged portion and the second protrusion.

[0019] In an alternative embodiment, the rotating brush head assembly further includes a fixing rod, one end of which is connected to the first base and the other end of which is fixedly connected to the mounting base.

[0020] In one alternative embodiment, the rotating brush head assembly further includes a first silicone element disposed within the first mounting cavity, and the bottom of the first base abuts against the bottom of the first silicone element to fix the first base within the first mounting cavity.

[0021] In one alternative embodiment, the oscillating brush head assembly includes a second brush handle and a second base;

[0022] The second brush handle has a brush at one end and a second mounting cavity inside the other end, and the second base is fixedly installed in the second mounting cavity;

[0023] The second base is provided with a second slot, and the second shaft end is inserted into the second slot to secure the connection between the oscillating brush head assembly and the handle assembly.

[0024] In one alternative embodiment, the controller includes a drive element, an eccentric wheel, and a movable assembly, the movable assembly being connected to the drive element via the eccentric wheel, the drive element driving the eccentric wheel to rotate and controlling the deflection of the movable assembly;

[0025] The movable kit is connected to the first shaft end, and the movable kit is used to control the left and right swing of the drive shaft through the first shaft end.

[0026] This utility model provides an electric toothbrush that uses a handle assembly to match two different cleaning modes of brush heads: a swing brush head assembly and a rotating brush head assembly, thereby meeting the different cleaning intensity needs of different users.

[0027] In an oscillating electric toothbrush, a controller directs the drive shaft to oscillate left and right at a preset frequency, directly controlling the oscillating brush head assembly to generate high-frequency left-right vibrations to produce sound waves for oral cleaning. In a rotary electric toothbrush, an oscillating component is incorporated within the rotary brush head assembly. One end of the oscillating component is connected to a second shaft, and the other end is connected to the bristles. The high-frequency left-right oscillation of the drive shaft controls the rotation of the oscillating component, which in turn controls the reciprocating rotation of the bristles in the rotary brush head assembly for oral cleaning. This design allows users to meet various cleaning needs by matching different brush head assemblies with a single handle assembly, providing convenience while avoiding resource waste.

[0028] This invention also solves the problem of mismatch between the motion trajectory in the handle assembly and the motion trajectory of the brush in the brush head assembly by setting a swinging component, with one end of the swinging component connected to the drive shaft and the other end connected to the brush. When the left and right swinging motion of the drive shaft is transmitted to the brush, the brush is controlled to reciprocate and rotate, thus solving the problem of mismatch between the motion trajectory in the handle assembly and the motion trajectory of the brush in the brush head assembly.

[0029] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 This is a schematic diagram of the structure of the rotating brush head assembly in the electric toothbrush provided in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the oscillating brush head assembly used in the electric toothbrush provided in an embodiment of the present invention.

[0033] Figure 3 This is a cross-sectional view of an electric toothbrush with a oscillating brush head assembly provided in an embodiment of the present invention.

[0034] Figure 4 This is a cross-sectional view of a rotating brush head assembly used in an electric toothbrush provided in an embodiment of the present invention.

[0035] Figure 5 This is a perspective view of the handle assembly in an electric toothbrush provided in an embodiment of the present invention.

[0036] Figure 6 This is an exploded view of the handle assembly in an electric toothbrush provided in an embodiment of the present invention.

[0037] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0038] Figure 8 This is a schematic diagram of the internal structure of the handle assembly in an electric toothbrush provided in an embodiment of the present invention.

[0039] Figure 9 This is a schematic diagram of the structure of the rotating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0040] Figure 10 This is an exploded view of the rotating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0041] Figure 11 This is a cross-sectional view of the rotating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0042] Figure 12 This is a schematic diagram of the internal structure of the rotating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0043] Figure 13 This is a cross-sectional view of the rotating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0044] Figure 14 This is a cross-sectional view of the oscillating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0045] Figure 15 This is a cross-sectional view of the oscillating brush head assembly in an electric toothbrush provided in an embodiment of the present invention.

[0046] Figure 16 This is a cross-sectional view of the handle assembly in an electric toothbrush provided in an embodiment of the present invention.

[0047] Figure 17 This is a cross-sectional view of the handle assembly in an electric toothbrush provided in an embodiment of the present invention.

[0048] The reference numerals in the detailed embodiments are as follows:

[0049] 100. Electric toothbrush;

[0050] 1. Handle assembly; 11. Handle shell; 12. Drive shaft; 121. First shaft end; 122. Second shaft end; 13. Second silicone part; 14. Rotary shaft bracket; 15. Mechanism bracket; 16. Power supply; 17. Charging structure; 18. Switch button; 19. Gear adjustment button;

[0051] 2. Controller; 21. Drive unit; 22. Eccentric wheel; 221. Connecting rod; 23. Movable kit; 231. Moving slot; 24. PLC control board;

[0052] 3. Swinging brush head assembly; 31. Second brush handle; 32. Second base; 321. Column; 322. Second slot; 323. Snap-fit ​​groove; 33. Second mounting cavity; 331. First cavity; 332. Second cavity; 333. Third cavity; 334. Snap-fit ​​part;

[0053] 4. Rotating brush head assembly; 41. Swinging component; 411. Abutting rod; 412. Enlarged part; 42. First brush handle; 421. Mounting base; 422. First mounting cavity; 423. Cavity opening; 424. Groove; 424. Positioning component; 425. Fixing hole; 43. Brush component; 431. Rotating component; 4321. First end; 4322. Second end; 434. Positioning hole; 435. Fixing component; 436. Alternating channel; 437. Receiving groove; 44. First base; 441. First slot; 442. First protrusion; 443. Second protrusion; 444. Through hole; 45. Elastic component; 46. Fixing rod; 47. First silicone component; 471. Insertion channel; 5. Brush. Detailed Implementation

[0054] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0055] Traditional electric toothbrushes have a single mode of motion in their drive structure, which fails to meet the needs of different users. At the same time, the traditional drive shaft structure is only compatible with specific brush head types. Forcibly replacing them with incompatible brush heads can easily lead to problems such as increased mechanical wear and decreased drive efficiency. For example, when a rotating brush head is connected to a vibrating drive shaft, the conflict in the movement trajectory can cause abnormal motor load, which not only increases energy consumption but may also shorten the life of the device due to structural fatigue. Therefore, there is an urgent need for an electric toothbrush with different cleaning modes and a brush head that is compatible with the drive structure.

[0056] Please see Figure 1 and Figure 2 This embodiment provides an electric toothbrush 100, which includes a handle assembly 1. For example... Figure 5 As shown, the handle assembly 1 includes a handle housing 11 and a drive shaft 12; the controller 2 is disposed inside the handle housing 11 and connected to the first shaft end 121 of the drive shaft 12 within the handle housing 11, and is used to control the drive shaft 12 to swing left and right at a preset frequency; one of the swinging brush head assembly 3 and the rotating brush head assembly 4 is connected to the second shaft end 122 of the drive shaft 12, and is used to work under the drive of the drive shaft 12 to clean the oral cavity. The rotating brush head assembly 4 includes a swinging member 41, which is connected to the second shaft end 122. When the drive shaft 12 swings left and right, it drives the swinging member 41 to reciprocate, thereby controlling the rotation of the rotating brush head assembly 4 to clean the oral cavity.

[0057] In the prior art, both the oscillating electric toothbrush 100 that moves back and forth (sonic electric toothbrush 100) and the rotary electric toothbrush 100 that rotates back and forth use separate brush head assemblies and separate handle assemblies 1 to be paired one-to-one, ensuring that the cleaning motion mode of the brush head assembly matches the motion mode of the drive shaft 12 in the handle assembly 1.

[0058] This embodiment uses a handle assembly 1 to match two different cleaning modes of brush heads: a swing brush head assembly 3 and a rotating brush head assembly 4, thereby meeting the different cleaning intensity needs of different users. A controller 2 controls the drive shaft 12 to swing back and forth at a preset frequency.

[0059] like Figure 3As shown, when the oscillating brush head assembly 3 (sonic brush head assembly) is connected to the second shaft end 122, the oscillating brush head assembly 3 and the handle assembly 1 are stably connected. The drive shaft 12 rotates back and forth, causing the oscillating brush head assembly 3 to generate high-frequency oscillation perpendicular to the length direction of the handle assembly 1. The brush bristles 43 in the brush head assembly generate mechanical vibration, i.e., sound waves, during the oscillation. The water flow caused by the high-frequency vibration (sonic waves) penetrates deep into the interdental spaces, removing plaque and food debris, and effectively cleaning the oral cavity.

[0060] like Figure 4 As shown, when the rotating brush head assembly 4 is connected to the second shaft end 122, one end of the swing member 41 is connected to the second shaft end 122 of the transmission shaft 12, and the other end is connected to the brush. By the left and right reciprocating swing of the transmission shaft 12, the swing member 41 is driven to reciprocate and rotate, so as to control the brush on the rotating brush head assembly 4 to reciprocate and rotate to clean the oral cavity.

[0061] This embodiment provides a handle assembly 1 to accommodate two different cleaning modes of brush heads: an oscillating brush head assembly 3 and a rotating brush head assembly 4, thereby meeting the needs of users with different cleaning intensities. The controller 2 controls the drive shaft 12 to oscillate left and right at a preset frequency, directly controlling the oscillating brush head assembly 3 to generate sound waves for cleaning the oral cavity through high-frequency left-right vibration. An oscillating element 41 is provided within the rotating brush head assembly 4, connected to the second shaft end 122, so that the high-frequency left-right oscillation of the drive shaft 12, controlled by the oscillating element 41, allows the rotating brush head assembly 4 to reciprocate and rotate to clean the oral cavity.

[0062] When users need to clean stubborn dental plaque, the rotating brush head assembly 4 is connected to the second shaft end 122 of the drive shaft 12 to provide a powerful cleaning of the oral cavity; when the user's teeth are sensitive, the oscillating brush head assembly 3 is connected to the second shaft end 122 of the drive shaft 12 to clean the residue through vibration and sound waves.

[0063] In this embodiment, as Figure 6 and Figure 7 As shown, the controller 2 includes a drive component 21, an eccentric wheel 22, and a movable kit 23. The movable kit 23 is connected to the drive component 21 through the eccentric wheel 22. The drive component 21 drives the eccentric wheel 22 to rotate, which controls the movable kit 23 to deflect. The movable kit 23 is connected to the first shaft end 121. The movable kit 23 is used to control the transmission shaft 12 to swing left and right through the first shaft end 121.

[0064] like Figure 6 and Figure 8As shown, the controller 2 also includes a PLC control board 24. The drive unit 21 is connected to the PLC control board 24 and the power supply 16 in the handle assembly 1 to ensure that the drive unit 21 can rotate at a preset frequency. The eccentric wheel 22 is installed at one end of the output of the drive unit 21. When the drive unit 21 rotates at high speed, it drives the eccentric wheel 22 to rotate at high speed as well. The eccentric wheel 22 is movably connected to the movable kit 23, so that during the high-speed rotation of the eccentric wheel 22, the first shaft end 121 of the transmission shaft 12 passes through the movable kit 23 and is fixedly connected to it. When the eccentric wheel 22 rotates, the movable kit 23 is driven by the rotating eccentric wheel 22 to swing back and forth within a certain range, thereby driving the transmission shaft 12 connected to the movable kit 23 to swing left and right, so that the transmission shaft 12 swings left and right at a preset frequency.

[0065] like Figure 7 As shown, the movable assembly 23 has an elongated moving groove 231, and a connecting rod 221 is provided at the end of the eccentric wheel 22 away from the driving member 21. One end of the connecting rod 221 is fixedly connected to the eccentric wheel 22, and the other end is inserted into the moving groove 231. The movable assembly 23 and the eccentric wheel 22 are movably connected by the connecting rod 221 inserted into the moving groove 231. When the eccentric wheel 22 rotates at high speed, the connecting rod 221 moves in a circle around the central axis of the eccentric wheel 22, causing the movable assembly 23 to deflect, which in turn causes the transmission shaft 12 to swing left and right. By setting the moving groove 231, when the connecting rod 221 moves away from the transmission shaft 12 in the moving groove 231, the force of the moving rod on the movable assembly 23 can be reduced, preventing the movable assembly 23 from causing the transmission shaft 12 to move closer to the connecting rod 221, even if the transmission shaft 12 only deflects left and right.

[0066] In this embodiment, as Figure 9 As shown, the rotating brush head assembly 4 includes: a first brush handle 42 and a brush part 43; the top end of the first brush handle 42 is provided with a mounting base 421, the brush part 43 is connected to the mounting base 421, and one end of the swing member 41 passes through the bottom of the mounting base 421 and connects to the bottom of the brush part 43 to drive the brush part 43 to reciprocate.

[0067] The first brush handle 42 is used to connect with the handle assembly 1, so that the overall structure of the electric toothbrush 100 is complete and the internal structure is wrapped in the first brush handle 42 or the handle shell 11, ensuring the overall appearance and ease of use. At the same time, it prevents external dust and moisture from entering the first handle and the handle shell 11 and causing mess.

[0068] like Figure 10As shown, a mounting base 421 is provided at the end of the first brush handle 42 away from the handle housing 11. A groove 424 is provided on the side of the mounting base 421 near the brush component 43. One end of the brush component 43 is fixed in the groove 424, and the depth direction of the groove 424 is parallel to the length direction of the drive shaft 12. Figure 11 As shown, one end of the swing member 41 passes through the bottom of the mounting base 421 and is placed in the groove 424, ensuring that the bottom of the brush member 43 is connected to one end of the swing member 41. When the brush member 43 is installed in the groove 424, the central axis of the brush member 43 is perpendicular to the length direction of the drive shaft 12, and one end of the swing member 41 passes through the bottom of the mounting base 421 and is connected to the bottom of the brush member 43. When the drive shaft 12 swings left and right at a preset frequency, the end of the swing member 41 near the drive shaft 12 reciprocates, causing the other end of the swing member 41 connected to the brush member 43 to also reciprocate. Through the connection between the brush member 43 and the swing member 41, the brush member 43 is driven to reciprocate around its central axis.

[0069] The swing member 41 passes through the bottom of the mounting base 421. When the swing member 41 reciprocates, the connection position between the mounting base 421 and the swing member 41 provides a fixed point for the reciprocating rotation of the swing member 41. That is, when the two ends of the swing member 41 reciprocate, they rotate around this fixed point. This makes it so that when the drive shaft 12 swings left and right, the direction of the reciprocating rotation of the end of the swing member 41 close to the drive shaft 12 is opposite to the direction of the reciprocating rotation of the other end, ensuring that the brush member 43 can reciprocate normally to clean the oral cavity.

[0070] In this embodiment, as shown in the figure, the brush component 43 includes a brush and a rotating component 431; the brush is mounted on the first end 4321 of the rotating component 431, and the second end 4322 of the rotating component 431 is embedded in the mounting base 421; the swing component 41 is connected to the bottom of the rotating component 431 located in the mounting base 421 to control the rotating component 431 to reciprocate around the central axis of the rotating component 431.

[0071] like Figure 12 As shown, the first end 4321 of the rotating component 431 is a disc-shaped structure. The central axis of the rotating component 431 passes through the geometric center point of the end face of the first end 4321 and is perpendicular to the end face of the first end 4321. A brush is fixedly fitted onto the first end 4321 and is used to clean the oral cavity when the rotating component 431 reciprocates. The size of the second end 4322 of the rotating component 431 is smaller than the size of the first end 4321. The second end 4322 is embedded in the mounting base 421, that is, the second end 4322 is embedded in the groove 424.

[0072] like Figure 11As shown, the rotating component 431 and the mounting base 421 are connected by a positioning component 424. One end of the positioning component 424 is fixed inside the mounting base 421, and the other end of the positioning component 424 protrudes from the bottom of the groove 424. A positioning hole 434 is provided at the second end 4322 for matching and connecting with the positioning component 424 protruding from the bottom of the groove 424, thus connecting and fixing the rotating component 431 and the mounting base 421. The length direction of the positioning component 424 coincides with the direction of the central axis of the rotating component 431. When the rotating component 431 reciprocates around its central axis, that is, when the rotating component 431 reciprocates around the central axis of the positioning component 424.

[0073] like Figure 13 As shown, a fixing hole 425 is provided at the top of the mounting base 421. One end of the fixing member 435 passes through the fixing hole 425, protrudes from the inner wall of the mounting base 421, and is placed in the groove 424. At the top of the second end 4322 of the rotating member 431, an arc-shaped clearance channel 436 is provided around the central axis of the rotating member 431. The fixing member 435 passes through the inner wall of the mounting base 421 and is placed in the clearance channel 436. When the rotating member 431 rotates, or when the rotating member 431 reciprocates, the fixing member 435 remains in the clearance channel 436, fixing the rotating member 431 to reciprocate around its central axis. When the rotating member 431 moves in other ways, the fixing member 435 can contact the inner wall of the clearance channel 436, preventing the rotating member 431 from moving further.

[0074] In this embodiment, as Figure 13 As shown, the end of the swing member 41 connected to the rotating member 431 is provided with an abutment rod 411, and the length direction of the abutment rod 411 is perpendicular to the length direction of the swing member 41; a receiving groove 437 is provided at the second end 4322, and the abutment rod 411 is placed in the receiving groove 437 to fix the swing member 41 and the rotating member 431.

[0075] A receiving groove 437 is provided at the bottom of the second end 4322 near the swing member 41. The abutment rod 411 is built into the receiving groove 437 to fix the connection between the swing member 41 and the rotating member 431, so that the rotating plate can reciprocate around its central axis during the reciprocating rotation of the swing member 41, thereby driving the brush installed on the second end 4322 to reciprocate.

[0076] The bottom of the rotating member 431 is provided with a slot, and the length dimension of the slot is the same as the length dimension of the receiving groove 437. When the abutting rod 411 is inserted into the receiving groove 437, one end of the swing member 41 passes through the slot and connects with the abutting rod 411 in the receiving groove 437 in the length direction of the swing member 41.

[0077] In another implementation of this embodiment, the end of the swing member 41 near the brush member 43 is integrally formed with the brush member 43, so that the connection between the brush member 43 and the swing member 41 is stable.

[0078] In this implementation, such as Figure 10 and Figure 11 As shown, the rotating brush head assembly 4 also includes a first base 44, and a first mounting cavity 422 is provided inside the first brush handle 42. The first base 44 is fixedly installed in the first mounting cavity 422. An opening 423 of the first mounting cavity 422 is provided at the bottom end of the first brush handle 42, such as... Figure 13 As shown, a first slot 441 is provided on the first base 44, and the second shaft end 122 enters from the cavity 423 and is inserted into the first slot 441 to fix the connection between the rotating brush head assembly 4 and the handle assembly 1; the end of the first base 44 away from the second shaft end 122 is connected to the swing member 41, and the drive shaft 12 controls the swing member 41 to reciprocate through the first base 44.

[0079] Specifically, the first base 44 is installed inside the first mounting cavity 422, and the end of the first base 44 away from the cavity opening 423 abuts against the mounting base 421 to prevent the first mounting base from shaking inside the first mounting cavity 422 and affecting the reciprocating rotation of the swing member 41. At the same time, by connecting the second shaft end 122 and the swing member 41 through the first base 44, the power transmission between the drive shaft 12 and the swing member 41 can be guaranteed.

[0080] like Figure 13 As shown, a first slot 441 is provided at the end of the first base 44 away from the swing member 41. The depth direction of the first slot 441 extends along the length direction of the first base 44. The second shaft end 122 of the drive shaft 12 is inserted into the first mounting cavity 422 from the cavity opening 423. After being inserted into the first slot 441, the first base 44 and the second shaft end 122 are sleeved and connected. When the drive shaft 12 swings left and right, it drives the first base 44 to swing left and right as a whole. The left and right swinging of the first base 44 drives one end of the swing member 41 connected to the first base 44 to reciprocate.

[0081] The first mounting cavity 422 is connected to the inside of the mounting base 421. The swing member 41 passes through the mounting base 421 and is placed on one side wall of the groove 424 and connected to the rotating member 431. When the controller 2 controls the first base 44 to swing left and right through the transmission shaft 12, one end of the swing member 41 connected to the first base 44 swings back and forth. When one end of the swing member 41 swings back and forth, the other end also begins to swing back and forth. The two ends of the swing member 41 swing back and forth in opposite directions, thereby driving the rotating member 431 to rotate back and forth around its central axis, so that the brush installed on the rotating member 431 rotates back and forth around the central axis to clean the user's mouth.

[0082] In this embodiment, as Figure 13 As shown, the first base 44 is provided with a first protrusion 442 and a second protrusion 443. The first protrusion 442 abuts against the bottom of the mounting base 421, and the second protrusion 443 is disposed below the first protrusion 442 and spaced at a predetermined distance from the first protrusion 442. The end of the swing member 41 away from the mounting base 421 passes through the first protrusion 442 and the second protrusion 443.

[0083] Specifically, the first protrusion 442 and the second protrusion 443 are structures formed by extending outward from the outer side of the first base 44 along a direction perpendicular to the length of the first base 44. For example... Figure 11 As shown, through holes 444 are provided in the first protrusion 442 and the second protrusion 443. The central axes of the two through holes 444 are parallel to the length of the first brush handle 42, and the central axes of the two through holes 444 coincide. The swing member 41 passes through the through holes 444 of the first protrusion 442 and the second protrusion 443 and is connected to the first base 44. The arrangement of the two through holes 444 ensures that the contact surface between the swing member 41 and the first base 44 is relatively large, so that the swing member 41 can reciprocate when the first base 44 swings left and right. At the same time, the first protrusion 442 and the second protrusion 443 are arranged at a certain distance along the length of the first base 44, increasing the number of connection points between the first base 44 and the swing member 41, and avoiding large changes in the positional relationship between the swing member 41 and the first base 44, thereby ensuring that the transmission between the first base 44 and the swing member 41 can proceed smoothly.

[0084] In this embodiment, as Figure 10 As shown, the swing member 41 has an enlarged portion 412 at the end away from the rotating member 431; the swing member 41 is fitted with an elastic member 45, which is located between the enlarged portion 412 and the second protrusion 443.

[0085] One end of the swing member 41 located in the mounting base 421 is connected to the rotating member 431 via the abutment rod 411, and the other end passes through the through hole 444 of the first protrusion 442 and the second protrusion 443 and then connects the swing member 41 and the first base 44 via the enlargement part 412. By setting the enlargement part 412, the swing member 41 is prevented from sliding out of the through hole 444, which would affect the transmission effect between the first base 44 and the swing member 41.

[0086] Meanwhile, the first protrusion 442 and the second protrusion 443 are arranged at a certain distance along the length of the first base 44, such as Figure 13As shown, the upper end of the elastic member 45 abuts against the bottom of the second protrusion 443, and the lower end of the elastic member 45 abuts against the top of the enlarged portion 412. During the reciprocating rotation of the lower end of the swing member 41 connected to the first base 44, the elastic member 45 generates a spring force on the lower end of the swing member 41 that is sleeved thereon, which is opposite to the direction of the force exerted by the first base 44 on the swing member 41. This spring force causes the swing member 41 to return to its original position, preventing the swing member 41 from failing to return to its original position in time after the first base 44 drives the swing member 41 to reciprocate, thus preventing the swing member 41 from failing to return to its original position and affecting the reciprocating rotation of the rotating member 431.

[0087] In this embodiment, as Figure 12 , Figure 13 As shown, the rotating brush head assembly 4 also includes a fixing rod 46, one end of which is connected to the first base 44, and the other end is fixedly connected to the mounting base 421. The fixing rod 46 connects the first base 44 and the mounting base 421, fixing the position of the first base 44 within the first mounting cavity 422, preventing changes in the distance between the first base 44 and the mounting base 421, and ensuring the transmission effect of the overall structure.

[0088] In this embodiment, as Figure 10 As shown, the rotating brush head assembly 4 also includes a first silicone element 47, which is disposed in the first mounting cavity 422, and the bottom of the first base 44 abuts against the bottom of the first silicone element 47 to fix the first base 44 in the first mounting cavity 422.

[0089] The first silicone element 47 is fixedly connected to the first mounting cavity 422, thus fixing the first silicone element 47 at the cavity opening 423 of the first mounting cavity 422. The top of the first base 44 is connected and fixed to the mounting base 421 via a fixing rod 46, and the bottom of the first base 44 abuts against the top of the first silicone element 47, so that the first base 44 is stably installed in the first mounting cavity 422, preventing the first base 44 from shaking along the length direction of the first base 44 in the first mounting cavity 422, which would affect the transmission connection between the first base 44 and the swinging element 41 and the transmission shaft 12.

[0090] like Figure 11As shown, the first silicone part 47 has an insertion channel 471 inside, which is used to accommodate the inserted part of the handle assembly 1, and the insertion channel 471 gradually decreases in the direction pointing to the first base 44, so that the handle assembly 1 and the rotating brush head assembly 4 are securely connected and installed. When the handle assembly 1 and the rotating brush head assembly 4 are installed and connected, the second shaft end 122 of the drive shaft 12 passes through the insertion channel 471 and is inserted into the first slot 441 from the bottom of the first base 44, thereby achieving a fixed connection between the drive shaft 12 and the first base 44. The handle assembly 1 is inserted into the insertion channel 471 of the first silicone part 47 and is fixedly connected to the first silicone part 47, so that the handle assembly 1 and the rotating brush head assembly 4 are stably connected. This avoids the connection between the handle assembly 1 and the rotating brush head assembly 4 being unstable when the drive shaft 12 swings left and right at a preset frequency, which would lead to an unstable connection between the second shaft end 122 and the first base 44. This ensures the transmission between the drive shaft 12, the first base 44, and the swinging part 41, so that the brush on the rotating brush head assembly 4 can reciprocate at a preset frequency, thereby improving cleaning efficiency.

[0091] In this embodiment, as Figure 14 and Figure 15 As shown, the oscillating brush head assembly 3 includes a second brush handle 31 and a second base 32; one end of the second brush handle 31 is provided with a brush 5, and the other end is provided with a second mounting cavity 33, and the second base 32 is fixedly installed in the second mounting cavity 33; the second base 32 is provided with a second slot 322, and the second shaft end 122 is inserted into the second slot 322 to fix the connection between the oscillating brush head assembly 3 and the handle assembly 1.

[0092] Specifically, such as Figure 15As shown, the second mounting cavity 33 is a three-section cavity structure, including a first cavity 331, a second cavity 332, and a third cavity 333. When the oscillating brush head assembly 3 and the handle assembly 1 are installed, the first cavity 331 accommodates part of the structure of the handle assembly 1. The second cavity 332 is connected to the first cavity 331, and the inner diameter of the second cavity 332 is smaller than that of the first cavity 331. The second base 32 is installed in the second cavity 332. The first base 44 is provided with a second slot 322. After passing through the first cavity 331, the second shaft end 122 of the drive shaft 12 is inserted into the second slot 322 from the bottom of the second base 32. The second shaft end 122 is continuously inserted along the depth direction of the second slot 322 until the second shaft end 122 abuts against the bottom of the second slot 322. Through the tight connection between the second slot 322 and the second shaft end 122, the high-frequency vibration of the drive shaft 12 can be transmitted to the second base 32. The third cavity 333 is connected to the second cavity 332, and the inner diameter of the third cavity 333 is smaller than the inner diameter of the second cavity 332. A column 321 is provided on the top of the second base 32. When the second base 32 is installed in the second cavity 332, the column 321 is inserted into the third cavity 333 and fits tightly against the inner wall of the third cavity 333, which can further fix the connection between the second base 32 and the second brush handle 31.

[0093] In this embodiment, the second base 32 is driven to swing left and right by the drive shaft 12. The second base 32 is tightly connected to the inner wall of the second cavity 332 to control the left and right swing of the second brush handle 31. The high-frequency swing of the drive shaft 12 is transmitted to the second brush handle 31 through the second base 32, so that the bristles 5 on the second brush handle 31 vibrate at high frequency. The high-frequency vibrating bristles generate sound waves to clean the oral cavity. At the same time, the bristles will rub against the toothbrush during the high-frequency vibration, which can clean the stubborn stains and plaque fixed on the toothbrush surface and provide a cleaning effect.

[0094] In this embodiment, as Figure 15 As shown, an annular protrusion of a locking part 334 is provided on the outer wall of the second base 32, and an annular recess of a locking groove 323 is provided on the inner wall of the second mounting cavity 33. When the second base 32 is installed in the second mounting cavity 33, the locking part 334 is embedded in the locking groove 323 to fix the connection between the second base 32 and the second brush handle 31. This allows the power on the drive shaft 12 to be transmitted to the second brush handle 31 through the second base 32 when the drive shaft 12 swings left and right, thereby driving the brush on the second brush handle 31 to vibrate at high speed to generate sound waves to clean the oral cavity.

[0095] In this embodiment, as Figure 8 As shown, the handle assembly 1 further includes: a second silicone part 13, a pivot bracket 14, a mechanism bracket 15, a power supply 16, and a charging structure 17. Figure 16As shown, the charging structure 17 is located at the bottom of the handle housing 11, and a charging port is provided at the bottom. The power supply 16 is connected to the charging structure 17. The external power supply 16 is connected to the charging structure 17 through the charging port, and the current is connected to the power supply 16 through the charging structure 17, thereby charging the power supply 16 inside the electric toothbrush 100. The power supply 16 is connected to the drive component 21 and the PLC control board 24, and is used to provide current to the drive component 21 and control the rotation of the drive component 21 through the PLC control board 24.

[0096] like Figure 16 As shown, a switch button 18 and a gear adjustment button 19 are provided on the handle housing 11. The switch button controls the PLC control board 24 to turn the drive component 21 on and off, and the gear adjustment button 19 controls the rotation frequency of the drive component 21 on the PLC control board 24. Different gears correspond to different rotation frequencies. According to the user's cleaning needs, different gears can be selected and adjusted to control the brush head assembly to clean the oral cavity.

[0097] like Figure 17 As shown, the drive unit 21 and power supply 16 are installed inside the mechanism bracket 15, and the PLC control board 24 is installed on the outer wall of the mechanism bracket 15. This ensures a stable connection between the drive unit 21, power supply 16, and PLC control board 24, guaranteeing the normal operation of the circuit. Simultaneously, it prevents the drive unit 21 and power supply 16 from shaking inside the handle housing 11, which could affect the transmission connection with the drive shaft 12. The charging structure 17 is installed at the bottom of the mechanism bracket 15, and the rotating shaft bracket 14 is installed at the top of the mechanism bracket 15. The eccentric wheel 22 and movable kit 23 are located inside the rotating shaft bracket 14, separating them from the handle housing 11 and preventing them from colliding with the handle housing 11 during movement, thus affecting their direction of motion. Meanwhile, the drive shaft 12 enters the rotating shaft bracket 14 from the top and connects to the movable component 23, thus isolating the drive shaft 12 connected to the movable component 23 from the handle housing 11 and preventing the drive shaft 12 from colliding with the handle housing 11 during left and right deflection. Furthermore, when an external collision occurs, the internal deflection wheel, movable component 23, and drive shaft 12 are mounted inside and fixed to the rotating shaft bracket 14, improving structural stability and preventing changes in the connection relationship between the deflection wheel, movable component 23, and drive shaft 12 during a collision, thereby increasing the overall structural strength of the handle assembly 1.

[0098] like Figure 16As shown, the second silicone part 13 is hollow and sleeved on the upper end of the rotating shaft bracket 14. The drive shaft 12 passes through the second silicone part 13 and then enters the rotating shaft bracket 14 from the top and connects with the movable kit 23. The second silicone part 13 is disposed between the top of the rotating shaft bracket 14 and the inner wall of the handle housing 11, and the top of the second silicone part 13 abuts against the inner wall of the handle housing 11. When the drive component 21 rotates, the vibration between the eccentric wheel 22, the movable kit 23 and the drive shaft 12 will be transmitted to the rotating shaft bracket 14. When the vibration is transmitted to the second silicone part 13, the second silicone part 13, which has a certain elasticity, can weaken the vibration and reduce the vibration transmitted to the handle housing 11, thereby improving the user experience.

[0099] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0100] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention.

[0101] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0102] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0103] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electric toothbrush, characterized in that, The electric toothbrush includes: Handle assembly, including handle housing and drive shaft; A controller is located inside the handle housing and is connected to the first shaft end of the drive shaft inside the handle housing. It is used to control the drive shaft to swing left and right at a preset frequency. One of the oscillating brush head assembly and the rotating brush head assembly is connected to the second shaft end of the drive shaft and is used to operate under the drive of the drive shaft to clean the oral cavity; The rotating brush head assembly includes a swinging component connected to the second shaft end, which is used to control the swinging component to reciprocate by swinging the transmission shaft left and right, so as to control the rotating brush head assembly to clean the oral cavity.

2. The electric toothbrush according to claim 1, characterized in that, The rotating brush head assembly includes: a first brush handle and a brush component; The top of the first brush handle is provided with a mounting base, the brush is connected to the mounting base, and one end of the swing member passes through the bottom of the mounting base and connects to the bottom of the brush to drive the brush to rotate back and forth.

3. The electric toothbrush according to claim 2, characterized in that, The brush component includes a brush and a rotating component; the brush is mounted on a first end of the rotating component, and the second end of the rotating component is embedded in the mounting base. The oscillating member is connected to the bottom of the rotating member located within the mounting base to control the rotating member to reciprocate around its central axis.

4. The electric toothbrush according to claim 3, characterized in that, The end of the swing member connected to the rotating member is provided with an abutment rod, and the length direction of the abutment rod is perpendicular to the length direction of the swing member; A receiving groove is provided at the second end, and the abutting rod is placed in the receiving groove to fix the swinging member and the rotating member.

5. The electric toothbrush according to claim 3, characterized in that, The rotating brush head assembly further includes: a first base, a first mounting cavity is provided inside the first brush handle, and the first base is fixedly installed in the first mounting cavity; an opening of the first mounting cavity is provided at the bottom end of the first brush handle, a first slot is provided on the first base, and the second shaft end enters from the opening and is inserted into the first slot to fix the connection between the rotating brush head assembly and the handle assembly; The end of the first base away from the second shaft end is connected to the swing member, and the transmission shaft controls the swing member to reciprocate through the first base.

6. The electric toothbrush according to claim 5, characterized in that, The first base has a first protrusion and a second protrusion. The first protrusion abuts against the bottom of the mounting base, and the second protrusion is located below the first protrusion and spaced at a predetermined distance from the first protrusion. The end of the swing member away from the mounting base passes through the first protrusion and the second protrusion; the end of the swing member away from the rotating member is provided with an enlarged portion; the swing member is fitted with an elastic member, which is located between the enlarged portion and the second protrusion.

7. The electric toothbrush according to claim 5, characterized in that, The rotating brush head assembly also includes a fixing rod, one end of which is connected to the first base and the other end of which is fixedly connected to the mounting base.

8. The electric toothbrush according to claim 5, characterized in that, The rotating brush head assembly further includes a first silicone element disposed within the first mounting cavity, and the bottom of the first base abuts against the bottom of the first silicone element to fix the first base within the first mounting cavity.

9. The electric toothbrush according to claim 1, characterized in that, The oscillating brush head assembly includes a second brush handle and a second base; The second brush handle has a brush at one end and a second mounting cavity inside the other end, and the second base is fixedly installed in the second mounting cavity; The second base is provided with a second slot, and the second shaft end is inserted into the second slot to fix the connection between the oscillating brush head assembly and the handle assembly.

10. The electric toothbrush according to claim 1, characterized in that, The controller includes a drive component, an eccentric wheel, and a movable assembly. The movable assembly is connected to the drive component via the eccentric wheel. The drive component drives the eccentric wheel to rotate, controlling the movable assembly to deflect. The movable kit is connected to the first shaft end, and the movable kit is used to control the left and right swing of the drive shaft through the first shaft end.

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