Brush head mechanism of electric toothbrush and electric toothbrush

Abstract

The present invention is applicable to the technical field of electric toothbrushes, and provides an electric toothbrush head mechanism and an electric toothbrush, including a handle, a lever mechanism, and a power supply mechanism; the lever mechanism is arranged in the inner cavity of the handle, the power supply mechanism is arranged in the inner cavity of the handle, and the lever mechanism is located in front of the power supply mechanism; the lever mechanism includes a vibration motor. The brush head mechanism and the electric toothbrush of the electric toothbrush connect the front end of the connecting rod to the brush plate through a connecting clamp, and when the lever mechanism generates vibration, the brush plate is driven to move through the conduction of the connecting rod, and the brush head is driven to vibrate in an S shape through the connection guide of the vertical rod and the vertical tube, and finally an S-shaped brushing method (8-shaped brushing) is formed, which has a better brushing effect and improves the effect of cleaning dirt on teeth, and the vibration is directly transmitted to the brush plate to be brushed and cleaned by the bristles, thereby improving the experience of people when brushing their teeth.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric toothbrushes, and in particular relates to a brush head mechanism of an electric toothbrush and an electric toothbrush. Background Art

[0002] An electric toothbrush uses the rapid rotation or vibration of the electric motor to produce high-frequency vibrations in the brush head, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the mouth and have a massage effect on the gum tissue.

[0003] When brushing your teeth, on the one hand, the high-frequency oscillation of the brush head can efficiently complete the action of brushing your teeth. On the other hand, the vibration of more than 30,000 times per minute also causes the mixture of toothpaste and water in the mouth to produce a large number of tiny bubbles. The pressure generated when the bubbles burst can penetrate deep into the teeth to clean dirt.

[0004] Electric toothbrushes in the prior art generally use the motor and transmission parts in the toothbrush housing to drive the brush head to vibrate or rotate for brushing teeth, but the brush head is generally a whole. During brushing, the brush head is easy to contact with the teeth or the inner wall of the mouth, and it is easy to cause damage to the teeth and mouth when vibrating or rotating at a high frequency. As shown in Chinese patent CN202010337539.1, the technical solution disclosed in the patent is to set the brush head to move along the trajectory of the S-shaped track and the distance between the center of the L-shaped right-angle head to achieve forward and backward movement and twisting at the same time, thereby replacing the existing electric toothbrush for high-frequency and low-amplitude rotational motion or vibration. However, when using the above method, since the brush head only moves back and forth and twists, the amplitude and frequency of the movement of the bristles relative to the teeth are small, resulting in a generally poor cleaning effect. Summary of the invention

[0005] The present invention provides a brush head mechanism of an electric toothbrush and an electric toothbrush, aiming to provide an electric toothbrush with large brush head movement range, good cleaning effect, simple structure, no risk of damaging teeth and low noise.

[0006] The present invention is implemented as follows: a brush head mechanism of an electric toothbrush and an electric toothbrush, comprising a mounting rod, a brush head cover with an open top fixedly connected to the front end of the mounting rod;

[0007] A brush plate is detachably provided on the top of the brush head cover, bristles are provided on the upper surface of the brush plate, and a fixing block is fixedly connected to the bottom of the brush plate;

[0008] The bottom of the fixed block is vertically fixedly connected with a vertical rod, the bottom of the inner wall of the brush head cover is vertically fixedly connected with a vertical pipe, the vertical pipe cover is arranged outside the vertical rod, and a spring is vertically fixedly connected between the bottom of the fixed block and the bottom of the inner wall of the brush head cover;

[0009] The inner cavity of the brush head cover is provided with a connecting rod, the front end of the deflection lever is embedded in the rear end of the connecting rod, the rear side of the fixed block is provided with a connecting clamp adapted to the connecting rod, and the front end of the connecting rod is embedded in the interior of the connecting clamp.

[0010] Preferably, a connecting convex ring is provided at the bottom of the surface of the fixing block, and clamping convex blocks adapted to the connecting convex ring are fixedly connected to both sides of the inner wall of the brush head cover.

[0011] Preferably, the bristles are soft brushes or hard brushes.

[0012] Preferably, a hydrophobic port is provided at the bottom of the brush head cover.

[0013] Preferably, a limiting rod is transversely arranged on one side of the brush head cover, the inner end of the limiting rod extends to the inner cavity of the brush head cover, and a limiting groove matched with the limiting rod is provided on the side of the fixing block.

[0014] An electric toothbrush, comprising the above-mentioned brush head mechanism and handle, lever mechanism, and power supply mechanism;

[0015] The lever mechanism is disposed in the inner cavity of the handle, the power supply mechanism is disposed in the inner cavity of the handle, and the lever mechanism is located in front of the power supply mechanism;

[0016] The lever mechanism includes a vibration motor, the output shaft of the vibration motor is provided with a deflection lever, the front end of the handle is fixedly connected to a mounting rod, the front end of the mounting rod is fixedly connected to a brush head cover with an open top, the inner cavity of the mounting rod is provided with an accommodating channel, and the front end of the deflection lever extends to the inner cavity of the brush head cover through the inner cavity of the accommodating channel.

[0017] Preferably, the power supply mechanism includes a connecting shell, the connecting shell is arranged at the top of the inner cavity of the handle, a battery is arranged inside the connecting shell, and the battery is electrically connected to the vibration motor.

[0018] Preferably, a wireless charging coil is provided at the rear end of the handle, and the wireless charging coil is electrically connected to the battery.

[0019] Preferably, a clamping head is fixedly connected to the front end of the deflection lever, a clamping slot matching the clamping head is formed on the rear side surface of the connecting rod, and the clamping head is embedded in the inside of the clamping slot.

[0020] Preferably, a switch button is provided on the handle, a control circuit board is provided in the inner cavity of the handle, a sealing ring is provided on the front end fixing sleeve of the surface of the connecting shell, and the surface of the sealing ring contacts the front end of the inner wall of the handle.

[0021] Beneficial Effects

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the brush head mechanism of an electric toothbrush and the electric toothbrush of the present invention connect the front end of the connecting rod to the brush plate through a connecting clamp, and when the lever mechanism generates vibration, the vibration is transmitted through the connecting rod to drive the brush plate to move, so that during the vibration process, the two ends of the brush plate are driven to twist back and forth around the vertical rod as the axis under the guiding action of the connection between the vertical rod and the vertical tube, and finally an S-shaped brushing method (8-shaped brushing method) is formed, which has a better brushing effect and improves the effect of cleaning dirt on teeth, and by The vibration is directly transmitted to the brush plate for brushing and cleaning. During brushing, the brush head cover and the mounting rod will not vibrate and move along with the brush plate, and the vibration is controlled on the brush plate. The mounting rod and the brush head cover cannot sense the vibration, which solves the damage to teeth caused by the vibration of the traditional brush head and brush cover. Unlike the traditional brush head, the overall vibration will not rub other parts of the oral cavity, which improves the experience of people when brushing. At the same time, only the brushing of the bristles touches the teeth, reducing useless uncomfortable vibrations and reducing the battery energy consumed, making the toothbrush more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural explosion diagram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the brush plate and the fixing block in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the brush plate and the bristles in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the mounting rod and the vertical pipe in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the mounting rod and the accommodating channel in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the connecting rod and the card slot in the present invention;

[0029] Figure 7 Schematic diagram of the motion path trajectory of the present invention.

[0030] In the figure: 1. handle, 2. vibration motor, 3. deflection lever, 4. clamping head, 5. mounting rod, 6. accommodating channel, 7. brush head cover, 8. clamping protrusion, 9. switch button, 10. brush plate, 11. bristles, 12. fixing block, 13. connecting rod, 14. clamping groove, 15. connecting convex ring, 16. spring, 17. connecting clamp, 18. vertical rod, 19. vertical tube, 20. limiting rod, 21. limiting groove, 22. battery, 23. wireless charging coil, 24. control circuit board, 25. connecting shell, 26. sealing ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] See also Figure 1-7 The present invention provides a technical solution: a brush head mechanism of an electric toothbrush, comprising a mounting rod 5, the front end of which is fixedly connected to a brush head cover 7 with an open top;

[0033] An electric toothbrush comprises a brush head mechanism and a handle 1, a lever mechanism, and a power supply mechanism;

[0034] The lever mechanism is arranged in the inner cavity of the handle 1, the power supply mechanism is arranged in the inner cavity of the handle 1, and the lever mechanism is located in front of the power supply mechanism;

[0035] The lever mechanism includes a vibration motor 2, the output shaft of the vibration motor 2 is provided with a deflection lever 3, the inner cavity of the mounting rod 5 is provided with a receiving channel 6, and the front end of the deflection lever 3 extends through the inner cavity of the receiving channel 6 to the inner cavity of the brush head cover 7;

[0036] When the vibration motor 2 vibrates, it drives the deflection lever 3 to vibrate together. The diameter of the accommodating channel 6 is larger than the diameter of the deflection lever 3 , thereby providing a vibration space for the deflection lever 3 .

[0037] A brush plate 10 is detachably provided on the top of the brush head cover 7, bristles 11 are provided on the upper surface of the brush plate 10, and a fixing block 12 is fixedly connected to the bottom of the brush plate 10;

[0038] The brush plate 10, the bristles 11 and the brush head cover 7 form a complete toothbrush head for use.

[0039] The bottom of the fixed block 12 is vertically fixedly connected with a vertical rod 18, the bottom of the inner wall of the brush head cover 7 is vertically fixedly connected with a vertical pipe 19, the vertical pipe 19 is covered on the outside of the vertical rod 18, and a spring 16 is vertically fixedly connected between the bottom of the fixed block 12 and the bottom of the inner wall of the brush head cover 7;

[0040] When the brush plate 10 is moving, the fixed block 12 drives the spring 16 to deform and generate elastic force. After the spring 16 is deformed and generates elastic force, it reacts to the brush plate 10 through the fixed block 12. After the force exerted on the brush plate 10 disappears, the elastic force of the spring 16 drives the brush plate 10 to return to its original position.

[0041] A connecting rod 13 is provided in the inner cavity of the brush head cover 7, the front end of the deflection lever 3 is embedded in the rear end of the connecting rod 13, and a connecting clamp 17 adapted to the connecting rod 13 is provided on the rear side of the fixing block 12, and the front end of the connecting rod 13 is embedded in the interior of the connecting clamp 17.

[0042] The front end of the connecting rod 13 is connected to the brush plate 10 through the connecting clamp 17. When the lever mechanism generates vibration, the vibration is transmitted through the connecting rod 13, driving the brush plate 10 to move. During the vibration process, the brush plate 10 is guided by the connection between the vertical tube 18 and the vertical rod 19, driving the two ends of the brush plate 10 to twist back and forth around the vertical tube 18 as the axis, finally forming an S-shaped brushing (8-shaped brushing) method with a larger movement range and a better brushing effect, thereby improving the effect of cleaning dirt from teeth.

[0043] In addition, the vibration is directly transmitted to the brush plate 10 for brushing and cleaning through the bristles 11. During brushing, the brush head cover 7 and the mounting rod 5 will not vibrate and move together with the brush plate 10. The vibration is controlled on the brush plate 10, and the mounting rod 5 and the brush head cover 7 cannot sense the vibration. The teeth will not be knocked when the brush head cover 7 vibrates at a high frequency, thereby avoiding damage to the teeth. The safety is better, and the damage to the teeth caused by the vibration of the traditional brush head and brush cover together is solved. The noise is also smaller, which improves the experience of people when brushing their teeth.

[0044] During the process of brushing teeth, even if the brush head cover 7 touches the teeth, it is only a slight touch. Without high-frequency vibration or rotation, the damage to the teeth is relatively small.

[0045] Furthermore, a connecting protruding ring 15 is provided at the bottom of the surface of the fixing block 12 , and both sides of the inner wall of the brush head cover 7 are fixedly connected with snap-fitting protruding blocks 8 that are matched with the connecting protruding ring 15 .

[0046] In this embodiment, the connecting protrusion 15 is located below the snap-fitting protrusion 8 , and the brush plate 10 is fixed above the brush head cover 7 by the interference between the connecting protrusion 15 and the snap-fitting protrusion 8 .

[0047] Furthermore, the power supply mechanism includes a connecting shell 25 , which is disposed at the top of the inner cavity of the handle 1 , and a battery 22 is disposed inside the connecting shell 25 , and the battery 22 is electrically connected to the vibration motor 2 .

[0048] In this embodiment, the battery 22 provides power for the vibration motor 2 when it is working, and the connecting shell 25 is used to position and install the battery 22 when it is in use, thereby improving the stability of the battery 22 when it is in use.

[0049] Furthermore, a wireless charging coil 23 is provided at the rear end of the handle 1 , and the wireless charging coil 23 is electrically connected to the battery 22 .

[0050] In this embodiment, the wireless charging coil 23 is a prior art and will not be described in detail herein. The wireless charging coil 23 is provided to facilitate wireless charging of the battery 22 to replenish the power consumed by the battery 22 when the deflection lever 3 is working.

[0051] Furthermore, a clamping head 4 is fixedly connected to the front end of the deflection lever 3 , and a clamping groove 14 adapted to the clamping head 4 is formed on the rear side of the connecting rod 13 , and the clamping head 4 is clamped and embedded in the clamping groove 14 .

[0052] In this embodiment, the connecting rod 13 can be embedded in the front end of the deflection lever 3 by inserting the clamping head 4 into the interior of the clamping slot 14. When the vibration motor 2 drives the deflection lever 3 to vibrate, the vibration is transmitted to the connecting rod 13, causing the connecting rod 13 to vibrate. During the vibration process, the connecting rod 13 transmits the vibration through the fixed block 12, thereby driving the brush plate 10 to vibrate and start to move.

[0053] Furthermore, a switch button 9 is provided on the handle 1 , and a control circuit board 24 is provided in the inner cavity of the handle 1 .

[0054] In this embodiment, the control circuit board 24 is a prior art and will not be described in detail herein. The operation of the vibration motor 2 can be controlled manually by pressing the switch button 9 and adjusting the control circuit board 24 .

[0055] Furthermore, a sealing ring 26 is provided at the front end fixed sleeve of the surface of the connecting shell 25 , and the surface of the sealing ring 26 contacts the front end of the inner wall of the handle 1 .

[0056] In this embodiment, the sealing ring 26 blocks the water flow entering the inner cavity of the mounting rod 5, thereby preventing the water flow from entering the inner cavity of the handle 1, thereby improving the protection of components such as the vibration motor 2, the battery 22 and the wireless charging coil 23, and extending the service life of the electronic components.

[0057] Furthermore, a limiting rod 20 is transversely disposed on one side of the brush head cover 7 , the inner end of the limiting rod 20 extends to the inner cavity of the brush head cover 7 , and a limiting groove 21 adapted to the limiting rod 20 is provided on the side of the fixing block 12 .

[0058] In this embodiment, after the brush plate 10 is installed on the top of the inner cavity of the brush head cover 7, the limiting rod 20 is inserted into the limiting groove 21 to limit the brush plate 10 when it vibrates and moves, so as to avoid the brush plate 10 from moving too much.

[0059] Furthermore, the bristles 11 are soft brushes or hard brushes.

[0060] In this embodiment, during the production of the toothbrush, the bristles 11 can be changed to soft bristles or hard bristles according to production requirements.

[0061] Furthermore, a water-repellent port is provided at the bottom of the brush head cover 7 .

[0062] In this embodiment, the drain port is convenient for discharging the water flow entering the inner cavity of the brush plate 10, thereby improving the stability of the toothbrush during operation.

[0063] The working principle and use process of the present invention: After the present invention is installed, when the lever mechanism generates vibration, it is transmitted through the connecting rod 13 to drive the brush plate 10 to move, so that during the vibration process, the brush plate 10 drives the two ends of the brush plate 10 to twist back and forth around the vertical tube 18 as the axis under the connection and guidance of the vertical tube 18 and the vertical rod 19, and finally forms an S-shaped brushing method, which has a better brushing effect, and the vibration is directly transmitted to the brush plate 10 for brushing and cleaning through the bristles 11. During the brushing process, the brush head cover 7 and the mounting rod 5 will not vibrate and move together with the brush plate 10, and the vibration is controlled on the brush plate 10. The mounting rod 5 and the brush head cover 7 cannot sense the vibration, thereby solving the damage to teeth caused by the vibration of the traditional brush head and brush cover together and improving the experience of people when brushing their teeth.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brush head mechanism of an electric toothbrush, characterized in that: It comprises a mounting rod (5), the front end of which is fixedly connected to a brush head cover (7) with an open top; A brush plate (10) is detachably provided on the top of the brush head cover (7), bristles (11) are provided on the upper surface of the brush plate (10), and a fixing block (12) is fixedly connected to the bottom of the brush plate (10); The bottom of the fixed block (12) is vertically fixedly connected to a vertical rod (18), the bottom of the inner wall of the brush head cover (7) is vertically fixedly connected to a vertical tube (19), the vertical tube (19) is arranged outside the vertical rod (18), and a spring (16) is vertically fixedly connected between the bottom of the fixed block (12) and the bottom of the inner wall of the brush head cover (7); The inner cavity of the brush head cover (7) is provided with a connecting rod (13), the front end of the deflection lever (3) is clamped in the rear end of the connecting rod (13), the rear side surface of the fixing block (12) is provided with a connecting clamp (17) adapted to the connecting rod (13), and the front end of the connecting rod (13) is clamped in the interior of the connecting clamp (17); A connecting convex ring (15) is provided at the bottom of the surface of the fixing block (12), and clamping convex blocks (8) adapted to the connecting convex ring (15) are fixedly connected to both sides of the inner wall of the brush head cover (7); A limiting rod (20) is disposed transversely on one side of the brush head cover (7), the inner end of the limiting rod (20) extends to the inner cavity of the brush head cover (7), and a limiting groove (21) adapted to the limiting rod (20) is disposed on the side of the fixing block (12).

2. The brush head mechanism of an electric toothbrush according to claim 1, characterized in that: The bristles (11) are soft bristle brushes or hard bristle brushes.

3. The brush head mechanism of an electric toothbrush according to claim 1, characterized in that: The bottom of the brush head cover (7) is provided with a water-repellent opening.

4. An electric toothbrush, characterized in that: The electric toothbrush comprises a brush head mechanism and a handle (1), a lever mechanism, and a power supply mechanism as described in any one of claims 1 to 3; The lever mechanism is arranged in the inner cavity of the handle (1), the power supply mechanism is arranged in the inner cavity of the handle (1), and the lever mechanism is located at the front side of the power supply mechanism; The lever mechanism comprises a vibration motor (2), the output shaft of the vibration motor (2) is provided with a deflection lever (3), the front end of the handle (1) is fixedly connected to a mounting rod (5), the front end of the mounting rod (5) is fixedly connected to a brush head cover (7) with an open top, the inner cavity of the mounting rod (5) is provided with a receiving channel (6), and the front end of the deflection lever (3) extends through the inner cavity of the receiving channel (6) to the inner cavity of the brush head cover (7); The front end of the deflection lever (3) is fixedly connected to a clamping head (4); the rear side surface of the connecting rod (13) is provided with a clamping groove (14) adapted to the clamping head (4); the clamping head (4) is clamped in the interior of the clamping groove (14); The handle (1) is provided with a switch button (9), the inner cavity of the handle (1) is provided with a control circuit board (24), and a front end fixing sleeve on the surface of the connection shell (25) is provided with a sealing ring (26), and the surface of the sealing ring (26) is in contact with the front end of the inner wall of the handle (1).

5. An electric toothbrush according to claim 4, characterized in that: The power supply mechanism comprises a connection shell (25), the connection shell (25) being arranged at the top of the inner cavity of the handle (1), a battery (22) being arranged inside the connection shell (25), and the battery (22) being electrically connected to the vibration motor (2).

6. An electric toothbrush according to claim 5, characterized in that: A wireless charging coil (23) is provided at the rear end of the handle (1), and the wireless charging coil (23) is electrically connected to the battery (22).

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