Disassembling and assembling structure of electric toothbrush head and machine body

Abstract

The utility model relates to the technical field of toothbrushes, and particularly discloses an electric toothbrush head and machine body dismounting structure which comprises a brush head part, a mounting seat arranged in the brush head part and a main machine handle, the main machine handle comprises a main body part and a transmission shaft installed on the main body part, a connecting piece matched with the installation base is arranged on the transmission shaft, and the brush head piece is detachably installed on the connecting piece of the transmission shaft of the main machine handle through the installation base. The connecting piece on the transmission shaft is matched with the mounting seat in the brush head piece, so that the brush head piece and the main machine handle are conveniently disassembled and assembled, a user can easily replace the brush head, and the use convenience of the product is improved.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, and in particular discloses a disassembly and assembly structure for an electric toothbrush head and body. Background Technology

[0002] With the improvement of living standards and the enhancement of oral health awareness, electric toothbrushes have gradually become the preferred tool for daily oral care due to their efficient and convenient cleaning effect. An electric toothbrush typically consists of two parts: the brush head and the body. The brush head is responsible for direct contact with teeth for cleaning, while the body contains key components such as the drive motor, which provides power to the brush head.

[0003] Prior art document CN205198179U discloses a toothbrush head with a protruding drive mounting shaft at the top of the main handle and a mounting groove with an annular recess around the shaft. An elastic arm is provided on the inner wall of the toothbrush head. This elastic arm can extend and retract radially towards the center when subjected to external forces, with the mounting shaft as the center. A locking protrusion on the elastic arm, when engaging with the mounting groove, prevents the brush head from detaching from the main handle. While the detachment structure of the brush head and main handle in this prior art document is convenient for installation, it is difficult to remove during disassembly. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a disassembly and assembly structure for an electric toothbrush head and body.

[0005] To achieve the above objectives, this utility model provides a disassembly and assembly structure for an electric toothbrush head and body, comprising a brush head component, a mounting base disposed within the brush head component, and a main handle; the main handle includes a main body and a drive shaft mounted on the main body, the drive shaft being provided with a connector that mates with the mounting base, and the brush head component being detachably mounted on the connector of the drive shaft of the main handle via the mounting base.

[0006] The connection between the drive shaft and the mounting base inside the brush head assembly allows for easy disassembly and installation between the brush head assembly and the main unit handle. This enables users to easily replace the brush head, improving the product's ease of use. The connection between the connector and the mounting base ensures the stability of the brush head assembly during use, preventing it from loosening and guaranteeing a secure installation and reliable operation. This enhances the safety and durability of the equipment.

[0007] The connector protrudes from the outer side of the drive shaft and has a snap-fit ​​groove. The snap-fit ​​groove is recessed from the side wall of the connector. The mounting base has two sets of elastic clamping arms for clamping the connector. The elastic clamping arms have limiting protrusions that extend into the snap-fit ​​groove.

[0008] The presence of the limiting protrusion within the snap-fit ​​groove effectively prevents the brush head from accidentally detaching during normal use, ensuring that the brush head can only be disassembled when intentionally operated by the user, thus increasing safety. The contact between the limiting protrusion and the snap-fit ​​groove, facilitated by the flexible design of the elastic clamping arm, reduces friction during disassembly, minimizes wear on the connection points, and extends the service life of the mounting base, connector, and snap-fit ​​groove. The curved structure of the limiting protrusion provides a smoother contact when engaging with the snap-fit ​​groove, reducing jamming. When the brush head needs to be disassembled, the curved protrusion is easier to compress or push, releasing the connection. The engagement between the snap-fit ​​groove and the limiting protrusion prevents the brush head from rotating clockwise or counterclockwise when mounted on the drive shaft.

[0009] The upper and lower edges of the buckle groove are respectively provided with a first rounded corner to facilitate the movement of the limiting protrusion into and out of the buckle groove. The top and bottom of the connector are respectively provided with a second rounded corner to facilitate the movement of the connector between the two sets of elastic clamping arms.

[0010] The snap-fit ​​groove design ensures a secure fit between the connector and the mounting base, preventing loosening or instability during disassembly and ensuring the brush head remains stable throughout use. The snap-fit ​​groove has first rounded corners at both ends, and the connector has second rounded corners at the top and bottom. This effectively reduces wear caused by friction during disassembly and use, extending the lifespan of both the connector and the mounting base. When assembling or replacing the brush head, the rounded corners facilitate smoother insertion and removal of the brush head from the drive shaft.

[0011] The mounting base includes a main body and a conical mounting shell on the main body. The main body is sleeved around the outside of the drive shaft. Two sets of elastic clamping arms are set on the main body and / or the conical mounting shell. The outer conical surface of the conical mounting shell fits against the inner conical hole side of the brush head, and the inner cylindrical hole side of the conical mounting shell fits against the outer cylindrical side of the drive shaft.

[0012] The drive shaft includes a first connecting part disposed on the main body and a second connecting part at the end away from the main body. The outer diameter of the drive shaft continuously decreases from the first connecting part to the second connecting part.

[0013] The design of the drive shaft with its outer diameter gradually decreasing from the first connecting part to the second connecting part ensures a tighter and more stable connection between the brush head and the main unit handle. As the outer diameter gradually decreases, the drive shaft can better fit the tapered mounting shell, avoiding loosening or instability at the connection point, thereby greatly improving the strength of the connection.

[0014] The contact between the inner cylindrical bore and the drive shaft provides a more efficient sealing effect. The gradually decreasing outer diameter of the drive shaft can precisely match the inner cylindrical bore, forming a good sealing area that effectively prevents external substances such as moisture, dust, and dirt from entering, thereby avoiding damage to the internal components of the electric toothbrush and improving the product's waterproof and dustproof capabilities.

[0015] Multiple sets of radial bosses are radially spaced on the inner wall of the mounting base. These radial bosses abut against the side wall of the drive shaft. There can be five sets of radial bosses: two sets are respectively located on the inner side walls of the two sets of elastic clamping arms, and three sets are spaced apart on the inner side wall of the conical mounting shell. The radial bosses reduce the contact area between the inner wall of the brush head and the drive shaft, ensuring support and limiting while facilitating their detachment. They also ensure an airflow channel is formed between the inner wall of the brush head and the drive shaft, preventing a vacuum from hindering separation.

[0016] The mounting base is provided with multiple sets of limiting grooves. The brush head includes a brush head rod and a bristle part installed on the brush head rod. Multiple sets of limiting blocks are provided on the inner side wall of the brush head rod. The mounting base is engaged with the limiting blocks of the brush head rod through the limiting grooves to prevent the mounting base from falling off the inside of the brush head during the insertion and removal process.

[0017] The disassembly and assembly structure also includes a vibration component installed in the main body. The vibration component is used to vibrate the brush head to clean the teeth. The vibration component includes a drive component and a control board assembly. The control board assembly is electrically connected to the drive component, and the transmission shaft is installed on the output shaft of the drive component.

[0018] The drive shaft, connected to the output shaft of the drive unit, ensures stable power transmission to the vibration assembly. The drive shaft's design allows the drive unit's output shaft to continuously and stably drive the brush head to vibrate without jamming or uneven power transmission. This stable drive system makes using the electric toothbrush smoother and more reliable.

[0019] The disassembly and assembly structure also includes a mounting bracket and a seal. The mounting bracket is clamped between the seal and the drive body. The drive shaft passes through the seal and protrudes from the main body. The seal is used to seal the gap between the drive shaft and the main body. The drive shaft has a sealing groove in the middle and a sealing protrusion on the inner side wall of the seal. The drive shaft is installed by engaging the sealing groove with the sealing protrusion of the seal.

[0020] The seal, through its engagement with the sealing groove and sealing protrusion in the center of the drive shaft, forms a strong and effective seal. This design effectively prevents moisture, dust, or other external contaminants from entering the electric toothbrush, avoiding damage to internal electrical components or the drive system. The sealing effect provided by the seal ensures the product's durability and protection, extending the electric toothbrush's lifespan.

[0021] The disassembly and assembly structure also includes a light-emitting component installed on the main body. The drive shaft includes a first bracket and a light-transmitting cover injection molded on the first bracket. The light-transmitting cover covers the outside of the light-emitting component. The end of the light-transmitting cover away from the first bracket is provided with a mold hole. The light-transmitting cover is detachably connected to a sealing member for sealing the mold hole. The bristles are made of light-transmitting material. The light emitted by the light-emitting component is emitted through the bristles to perform phototherapy on the teeth and oral cavity.

[0022] The design of the light-emitting components and light-transmitting bristles enables phototherapy, allowing the emitted light waves to treat teeth and the oral cavity. Phototherapy can promote gum health, reduce plaque formation, inhibit bacteria in the mouth, improve oral hygiene, and prevent oral diseases such as gingivitis or oral ulcers.

[0023] The beneficial effects of this utility model are as follows: The disassembly and assembly structure design of this utility model, through the cooperation of the drive shaft, mounting base, and connecting parts, realizes convenient disassembly and assembly of the electric toothbrush head and the body. The design of the connecting parts and mounting base enhances the stability of the brush head, prevents loosening, and ensures safety during use. The cooperation of the snap-fit ​​groove and the limiting protrusion prevents the brush head from accidentally falling off and reduces friction and wear during disassembly, thereby extending the service life of the components. At the same time, the design of the gradually decreasing outer diameter of the drive shaft and the cooperation of the inner cylindrical hole side not only ensures a more secure connection but also improves the sealing effect, preventing moisture and dust from entering and enhancing waterproof and dustproof capabilities. In addition, the design of the light-emitting component and the light-transmitting bristles provides an oral phototherapy function, which can promote gum health, whiten teeth, and improve oral cleaning, providing users with more comprehensive oral care. The overall design improves the convenience, safety, durability, and multifunctionality of the electric toothbrush. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is an exploded view of the entire utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the transmission shaft of this utility model;

[0027] Figure 4 For the present utility model Figure 3 An enlarged view of part A;

[0028] Figure 5 This is a schematic diagram of the mounting base of this utility model;

[0029] Figure 6 This is a schematic diagram of the mounting base of this utility model from another perspective.

[0030] Figure 7 This is a cross-sectional view of the sealing element of this utility model;

[0031] Figure 8 This is a structural schematic diagram of the brush head component of this utility model;

[0032] Figure 9 This is an exploded view of the drive shaft and light-emitting component of this utility model.

[0033] The reference numerals in the figures include:

[0034] 1. Brush head; 2. Mounting base; 3. Main unit handle; 4. Main body; 5. Drive shaft; 6. Connector; 7. Snap-fit ​​groove; 8. First rounded corner; 9. Second rounded corner; 11. Body; 12. Conical mounting shell; 13. Elastic clamping arm; 14. Limiting protrusion; 15. First connecting part; 16. Second connecting part; 17. Radial boss; 18. Side of inner cylindrical hole; 19. Limiting groove; 21. Brush head rod; 22. Brush bristle part; 23. Limiting block; 24. Vibration assembly; 25. Drive component; 26. Control board assembly; 27. Output shaft; 28. Mounting bracket; 29. ​​Seal; 31. Sealing groove; 32. Sealing protrusion; 33. Light-emitting component; 34. First bracket; 35. Light-transmitting cover; 36. Demolding hole; 37. Sealing component. Detailed Implementation

[0035] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0036] Please see Figures 1 to 9 As shown, the present invention provides a disassembly and assembly structure for an electric toothbrush head and body, including a brush head component 1, a mounting base 2 disposed within the brush head component 1, and a main handle 3; the main handle 3 includes a main body 4 and a drive shaft 5 mounted on the main body 4, the drive shaft 5 being provided with a connector 6 that cooperates with the mounting base 2, and the brush head component 1 being detachably mounted on the connector 6 of the drive shaft 5 of the main handle 3 via the mounting base 2.

[0037] The connection 6 on the drive shaft 5 engages with the mounting base 2 inside the brush head component 1, enabling convenient disassembly and installation between the brush head component 1 and the main unit handle 3. This allows users to easily replace the brush head, improving the product's ease of use. The engagement between the connection 6 and the mounting base 2 ensures the stability of the brush head component 1 during use, preventing it from loosening and ensuring secure installation and reliable operation, thus enhancing the safety and durability of the equipment.

[0038] The connector 6 protrudes from the outer side of the drive shaft 5. The connector 6 is provided with a snap-fit ​​groove 7, which is recessed from the side wall of the connector 6. The mounting base 2 has two sets of elastic clamping arms 13 for clamping the connector 6. The elastic clamping arms 13 are provided with limiting protrusions 14 that protrude into the snap-fit ​​groove 7.

[0039] The presence of the limiting protrusion 14 within the snap-fit ​​groove 7 effectively prevents the brush head from accidentally falling off during normal use, ensuring that the brush head component 1 can only be disassembled when intentionally operated by the user, thus increasing safety. The contact between the limiting protrusion 14 and the snap-fit ​​groove 7, facilitated by the flexible design of the elastic clamping arm 13, reduces friction during disassembly, minimizes wear on the connecting parts, and extends the service life of the mounting base 2, connector 6, and snap-fit ​​groove 7. The limiting protrusion 14 has an arc-shaped structure, which provides smoother contact when engaging with the snap-fit ​​groove 7, reducing jamming. When the brush head needs to be disassembled, the arc-shaped protrusion is more easily compressed or pushed, releasing the connection. The engagement of the snap-fit ​​groove 7 with the limiting protrusion 14 prevents the brush head component 1 from rotating clockwise or counterclockwise when mounted on the drive shaft 5.

[0040] The upper and lower edges of the buckle groove 7 are respectively provided with first rounded corners 8 to facilitate the movement of the limiting protrusion 14 into and out of the buckle groove 7. The top and bottom ends of the connector 6 are respectively provided with second rounded corners 9 to facilitate the movement of the connector 6 between the two sets of elastic clamping arms 13.

[0041] The snap-fit ​​groove 7 design allows the connector 6 to securely engage with the mounting base 2, preventing loosening or instability during disassembly and ensuring the brush head 1 remains stable during use. The snap-fit ​​groove 7 has first rounded corners 8 at its upper and lower edges, and second rounded corners 9 at the top and bottom of the connector 6. These effectively reduce wear caused by friction during disassembly and use, thus extending the service life of the connector 6 and the mounting base 2. When assembling or replacing the brush head, the rounded corner design makes the assembly and disassembly of the brush head 1 with the drive shaft 5 smoother.

[0042] The mounting base 2 includes a body 11 and a conical mounting shell 12 on the body 11. The body 11 is sleeved around the outside of the drive shaft 5. Two sets of elastic clamping arms 13 are arranged on the body 11 and / or the conical mounting shell 12. The outer conical surface of the conical mounting shell 12 fits against the inner conical hole side of the brush head 1, and the inner cylindrical hole side 18 of the conical mounting shell 12 fits against the outer cylindrical side of the drive shaft 5.

[0043] The drive shaft 5 includes a first connecting part 15 disposed on the main body 4, and a second connecting part 16 at the end away from the main body 4. The outer diameter of the drive shaft 5 continuously decreases from the first connecting part 15 to the second connecting part 16.

[0044] The design of the drive shaft 5, with its outer diameter gradually decreasing from the first connecting part 15 to the second connecting part 16, ensures a tighter and more stable connection between the brush head 1 and the main handle 3. As the outer diameter gradually decreases, the drive shaft 5 can better fit the tapered mounting shell 12, preventing loosening or instability at the connection points, thereby greatly improving the strength of the connection.

[0045] The contact between the inner cylindrical hole side 18 and the drive shaft 5 provides a more efficient sealing effect. The gradually decreasing outer diameter of the drive shaft 5 can precisely match the inner cylindrical hole side 18 to form a good sealing area, effectively preventing the entry of external substances such as moisture, dust, and dirt, thereby avoiding damage to the internal components of the electric toothbrush and improving the product's waterproof and dustproof capabilities.

[0046] Multiple sets of radial bosses 17 are radially spaced on the inner wall of the mounting base 2. The radial bosses 17 are used to abut against the side wall of the drive shaft 5. There can be five sets of radial bosses 17. Two sets of radial bosses 17 are respectively set on the inner side wall of the two sets of elastic clamping arms 13, and three sets of radial bosses 17 are respectively spaced on the inner side wall of the conical mounting shell 12. The radial bosses 17 reduce the contact area between the inner wall surface of the brush head 1 and the drive shaft 5. While ensuring support and limiting, it is more conducive to the detachment of the two. It can also ensure that an air flow channel is formed between the inner wall surface of the brush head 1 and the drive shaft 5, avoiding the formation of a vacuum that would affect the separation of the two.

[0047] The mounting base 2 is provided with multiple sets of limiting grooves 19. The brush head component 1 includes a brush head rod 21 and a bristle part 22 installed on the brush head rod 21. Multiple sets of limiting blocks 23 are provided on the inner side wall of the brush head rod 21. The mounting base 2 is engaged with the limiting blocks 23 of the brush head rod 21 through the limiting grooves 19 to prevent the mounting base 2 from falling off the inside of the brush head component 1 during the insertion and removal process.

[0048] The disassembly and assembly structure also includes a vibration component 24 disposed in the main body 4. The vibration component 24 is used to vibrate the brush head 1 to clean the teeth. The vibration component 24 includes a drive component 25 and a control board assembly 26. The control board assembly 26 is electrically connected to the drive component 25, and the transmission shaft 5 is disposed on the output shaft 27 of the drive component 25.

[0049] The drive shaft 5, connected to the output shaft 27 of the drive unit 25, ensures stable power transmission to the vibration assembly 24. The design of the drive shaft 5 allows the output shaft 27 of the drive unit 25 to continuously and stably drive the brush head 1 to vibrate without jamming or uneven power transmission. This stable drive system makes the use of the electric toothbrush smoother and more reliable.

[0050] The disassembly and assembly structure also includes a mounting bracket 28 and a seal 29. The mounting bracket 28 is clamped between the seal 29 and the body of the drive component 25. The drive shaft 5 passes through the seal 29 and protrudes from the main body 4. The seal 29 is used to seal the gap between the drive shaft 5 and the main body 4. The drive shaft 5 has a sealing groove 31 in the middle. The inner side wall of the seal 29 has a sealing protrusion 32. The drive shaft 5 is installed by engaging with the sealing protrusion 32 of the seal 29 via the sealing groove 31.

[0051] The seal 29, through its engagement with the sealing groove 31 and sealing protrusion 32 in the middle of the drive shaft 5, forms a strong and effective seal. This design effectively prevents moisture, dust, or other external contaminants from entering the interior of the electric toothbrush, avoiding damage to internal electrical components or the drive system. The sealing effect provided by the seal 29 ensures the durability and protection of the product, extending the lifespan of the electric toothbrush.

[0052] The disassembly and assembly structure also includes a light-emitting component 33 installed on the main body 4. The drive shaft 5 includes a first bracket 34 and a light-transmitting cover 35 injection molded on the first bracket 34. The light-transmitting cover 35 covers the outside of the light-emitting component 33. The end of the light-transmitting cover 35 away from the first bracket 34 is provided with a mold hole 36. The light-transmitting cover 35 is detachably connected to a sealing member 37 for sealing the mold hole 36. The bristle part 22 is made of light-transmitting material. The light emitted by the light-emitting component 33 is emitted through the bristle part 22 to perform phototherapy on the teeth and oral cavity.

[0053] The light-emitting component 33 and the bristle design of the light-transmitting material enable phototherapy, allowing the emitted light waves to treat teeth and the oral cavity. Phototherapy can promote gum health, reduce plaque formation, inhibit bacteria in the oral cavity, improve oral hygiene, and prevent oral diseases such as gingivitis or oral ulcers.

[0054] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A detachable structure for an electric toothbrush head and body, characterized in that: The device includes a brush head (1), a mounting base (2) disposed within the brush head (1), and a main handle (3); the main handle (3) includes a main body (4) and a drive shaft (5) mounted on the main body (4). The drive shaft (5) is provided with a connector (6) that cooperates with the mounting base (2). The brush head (1) is detachably mounted on the connector (6) of the drive shaft (5) of the main handle (3) via the mounting base (2).

2. The detachable structure for an electric toothbrush head and body according to claim 1, characterized in that: The connector (6) protrudes from the outer side of the drive shaft (5). The connector (6) is provided with a snap-fit ​​groove (7), which is recessed from the side wall of the connector (6). The mounting base (2) has two sets of elastic clamping arms (13) for clamping the connector (6). The elastic clamping arms (13) are provided with limiting protrusions (14) that protrude into the snap-fit ​​groove (7).

3. The detachable structure for an electric toothbrush head and body according to claim 2, characterized in that: The upper and lower edges of the buckle groove (7) are respectively provided with first rounded corners (8) to facilitate the movement of the limiting protrusion (14) into and out of the buckle groove (7).

4. The detachable structure for an electric toothbrush head and body according to claim 2, characterized in that: The top and bottom of the connector (6) are respectively provided with a second rounded corner (9) to facilitate the connector (6) to enter and exit between the two sets of elastic clamping arms (13).

5. The detachable structure for an electric toothbrush head and body according to claim 2, characterized in that: The mounting base (2) includes a body (11) and a conical mounting shell (12) provided on the body (11). The body (11) is sleeved around the outside of the drive shaft (5). Two sets of elastic clamping arms (13) are provided on the body (11) and / or the conical mounting shell (12). The outer conical surface of the conical mounting shell (12) fits against the inner conical hole side of the brush head (1). The inner cylindrical hole side (18) of the conical mounting shell (12) fits against the outer cylindrical side of the drive shaft (5).

6. The detachable structure for an electric toothbrush head and body according to claim 1, characterized in that: The drive shaft (5) includes a first connecting part (15) disposed on the main body (4) and a second connecting part (16) at the end away from the main body (4). The outer diameter of the drive shaft (5) continuously decreases from the first connecting part (15) to the second connecting part (16).

7. The detachable structure for an electric toothbrush head and body according to claim 1, characterized in that: The mounting base (2) has multiple sets of radial bosses (17) arranged radially at intervals on its inner wall. The radial bosses (17) are used to abut against the side wall of the drive shaft (5).

8. The detachable structure for an electric toothbrush head and body according to claim 1, characterized in that: The mounting base (2) is provided with multiple sets of limiting grooves (19). The brush head component (1) includes a brush head rod (21) and a bristle part (22) installed on the brush head rod (21). Multiple sets of limiting blocks (23) are provided on the inner side wall of the brush head rod (21). The mounting base (2) is engaged with the limiting blocks (23) of the brush head rod (21) through the limiting grooves (19) to prevent the mounting base (2) from falling off the inside of the brush head component (1) during the insertion and removal process.

9. The detachable structure for an electric toothbrush head and body according to claim 1, characterized in that: The disassembly and assembly structure also includes a vibration assembly (24) disposed in the main body (4). The vibration assembly (24) is used to vibrate the brush head (1) to clean the teeth. The vibration assembly (24) includes a drive component (25) and a control board assembly (26). The control board assembly (26) is electrically connected to the drive component (25), and the transmission shaft (5) is disposed on the output shaft (27) of the drive component (25).

10. The detachable structure for an electric toothbrush head and body according to claim 9, characterized in that: The disassembly and assembly structure also includes a mounting bracket (28) and a seal (29). The mounting bracket (28) is clamped between the seal (29) and the body of the drive component (25). The drive shaft (5) passes through the seal (29) and protrudes from the main body (4). The seal (29) is used to seal the gap between the drive shaft (5) and the main body (4). The drive shaft (5) has a sealing groove (31) in the middle. The inner side wall of the seal (29) has a sealing protrusion (32). The drive shaft (5) is engaged with the sealing protrusion (32) of the seal (29) through the sealing groove (31).

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