WO2020150881A1 - Toothbrush assembly and electric toothbrush - Google Patents

Abstract

Provided are a toothbrush assembly and an electric toothbrush. The toothbrush assembly comprises a brush handle, a brush head and an elastic member, wherein the brush handle is provided with a mounting slot at an end portion thereof; the brush head comprises a brush head seat; the brush head seat is at least partially received inside the mounting slot; the elastic member elastically abuts against an outer side wall of the brush head seat and an inner side wall of the mounting slot, such that the brush head seat is detachably connected to the brush handle via the elastic member; and the elastic member can buffer the shaking of the brush head seat relative to the brush handle. When replacing the brush head, a user can remove the brush head separately from the mounting slot, and the brush handle does not need to be replaced, such that the disassembly of a connection structure of the brush handle and a driving device can be avoided, reducing the damage caused thereto, and reducing the replacement and waste of the brush handle, wherein same is more environmentally friendly and energy saving. Moreover, after the brush head is replaced, a brush head can still be firmly connected to the brush handle via the elastic member, and the elastic member can buffer the shaking of the brush head seat relative to the brush handle, so that the electric toothbrush does not easily generate noise when working.

Description

Toothbrush assembly and electric toothbrush Technical field

The application relates to the technical field of toothbrushes, in particular to a toothbrush assembly and an electric toothbrush.

Background technique

The current electric toothbrush includes a driving device, a brush head and a brush handle. The brush handle is installed on the drive shaft of the driving device. The brush head is fixed on the brush handle. When replacing the brush head, the brush head and the brush handle need to be removed from the drive shaft. Separation, but repeated disassembly is likely to cause wear of the drive shaft, which makes the brush handle and the drive shaft easy to loosen after being matched, and the electric toothbrush is prone to noise when working.

Summary of the invention

An embodiment of the present application provides a toothbrush assembly, the toothbrush assembly includes a brush handle, a brush head, and an elastic member, the brush handle is provided with a mounting groove at an end, the brush head includes a brush head holder, and the brush head holder At least partially accommodated in the installation groove, the elastic member elastically abuts against the outer side wall of the brush head holder and the inner side wall of the installation groove, so that the brush head holder is detachably connected to the brush handle via the elastic member , The elastic member can buffer the shaking of the brush head holder relative to the brush handle.

An embodiment of the present application also provides an electric toothbrush, which includes the toothbrush assembly described above.

In the toothbrush assembly and the electric toothbrush provided by the embodiments of the present application, the brush handle is provided with a mounting groove at the end, and the brush head holder is at least partially accommodated in the mounting groove, and then the elastic member elastically resists The outer side wall of the brush head holder and the inner side wall of the installation groove enable the brush head holder to be detachably connected to the brush handle via the elastic member. When replacing the brush head, the user can separately remove the brush head from the installation groove The brush handle does not need to be replaced, which can avoid disassembling the connection structure of the brush handle and the driving device, reduce damage, reduce the replacement and waste of the brush handle, and be more environmentally friendly and energy-saving, providing convenience for users. After replacing the brush head, the brush head is elastic The part can still be firmly connected with the brush handle, and the elastic part can buffer the shaking of the brush head base relative to the brush handle, so that the electric toothbrush is not easy to generate noise when it is working.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Fig. 1 is a first structural diagram of an electric toothbrush provided by an embodiment of the present application;

Figure 2 is a second structural diagram of an electric toothbrush provided by an embodiment of the present application;

FIG. 3 is a third structural diagram of an electric toothbrush provided by an embodiment of the present application;

Figure 4 is a first structural diagram of a toothbrush assembly provided by an embodiment of the present application;

Figure 5 is a second structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 6 is a third structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 7 is a fourth structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 8 is a fifth structural diagram of the toothbrush assembly provided by the embodiment of the present application;

9 is a sixth structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 10 is a seventh structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 11 is a eighth structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 12 is a 9th structural diagram of the toothbrush assembly provided by the embodiment of the present application;

Figure 13 is a tenth structural diagram of a toothbrush assembly provided by an embodiment of the present application;

FIG. 14 is a fourth structural diagram of an electric toothbrush provided by an embodiment of the present application;

15 is a schematic diagram five of the electric toothbrush provided by the embodiment of the present application;

Fig. 16 is an enlarged schematic diagram of the position A in Fig. 15.

detailed description

Please refer to FIG. 1 and FIG. 2, an embodiment of the present application provides an electric toothbrush 100, and the electric toothbrush 100 includes a toothbrush assembly 200 and a driving device 300. The toothbrush assembly 200 includes a handle 10, a brush head 20 and an elastic member 30. The brush handle 10 is provided with a mounting groove 11 at the end. The brush head 20 includes a brush head holder 21, and the brush head holder 21 is at least partially received in the mounting groove 11. The elastic member 30 elastically abuts against the outer side wall of the brush head holder 21 and the inner side wall of the mounting groove 11, so that the brush head holder 21 is detachably connected to the brush handle 10 via the elastic member 30. The member 30 can buffer the shaking of the brush head base 21 relative to the brush handle 10. The driving device 300 is detachably connected to the brush handle 10, and the driving device 300 can drive the brush handle 10 to vibrate to drive the brush head 20 to vibrate, so that the user can use the brush head 20 to efficiently clean each tooth section.

A mounting groove 11 is provided at the end of the brush handle 10, and the brush head holder 21 is at least partially received in the mounting groove 11, and then the elastic member 30 elastically abuts against the outer wall of the brush head holder 21 And the inner side wall of the installation groove 11, so that the brush head holder 21 can be detachably connected to the brush handle 10 via the elastic member 30. When replacing the brush head 20, the user can remove the brush head 20 from the installation groove 11 separately. Disassembled, and the brush handle 10 does not need to be replaced, which can avoid disassembling the connection structure of the brush handle 10 and the driving device 300, reduce damage, reduce the replacement and waste of the brush handle 10, and be more environmentally friendly and energy-saving, provide convenience for users, and replace the brush head 20 After that, the brush head 20 can still be firmly connected to the brush handle 10 via the elastic member 30, and the elastic member 30 can buffer the shaking of the brush head holder 21 relative to the brush handle 10, so that the electric toothbrush 100 is not prone to noise during operation.

Please refer to FIG. 2. In this embodiment, the driving device 300 includes a housing 40, a driving motor 50 and a circuit board 60. The housing 40 is substantially cylindrical, and the housing 40 can be grasped by a user. The housing 40 is provided with a receiving cavity 41. The driving motor 50 and the circuit board 60 are both fixed in the receiving cavity 41 of the housing 40. The driving motor 50 is electrically connected to the circuit board 60. The housing 40 is provided with a button 42 on the outside, and the switch device on the circuit board 60 can be triggered by pressing the button 42 to control the operation of the driving motor 50. The driving motor 50 can be a linear motor or a rotating motor, and can be set by itself according to actual needs.

The brush handle 10 may be made of metal material. For example, the brush handle 10 may be made of stainless steel or non-metal material. For example, the brush handle 10 may be made of plastic material, which can be set according to actual needs. The brush handle 10 includes a fixing base 12 and a connecting rod 13 fixedly connected to the fixing base 12. The fixing base 12 is provided with the mounting groove 11. The brush head 20 can be installed in the mounting groove 11 so that the brush head 20 and the fixing seat 12 are assembled into a whole.

The brush head 20 further includes bristles 22 fixedly connected to the brush head holder 21, the bristles 22 are located on the side of the brush head holder 21 away from the installation groove 11, and the bristles 22 are used to scrub teeth. The connecting rod 13 is detachably connected to the driving device 300. The driving device 300 drives the brush handle 10 to vibrate, and the brush handle 10 can drive the bristles 22 and the brush head holder 21 to perform high-frequency vibrations, thereby efficiently completing the action of washing teeth. Since the elastic member 30 elastically abuts the outer side wall of the brush head holder 21 and the inner side wall of the mounting groove 11, when the brush head holder 21 vibrates with the brush handle 10 at high frequency, the elastic member 30 can buffer the The brush head holder 21 shakes relative to the brush handle 10 to keep the brush head holder 21 stable relative to the brush handle 10 to avoid the brush head 20 from shaking and generating noise during the cleaning of teeth, which is beneficial to ensure user experience.

Referring to FIG. 3, the brush head holder 21 has two first arc surfaces 23 opposed to each other and two second arc surfaces 24 opposed to each other. The two first arc surfaces 23 are connected to the two second arc surfaces 24 respectively. The two first arc surfaces 23 and the two second arc surfaces 24 are both located on the outer peripheral side of the brush head holder 21, and the two first arc surfaces 23 and the two second arc surfaces The arc surface 24 constitutes the outer peripheral side surface of the brush head holder 21. The radius of the first circular arc surface 23 is smaller than the radius of the second circular arc surface 24, so that the brush head holder 21 has an elliptical shape, and the bristles 22 are distributed on the brush head holder 21 away from the installation groove On the side 11, the distribution shape of the bristles 22 is also elliptical, which is beneficial to increase the contact area between the bristles 22 and the teeth and improve the cleaning effect. The shape of the installation groove 11 is adapted to the shape of the brush head holder 21 so that the brush head holder 21 is installed in the installation groove 11.

Please refer to FIG. 4, in the first embodiment, the elastic member 30 is a soft rubber sleeve, and the elastic member 30 is in sealing engagement with the outer peripheral side of the brush head holder 21 and the inner peripheral side of the installation groove 11.

In this embodiment, the elastic member 30 is wrapped on the outer peripheral side of the brush head holder 21 under its own elasticity, that is, the elastic member 30 is wrapped on both sides of the brush head holder 21 under its own elasticity. A first circular arc surface 23 and two second circular arc surfaces 24 make the elastic member 30 closely fit the outer peripheral side wall of the brush head holder 21, so that the elastic member 30 and the brush head holder The outer peripheral side of 21 is hermetically fitted. The elastic member 30 can be installed in the installation groove 11 along with the brush head holder 21, and the elastic member 30 elastically abuts against the inner side wall of the installation groove 11, so that the elastic member 30 and the installation groove 11 The inner peripheral side wall is tightly attached, so that the elastic member 30 is in a sealing fit with the inner peripheral side of the installation groove 11. By sealingly fitting the elastic member 30 with the outer peripheral side of the brush head holder 21 and the inner peripheral side of the mounting groove 11, the elastic member 30 can prevent stains such as liquid from remaining on the outer peripheral side of the brush head holder 21 And on the inner circumferential side of the installation groove 11, so as to keep the outer circumferential side of the brush head holder 21 and the inner circumferential side of the installation groove 11 clean and clean, and avoid the breeding of bacteria. The elastic member 30 may be made of rubber material or silicone material. In other embodiments, the elastic member 30 may also be a metal elastic member, which is not limited here, and can be set according to actual needs. The elastic member 30 is attached to the outer peripheral side wall of the brush head base 21, and the elastic member 30 is integrally provided with the brush head base 21, that is, the elastic member 30, the brush head base 21 and the The bristles 22 together form the brush head 20, and the brush head 20 can be installed in the installation groove 11 by tightly fitting the elastic member 30 with the installation groove 11.

Please refer to FIG. 5, in one embodiment, the brush handle 10 is provided with a first groove 14 adjacent to the opening on the inner side wall of the mounting groove 11, and the first groove 14 is along the inner side of the mounting groove 11. The elastic member 30 is provided with a first protrusion 31 on the outer wall of the elastic member 30, and the first protrusion 31 is connected to the first groove 14 in a snap-fit connection and sealingly fits.

In this embodiment, the first groove 14 is an annular groove. The first protrusion 31 is a ring-shaped protrusion, and the first protrusion 31 is matched with the first groove 14. The first protrusion 31 has elasticity, and the first protrusion 31 can elastically abut against the inner side wall of the first groove 14 so that the first protrusion 31 closely adheres to the inner side wall of the first groove 14 Therefore, it is ensured that the first protrusion 31 has a sealing effect on the inner wall of the installation groove 11, and prevents liquid from flowing to the inner wall of the installation groove 11 through the open end of the installation groove 11, which may easily breed bacteria.

The first protrusion 31 is engaged in the first groove 14, so that the elastic member 30 is stable in the mounting groove 11, so that the elastic member 30 and the brush handle 10 form a stable structure When removing the brush head 20 from the brush handle 10, the operator applies a peeling force to the brush head holder 21, and the engagement force between the first protrusion 31 and the first groove 14 The elastic member 30 can be restricted from being separated from the mounting groove 11 along with the brush head holder 21, so that the brush head holder 21 can be separated from the mounting groove 11 separately, while the elastic member 30 is still firmly fixed in the mounting groove 11 In 11, the brush head holder 21 can be replaced separately, which improves the convenience of replacing the brush head 20. The brush head holder 21 is pressed into the elastic member 30, and the engagement force of the first protrusion 31 and the first groove 14 can restrict the displacement of the elastic member 30 relative to the brush head holder 21 , Easy to install and operate. If the elastic member 30 is aging or has a large loss, the elastic member 30 can also be replaced separately, the first protrusion 31 can be detached from the first groove 14 and replaced with a new elastic member 30. The replacement cost of the elastic member 30 is low, and it is easy to ensure that the brush head 20 is stable relative to the brush handle 10.

Please refer to FIG. 6, further, the brush handle 10 is provided with a second groove 15 near the bottom of the inner side wall of the installation groove 11, and the second groove 15 extends along the inner circumference of the installation groove 11. The elastic member 30 is provided with a second protrusion 32 on the outer wall opposite to the first protrusion 31, and the second protrusion 32 is connected to the second groove 15 by snap-fitting and sealingly fit.

In this embodiment, the second groove 15 is an annular groove. The second protrusion 32 is a ring-shaped protrusion, and the second protrusion 32 is matched with the second groove 15. The second protrusion 32 has elasticity, and the second protrusion 32 can elastically abut the inner side wall of the second groove 15 so that the second protrusion 32 closely adheres to the inner side wall of the second groove 15 Therefore, it is ensured that the second protrusion 32 has a sealing effect on the inner wall of the installation groove 11 and prevents liquid from flowing to the inner wall of the installation groove 11 through the bottom of the installation groove 11.

Since liquid is likely to remain on the brush head holder 21 during brushing, the liquid easily flows into the installation groove 11, and the inner peripheral side wall of the installation groove 11 is covered by the elastic member 30, and the first protrusion 31 can block The liquid flows to the inner peripheral side wall of the installation groove 11 through the opening of the installation groove 11, and the second protrusion 32 can block the liquid from flowing to the inner circumference side of the installation groove 11 through the bottom of the installation groove 11 On the wall, the sealing effect of the elastic member 30 on the inner wall of the installation groove 11 is enhanced, and the liquid remains on the inner wall of the installation groove 11 to prevent bacteria from growing easily. By the second protrusion 32 being engaged with the second groove 15, the engaging force of the second protrusion 32 and the second groove 15 can restrict the elastic member 30 relative to the handle 10 The displacement makes the elastic member 30 stable on the entire inner side wall of the mounting groove 11, which can prevent the elastic member 30 from being separated from the mounting groove 11 with the brush head holder 21 near the bottom of the mounting groove 11 It is separated from the inner wall of the installation groove 11.

Referring to FIG. 7, in another embodiment, the brush head holder 21 is provided with positioning grooves 25 on the outer wall, and the elastic member 30 is provided with positioning protrusions 33 on the inner wall. The positioning protrusions 33 are connected to the positioning grooves. The groove 25 is snap-connected.

In this embodiment, the positioning groove 25 extends along the circumferential direction of the brush head holder 21, that is, the positioning groove 25 is an annular groove. The positioning protrusion 33 is a ring-shaped protrusion, and the positioning protrusion 33 is matched with the positioning groove 25. The positioning protrusion 33 has elasticity, and the positioning protrusion 33 can elastically abut against the inner side wall of the positioning groove 25, so that the positioning protrusion 33 is closely attached to the inner side wall of the positioning groove 25 to realize the The positioning protrusion 33 is in sealing engagement with the positioning groove 25. Moreover, the engagement force of the positioning protrusion 33 and the positioning groove 25 can limit the displacement of the elastic member 30 relative to the brush head holder 21, so that the elastic member 30 is firmly connected to the brush head holder 21 . When the brush head 20 is removed from the brush handle 10, the operator applies a peeling force to the brush head holder 21, and the brush head holder 21 can be separated from the mounting groove as a whole with the elastic member 30 11. It is convenient to replace the brush head 20 and the elastic member 30 together. In other implementations, the positioning groove 25 is provided on the inner wall of the elastic member 30, and the positioning protrusion 33 is provided on the inner wall of the brush holder 21.

The brush head holder 21 may be provided with two positioning grooves 25 opposite to each other on the outer wall. One of the positioning grooves 25 is located at an end of the brush head holder 21 close to the bristles 22, and the other positioning groove 25 is located at an end of the brush head holder 21 away from the bristles 22. The elastic member 30 is provided with two positioning protrusions 33 arranged oppositely. The two positioning protrusions 33 are respectively snap-connected to the two positioning grooves 25 and sealed to fit, so as to ensure that the elastic member 30 as a whole is firmly connected with the brush head base 21 and prevent liquid from remaining in the On the outer peripheral side wall of the brush holder 21.

8 and 9, in the second embodiment, the elastic member 30 includes a soft rubber ring 34 and a hard rubber ring 35, the soft rubber ring 34 is laminated on the inner or outer circumference of the hard rubber ring 35 Side, the soft rubber ring 34 is wrapped on the outer peripheral side of the brush head base 21 or the inner peripheral side of the mounting groove 11, and the hard rubber ring 35 is interference fit on the inner peripheral side of the mounting groove 11 or the The brush head holder 21 is on the outer peripheral side.

Please refer to FIG. 8. In an embodiment, the soft rubber ring 34 is laminated on the inner peripheral side of the hard rubber ring 35. The soft rubber ring 34 covers the outer peripheral side of the brush head holder 21, and the hard rubber ring 35 is interference fit on the inner peripheral side of the installation groove 11. In this embodiment, the soft rubber ring 34 is wrapped on the outer peripheral side of the brush head holder 21, so that the elastic member 30 and the brush head holder 21 can be detachably connected, and the brush head holder 21 can be removed from The soft rubber ring 34 is removed; the hard rubber ring 35 is interference-fitted on the inner circumferential side of the mounting groove 11, so that the elastic member 30 is tightly fitted with the mounting groove 11, so that the elastic The piece 30 is assembled with the brush handle 10 to form a whole. When replacing the brush head 20, the brush head holder 21 can be removed from the soft rubber, and the elastic member 30 can be retained in the mounting groove 11, and the new brush head 20 and the soft rubber ring 34 Just install and cooperate to facilitate the operation of replacing the brush head 20.

Please refer to FIG. 9. In another embodiment, the soft rubber ring 34 is laminated on the outer peripheral side of the hard rubber ring 35. The soft rubber ring 34 is wrapped on the inner peripheral side of the mounting groove 11, and the hard rubber ring 35 is interference fit on the outer peripheral side of the brush holder 21. In this embodiment, by covering the inner circumference of the mounting groove 11 with the soft rubber ring 34, the elastic member 30 is detachably connected to the brush head holder 21, and the elastic member 30 can be removed from the The mounting groove 11 is disassembled; the hard rubber ring 35 is interference fit on the outer peripheral side of the brush head holder 21, so that the elastic member 30 is tightly fitted with the brush head holder 21, so that the elastic member 30 is assembled with the brush head base 21 to form a whole. When replacing the brush head 20, the brush head 20 and the elastic member 30 can be detached from the mounting groove 11 as a whole to facilitate the replacement of the brush head 20 and the elastic member 30 together.

Referring to FIG. 10, in the third embodiment, the elastic member 30 is a soft rubber patch, the toothbrush assembly 200 includes a plurality of the elastic members 30, and the plurality of the elastic members 30 are bonded to the brush head The outer peripheral side of the seat 21 or the inner peripheral side of the mounting groove 11.

In this embodiment, the elastic member 30 has a sheet shape. A plurality of the elastic members 30 may be bonded to the outer periphery of the brush head holder 21. The brush head holder 21 can be firmly installed in the mounting groove 11 through a plurality of the elastic members 30. A plurality of the elastic members 30 are fixed on the brush head 20, and can be installed in the installation groove 11 together with the brush head 20 or separated from the installation groove 11 to facilitate the replacement of the brush head 20 and The elastic member 30. In other embodiments, a plurality of the elastic members 30 are bonded to the inner peripheral side of the installation groove 11. Then, a plurality of the elastic members 30 are fixed on the inner peripheral side of the installation groove 11, and the brush head 20 can be separated from the installation groove 11 separately, so that the brush head 20 can be replaced separately.

Please refer to FIG. 11, further, the brush head holder 21 is provided with a boss 124 extending in the circumferential direction, and the boss 124 covers the opening of the mounting groove 11 to shield the elastic member 30.

In this embodiment, the brush head holder 21 has a top end 26 and a bottom end 27 opposite to the top end 26. The brush head holder 21 is provided with the bristles 22 on the end surface of the top end 26. The boss 124 is provided on the peripheral side of the top end 26. The boss 124 has a ring shape. The boss 124 is attached to the end surface of the elastic member 30 to limit the elastic member 30 and prevent the elastic member 30 from escaping from the mounting groove 11. The elastic member 30 is located between the inner wall of the installation groove 11 and the outer wall of the brush head holder 21, and the opening of the installation groove 11 is covered by the boss 124 to shield the elastic member 30 so that the The elastic member 30 is hidden in the installation groove 11, which makes the appearance of the toothbrush assembly 200 relatively simple, which is beneficial to improve the appearance performance.

Please refer to FIG. 11. In one embodiment, the boss 124 is at least partially received in the mounting groove 11, and the boss 124 is in clearance fit with the inner side wall of the mounting groove 11. In this embodiment, the boss 124 is adjacent to the opening of the mounting groove 11 and opposite to the bottom of the mounting groove 11, and the elastic member 30 is located between the boss 124 and the bottom of the mounting groove 11 . The brush head holder 21 is firmly installed in the installation groove 11 via the elastic member 30, and the boss 124 is in clearance fit with the inner side wall of the installation groove 11, so that the boss 124 and the installation groove 11 11 Positioning cooperation is beneficial to ensure the assembly accuracy of the brush head holder 21 and the brush handle 10. Optionally, the end surface of the boss 124 adjacent to the bristles 22 is flush with the open end surface of the mounting groove 11, so that the toothbrush assembly 200 has a simpler appearance and is beneficial to improve appearance performance.

Please refer to FIG. 12. In another embodiment, the boss 124 is located outside the mounting groove 11 and resists the open end surface of the mounting groove 11. In this embodiment, the portion of the brush head holder 21 between the boss 124 and the bottom end 27 is received in the installation groove 11. The boss 124 is located outside the mounting groove 11 and abuts against the opening end of the mounting groove 11, so that the boss 124 completely covers the opening end of the mounting groove 11, so that the boss 124 can prevent external liquid from entering the installation groove 11. The boss 124 is located on the outside of the installation groove 11. When replacing the brush head 20, the boss 124 can be used as a part where the user can use the force to remove the brush head 20. The boss 124 may be provided with protrusions or grooves on the outer circumference side, so that the user can pick up the protrusions or grooves of the boss 124 with fingers, and then force to remove the brush head 20, which is beneficial to improve the convenience of disassembly degree.

Please refer to FIG. 13, further, the fixing seat 12 includes a fixing body 121, the fixing body 121 is fixedly connected to the connecting rod 13, the mounting groove 11 is provided in the fixing body 121, and the mounting groove 11 has The first opening 111 and the second opening 112 opposite to the first opening 111, the brush head holder 21 and the elastic member 30 enter the mounting groove 11 through the first opening 111, and the second opening 112 is used to provide an operating space for pushing out the brush head holder 21.

In this embodiment, the fixing body 121 is the main body of the fixing base 12. The fixing body 121 provides installation space for the brush head base 21 and the elastic member 30 through the installation groove 11. The fixing base 12 further includes a rear cover 122, which is detachably connected to the fixing main body 121 and covers the second opening 112. The rear cover 122 is provided with a limiting protrusion 123 extending in the circumferential direction. The limiting protrusion 123 has a ring shape. The limiting protrusion 123 enters the installation groove 11 through the second opening 112, and the limiting protrusion 123 is tightly fitted with the inner peripheral side wall of the installation groove 11, so that the rear cover 122 passes through The limiting protrusion 123 is detachably connected to the fixing body 121. When the brush head 20 needs to be replaced, the rear cover 122 can be removed so that the second opening 112 is exposed to the outside, thereby facilitating the ejection of the brush head 20 from the installation groove 11 from the second opening 112; the replacement is completed After the brush head 20, the limiting protrusion 123 is tightly fitted with the inner peripheral side wall of the mounting groove 11, so that the back cover 122 covers the second opening 112, and the back cover 122 can The elastic member 30 and the brush head holder 21 in the installation groove 11 are protected. In other embodiments, the back cover 122 may be integrally provided with the fixing body 121, so that the fixing seat 12 has a closed end.

Referring to FIG. 14, the connecting rod 13 has a first mounting hole 131 at one end away from the fixing base 12, and the first mounting hole 131 extends along the length direction of the connecting rod 13. The toothbrush assembly 200 further includes a positioning core 16 which is cylindrical. The positioning core 16 is in interference fit with the first mounting hole 131, and the positioning core 16 is used to detachably connect the driving device 300. One end of the positioning core 16 is provided with a second mounting hole 161 extending in the axial direction, and an opening 162 extending from the outer wall of the positioning core 16 to communicate with the second mounting hole 161. The positioning core 16 is also provided with a buckle 163. One end of the buckle 163 is fixed in the opening 162, and the other end at least partially extends into the second mounting hole 161. The buckle 163 is used to interact with The driving device 300 is snap-connected. The buckle 163 has a fixing portion 164 and an engaging portion 165 disposed opposite to the fixing portion 164. The fixing portion 164 is fixed on the inner wall of the opening 162. The engaging portion 165 is located at an end of the buckle 163 adjacent to the second mounting hole 161. The engaging portion 165 can use the fixing portion 164 as a fulcrum to be away from or close to the central axis of the second mounting hole 161 under external force.

15 and 16, the drive shaft 52 of the drive motor 50 extends into the second mounting hole 161, the drive shaft 52 is provided with a slot 51, and the engaging portion 165 is engaged with the drive shaft 52 of the card slot 51. The engaging portion 165 has a first guide surface 166 and a second guide surface 167 arranged at an angle with the first guide surface 166. The first guiding surface 166 is located on the side of the engaging portion 165 away from the fixing portion 164, and the first guiding surface 166 faces the opening of the second mounting hole 161. The second guide surface 167 is located on the side of the engaging portion 165 adjacent to the fixing portion 164, and the second guide faces away from the opening of the second mounting hole 161. When the driving shaft 52 is extended into the second mounting hole 161 to install the connecting rod 13 on the driving device 300, the driving shaft 52 is in contact with the first guide surface 166 to guide the The engaging portion 165 is away from the central axis of the second mounting hole 161 with the fixing portion 164 as a fulcrum. When the engaging slot 51 moves to a position relative to the engaging portion 165 with the drive shaft 52, the engaging The portion 165 is close to the second mounting hole 161 under the action of elastic recovery and is engaged in the slot 51; when the drive shaft 52 is separated from the second mounting hole 161, the connecting rod 13 and the In the driving device 300, the driving shaft 52 acts against the second guide surface 167 to guide the engaging portion 165 to use the fixing portion 164 as a fulcrum to be away from the central axis of the second mounting hole 161, thereby It is convenient to realize the assembly or disassembly and separation of the connecting rod 13 and the driving device 300, simple operation, convenient and practical.

The buckle 163 is not limited to the above-mentioned structural form. In other embodiments, different structural types of the buckle 163 can be used according to actual needs to realize the detachable connection between the brush handle 10 and the driving device 300. OK.

In the toothbrush assembly and the electric toothbrush provided by the embodiments of the present application, the brush handle is provided with a mounting groove at the end, and the brush head holder is at least partially accommodated in the mounting groove, and then the elastic member elastically resists The outer side wall of the brush head holder and the inner side wall of the installation groove enable the brush head holder to be detachably connected to the brush handle via the elastic member. When replacing the brush head, the user can separately remove the brush head from the installation groove The brush handle does not need to be replaced, which can avoid disassembling the connection structure of the brush handle and the driving device, reduce damage, reduce the replacement and waste of the brush handle, and is more environmentally friendly and energy-saving, providing convenience for users. After replacing the brush head, the brush head is elastic The part can still be firmly connected with the brush handle, and the elastic part can buffer the shaking of the brush head base relative to the brush handle, so that the electric toothbrush is not easy to generate noise when it is working.

To sum up, although this application has been disclosed as above in a preferred embodiment, the preferred embodiment is not intended to limit the application. Those of ordinary skill in the art can do anything without departing from the spirit and scope of the application. Various changes and modifications are made, so the protection scope of this application is subject to the scope defined by the claims.

Claims (20)

A toothbrush assembly, characterized in that the toothbrush assembly comprises a brush handle, a brush head and an elastic member, the brush handle is provided with a mounting groove at an end, the brush head includes a brush head base, and the brush head base is at least Partly housed in the installation groove, the elastic member elastically abuts against the outer side wall of the brush head holder and the inner side wall of the installation groove, so that the brush head holder is detachably connected to the brush handle via the elastic member, The elastic member can buffer the shaking of the brush head holder relative to the brush handle. 3. The toothbrush assembly of claim 1, wherein the elastic member is a soft rubber sleeve, and the elastic member is in a sealing fit with the outer peripheral side of the brush head holder and the inner peripheral side of the installation groove. The toothbrush assembly of claim 2, wherein the handle is provided with a first groove on the inner side wall of the installation groove adjacent to the opening, and the first groove extends along the inner circumference of the installation groove , The elastic member is provided with a first protrusion on the outer wall, and the first protrusion is connected to the first groove in a snap fit and is in a sealing fit. The toothbrush assembly of claim 3, wherein the handle is provided with a second groove on the inner side wall of the installation groove adjacent to the bottom, and the second groove extends along the inner circumference of the installation groove The elastic member is provided with a second protrusion arranged opposite to the first protrusion on the outer wall, and the second protrusion is connected to the second groove in a snap-fit connection and sealingly fits. The toothbrush assembly of claim 2, wherein the brush head base is provided with positioning grooves on the outer wall, the elastic member is provided with positioning protrusions on the inner wall, and the positioning protrusions are connected to the positioning grooves. Click to connect. The toothbrush assembly according to claim 1, wherein the elastic member comprises a soft rubber ring and a hard rubber ring, the soft rubber ring is laminated on the inner or outer peripheral side of the hard rubber ring, and the soft rubber ring The rubber ring is wrapped on the outer peripheral side of the brush head base or the inner peripheral side of the installation groove, and the hard rubber ring is interference fit on the inner peripheral side of the installation groove or the outer peripheral side of the brush head base. The toothbrush assembly of claim 1, wherein the elastic member is a soft rubber patch, the toothbrush assembly includes a plurality of the elastic members, and the plurality of elastic members are bonded to the brush head base The outer peripheral side or the inner peripheral side of the mounting groove. 5. The toothbrush assembly of claim 1, wherein the brush head base is provided with a boss extending in a circumferential direction, and the boss covers the opening of the installation groove to shield the elastic member. 8. The toothbrush assembly of claim 8, wherein the boss is at least partially received in the mounting groove, and the boss is in clearance fit with the inner wall of the mounting groove. 8. The toothbrush assembly of claim 8, wherein the boss is located outside the installation groove and abuts against the opening end surface of the installation groove. 8. The toothbrush assembly of claim 8, wherein the boss is attached to the end surface of the elastic member to limit the elastic member. The toothbrush assembly according to any one of claims 1 to 11, wherein the brush head holder has two first arc surfaces oppositely arranged and two second arc surfaces oppositely arranged. The first circular arc surface and the two second circular arc surfaces are both located on the outer peripheral side of the brush head holder, and the two first circular arc surfaces are respectively connected to the two second circular arc surfaces. The toothbrush assembly according to any one of claims 1 to 11, wherein the brush head further comprises bristles fixedly connected to the brush head holder, and the bristles are located on the brush head holder away from the installation groove. side. The toothbrush assembly of claims 1-11, wherein the brush handle comprises a fixing seat and a connecting rod fixedly connected to the fixing seat, the fixing seat is provided with the mounting groove, and the connecting rod is used for A driving device is detachably connected, so that the driving device drives the fixing seat and the brush head to vibrate via the connecting rod. The toothbrush assembly of claim 14, wherein the fixing base comprises a fixing body, the fixing body is fixedly connected to the connecting rod, the mounting groove is provided in the fixing body, and the mounting groove has a An opening and a second opening opposite to the first opening, the brush head base and the elastic member enter the installation groove through the first opening, and the second opening is used to provide ejection of the brush Operating space of the headstock. 15. The toothbrush assembly of claim 15, wherein the fixing base further comprises a back cover, the back cover is detachably connected to the fixing body and covers the second opening. The toothbrush assembly according to claim 14, wherein the connecting rod is provided with a first mounting hole at one end away from the fixing base, and the toothbrush assembly further comprises a positioning core which is connected to the first mounting Hole interference fit, and the positioning core is used to detachably connect the drive device. The toothbrush assembly of claim 17, wherein one end of the positioning core is provided with a second mounting hole extending in the axial direction, and an opening extending from the outer wall of the positioning core to communicate with the second mounting hole, The positioning core is further provided with a buckle, one end of the buckle is fixed in the opening hole, and the other end at least partially extends into the second mounting hole, and the buckle is used for engaging and connecting with the driving device. An electric toothbrush, characterized in that it comprises the toothbrush assembly according to any one of claims 1-18. The electric toothbrush according to claim 19, wherein the electric toothbrush further comprises a driving device, the driving device is detachably connected with the brush handle, and the driving device drives the brush handle to vibrate to drive all the brush handles. The brush head vibrates.

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