CN219983110U

CN219983110U - Bracket assembly and electric toothbrush with same

Info

Publication number: CN219983110U
Application number: CN202320320979.5U
Authority: CN
Inventors: 黄少东
Original assignee: Guangdong Alpha Health Technology Co ltd
Current assignee: Guangdong Alpha Health Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-11-10
Anticipated expiration: 2033-02-23

Abstract

The utility model provides a bracket assembly, which is mounted on an electric toothbrush and used for being combined with a motor in the electric toothbrush, the bracket assembly comprises a bracket and a mounting assembly, and at least one part of the mounting assembly is combined with the bracket/motor; the mounting assembly can move in the up-down direction and/or swing around the direction crossing the up-down direction; according to the utility model, the movable mounting assembly is arranged on the bracket, and the elastic piece is arranged in the mounting assembly and between the mounting assembly and the bracket, so that the mounting assembly can move up and down and/or swing around the direction crossing the up and down direction, the brush head triggers the key when being subjected to downward pressure or lateral force, and the buzzer sends out a sound prompt to remind a user to perform pressure adjustment so as to protect the oral cavity.

Description

Bracket assembly and electric toothbrush with same

Technical Field

The utility model relates to the field of nursing tools, in particular to a bracket assembly and an electric toothbrush with the bracket assembly.

Background

The electric toothbrush utilizes the motor to drive the brush head to rotate or swing so as to achieve the purpose of cleaning teeth, can help people to clean teeth better when people clean the oral cavity, generally comprises the brush head, a brush handle and a bracket arranged inside the brush handle, and the bracket can be used for installing components such as the motor, a battery and the like.

When the existing electric toothbrush is used for cleaning the oral cavity, in order to enable the cleaning effect to be better, a user can feel excessive pressure on the toothbrush head or force the toothbrush head by special effort, the vibration intensity of the toothbrush head felt by the teeth is higher, but the bracket of the existing electric toothbrush is fixed, when the toothbrush head is stressed excessively, the adjustment cannot be carried out, the electric toothbrush is damaged to the teeth and the gums, and the expected cleaning effect cannot be achieved.

Disclosure of Invention

The utility model provides a bracket component, which solves the technical problem that an electric toothbrush bracket is fixed and cannot be subjected to pressure adjustment, and the specific scheme is as follows:

a bracket assembly mounted to an electric toothbrush and for use in combination with a motor in the electric toothbrush, the bracket assembly comprising a bracket and a mounting assembly, at least a portion of the mounting assembly being combined with the bracket/motor; the mounting assembly may be movable in an up-down direction and/or may be oscillated about a direction intersecting the up-down direction.

The mounting assembly comprises a first mounting piece and a second mounting piece which are combined with each other, the first mounting piece is combined with the motor, and the second mounting piece is combined with the bracket.

The bracket assembly further includes at least one of first and second elastic members opposing in the left-right direction and at least one of third and fourth elastic members opposing in the front-rear direction, the first and second elastic members being for coupling with the second mount or the first mount, the third and fourth elastic members being for coupling with the bracket or the second mount.

The support assembly further comprises a key part, the key part comprises a first key and a second key, the first key is combined with the second mounting piece, and the second key is combined with the support.

The first mounting member has a first receiving cavity receiving at least a portion of the motor, a first opening facing upwardly for exposing at least a portion of the motor outwardly, and a first bottom surface facing downwardly for interacting with the first resilient member and/or the second resilient member.

The first mounting piece further comprises a connecting portion combined with the second mounting piece and a first contact portion extending downwards from the first bottom surface, the connecting portion is combined with the second mounting piece, and the first contact portion is used for triggering the first key.

The second mounting member has a second receiving cavity for receiving the first mounting member, a second opening facing upward, and a second bottom surface facing downward for interaction with the third and/or fourth elastic member.

The second mounting piece further comprises a connected part matched with the connecting part, a second contact part extending downwards from the second bottom surface and a combining part extending downwards from the second bottom surface, the connecting part moves along the connected part in the up-down direction, the second contact part is used for triggering a second key, and the combining part is used for combining with the bracket.

The bracket comprises a third opening, a spacing part and a groove, wherein the spacing part is movably combined with the second mounting piece, the groove is positioned below the third opening in the up-down direction, and the groove is positioned above the spacing part;

the spacing part is provided with an upward facing upper surface, the bracket further comprises a combined part arranged on the upper surface, the combined part and the combined part are combined with each other, and the combined part can swing around the combined part.

The utility model also provides an electric toothbrush which at least comprises a brush head and a brush handle which are mutually combined, wherein the brush head is detachably arranged on the brush handle, the interior of the brush handle is of a cavity structure, and is characterized in that,

the electric toothbrush further comprises a bracket component and a motor, wherein the bracket component and the motor are positioned in the brush handle;

the bracket assembly comprises a bracket and a mounting assembly, at least a part of the mounting assembly is combined with the bracket/motor;

the mounting assembly may be movable in an up-down direction and/or may be oscillated about a direction intersecting the up-down direction.

As described above, the movable mounting component is arranged on the bracket, and the elastic piece is arranged in the mounting component and between the mounting component and the bracket, so that the mounting component can move up and down and/or swing around the direction crossing the up and down direction, the brush head triggers the key when receiving downward pressure or lateral force, and the buzzer sends out an audible prompt to remind a user to perform pressure adjustment so as to protect the oral cavity.

Drawings

Fig. 1 is a perspective view of an electric toothbrush according to the present utility model.

Fig. 2 is an exploded view of a portion of an electric toothbrush according to the present utility model.

Fig. 3 is a perspective view of a hidden part of the electric toothbrush according to the present utility model.

Fig. 4 is an exploded view of the hidden parts of the electric toothbrush according to the present utility model.

Fig. 5 is a perspective view of an electric toothbrush motor according to the present utility model.

Fig. 6A and 6B are perspective views of a first mounting member of an electric toothbrush according to the present utility model.

Fig. 6C is a cross-sectional view of the first attachment of the electric toothbrush according to the present utility model, taken along the C-C plane, as seen in the left-right direction.

Fig. 7A and 7B are perspective views of a second mount for an electric toothbrush according to the present utility model.

Fig. 7C is a cross-sectional view of the second mounting member of the electric toothbrush according to the present utility model, as seen from the front to the rear, taken along the D-D plane.

Fig. 7D is a cross-sectional view of the second mounting member of the electric toothbrush according to the present utility model, as seen from right to left, taken along the plane E-E.

Fig. 8 is a perspective view of an electric toothbrush holder according to the present utility model.

Fig. 9 is a perspective view of an electric toothbrush holder assembly in accordance with the present utility model.

Fig. 10A is a cross-sectional view of the electric toothbrush according to the present utility model, taken along the A-A plane, as viewed from the rear toward the front.

Fig. 10B is an enlarged schematic view of a portion a in fig. 10A.

Fig. 11A is a cross-sectional view of the hidden part of the electric toothbrush according to the present utility model, taken along the B-B plane, and viewed from right to left.

Fig. 11B is an enlarged schematic view of a portion B in fig. 11A.

Detailed Description

FIG. 1 is a perspective view of an electric toothbrush in accordance with the present utility model; FIG. 2 is an exploded view of a portion of an electric toothbrush in accordance with the present utility model; FIG. 3 is a perspective view of a hidden section of an electric toothbrush in accordance with the present utility model; FIG. 4 is an exploded view of the hidden section of the electric toothbrush according to the present utility model; fig. 5 is a perspective view of an electric toothbrush motor according to the present utility model.

As shown in fig. 1 to 5, the electric toothbrush 100 includes a brush head (not shown), a handle 2, and a bottom cover 24 combined with each other, the handle 2 having a first end 21 and a second end 22 opposite to each other in one direction, the handle 2 further including a control button 23 on an outer surface, and for convenience of description and understanding, the present embodiment defines a direction in which the first end 21 points to the second end 22 as a lower direction, a direction in which the second end 22 points to the first end 21 as an upper direction, a direction in which the control button 23 points as a front direction, and vice versa, a direction perpendicular to the up-down direction, the front-rear direction as a left-right direction, depending on the state shown in fig. 1 and 2.

As further shown in fig. 1-5, the head is removably mounted at the first end 21 of the handle 2 and the bottom cover 24 is removably mounted at the second end 22 of the handle 2; the inside of brush holder 2 is cavity structure, electric toothbrush 100 still includes the control panel 3 that is arranged in the brush holder 2 cavity, motor 5, support subassembly 8 and battery 9, specifically, support subassembly 8 includes support 4, installation component 6 and button portion 7, control panel 3 and support 4 combine, in the fore-and-aft direction, control panel 3 is arranged in the place ahead of support 4, further, control panel 3 includes the control button 31 that is arranged in the top, control button 31 is connected with control panel 3 electricity, control button 31 is used for controlling electric toothbrush 100 work, electric toothbrush 100 still includes the buzzer 32 that is arranged in brush holder 2 inside, further, buzzer 32 is connected with button portion 7 electricity, the pressure of buzzer 32 when being used for the suggestion user to brush teeth is too big, in order to carry out the dynamics adjustment, thereby avoid the oral cavity injury, further, buzzer 32 can set up on control panel 3, also can set up on support 4, still can set up the outside at brush holder 2. Specifically, the motor 5 is combined with the mounting assembly 6, the motor 5 includes a motor main body 51 and an output shaft 52 combined with the motor main body 51, the output shaft 52 is also combined with the brush head in a detachable manner, the motor 51 rotates or swings the brush head through the output shaft 52 to clean the oral cavity, the motor 5 further has a first combining part 53 located below the motor main body 51, the first combining part 53 is used for combining with the mounting assembly 6, and further, the first combining part 53 may be a protrusion protruding downwards from the motor main body 51 or a groove recessed upwards into the motor main body 51.

The mounting assembly 6 is movably mounted on the support 4, specifically, the mounting assembly 6 includes a first mounting member 61 and a second mounting member 62 which are combined with each other, the combination may be clamping connection, bonding connection, screw combination, etc., further, the first mounting member 61 is used for being combined with the motor 5, the second mounting member 62 is used for being movably combined with the support 4, when the buzzer 32 is arranged on the control board 3, the key part 7 is electrically connected with the control board 3, meanwhile, the key part 7 is electrically connected with the buzzer 32, so that the key part 7 can control the buzzer 32, when the key part 7 is triggered, the buzzer 32 will generate sound to prompt a user to adjust tooth brushing force, the key part 7 includes a first key 71 and a second key 72 which are separated from each other, the first key 71 is used for being combined with the second mounting member 62, the first key 71 is also combined with the first mounting member 61, the second key 72 is used for being combined with the support 4, the second key 72 is also combined with the second mounting member 62, in other embodiments, the first key 71/second key 72 is also combined with the second key 72, for example, the first key 72 is combined with the brush handle 72 is also combined with other components. Specifically, a battery 9 is mounted to the bracket 4 for electrical connection with the control board 3 to provide operating power to the electric toothbrush 100.

The bracket assembly 8 further includes at least one of a first elastic member 631 and a second elastic member 632 opposing in the left-right direction and at least one of a third elastic member 641 and a fourth elastic member 642 opposing in the front-rear direction, the first elastic member 631 and the second elastic member 632 being located between the first mount 61 and the second mount 62, at least one of the first elastic member 631 and the second elastic member 632 being engageable with the first mount 61, in this embodiment, the first elastic member 631 and the second elastic member 632 being engageable with the second mount 62; the third elastic member 641 and the fourth elastic member 642 are positioned between the bracket 4 and the second mounting member 62, at least one of the third elastic member 641 and the fourth elastic member 642 may be coupled to the bracket 4, at least one of the third elastic member 641 and the fourth elastic member 642 may also be coupled to the second mounting member 62, and in this embodiment, the third elastic member 641 and the fourth elastic member 642 are coupled to the bracket 4, and the third elastic member 641 and the fourth elastic member 642 may be used to support the second mounting member 62 to keep the second mounting member 62 balanced.

Fig. 6A and 6B are perspective views of a first mounting member of an electric toothbrush in accordance with the present utility model; fig. 6C is a cross-sectional view of the first attachment of the electric toothbrush according to the present utility model, taken along the C-C plane, as seen in the left-right direction.

As shown in fig. 4, 6A-6C, the first mounting member 61 has a first receiving cavity 612, a first opening 611 facing upward, and a first bottom surface 613 facing downward, further, the first receiving cavity 612 is for receiving at least a portion of the motor 5, the first opening 611 is for exposing at least a portion of the motor 5 outward, and the first bottom surface 613 is for interacting with the first elastic member 631 and/or the second elastic member 632; the first mounting member 61 further includes a first contact portion 614 extending downward from the first bottom surface 613, the first contact portion 614 being adapted to contact the key portion 7, further, the first contact portion 614 being adapted to contact the first key 71 such that the first key 71 is activated, further, the first contact portion 614 having a first contact surface 614a facing downward, the first contact surface 614a being adapted to contact the first key 71; the first mounting member 61 further includes a connection portion 615 coupled to the second mounting member 62, for example, the connection portion 615 is a first clamping portion 615a and a second clamping portion 615b that are disposed opposite to each other, further, the first clamping portion 615a and the second clamping portion 615b may be disposed along a front-rear direction or a left-right direction, and the first clamping portion 615a and the second clamping portion 615b are configured to be coupled to the second mounting member 62 at the same time; the first mounting member 61 further includes a first coupled portion 612a adjacent to the first receiving cavity 612, where the first coupled portion 612a is configured to couple with the first coupling portion 53 of the motor 5, so that the motor 5 is mounted, and further, the first coupled portion 612a may be a cavity structure or a column/boss.

Fig. 7A and 7B are perspective views of a second mount for an electric toothbrush in accordance with the present utility model; FIG. 7C is a cross-sectional view of a second mounting member of the electric toothbrush of the present utility model, taken along the plane D-D, from front to back; fig. 7D is a cross-sectional view of the second mounting member of the electric toothbrush according to the present utility model, as seen from right to left, taken along the plane E-E.

As shown in fig. 4, 7A to 7D, the second mounting member 62 has a second receiving chamber 622, a second opening 621 facing upward and a second bottom surface 623 facing downward, further, the second receiving chamber 622 is configured to receive the first mounting member 61, the second receiving chamber 622 can also receive at least a portion of the motor 5, the second opening 621 is configured to expose at least a portion of the motor 5 outward, and the second bottom surface 623 is configured to interact with the third elastic member 641 and/or the fourth elastic member 642; the second mounting member 62 further includes a second coupling portion 624 extending downward from the second bottom surface 623, the second coupling portion 624 being for coupling with the bracket 4 such that the second mounting member 62 is mounted to the bracket 4 and swingable around a direction crossing the up-down direction, the swing axis of the second mounting member 61/the first mounting member 61/the motor 5/the brush head crossing the up-down direction, further, the second coupling portion 624 has a second coupling portion cavity 624a, the second coupling portion cavity 624a being coupled with the bracket 4, the second coupling portion 624 being optionally provided in a shaft-like structure; the second mounting member 62 further includes a connected portion 625 that mates with the connecting portion 615, for example, the connected portion 625 is a first guide groove 625a that mates with the first engaging portion 615a and a second guide groove 625b that mates with the second engaging portion 615b, further, positions of the connecting portion 615 and the connected portion 625 may be interchanged, specifically, positions of the first guide groove 625a and the first engaging portion 615a may be interchanged, positions of the second guide groove 625b and the second engaging portion 615b may be interchanged, the connecting portion 615 may be moved in an up-down direction along the connected portion 625, specifically, the first engaging portion 615a may be moved in an up-down direction along the first guide groove 625a, the second engaging portion 615b may be moved in an up-down direction along the second guide groove 625b, and the first guide groove 625a and the second guide groove 625b may cause the first mounting member 61 to be moved in an up-down direction; the second mounting member 62 further includes a second contact portion 626 extending downward from the second bottom surface 623, the second contact portion 626 being for contacting the second key 72 such that the second key 72 is actuated, further, the second contact portion 626 may also extend rearward from the second bottom surface 623; the second mounting member 62 further includes a third combining portion 628a, a fourth combining portion 628b and a fifth combining portion 627 adjacent to the second accommodating cavity 622, where the third combining portion 628a is used to combine with the second elastic member 632 so that the second elastic member 632 is positioned, the fourth combining portion 628b is used to combine with the first elastic member 631 so that the first elastic member 631 is positioned, further, the third combining portion 628a and the fourth combining portion 628b may be cavity structures connected with the second accommodating cavity 622, the third combining portion 628a and the fourth combining portion 628b may also be column structures, the second elastic member 632 may be placed inside the third combining portion 628a or sleeved on the third combining portion 628a, the first elastic member 631 may be placed inside the fourth combining portion 628b or sleeved on the fourth combining portion 628b, the fifth combining portion 627 may combine with the first key 71, in particular, the fifth combining portion 627 is located between the third combining portion and the fourth combining portion 628b, and the fifth combining portion 627 may also be a boss structure, and the fifth combining portion may be a boss structure, etc.

As shown in fig. 8, the bracket 4 includes a third opening 411, a supporting portion 412, and a spacing portion 413, further, the third opening 411 is directed upward, the supporting portion 412 is located downward, the spacing portion 413 is located between the third opening 411 and the supporting portion 412, the third opening 411 is used for exposing at least a portion of the motor 5 outward, the supporting portion 412 is used for abutting against the battery 9 to support the battery 9, the spacing portion 413 is used for being combined with the mounting assembly 6, specifically, the spacing portion 413 is used for being combined with the second mounting piece 62, the spacing portion 413 is also used for being combined with the key portion 7, specifically, the spacing portion 413 is used for being combined with the second key 72; the bracket 4 further includes a first groove 421 and a second groove 422 partitioned by a partition 413, specifically, the first groove 421 is for accommodating at least a portion of the motor 5, the first mount 61 and the second mount 62, the first groove 421 is also for accommodating the first elastic member 631, the second elastic member 632, the third elastic member 641 and the fourth elastic member 642, the second groove 422 is for accommodating the battery 9, further, the first groove 421 and the second groove 422 are disposed in an up-down direction, specifically, in the up-down direction, the first groove 421 is located above the partition 413, the first groove 421 is located below the third opening 411, the second groove 422 is located below the partition 413, and the second groove 422 is located above the support 412; the spacer 43 has an upper surface 413a facing upward, the bracket 4 further includes a second bonded portion 431 provided on the upper surface 413a, the second bonded portion 431 being for being movably bonded to the second bonded portion 624, specifically, the number of the second bonded portions 431 is one or more, in this embodiment, the number of the second bonded portions 431 is provided as two symmetrical in a direction crossing the up-down direction, further, the second bonded portions 431 are shaft-like structures mated with the second bonded portions 624, further, the second bonded portions 431 are bonded with the second bonded portion cavities 624a in the up-down direction, the second bonded portions 624 are swingable around the second bonded portions 431 in a direction crossing the up-down direction, that is, the second mounting piece 62 is swingable around the second bonded portions 431 in a direction crossing the up-down direction, further, when the second bonded portions 431 are provided in the left-right direction, the second bonded portions 624/the second mounting piece 62 is swingable around the second bonded portions 431 in the front-rear direction, the second bonded portions 431 are shaft-like structures mated with the second bonded portions 624 are provided as second shaft-like structures mated with the second bonded portions 624; the bracket 4 further includes a sixth coupling portion 441 and a seventh coupling portion 442 opposite in the front-rear direction, the sixth coupling portion 441 is configured to couple with the third elastic member 641 so that the third elastic member 641 is positioned, the seventh coupling portion 442 is configured to couple with the fourth elastic member 642 so that the fourth elastic member 642 is positioned, specifically, the sixth coupling portion 441 and the seventh coupling portion 442 may be a hollow cylinder structure or a solid cylinder structure, the third elastic member 641 may be disposed inside the sixth coupling portion 441 or sleeved on the sixth coupling portion 441, and the fourth elastic member 642 may be disposed inside the seventh coupling portion 442 or sleeved on the seventh coupling portion 442; the bracket 4 further includes a mounting portion 45 opposite to the third opening 411 in the up-down direction, the mounting portion 45 being for coupling with the bottom cover 24 to each other so that the bottom cover 24 is mounted.

FIG. 9 is a perspective view of an electric toothbrush holder assembly in accordance with the present utility model; FIG. 10A is a cross-sectional view of the electric toothbrush of the present utility model, taken along the A-A plane, looking back and forth; FIG. 10B is an enlarged schematic view of portion A of FIG. 10A;

FIG. 11A is a cross-sectional view of a hidden portion of the electric toothbrush of the present utility model, taken along the plane B-B, looking right to left; fig. 11B is an enlarged schematic view of a portion B in fig. 11A.

As shown in fig. 2 and 9, 10A and 10B, and 11A and 11B, in this embodiment, the motor 5 is combined with the first mounting member 61, the first mounting member 61 is mounted on the second mounting member 62, and the second mounting member 62 is combined with the bracket 4, wherein a first elastic member 631 and a second elastic member 632 are disposed between the first mounting member 61 and the second mounting member 62, when the brush head is subjected to excessive downward pressure, the motor 5 drives the first mounting member 61 to move downward along the first guide groove 625a and the second guide groove 625B simultaneously under the action of the pressure, so that the first mounting member 61 triggers the first key 71, and further, the buzzer 32 emits a sound to remind the user that the pressure to which the electric toothbrush 100 is subjected at this time is excessive, and meanwhile, before the user adjusts the pressure, the control board 3 controls the brush head to reduce the vibration frequency or the vibration amplitude to protect the oral cavity; when the brush head is not stressed or stressed is reduced, the first mounting piece 61 drives the motor 5 to move upwards along the first guide groove 625a and the second guide groove 625b under the elastic action of the first elastic piece 631 and the second elastic piece 632, and returns to the initial position when the brush head is not stressed any more, so that the first mounting piece 61 leaves the first key 71, and at the moment, the buzzer 32 stops working. In other embodiments, the motor 5 and the brush head can move relatively in the up-down direction, and the brush head can directly drive the mounting assembly 6 after receiving the force in the up-down direction, so as to trigger the button portion 7, and make the buzzer 32 emit a sound prompt.

The third elastic element 641 and the fourth elastic element 642 are arranged between the second mounting element 62 and the spacing part 413/the bracket 4, when the brush head is subjected to excessive lateral force, the second mounting element 62 can swing in the front-back direction, so that the motor 5 simultaneously pushes the first mounting element 61 and the second mounting element 62 to swing backwards under the action of the lateral force, the second contact part 626 triggers the second key 72, the buzzer 32 is further made to make a sound, so that the user is reminded that the pressure applied by the electric toothbrush 100 is excessive at the moment, and meanwhile, before the user adjusts the pressure, the control board 3 controls the brush head to reduce the vibration frequency or the vibration amplitude to protect the oral cavity; when the brush head is not stressed or stressed to be reduced, the second mounting piece 62 drives the first mounting piece 61 and the motor 5 to swing forwards under the elastic force of the third elastic piece 641, and returns to the initial position when the brush head is not stressed any more, and meanwhile, the second mounting piece 62 is kept balanced under the supporting action of the third elastic piece 641 and the fourth elastic piece 642, so that the second mounting piece 62 leaves the second key 72, and at the moment, the buzzer 32 stops working.

Claims

1. A bracket assembly is arranged on an electric toothbrush and used for being combined with a motor in the electric toothbrush, and is characterized in that,

the mounting assembly can move up and down; or,

the mounting assembly is movable in an up-down direction and swingable about a direction intersecting the up-down direction.

2. The bracket assembly of claim 1, wherein the mounting assembly includes a first mounting member and a second mounting member coupled to each other, the first mounting member coupled to the motor and the second mounting member coupled to the bracket.

3. A bracket assembly according to claim 2, further comprising at least one of first and second elastic members opposing in the left-right direction and at least one of third and fourth elastic members opposing in the front-rear direction, the first and second elastic members being for coupling with the second mount or the first mount, the third and fourth elastic members being for coupling with the bracket or the second mount.

4. A bracket assembly according to claim 3, further comprising a key portion, the key portion comprising a first key and a second key, the first key being coupled to the second mounting member and the second key being coupled to the bracket.

5. The bracket assembly of claim 4, wherein the first mounting member has a first receiving cavity, a first opening and a first bottom surface, the first receiving cavity receiving at least a portion of the motor, the first opening being upwardly directed for exposing at least a portion of the motor outwardly, the first bottom surface being downwardly directed for interacting with the first resilient member and/or the second resilient member.

6. The bracket assembly of claim 5, wherein the first mounting member further comprises a connecting portion coupled to the second mounting member and a first contact portion extending downwardly from the first bottom surface, the connecting portion coupled to the second mounting member, the first contact portion configured to activate the first key.

7. A bracket assembly according to claim 6, wherein the second mounting member has a second receiving cavity for receiving the first mounting member, a second opening facing upwardly, and a second bottom surface facing downwardly for interaction with the third and/or fourth resilient member.

8. The bracket assembly of claim 7, wherein the second mounting member further comprises a connected portion for engaging with the connecting portion, a second contact portion extending downward from the second bottom surface, and a coupling portion extending downward from the second bottom surface, the connecting portion being movable in an up-down direction along the connected portion, the second contact portion being for activating the second key, the coupling portion being for coupling with the bracket.

9. The bracket assembly of claim 8, wherein the bracket includes a third opening, a spacer movably coupled to the second mounting member, and a recess below the third opening in the up-down direction, the recess above the spacer;

10. An electric toothbrush at least comprises a brush head and a brush handle which are mutually combined, wherein the brush head is detachably arranged on the brush handle, the interior of the brush handle is of a cavity structure, and is characterized in that,

the mounting assembly can move up and down; or,