Electric toothbrush

Abstract

The utility model relates to the field of toothbrushes, and discloses an electric toothbrush which comprises a shell and a motor. A first containing space is formed in the shell, the shell extends in the first direction and is provided with a first end and a second end, the end face, away from the second end, of the first end is provided with a connecting port allowing the toothbrush head to penetrate through, the end face, away from the first end, of the second end is provided with a mounting port allowing the motor to penetrate through, and the connecting port and the mounting port are both communicated with the first containing space; the motor is arranged in the first containing space and comprises an output end which is rotatably arranged and faces the connecting opening, the output end does not protrude out of the end face, away from the second end, of the first end in the first direction, and a connecting hole is formed in the end face, close to the connecting opening, of the output end and used for being fixedly connected with a toothbrush head in an inserted mode. According to the electric toothbrush, the output end is arranged in the shell, the toothbrush head can be inserted and fixed, the output end does not need to protrude out of the shell to connect and fix the toothbrush head, and therefore the portability of the electric toothbrush can be improved, and the output end can be prevented from damaging surrounding objects in the carrying process.

Description

TECHNICAL FIELD

[0001] The utility model relates to toothbrush technical field, concretely relates to electric toothbrush. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living standards, personal care products are also constantly progressing, among which electric toothbrushes are favored by more and more consumers due to their efficient cleaning effect.

[0003] In the related art, the output shaft of the motor of the electric toothbrush usually protrudes outside the toothbrush shell. Such a design is mainly to facilitate users to replace different toothbrush heads to meet different needs of oral care. However, this design also brings some inconvenience.

[0004] Firstly, the output shaft of the motor increases the total length of the entire toothbrush, making the electric toothbrush not easy to carry when traveling or going out, especially when it needs to be put into a suitcase or a handbag, its volume is particularly bulky. Secondly, the output shaft of the motor may cause damage to surrounding articles if placed improperly, such as scratching or bumping the surface of other precision electronic products, especially the screens of smart phones and tablets. SUMMARY

[0005] Therefore, the utility model provides an electric toothbrush to solve or improve the problem that the output shaft of the motor causes the total length of the toothbrush to be relatively long.

[0006] In a first aspect, the utility model provides an electric toothbrush, comprising a shell and a motor;

[0007] Among them, the inside of the shell is provided with a first containing space, the shell extends along the first direction, and has a first end and a second end in the first direction, the end face of the first end away from the second end is provided with a connecting port for the toothbrush head to pass through, the end face of the second end away from the first end is provided with a mounting port for the motor to pass through, and the connecting port and the mounting port are in communication with the first containing space;

[0008] The motor is arranged in the first containing space, the motor includes an output end which is rotatably arranged and faces the connecting port, along the first direction, the output end does not protrude from the end face of the first end away from the second end, and a connecting hole is arranged on the end face of the output end close to the connecting port, the connecting hole is used for plug-in fixing with the toothbrush head.

[0009] In an optional embodiment, the electric toothbrush further comprises a sealing member, the sealing member is sleeved on the output end, and the sealing member abuts against the inner wall of the shell.

[0010] In an alternative embodiment, the sealing member comprises a first sleeve and a second sleeve, the first sleeve is sleeved on the output end, the second sleeve is arranged on the side of the first sleeve away from the output end and abuts against the inner wall of the shell, and the first sleeve and the second sleeve are tightly connected at the end close to the connecting port;

[0011] The electric toothbrush further comprises a connecting seat, one end of the connecting seat is connected with the motor in the first direction, and the other end of the connecting seat is arranged between the first sleeve and the second sleeve and abuts against the second sleeve.

[0012] In an alternative embodiment, the electric toothbrush further comprises a first buffer member, the first buffer member is arranged in a sleeve structure, the first buffer member is sleeved on the end of the motor close to the connecting port, and the connecting seat is sleeved on the first buffer member;

[0013] And / or, the electric toothbrush further comprises a second buffer member, the second buffer member is arranged in a sleeve structure, the second buffer member is sleeved on the end of the motor away from the connecting port, and the second buffer member abuts against the inner wall of the shell.

[0014] In an alternative embodiment, the electric toothbrush further comprises:

[0015] A mounting seat is arranged in the first accommodating space, and the mounting seat is located on the side of the motor away from the connecting port, and a second accommodating space is arranged in the mounting seat;

[0016] A battery is arranged in the second accommodating space, and the battery is electrically connected with the motor.

[0017] In an alternative embodiment, a first clamping part is arranged on the inner wall of the shell opposite to the mounting seat, a first limiting part is arranged on the mounting seat, and the first clamping part is used for limiting the first limiting part in the circumferential direction of the shell;

[0018] And / or, a clamping arm is arranged between the mounting seat and the shell in a second direction, the second direction intersects the first direction, the clamping arm extends in the first direction, one end of the clamping arm close to the connecting port is connected with the mounting seat, the clamping arm away from the connecting port has a spacing between the mounting seat and the end of the clamping arm away from the connecting port, the end of the clamping arm away from the connecting port does not protrude from the end face of the mounting seat away from the connecting port, a second limiting part is arranged on the surface of the clamping arm away from the mounting seat, and a second clamping part is arranged on the shell, and the second clamping part is used for limiting the second limiting part in the first direction.

[0019] In an alternative implementation, the mounting base is provided with a clearance hole between the battery and the end of the clamping arm away from the connecting port;

[0020] In an alternative implementation, the electric toothbrush further comprises a tail cover, the tail cover is sealed to the mounting port, the tail cover is connected to the shell, the tail cover is provided with a plug-in part at the end close to the battery, and the plug-in part is arranged on the side of the clamping arm close to the battery.

[0021] In an alternative implementation, the hole wall of the connecting hole is provided with a first limiting structure, the toothbrush head is provided with a first matching structure, and the first limiting structure is used to limit the first matching structure in the circumferential direction of the connecting hole;

[0022] In an alternative implementation, the hole wall of the connecting hole is provided with a second limiting structure, the toothbrush head is provided with a second matching structure, and the second limiting structure is used to limit the second matching structure in the axial direction of the connecting hole.

[0023] In an alternative implementation, the toothbrush head comprises a brush disc, a rod body and a mandrel, the rod body is a tubular structure, the rod body is sleeved on the mandrel and is used to mount the brush disc, and the rod body is used to be inserted into the connecting hole;

[0024] The second limiting structure is a first groove, the second matching structure is a first protrusion provided on the surface of the rod body away from the mandrel, the rod body is provided with at least two through grooves penetrating the side wall of the rod body in the wall thickness direction of the rod body, the first protrusion is arranged between two adjacent through grooves, and the surface of the mandrel facing the first protrusion is provided with a second groove.

[0025] In an alternative implementation, the first limiting structure is a second protrusion provided on the hole wall of the connecting hole, the toothbrush head comprises a rod body used to mount a brush disc, the rod body is used to be inserted into the connecting hole, the first matching structure is a first recess provided on the side wall of the rod body, and the first recess extends to the end face of the rod body away from the brush disc in the axial direction of the rod body.

[0026] In an alternative implementation, the electric toothbrush further comprises a circuit board, the circuit board is arranged in the first accommodating space, the circuit board is electrically connected to the motor, and the circuit board is provided with an operation button;

[0027] The shell is provided with a second recess, the wall thickness of the position where the second recess is located on the shell is smaller than the wall thickness of other positions on the shell, and the second recess is arranged opposite to the operation button.

[0028] In an alternative embodiment, the motor comprises:

[0029] a support having an accommodating cavity inside, the support having an output hole at one end close to the connecting port, the output hole being in communication with the accommodating cavity;

[0030] a stator assembly arranged in the accommodating cavity;

[0031] a rotor assembly rotatably connected with the support, at least part of the rotor assembly being arranged in the accommodating cavity, the rotor assembly having an output end at one end close to the connecting port in the first direction;

[0032] wherein the rotor assembly passes through the output hole, and the output end is arranged outside the accommodating cavity, or the output end is arranged in the accommodating cavity, and the toothbrush head passes through the output hole and is inserted into the connecting hole.

[0033] In an alternative embodiment, the rotor assembly comprises a rotating shaft, the rotating shaft comprising a first shaft segment and a second shaft segment, the first shaft segment and the second shaft segment both extending in the first direction, and one end of the first shaft segment being connected with one end of the second shaft segment;

[0034] wherein the first shaft segment is rotatably connected with the support, the connecting hole is arranged on the end face of the second shaft segment away from the first shaft segment, and the diameter of the second shaft segment is greater than the diameter of the first shaft segment.

[0035] In an alternative embodiment, the rotor assembly comprises a rotating shaft and a magnet structure, the rotating shaft being rotatably connected with the support, and the magnet structure being connected with the rotating shaft;

[0036] the stator assembly comprising an iron core and a coil, the iron core being connected with the support, and the coil being arranged on the iron core and being arranged opposite to the magnet structure.

[0037] The electric toothbrush provided by the utility model has the connecting hole arranged at the output end, so that the output end is arranged in the shell, the toothbrush head can be inserted and fixed, and the toothbrush head does not need to be connected and fixed by protruding out of the shell, so that the output end does not need to protrude out of the shell, the size of the electric toothbrush in the axial direction is shortened, the portability of the electric toothbrush is improved, and the output end can avoid damaging surrounding articles during carrying. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0039] Figure 1 The front view of the motor provided in the embodiments of the present application is shown in the drawings.

[0040] Figure 2 The front view of the motor provided in the embodiments of the present application is shown in the drawings. Figure 1 The A-A sectional view in the view shown in the drawings.

[0041] Figure 3 The B-B sectional view in the view shown in the drawings. Figure 2 The A-A sectional view in the view shown in the drawings.

[0042] Figure 4 The isometric view of the motor shown in the drawings. Figure 1 The A-A sectional view in the view shown in the drawings.

[0043] Figure 5 The exploded structure view of the motor provided in the embodiments of the present application is shown in the drawings.

[0044] Figure 6 The structure schematic view of the rotor assembly provided in the embodiments of the present application is shown in the drawings.

[0045] Figure 7 The structure schematic view of the stator assembly provided in the embodiments of the present application is shown in the drawings.

[0046] Figure 8 The structure schematic view of the end cover provided in the embodiments of the present application is shown in the drawings.

[0047] Figure 9 The other angle schematic view of the end cover shown in the drawings. Figure 8 The other angle schematic view of the end cover shown in the drawings.

[0048] Figure 10 The exploded structure view of the electric toothbrush provided in the embodiments of the present application is shown in the drawings.

[0049] Figure 11 The sectional view of the electric toothbrush provided in the embodiments of the present application is shown in the drawings.

[0050] Figure 12 The C-C sectional view in the view shown in the drawings. Figure 11 The C-C sectional view in the view shown in the drawings.

[0051] Figure 13 The local enlarged view at I in the view shown in the drawings. Figure 11 The local enlarged view at I in the view shown in the drawings.

[0052] Figure 14For Figure 11 Enlarged view of II in the view shown;

[0053] Figure 15 For the structure schematic view of the first buffer piece and the second buffer piece installed in the motor in the embodiment of the utility model;

[0054] Figure 16 For the structure schematic view of the mounting seat provided in the embodiment of the utility model;

[0055] Figure 17 For the connection relation schematic view of the rod body and the mandrel provided in the embodiment of the utility model;

[0056] Figure 18 For the structure explosion view of the toothbrush head provided in the embodiment of the utility model;

[0057] Figure 19 For the structure schematic view of the toothbrush head and the output end in axial positioning provided in the embodiment of the utility model;

[0058] Figure 20 For the structure schematic view of the toothbrush head and the output end in circumferential positioning provided in the embodiment of the utility model;

[0059] Figure 21 For the structure schematic view of the sealing piece provided in the embodiment of the utility model;

[0060] Figure 22 For the structure schematic view of the electric toothbrush provided in the embodiment of the utility model.

[0061] Explanation of reference signs:

[0062] 100, motor; 1, support; 101, casing; 102, end cover; 102a, cover body; 102b, plug-in part; 102c, limiting block; 102d, arc-shaped slot; 102e, first through slot; 102f, second through slot; 103, accommodating cavity; 104, output hole; 2, stator assembly; 201, core; 201a, protruding part; 202, coil; 203, limiting piece; 3, rotor assembly; 301, output end; 302, connecting hole; 303, first limiting structure; 304, second limiting structure; 305, rotating shaft; 305a, first shaft segment; 305b, second shaft segment; 306, magnet; 307, mounting seat; 307a, mounting groove; 4, bearing; 5, outer shell; 501, first end; 502, second end; 503, first accommodating space; 504, connecting port; 505, mounting port; 506, first clamping part; 507, second clamping part; 508, second recess; 6, sealing piece; 601, first sleeve body; 602, second sleeve body; 7, fixing seat; 701, second accommodating space; 702, first limiting part; 703, clamping arm; 704, second limiting part; 705, avoiding hole; 8, toothbrush head; 801, first matching structure; 802, second matching structure; 803, rod body; 804, mandrel; 805, brush disc; 806, through slot; 807, second groove; 9, connecting seat; 10, circuit board; 1011, operation button; 11, first buffer piece; 12, second buffer piece; 13, battery; 14, tail cover; 1401, plug-in part; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0064] The embodiments of the utility model will be described in combination with Figures 1 to 22 The embodiments of the utility model.

[0065] Specifically, the electric toothbrush comprises an outer shell 5 and a motor 100.

[0066] The first accommodating space 503 is arranged inside the shell 5. The shell 5 extends along a first direction X, and along the first direction X, the shell 5 has a first end 501 and a second end 502. For example, the first direction X is an axial direction of the electric toothbrush. The first end 501 is provided with a connecting port 504 at an end surface away from the second end 502, and the connecting port 504 is configured to allow the toothbrush head 8 to pass through. The second end 502 is provided with a mounting port 505 at an end surface away from the first end 501, and the mounting port 505 is configured to allow the motor 100 to pass through. The connecting port 504 and the mounting port 505 are in communication with the first accommodating space 503, so that the toothbrush head 8 can pass through the connecting port 504 and extend into the first accommodating space 503, and the motor 100 can pass through the mounting port 505 and enter or exit the first accommodating space 503.

[0067] The motor 100 is arranged in the first accommodating space 503. The motor 100 includes a rotatable output end 301, and the output end 301 faces the connecting port 504. Along the first direction X, the output end 301 does not protrude from the end surface of the first end 501 away from the second end 502, or alternatively, along the first direction X, the output end 301 is flush with the end surface of the first end 501 away from the second end 502, or the output end 301 is completely arranged in the first accommodating space 503.

[0068] The output end 301 is provided with a connecting hole 302 at an end surface close to the connecting port 504. The connecting hole 302 is configured to be inserted and fixed with the toothbrush head 8. For example, the connecting hole 302 is snap-fitted with the toothbrush head 8.

[0069] In this embodiment, the motor 100 can be arranged in the first accommodating space 503 of the shell 5 through the mounting port 505, and the output end 301 of the motor 100 does not protrude from the shell 5. When the toothbrush head 8 is installed, the toothbrush head 8 can be inserted into the connecting port 504 of the shell 5 and inserted and fixed with the connecting hole 302 of the output end 301. During tooth cleaning, the toothbrush head 8 is driven to rotate by the motor 100 to clean the teeth.

[0070] In this way, since the output end 301 is provided with the connecting hole 302, the output end 301 is arranged in the shell 5, and the toothbrush head 8 can be inserted and fixed without the need to protrude the output end 301 from the shell 5 to be connected and fixed with the toothbrush head 8, so that the output end 301 does not need to protrude from the shell 5, thereby shortening the size of the electric toothbrush in the axial direction, improving the portability of the electric toothbrush, and avoiding damage to surrounding objects by the output end 301 during carrying.

[0071] Reference Figure 10 , Figure 11 and Figure 13 In some embodiments of the present application, the electric toothbrush further includes a sealing member 6.

[0072] The sealing element 6 is fitted onto the output end 301, and the sealing element 6 abuts against the inner wall of the outer casing 5.

[0073] In this embodiment, by providing a sealing element 6 between the output end 301 and the inner wall of the housing 5, the gap between the output end 301 and the housing 5 can be sealed, preventing water stains or foam from entering the housing 5 from the gap between the output end 301 and the housing 5 and causing damage to the motor 100 or the circuit board 10.

[0074] refer to Figure 13 and Figure 21 As shown, in some embodiments provided by this utility model, the sealing element 6 includes a first body 601 and a second body 602.

[0075] The first body 601 is fitted onto the output end 301 and rotates in conjunction with it. The second body 602 is located on the side of the first body 601 away from the output end 301 and abuts against the inner wall of the outer casing 5, that is, the second body 602 is fitted onto the outside of the first body 601.

[0076] The first set 601 and the second set 602 are sealed together at the ends near the connection port 504. For example, there is a gap between the first set 601 and the second set 602, and the ends of the first set 601 and the second set 602 near the connection port 504 are connected by a ring structure. For example, the first set 601, the second set 602 and the ring structure are set as an integrally formed structure.

[0077] The electric toothbrush also includes a connector 9. In the first direction X, one end of the connector 9 is connected to the motor 100, and the other end of the connector 9 is located between the first sleeve 601 and the second sleeve 602, and abuts against the second sleeve 602.

[0078] In this embodiment, the first sleeve 601 is sleeved on the output end 301, thereby forming a sealed structure with the output end 301. The second sleeve 602 abuts against the inner wall of the outer shell 5, thereby forming a sealed structure with the outer shell 5. The first sleeve 601 and the second sleeve 602 are tightly connected, so that the first sleeve 601 and the second sleeve 602 work together to seal the gap between the output end 301 and the outer shell 5.

[0079] By abutting against the connecting seat 9, the second sleeve 602 can be clamped between the connecting seat 9 and the inner wall of the outer casing 5, allowing the second sleeve 602 to make tight contact with the outer casing 5 and improving the sealing effect between the second sleeve 602 and the outer casing 5. Furthermore, the clamping force on the second sleeve 602 is provided by the connecting seat 9, and does not need to be provided by the output end 301. Therefore, the resistance effect of the sealing element 6 on the output end 301 is smaller, making the motor 100 rotate more smoothly.

[0080] Optionally, the sealing member 6 is made of rubber or silica gel.

[0081] Optionally, as shown in Figures 10-11 In the direction from the second end 502 to the first end 501, the cross section of the first end 501 is reduced, so that the first end 501 forms a necked structure. In this way, on the one hand, the motor 100 can be prevented from being pulled out of the connecting port, and on the other hand, when the connecting seat 9 moves in the first direction, the gap between the connecting seat 9 and the inner wall of the necked structure becomes smaller, so that the second sleeve body 602 can be pressed against the inner wall of the necked structure.

[0082] Optionally, the necked structure can be formed by a die necking and spinning process.

[0083] Optionally, as shown in Figure 10 、 Figure 11 and Figure 15 In some embodiments provided by the utility model, the electric toothbrush further comprises a first buffer member 11.

[0084] The first buffer member 11 is in a sleeve structure, and is sleeved on one end of the motor 100 close to the connecting port 504. Correspondingly, the connecting seat 9 is also in a sleeve structure, and is sleeved on the first buffer member 11.

[0085] In this embodiment, by arranging the first buffer member 11 between the motor 100 and the connecting seat 9, the first buffer member 11 can play a role of buffering and absorbing shock. In this way, on the one hand, the vibration transmitted by the motor 100 to the shell 5 through the connecting seat 9 can be reduced, so that the user can hold the shell 5 to clean teeth more comfortably. On the other hand, when the electric toothbrush falls, the first buffer member 11 can reduce the impact on the motor 100, and reduce the probability of damage to the motor 100.

[0086] Optionally, the first buffer member 11 is made of rubber or silica gel.

[0087] Optionally, as shown in Figure 10 and Figure 15 In the first direction X, one end of the connecting seat 9 close to the motor 100 is provided with a plug-in block extending towards the motor 100, and the first buffer member 11 is provided with a plug-in slot for the plug-in block, the plug-in slot being used for limiting the plug-in block in the circumferential direction of the motor 100. In this way, the fixing effect of the motor 100 can be improved, and the overall rotation displacement of the motor 100 can be avoided.

[0088] Optionally, as shown in Figure 10 、 Figure 11 and Figure 15 The electric toothbrush further comprises a second buffer member 12.

[0089] The second buffering member 12 is provided in a sleeve structure, and is sleeved on the motor 100 away from the connecting port 504, and abuts against the inner wall of the shell 5.

[0090] In the embodiment, the second buffering member 12 is arranged between the motor 100 and the shell 5, and can buffer and absorb the shock, so that the shock transmitted from the motor 100 to the shell 5 is reduced, and the user can hold the shell 5 to clean the teeth more comfortably. In addition, when the electric toothbrush falls, the second buffering member can reduce the impact on the motor 100, and reduce the probability of damage of the motor 100.

[0091] In addition, the first buffering member 11 and the second buffering member 12 are arranged at two ends of the motor 100 respectively, so that the motor 100 and the shell 5 are not in direct contact, and the shock transmission between the motor 100 and the shell 5 is reduced.

[0092] Optionally, the second buffering member 12 is provided as a rubber member or a silica gel member.

[0093] Reference Figure 10 , Figure 11 and Figure 16 In some embodiments of the utility model, the electric toothbrush further comprises a fixing seat 7 and a battery 13.

[0094] The fixing seat 7 is arranged in the first accommodating space 503, and is located on the side of the motor 100 away from the connecting port 504. The fixing seat 7 is internally provided with a second accommodating space 701. Optionally, the side wall or the end portion of the fixing seat 7 is provided with an access opening for the battery 13 to enter and exit.

[0095] The battery 13 is arranged in the second accommodating space 701 of the fixing seat 7, and is electrically connected with the motor 100 to supply power for the motor 100.

[0096] In the embodiment, the battery 13 is electrically connected with the motor 100, so that the electric toothbrush can be used without external power supply. The battery 13 is arranged in the fixing seat 7, so that the connecting structure can be arranged on the fixing seat 7 to be connected with the shell 5, so that the battery 13 is installed and fixed by the fixing seat 7 to prevent displacement. In addition, the battery 13 can be protected by the fixing seat 7 to reduce the impact and shock received by the battery 13.

[0097] Optionally, the fixing seat 7 abuts against the second buffering member 12, so as to limit the motor 100 in the first direction X to prevent displacement of the motor 100 in the first direction X.

[0098] Reference Figure 11 , Figure 12 and Figure 16As shown, in some embodiments provided by the utility model, the first clamping part 506 is arranged on the inner wall opposite to the fixing base 7 of the shell 5. The first limiting part 702 is arranged on the fixing base 7, and the first clamping part 506 is used for limiting the first limiting part 702 in the circumferential direction of the shell 5.

[0099] In the embodiment, the first clamping part 506 on the shell 5 is used for circumferentially limiting the first limiting part 702, which can prevent the fixing base 7 from rotating in the interior of the shell 5, so that the stability of the fixing base 7 in the interior of the shell 5 is higher.

[0100] Optionally, the number of the first clamping part 506 is at least two, the at least two first clamping parts 506 are arranged in the circumferential direction of the shell 5, and the first limiting part 702 is limited and matched with the first clamping part 506 one by one. In this way, the fixing base 7 can be provided with better circumferential limiting effect, and the stress of the fixing base 7 is balanced.

[0101] Optionally, referring to Figure 12 As shown, the first clamping part 506 includes two convex ribs, both of which extend along the first direction X and have a spacing between the two convex ribs in the circumferential direction of the shell 5. The first clamping part 506 includes a limiting protrusion arranged between the two convex ribs. In the process of placing the fixing base 7 into the interior of the shell 5 from the mounting port 505, the limiting protrusion is placed between the two convex ribs, so that the two convex ribs limit the limiting protrusion.

[0102] Optionally, the shell 5 is an aluminum shell, and the shell can be processed by a pultrusion process. In this way, the convex ribs can be directly processed in the process of pulling the shell.

[0103] Of course, the first clamping part 506 and the first limiting part 702 can be interchanged in structure, that is, the first limiting part 702 includes two convex ribs, and the first clamping part 506 includes a limiting protrusion.

[0104] Referring to Figure 11 , Figure 14 and Figure 16 As shown, in some embodiments provided by the utility model, the clamping arm 703 is arranged between the fixing base 7 and the shell 5 along the second direction Y. The second direction Y intersects the first direction X, for example, the two directions are perpendicular.

[0105] The clamping arm 703 extends along the first direction X, one end of the clamping arm 703 close to the connecting port 504 is connected with the fixing base 7, and the clamping arm 703 has a spacing between the other end of the clamping arm 703 away from the connecting port 504 and the fixing base 7, so that the other end of the clamping arm 703 away from the connecting port 504 can swing and deform along the second direction Y. Referring to Figure 16As shown, the end of the clamping arm 703 away from the connecting port 504 does not protrude from the end surface of the fixing seat 7 in the first direction X.

[0106] The surface of the clamping arm 703 away from the fixing seat 7 is provided with a second limiting portion 704, and the inner wall of the shell 5 facing the clamping arm 703 is provided with a second clamping portion 507. The second clamping portion 507 is used to limit the second limiting portion 704 in the first direction X.

[0107] In this embodiment, by arranging the clamping arm 703 between the fixing seat 7 and the shell 5, and arranging the second limiting portion 704 on the clamping arm 703, the second limiting portion 704 can be limited and matched with the second clamping portion 507 on the shell 5, which can prevent the fixing seat 7 from moving in the first direction X in the shell 5, thereby ensuring the stability of the fixing seat 7 in the shell 5.

[0108] By arranging the clamping arm 703, the clamping arm 703 can be swung and deformed in the second direction Y. During the installation of the fixing seat 7, the second limiting portion 704 abuts against the inner wall of the shell, and the clamping arm 703 swings and deforms towards the direction close to the battery, so as to facilitate the installation of the fixing seat 7 in the shell. After the fixing seat 7 is installed in place, the clamping arm 703 restores the deformation, so that the second limiting portion 704 on the clamping arm 703 is clamped and matched with the second clamping portion 507 of the shell 5.

[0109] By making the clamping arm 703 not protrude from the end surface of the fixing seat 7, the space of the fixing seat 7 in the second direction Y can be fully utilized to arrange the clamping arm 703, so that the size of the fixing seat 7 in the first direction X is more compact, and the size of the electric toothbrush in the first direction X is further shortened, and the portability of the electric toothbrush is improved.

[0110] Optionally, referring to Figure 14 As shown, the second limiting portion 704 is arranged as a limiting protrusion, and the second clamping portion 507 is arranged as a clamping groove.

[0111] Optionally, the number of clamping arms 703 is at least two, and the at least two clamping arms 703 are sequentially distributed along the circumference of the fixing seat 7.

[0112] Optionally, referring to Figure 14 and Figure 16 As shown, in some embodiments of the utility model, the fixing seat 7 is provided with a avoiding hole 705, and the avoiding hole 705 is arranged between the battery 13 and the end of the clamping arm 703 away from the connecting port 504.

[0113] In the embodiment, the avoiding hole 705 is arranged between the clamping arm 703 and the battery 13, and the avoiding hole 705 can avoid the clamping arm 703 during the swinging deformation of the clamping arm 703 in the second direction Y, so that the clamping arm 703 can be arranged closer to the fixed seat 7, thereby reducing the size of the clamping arm 703 protruding from the fixed seat 7 in the second direction Y, further reducing the radial size of the electric toothbrush, and improving the portability of the electric toothbrush.

[0114] Referring to Figure 11 and Figure 14 In some embodiments of the utility model, the electric toothbrush further comprises a tail cover 14.

[0115] The tail cover 14 is arranged in the mounting hole 505, and the tail cover 14 is connected with the shell 5. One end of the tail cover 14 close to the battery 13 is provided with a plug-in part 1401, and the plug-in part 1401 is arranged on one side of the clamping arm 703 close to the battery 13.

[0116] In the embodiment, the tail cover 14 seals the mounting hole 505, which can seal the mounting hole 505 and prevent impurities from entering the shell 5, and can limit the fixed seat 7 in the first direction X, further improving the stability of the fixed seat 7 in the shell 5.

[0117] The plug-in part 1401 is arranged on the tail cover 14, and the plug-in part 1401 is arranged on one side of the clamping arm 703 close to the battery 13, which can limit the clamping arm 703 in the second direction Y, prevent the clamping arm 703 from deforming in the second direction Y, and make the second limiting part 704 and the second clamping part 507 always limit and cooperate.

[0118] For example, when the electric toothbrush falls to the ground or is impacted or vibrated, the plug-in part 1401 can limit the deformation of the clamping arm 703, so that the second limiting part 704 and the second clamping part 507 limit and cooperate, avoid the second limiting part 704 and the second clamping part 507 from being separated, and cause the battery 13 to be loose, thereby improving the stability of the electric toothbrush.

[0119] Optionally, the tail cover 14 can be connected with the shell 5 through a buckle structure, or the tail cover 14 can be connected with the shell 5 through a threaded fastener.

[0120] Referring to Figure 4 、 Figure 6 and Figure 20 In some embodiments of the utility model, a first limiting structure 303 is arranged on the hole wall of the connecting hole 302.

[0121] The first cooperation structure 801 is arranged on the toothbrush head 8, and the first limiting structure 303 is used for limiting the first cooperation structure 801 in the circumferential direction of the connecting hole 302.

[0122] In the embodiment, the first limiting structure 303 is arranged on the hole wall of the connecting hole 302, so that the toothbrush head 8 is limited in the circumferential direction of the connecting hole 302, rotation of the toothbrush head 8 relative to the connecting hole 302 is prevented, the toothbrush head 8 can stably rotate synchronously with the output end 301, and the cleaning effect of the toothbrush head 8 is ensured.

[0123] Referring to Figure 4 and Figure 6 , in some embodiments of the utility model, the first limiting structure 303 is a second protrusion arranged on the hole wall of the connecting hole 302. For example, in the first direction X, one end of the second protrusion is connected with the hole bottom of the connecting hole 302, and the other end of the second protrusion extends to the hole opening of the connecting hole 302.

[0124] The toothbrush head 8 comprises a rod body 803 for mounting a brush disc 805, and the rod body 803 is used for being inserted into the connecting hole 302. The first cooperation structure 801 is a first recess arranged on the side wall of the rod body 803, and the first recess extends to the end face of the rod body 803 away from the brush disc 805 in the axial direction of the rod body 803. The second cooperation structure 802 is arranged on the rod body 803.

[0125] In the embodiment, in the process of inserting the rod body 803 of the toothbrush head 8 into the connecting hole 302, the first recess on the rod body 803 abuts against the second protrusion on the hole wall of the connecting hole 302, so that the limiting cooperation in the circumferential direction of the connecting hole 302 is formed.

[0126] Optionally, as shown in Figure 4 or Figure 6 , one end of the second protrusion close to the center of the connecting hole 302 is arranged as a plane, and correspondingly, the first recess can be formed by flattening the rod body 803, that is, the flattened part on the rod body 803 abuts against the surface of the second protrusion structure close to the center of the connecting hole 302, so that the circumferential positioning effect of the toothbrush head 8 is formed.

[0127] Referring to Figure 4 , Figure 6 and Figure 19 , in some embodiments of the utility model, the hole wall of the connecting hole 302 is provided with a second limiting structure 304.

[0128] The second cooperation structure 802 is arranged on the toothbrush head 8, and the second limiting structure 304 is used for limiting the second cooperation structure 802 in the axial direction of the connecting hole 302.

[0129] In the embodiment, the second limiting structure 304 is arranged on the hole wall of the connecting hole 302, so that the toothbrush head 8 is limited in the axial direction of the connecting hole 302, the axial movement of the toothbrush head 8 relative to the connecting hole 302 is prevented, the toothbrush head 8 is prevented from being separated from the connecting hole 302, and the stability of the connection between the toothbrush head 8 and the connecting hole 302 is ensured.

[0130] Referring to Figure 17 , Figure 18 and Figure 19 In some embodiments of the utility model, the toothbrush head 8 comprises a brush disc 805, a rod body 803 and a mandrel 804.

[0131] The rod body 803 is a tubular structure, the rod body 803 is sleeved on the mandrel 804, and the rod body 803 is used for being inserted into the connecting hole 302. The rod body 803 is used for mounting the brush disc 805, for example, the brush disc 805 is provided with a tubular structure for inserting the rod body 803, the rod body 803 is arranged in the tubular structure, and the rod body 803 is clamped and matched with the tubular structure.

[0132] The second limiting structure 304 is a first recess, and the second matching structure 802 is a first protrusion arranged on the surface of the rod body 803 away from the mandrel 804, and the first protrusion is used for being clamped into the first recess. Similarly, the first matching structure 801 can also be arranged on the rod body 803.

[0133] The rod body 803 is provided with at least two through grooves 806, the through grooves 806 penetrate the side wall of the rod body 803 along the wall thickness direction of the rod body 803, and the first protrusion is arranged between the two adjacent through grooves 806. The surface of the mandrel 804 towards the first protrusion is provided with a second recess 807.

[0134] In the embodiment, when the toothbrush head 8 is installed, the rod body 803 is inserted into the connecting hole 302, and the first protrusion is clamped into the first recess.

[0135] By arranging the rod body 803 as a tubular structure and arranging the first protrusion between the two adjacent through grooves 806, the rigidity of the material between the two through grooves 806 can be reduced, so that the material between the two through grooves 806 is more easily deformed in the radial direction of the rod body 803, so that the first protrusion can be displaced in the radial direction of the rod body 803, so as to facilitate the first protrusion to be clamped into the first recess or separated from the first recess.

[0136] By inserting the mandrel 804 into the rod body 803, the rigidity of the whole rod body 803 can be improved, so that the rod body 803 can better transmit power between the motor 100 and the brush disc 805. By arranging the second recess 807 on the mandrel 804, the material between the two through grooves 806 can be avoided, so as to facilitate the displacement of the first protrusion.

[0137] In some embodiments of the utility model, the electric toothbrush further comprises a circuit board 10.

[0138] The circuit board 10 is arranged in the first accommodating space 503, and the circuit board 10 is electrically connected with the motor 100, and the circuit board 10 is provided with an operation button 1011.

[0139] The shell 5 is provided with a second recess 508, and the wall thickness of the position where the second recess 508 is arranged on the shell 5 is smaller than the wall thickness of other positions of the shell 5, and the second recess 508 is arranged opposite to the operation button 1011.

[0140] In the embodiment, the second recess 508 is arranged at the position corresponding to the operation button 1011 of the shell 5, so that the wall thickness of the position corresponding to the operation button 1011 of the shell 5 is reduced, so that the position corresponding to the operation button 1011 of the shell 5 is more easily deformed, so that the operator can press the operation button 1011 by pressing the shell 5.

[0141] In some embodiments of the utility model, the motor 100 comprises a support 1, a stator assembly 2 and a rotor assembly 3.

[0142] The support 1 is provided with an accommodating cavity 103 in the inside.

[0143] The stator assembly 2 is arranged in the accommodating cavity 103, for example, the stator assembly 2 and the support 1 can be bonded or screwed.

[0144] The rotor assembly 3 is rotationally connected with the support 1, and the rotor assembly 3 can be driven to rotate by the stator assembly 2.

[0145] At least part of the rotor assembly 3 is arranged in the accommodating cavity 103.

[0146] Along the axial direction of the rotor assembly 3, one end of the rotor assembly 3 close to the connecting port 504 forms an output end 301 for connecting the toothbrush head 8.

[0147] Optionally, referring to Figure 2As shown, the rotor assembly 3 passes through the output hole 104, and the output end 301 of the rotor assembly 3 is arranged outside the accommodating cavity 103. That is, the rotor assembly 3 can be arranged inside the accommodating cavity 103 except for the output end 301.

[0148] Reference Figure 2 As shown, by arranging the output end 301 outside the accommodating cavity 103, the diameter of the output end 301 can be adjusted according to the size of the brush head 8, so that the size of the connecting hole 302 on the output end 301 can better adapt to the brush head 8, thereby avoiding the size change of the part of the rotor assembly 3 located inside the accommodating cavity 103, reducing the structural modification of the motor 100, and reducing the design difficulty of the motor 100.

[0149] Alternatively, the output end 301 can also not protrude out of the accommodating cavity 103. For example, in other embodiments, the output end 301 is arranged inside the accommodating cavity 103, the brush head 8 can pass through the output hole 104 and be inserted with the connecting hole 302, that is, the rotor assembly 3 can be completely arranged inside the accommodating cavity 103.

[0150] In this way, the output end 301 is arranged inside the accommodating cavity 103 and does not protrude out of the support 1, so that the axial size of the motor 100 can be shortened, and the axial size of the electric toothbrush can be further shortened. In addition, the connecting hole 302 is arranged inside the accommodating cavity 103, so that the brush head 8 can be inserted into the accommodating cavity 103 of the motor 100 and inserted with the connecting hole 302, thereby fully utilizing the internal space of the motor 100 and further shortening the axial size of the electric toothbrush.

[0151] In some embodiments of the utility model, the rotor assembly 3 includes a rotating shaft 305.

[0152] The rotating shaft 305 includes a first shaft section 305a and a second shaft section 305b. The first shaft section 305a and the second shaft section 305b both extend along the first direction X, and one end of the first shaft section 305a and one end of the second shaft section 305b are connected. For example, the first shaft section 305a and the second shaft section 305b are arranged as a machined integral structure or a welded integral structure. Alternatively, the first shaft section 305a and the second shaft section 305b can also be connected by means of adhesion, threaded connection or fastener connection.

[0153] Among them, the first shaft section 305a is rotatably connected with the support 1. The connecting hole 302 is arranged on the end face of the second shaft section 305b away from the first shaft section 305a, that is, one end of the second shaft section 305b away from the first shaft section 305a forms the output end 301. The diameter of the second shaft section 305b is greater than the diameter of the first shaft section 305a.

[0154] In the embodiment, by making the diameter of the second shaft segment 305b greater than the diameter of the first shaft segment 305a, the diameter of the connecting hole 302 arranged on the second shaft segment 305b can be increased, so that the diameter of the connecting hole 302 is adapted to the diameter of the toothbrush head 8, and thus the diameter of the toothbrush head 8 can be greater, avoiding the problem that the toothbrush head 8 is too thin and lacks rigidity.

[0155] In addition, by arranging the first shaft segment 305a and the second shaft segment 305b, only the size of the second shaft segment 305b can be increased, and the diameter of the first shaft segment 305a connected to the support 1 does not need to be increased, so that the size of the support 1 in the radial direction of the first shaft segment 305a does not need to be increased, so that the radial size of the motor 100 is more compact.

[0156] Optionally, the second shaft segment 305b is arranged outside the accommodating cavity 103 of the support 1, one end of the first shaft segment 305a passes through the output hole 104 and is connected to the second shaft segment 305b, and the other end of the first shaft segment 305a away from the second shaft segment 305b is arranged inside the accommodating cavity 103.

[0157] In some embodiments provided by the utility model, the support 1 comprises a shell 101 and an end cover 102.

[0158] Among them, along the axial direction of the rotor assembly 3, one end of the shell 101 is provided with the output hole 104, the other end of the shell 101 is provided with an opening, and the inside of the shell 101 forms the accommodating cavity 103.

[0159] The end cover 102 is connected to the shell 101 and is used for closing the opening. For example, the end cover 102 is inserted into the shell 101, the edge of the opening of the shell 101 is provided with a turn-up, the turn-up is folded towards the inside of the opening, and the turn-up is abutted against the side of the end cover 102 away from the shell 101, so as to limit and fix the end cover 102 and prevent the end cover 102 from being separated from the shell 101. Of course, the end cover 102 can also be bonded to the shell 101 or connected through a threaded fastener.

[0160] In this way, the stator assembly 2 and the rotor assembly 3 can be installed after the shell 101, and then the shell 101 is closed by the end cover 102, so as to facilitate the assembly of the motor 100.

[0161] Optionally, the motor 100 further comprises a bearing 4. The end of the shell 101 away from the end cover 102 and the end cover 102 are both provided with the bearing 4, and the two ends of the shaft 305 are respectively inserted into the inner rings of the bearings 4 on the shell 101 and the end cover 102.

[0162] Optionally, as shown in Figure 8 and Figure 9 In some embodiments provided by the utility model, the end cover 102 comprises a cover body 102a and an insertion part 102b.

[0163] Both ends of the cover body 102a are provided with a first through slot 102e and a second through slot 102f along the radial direction of the rotor assembly 3.

[0164] The first through slot 102e extends along the radial direction of the rotor assembly 3 and penetrates the side wall of the cover body 102a along the radial direction of the rotor assembly 3. For example Figure 9 As shown, the top end of the first through slot 102e at the top of the cover body 102a penetrates the upper side wall of the cover body 102a, and the bottom end of the first through slot 102e at the bottom of the cover body 102a penetrates the lower side wall of the cover body 102a.

[0165] The second through slot 102f is provided at one end of the first through slot 102e close to the center of the cover body 102a, and the second through slot 102f intersects and communicates with the first through slot 102e. Both the first through slot 102e and the second through slot 102f penetrate the cover body 102a along the axial direction of the rotor assembly 3.

[0166] The number of the plug-in portions 102b is two. Both of the plug-in portions 102b are connected to the surface of the cover body 102a close to the shell 101, and the two plug-in portions 102b are respectively arranged on both sides of the line connecting the two first through slots 102e. The two plug-in portions 102b have a spacing therebetween.

[0167] In this embodiment, when the end cover 102 is installed on the shell 101, the two plug-in portions 102b are inserted into the shell 101 through the opening of the shell 101, and the cover body 102a abuts against the end surface of the shell 101 to close the opening.

[0168] In addition, by arranging the intersecting first through slot 102e and second through slot 102f at both ends of the end cover 102, and distributing the two plug-in portions 102b on both sides of the line connecting the two first through slots 102e, due to the arrangement of the first through slot 102e and the second through slot 102f, the cover body 102a is provided with greater elastic deformation space in structure. When the two plug-in portions 102b are squeezed during the insertion into the shell 101, the cover body 102a can be deformed through the first through slot 102e and the second through slot 102f to make the plug-in portions 102b close to each other to adapt to the space limitation inside the shell 101, thereby reducing the difficulty of inserting the end cover 102 into the shell 101, and making the plug-in portions 102b abut against the inner wall of the shell 101 after being inserted into the shell 101.

[0169] Further, the surface of the two plug-in parts 102b close to each other is provided with a limiting block 102c, and the surface of the two limiting blocks 102c close to each other is provided with an arc-shaped groove 102d. The bearing 4 is arranged between the two limiting blocks 102c, and the outer circumferential surface of the bearing 4 is attached to the two arc-shaped grooves 102d. In this way, the plug-in part 102b can be plugged and fixed with the shell 101, and the bearing 4 can be installed and fixed.

[0170] In some embodiments of the utility model, the rotor assembly 3 includes a rotating shaft 305 and a magnet structure.

[0171] The rotating shaft 305 is rotatably connected with the support 1. For example, the rotating shaft 305 is rotatably connected with the support 1 through the bearing 4. The magnet structure is connected with the rotating shaft 305. For example, the magnet structure can be connected with the rotating shaft 305 by adhesion or clamping.

[0172] Correspondingly, the stator assembly 2 includes an iron core 201 and a coil 202.

[0173] The iron core 201 is connected with the support 1. The iron core 201 is connected with the support 1 by adhesion or through a threaded fastener. The coil 202 is arranged on the iron core 201 and is oppositely arranged with the magnet structure.

[0174] In this embodiment, by arranging the magnet structure on the rotating shaft 305 and arranging the iron core 201 and the coil 202 on the support 1, in the use process, when the coil 202 is supplied with current, the magnet structure is driven to rotate under the magnetic field generated by the coil 202. By adjusting the current size and direction of the coil 202, the driving force received by the magnet structure and the rotating speed and direction of the rotating shaft 305 can be conveniently controlled.

[0175] In this way, since the coil 202 is not arranged on the rotating shaft 305, that is, the coil 202 remains stationary without rotating, it is not necessary to arrange a commutator, so that the structure of the motor can be simplified, and the structure of the motor is more compact. In addition, without arranging the commutator, the failure points can be reduced, and the noise and vibration can be reduced.

[0176] Reference Figure 3 and Figure 5 As shown in the figures, in some embodiments of the utility model, the magnet structure includes a magnet group.

[0177] The magnet group includes two magnets 306, and the two magnets 306 are arranged along the circumference of the rotating shaft 305, and have a spacing between the two magnets 306. In the magnet group, the magnetic field directions of the two magnets 306 are respectively towards and away from the rotating shaft 305.

[0178] The coil 202 is oppositely arranged with the magnet group.

[0179] In the embodiment, when the first current is passed through the coil 202, the first magnetic field is generated in the coil 202, the magnet 306 in the magnet group with the same direction as the first magnetic field is attracted and has the tendency to approach the magnet 306, and the magnet 306 with the opposite direction to the first magnetic field is repelled and has the tendency to move away from the magnet 306, so that the rotating shaft 305 rotates in the first rotating direction.

[0180] When the second current is passed through the coil 202, the second magnetic field is generated in the coil 202, the magnet 306 in the magnet group with the same direction as the second magnetic field is attracted and has the tendency to approach the magnet 306, and the magnet 306 with the opposite direction to the second magnetic field is repelled and has the tendency to move away from the magnet 306, so that the rotating shaft 305 rotates in the second rotating direction. The current directions of the first current and the second current are opposite, and the rotating directions of the first rotating direction and the second rotating direction are opposite.

[0181] In this way, by changing the current direction of the coil 202, the reciprocating rotating effect of the motor 100 can be generated, so that the motor 100 can drive the toothbrush head 8 to reciprocate and clean the teeth.

[0182] Further, the magnet structure includes at least two magnet groups, and the at least two magnet groups are arranged along the circumference of the rotating shaft 305. Figure 3 As shown, the magnet structure includes an example of two magnet groups.

[0183] Each magnet group includes two magnets 306, the coil 202 corresponds to the magnet group, and the coil 202 is arranged opposite to the corresponding magnet group.

[0184] In the embodiment, by arranging the at least two magnet groups, on the one hand, the output torque of the motor 100 can be increased, so as to improve the cleaning effect of the electric toothbrush, and on the other hand, the rotating shaft 305 is balanced in the circumferential direction, the noise and abnormal sound are reduced, the probability of damage of the motor 100 is reduced, and the service life of the motor 100 is prolonged.

[0185] Reference Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments of the utility model, the iron core 201 is arranged in a sleeve structure.

[0186] The surface of the sleeve structure facing the rotating shaft 305 is provided with a protruding part 201a, and the coil 202 is arranged on the protruding part 201a. For example, when the coil 202 is multiple, the protruding part 201a corresponds to the coil 202, and the coil 202 is arranged on the corresponding protruding part 201a.

[0187] In the embodiment, the protruding part 201a can guide the magnetic lines more accurately, reduce magnetic leakage, i.e. better concentrate the magnetic field, so that the magnetic lines are more concentrated around the coil 202, thereby improving the magnetic flux density and enhancing the working efficiency of the motor. In addition, the protruding part 201a can be used to fix and position the coil 202, improve the connection strength between the coil 202 and the core 201, and avoid loosening of the coil 202.

[0188] By setting the core 201 as a sleeve structure, on the one hand, the closed magnetic circuit can be better formed, the magnetic leakage can be reduced, and the magnetic flux density can be improved, and on the other hand, the sleeve structure itself has good mechanical strength and can withstand high mechanical stress and vibration, thereby prolonging the service life of the motor. Finally, the sleeve structure is sleeved on the outside of the magnet structure, so that even if the magnet structure is separated from the rotating shaft 305, the sleeve structure can limit the magnet structure and prevent the magnet structure from falling out of the sleeve structure.

[0189] With reference to Figure 3 、 Figure 5 and Figure 7 , in some embodiments of the utility model, the coil 202 and the magnet group are both set as at least two, and the coil 202 is oppositely arranged with the corresponding magnet group. The stator assembly 2 further comprises a limiting piece 203.

[0190] The limiting piece 203 is arranged between the adjacent two coils 202 and is used for limiting the coil 202. The limiting piece 203 is connected with the barrel wall of the sleeve structure.

[0191] In the embodiment, by arranging the limiting piece 203 between the adjacent two coils 202, on the one hand, the coil 202 can be kept in the correct position, preventing the coil 202 from being displaced and ensuring the stability of the coil 202. On the other hand, the adjacent two coils 202 can be prevented from contacting each other and causing short circuit.

[0192] Optionally, the limiting piece 203 can be bonded with the barrel wall of the sleeve structure.

[0193] With reference to Figure 3 、 Figure 5 and Figure 6 , in some embodiments of the utility model, the rotor assembly 3 further comprises a mounting seat 307.

[0194] The mounting seat 307 is sleeved on the rotating shaft 305, and a mounting groove 307a is arranged on the surface of the mounting seat 307 away from the rotating shaft 305. The magnet structure is arranged in the mounting groove 307a. Specifically, the mounting groove 307a corresponds to the magnet 306 one by one, and the magnet 306 is arranged in the corresponding mounting groove 307a.

[0195] In the embodiment, the mounting base 307 is arranged, and the mounting groove 307a is arranged on the mounting base 307, so that the magnet 306 is conveniently mounted and fixed.

[0196] Optionally, the magnet 306 can be bonded with the inner wall of the mounting groove 307a, so as to avoid the magnet 306 from being separated from the mounting groove 307a during rotation.

[0197] Optionally, the mounting base 307 can be bonded with the rotating shaft 305, so as to avoid relative rotation between the mounting base 307 and the rotating shaft 305.

[0198] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. An electric toothbrush characterized by comprising: The electric toothbrush comprises a shell (5) and a motor (100); The shell (5) is internally provided with a first accommodating space (503), and the shell (5) extends along a first direction (X) and has a first end (501) and a second end (502) in the first direction (X). The first end (501) is provided with a connecting port (504) through which a toothbrush head (8) passes, at an end face away from the second end (502). The second end (502) is provided with a mounting port (505) through which the motor (100) passes, at an end face away from the first end (501). The connecting port (504) and the mounting port (505) are in communication with the first accommodating space (503). The motor (100) is arranged in the first accommodating space (503), and the motor (100) comprises an output end (301) rotatably arranged and facing the connecting port (504). In the first direction (X), the output end (301) does not protrude from the end face of the first end (501) away from the second end (502). The output end (301) is provided with a connecting hole (302) at an end face close to the connecting port (504), and the connecting hole (302) is used for plug-in fixing with the toothbrush head (8).

2. The electric toothbrush according to claim 1, wherein The electric toothbrush further comprises a sealing member (6) sleeved on the output end (301), and the sealing member (6) abuts against an inner wall of the shell (5).

3. The electric toothbrush according to claim 2, wherein The sealing member (6) comprises a first sleeve body (601) and a second sleeve body (602). The first sleeve body (601) is sleeved on the output end (301), and the second sleeve body (602) is arranged on a side of the first sleeve body (601) away from the output end (301) and abuts against the inner wall of the shell (5). The first sleeve body (601) and the second sleeve body (602) are in airtight connection at an end close to the connecting port (504). The electric toothbrush further comprises a connecting seat (9). In the first direction (X), one end of the connecting seat (9) is connected with the motor (100), and the other end of the connecting seat (9) is arranged between the first sleeve body (601) and the second sleeve body (602) and abuts against the second sleeve body (602).

4. The electric toothbrush according to claim 3, wherein The electric toothbrush further comprises a first buffer member (11) arranged in a sleeve structure. The first buffer member (11) is sleeved on an end of the motor (100) close to the connecting port (504), and the connecting seat (9) is sleeved on the first buffer member (11). And / or, the electric toothbrush further comprises a second buffer member (12) arranged in a sleeve structure. The second buffer member (12) is sleeved on an end of the motor (100) away from the connecting port (504), and the second buffer member (12) abuts against the inner wall of the shell (5).

5. The electric toothbrush according to any one of claims 1-4, characterized in that The electric toothbrush further comprises: A fixing seat (7) is arranged in the first accommodating space (503), and the fixing seat (7) is located on the side of the motor (100) away from the connecting port (504). The inside of the fixing seat (7) is provided with a second accommodating space (701); A battery (13) is arranged in the second accommodating space (701), and the battery (13) is electrically connected with the motor (100).

6. The electric toothbrush according to claim 5, wherein A first clamping part (506) is arranged on the inner wall of the shell (5) opposite to the fixing seat (7), and a first limiting part (702) is arranged on the fixing seat (7). The first clamping part (506) is used for limiting the first limiting part (702) in the circumferential direction of the shell (5); And / or, a clamping arm (703) is arranged between the fixing seat (7) and the shell (5) in a second direction (Y). The second direction (Y) intersects the first direction (X). The clamping arm (703) extends along the first direction (X). One end of the clamping arm (703) close to the connecting port (504) is connected with the fixing seat (7). There is a spacing between the other end of the clamping arm (703) away from the connecting port (504) and the fixing seat (7). The other end of the clamping arm (703) away from the connecting port (504) does not protrude from the end face of the fixing seat (7) away from the connecting port (504). A second limiting part (704) is arranged on the surface of the clamping arm (703) away from the fixing seat (7). A second clamping part (507) is arranged on the shell (5). The second clamping part (507) is used for limiting the second limiting part (704) in the first direction (X).

7. The electric toothbrush according to claim 6, wherein An avoiding hole (705) is arranged on the fixing seat (7) between the battery (13) and the other end of the clamping arm (703) away from the connecting port (504); And / or, the electric toothbrush further comprises a tail cover (14). The tail cover (14) is sealed to the mounting port (505). The tail cover (14) is connected with the shell (5). An inserting part (1401) is arranged on one end of the tail cover (14) close to the battery (13). The inserting part (1401) is arranged on the side of the clamping arm (703) close to the battery (13).

8. The electric toothbrush according to any one of claims 1-4, wherein the head is made of a material having a hardness of 50-90 Shore D. A first limiting structure (303) is arranged on the hole wall of the connecting hole (302). The toothbrush head (8) is provided with a first matching structure (801). The first limiting structure (303) is used for limiting the first matching structure (801) in the circumferential direction of the connecting hole (302); And / or, a second limiting structure (304) is arranged on the hole wall of the connecting hole (302). The toothbrush head (8) is provided with a second matching structure (802). The second limiting structure (304) is used for limiting the second matching structure (802) in the axial direction of the connecting hole (302).

9. The electric toothbrush according to claim 8, wherein The toothbrush head (8) comprises a brush disc (805), a rod body (803) and a mandrel (804), the rod body (803) is a tubular structure, the rod body (803) is sleeved on the mandrel (804) and is used for mounting the brush disc (805), and the rod body (803) is used for being inserted into the connecting hole (302); The second limiting structure (304) is a first groove, the second matching structure (802) is a first protrusion arranged on the surface of the rod body (803) away from the mandrel (804), at least two through grooves (806) are arranged on the rod body (803), the through grooves (806) penetrate the side wall of the rod body (803) in the thickness direction of the rod body (803), and the first protrusion is arranged between two adjacent through grooves (806).

10. The electric toothbrush according to claim 8, wherein The first limiting structure (303) is a second protrusion arranged on the hole wall of the connecting hole (302), the toothbrush head (8) comprises a rod body (803) used for mounting a brush disc (805), the rod body (803) is used for being inserted into the connecting hole (302), the first matching structure (801) is a first recess arranged on the side wall of the rod body (803), and the first recess extends to the end face of the rod body (803) away from the brush disc (805) in the axial direction of the rod body (803).

11. The electrically powered toothbrush according to any one of claims 1-4, characterized in that The electric toothbrush further comprises a circuit board (10), the circuit board (10) is arranged in the first containing space (503), and the circuit board (10) is electrically connected with the motor (100), and the circuit board (10) is provided with an operation button (1011); The shell (5) is provided with a second recess (508), and the wall thickness of the position, at which the second recess (508) is located, of the shell (5) is smaller than that of other positions of the shell (5), and the second recess (508) is arranged opposite to the operation button (1011).

12. The electrically powered toothbrush according to any one of claims 1-4, characterized in that The motor (100) comprises: A support (1) internally has a containing cavity (103), and the support (1) is provided with an output hole (104) at one end close to the connecting port (504), and the output hole (104) is in communication with the containing cavity (103); A stator assembly (2) is arranged in the containing cavity (103); A rotor assembly (3) is rotationally connected with the support (1), at least part of the rotor assembly (3) is arranged in the containing cavity (103), and one end of the rotor assembly (3) close to the connecting port (504) is arranged as the output end (301) in the first direction (X); The rotor assembly (3) passes through the output hole (104), and the output end (301) is arranged outside the containing cavity (103), or the output end (301) is arranged in the containing cavity (103), and the toothbrush head (8) passes through the output hole (104) and is inserted into the connecting hole (302).

13. The electrically powered toothbrush of claim 12, wherein, The rotor assembly (3) comprises a rotating shaft (305), the rotating shaft (305) comprises a first shaft section (305a) and a second shaft section (305b), the first shaft section (305a) and the second shaft section (305b) both extend along the first direction (X), and one end of the first shaft section (305a) is connected with one end of the second shaft section (305b); The first shaft section (305a) is rotationally connected with the support (1), the second shaft section (305b) is provided with the connecting hole (302) on the end face away from the first shaft section (305a), and the diameter of the second shaft section (305b) is greater than the diameter of the first shaft section (305a).

14. The electrically powered toothbrush according to claim 12, characterized in that The rotor assembly (3) comprises a rotating shaft (305) and a magnet structure, the rotating shaft (305) is rotationally connected with the support (1), and the magnet structure is connected with the rotating shaft (305); The stator assembly (2) comprises an iron core (201) and a coil (202), the iron core (201) is connected with the support (1), the coil (202) is wound on the iron core (201), and the coil (202) is arranged opposite to the magnet structure.

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