Electric toothbrush

Abstract

The invention 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 present invention relates to the technical field of toothbrushes, in particular to an electric toothbrush. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, personal care products are also constantly improving. Among them, electric toothbrushes are loved by more and more consumers because of their efficient cleaning effect.

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

[0004] First, the output shaft of the motor increases the total length of the toothbrush, making it difficult to carry when traveling or going out, especially when it needs to be put into a suitcase or handbag, and its size is particularly bulky. Second, the output shaft of the motor may cause damage to surrounding items if it is not placed properly, such as scratching or bumping the surface of other precision electronic products, especially the screens of devices such as smartphones and tablets. Summary of the invention

[0005] In view of this, the present invention 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 longer.

[0006] In a first aspect, the present invention provides an electric toothbrush, comprising a housing and a motor;

[0007] The shell has a first accommodating space inside, the shell extends in a first direction and has a first end and a second end in the first direction, the end surface of the first end away from the second end is provided with a connecting port through which a toothbrush head can pass, the end surface of the second end away from the first end is provided with a mounting port through which the motor can pass, and the connecting port and the mounting port are both connected to the first accommodating space;

[0008] The motor is arranged in the first accommodating space, and 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 surface of the first end away from the second end. A connecting hole is provided on the end surface of the output end close to the connecting port, and the connecting hole is used for plugging and fixing with the toothbrush head.

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

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

[0011] The electric toothbrush further comprises a connecting seat, wherein in the first direction, one end of the connecting seat is connected to the motor, 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 optional embodiment, the electric toothbrush further comprises a first buffer member, the first buffer member is configured as a sleeve structure, the first buffer member is sleeved on an 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, which is configured as a sleeve structure, is sleeved on an end of the motor away from the connecting port, and is against an inner wall of the outer shell.

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

[0015] A mounting seat is provided in the first accommodation space, and the mounting seat is located at a side of the motor away from the connecting port, and a second accommodation space is provided inside the mounting seat;

[0016] A battery is disposed in the second accommodation space, and the battery is electrically connected to the motor.

[0017] In an optional embodiment, a first clamping portion is provided on an inner wall of the housing opposite to the mounting seat, and a first limiting portion is provided on the mounting seat, and the first clamping portion is used to limit the first limiting portion in the circumferential direction of the housing;

[0018] And / or, along the second direction, a clamping arm is provided between the mounting seat and the shell, the second direction intersects with the first direction, the clamping arm extends along the first direction, and the end of the clamping arm close to the connecting port is connected to the mounting seat, and there is a distance between the end of the clamping arm away from the connecting port and the mounting seat, the end of the clamping arm away from the connecting port does not protrude from the end surface of the mounting seat away from the connecting port, a second limiting portion is provided on the surface of the clamping arm away from the mounting seat, and the shell is provided with a second clamping portion, and the second clamping portion is used to limit the second limiting portion in the first direction.

[0019] In an optional embodiment, the mounting seat is provided with an avoidance hole, and the avoidance hole is provided between the battery and an end of the clamping arm away from the connecting port;

[0020] And / or, the electric toothbrush also includes a tail cover, which is sealed at the installation port, and is connected to the shell. A connector is provided at one end of the tail cover close to the battery, and the connector is placed on a side of the clamping arm close to the battery.

[0021] In an optional embodiment, a first limiting structure is provided on the hole wall of the connecting hole, and 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] And / or, a second limiting structure is provided on the hole wall of the connecting hole, and a second matching structure is provided on the toothbrush head, and the second limiting structure is used to limit the second matching structure in the axial direction of the connecting hole.

[0023] In an optional embodiment, the toothbrush head comprises a brush disc, a rod body and a core shaft, the rod body is a tubular structure, the rod body is sleeved on the core shaft and is used to install 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, and the second matching structure is a first protrusion arranged on the surface of the rod body away from the core shaft. The rod body is provided with at least two through grooves, and the through grooves penetrate the side wall of the rod body along the wall thickness direction of the rod body. The first protrusion is arranged between two adjacent through grooves, and the second groove is provided on the surface of the core shaft facing the first protrusion.

[0025] In an optional embodiment, the first limiting structure is a second protrusion provided on the hole wall of the connecting hole, the toothbrush head includes a rod body for mounting a brush disc, the rod body is used to insert into the connecting hole, and the first matching structure is a first recess provided on the side wall of the rod body, and along the axial direction of the rod body, the first recess extends to the end face of the rod body away from the brush disc.

[0026] In an optional embodiment, the electric toothbrush further comprises a circuit board, the circuit board is arranged in the first accommodation 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, and the wall thickness at the position of the second recess is smaller than the wall thickness at other positions of the shell. The second recess is arranged opposite to the operation button.

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

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

[0030] A stator assembly is arranged in the accommodating cavity;

[0031] A rotor assembly is rotatably connected to the support, at least a portion of the rotor assembly is disposed within the accommodating cavity, and along the first direction, an end of the rotor assembly close to the connecting port is configured as the output end;

[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 plugged into the connecting hole.

[0033] In an optional embodiment, the rotor assembly includes a rotating shaft, the rotating shaft includes a first shaft segment and a second shaft segment, the first shaft segment and the second shaft segment both extend along the first direction, and one end of the first shaft segment is connected to one end of the second shaft segment;

[0034] The first shaft section is rotatably connected to the support, the connecting hole is provided on the end surface of the second shaft section facing away from the first shaft section, and the diameter of the second shaft section is greater than the diameter of the first shaft section.

[0035] In an optional embodiment, the rotor assembly includes a rotating shaft and a magnet structure, the rotating shaft is rotatably connected to the support, and the magnet structure is connected to the rotating shaft;

[0036] The stator assembly comprises an iron core and a coil, wherein the iron core is connected to the support, and the coil is wound around the iron core and arranged opposite to the magnet structure.

[0037] The electric toothbrush provided by the present invention has a connecting hole at the output end, so the output end is arranged in the shell, and the toothbrush head can be plugged and fixed without making the output end protrude from the shell to connect and fix the toothbrush head, so that the output end does not need to protrude from the shell, thereby shortening the size of the electric toothbrush in the axial direction, improving the portability of the electric toothbrush, and preventing the output end from damaging surrounding objects during carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A front view of a motor provided in an embodiment of the present invention;

[0040] Figure 2 for Figure 1 The AA section view in the view shown;

[0041] Figure 3 for Figure 2 The BB section view in the view shown;

[0042] Figure 4 for Figure 1 an axonometric view of the motor shown;

[0043] Figure 5 An exploded structural diagram of a motor provided in an embodiment of the present invention;

[0044] Figure 6 It is a structural schematic diagram of a rotor assembly provided in an embodiment of the present invention;

[0045] Figure 7 A schematic diagram of the structure of a stator assembly provided in an embodiment of the present invention;

[0046] Figure 8 A schematic diagram of the structure of an end cover provided in an embodiment of the present invention;

[0047] Fig. 9 for Figure 8 Schematic diagrams of other angles of the end cap shown;

[0048] Fig.10 An exploded structural diagram of an electric toothbrush provided in an embodiment of the present invention;

[0049] Fig.11 is a cross-sectional view of an electric toothbrush provided in an embodiment of the present invention;

[0050] Fig.12 for Fig.11 Section CC in the view shown;

[0051] Fig.13 for Fig.11 A partial enlarged view of position I in the view shown;

[0052] Fig.14 for Fig.11A partial enlarged view of position II in the view shown;

[0053] Fig.15 It is a schematic structural diagram of the first buffer member and the second buffer member provided in an embodiment of the present invention when they are installed on a motor;

[0054] Fig.16 It is a schematic diagram of the structure of the mounting base provided in an embodiment of the present invention;

[0055] Fig.17 A schematic diagram of the connection relationship between the rod body and the core shaft provided in an embodiment of the present invention;

[0056] Fig.18 An exploded view of the structure of a toothbrush head provided in an embodiment of the present invention;

[0057] Fig.19 A schematic diagram of the structure of the toothbrush head and the output end in the axial positioning provided in an embodiment of the present invention;

[0058] Fig. 20 A schematic diagram of the structure of the toothbrush head and the output end in the circumferential direction provided in an embodiment of the present invention;

[0059] Fig.21 It is a schematic structural diagram of a sealing member provided in an embodiment of the present invention;

[0060] Fig. 22 Schematic diagram of the structure of an electric toothbrush provided in an embodiment of the present invention.

[0061] Description of reference numerals:

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

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0064] Combine the following Figures 1 to 22 , describing the electric toothbrush provided in an embodiment of the present invention.

[0065] Specifically, the electric toothbrush includes a housing 5 and a motor 100 .

[0066] The first accommodating space 503 is provided inside the shell 5. The shell 5 extends along the 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 the axial direction of the electric toothbrush. A connecting port 504 is provided on the end surface of the first end 501 away from the second end 502, and the connecting port 504 can be passed through by the toothbrush head 8. An installation port 505 is provided on the end surface of the second end 502 away from the first end 501, and the installation port 505 can be passed through by the motor 100. The connecting port 504 and the installation port 505 are both connected to the first accommodating space 503, so that the toothbrush head 8 can extend into the first accommodating space 503 through the connecting port 504, and the motor 100 can enter and exit the first accommodating space 503 through the installation port 505.

[0067] The motor 100 is disposed in the first accommodation space 503. The motor 100 includes a rotatably disposed output end 301, and the output end 301 faces the connection 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. Optionally, 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 disposed in the first accommodation space 503.

[0068] A connection hole 302 is provided on the end surface of the output end 301 close to the connection port 504. The connection hole 302 is used to be plugged and fixed with the toothbrush head 8. For example, the connection hole 302 is fixed with the toothbrush head 8 by snapping.

[0069] In this embodiment, the motor 100 can be arranged in the first accommodation space 503 of the housing 5 through the installation opening 505, and the output end 301 of the motor 100 does not protrude from the housing 5. When installing the toothbrush head 8, the toothbrush head 8 can be inserted into the connection opening 504 of the housing 5 and plugged and fixed with the connection hole 302 of the output end 301. During the process of cleaning teeth, the toothbrush head 8 is driven by the motor 100 to rotate to clean the teeth.

[0070] In this arrangement, since a connecting hole 302 is provided at the output end 301, the output end 301 can be arranged in the shell 5, and the toothbrush head 8 can be plugged in and fixed without making the output end 301 protrude from the shell 5 to connect and fix 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 preventing the output end 301 from damaging surrounding objects during carrying.

[0071] refer to Fig.10 , Fig.11 and Fig.13 As shown, in some embodiments provided by the present invention, the electric toothbrush further includes a sealing member 6.

[0072] The sealing member 6 is sleeved on the output end 301 , and the sealing member 6 abuts against the inner wall of the housing 5 .

[0073] In this embodiment, by setting a seal 6 between the output end 301 and the inner wall of the outer shell 5, the gap between the output end 301 and the outer shell 5 can be sealed to prevent water stains or foam from entering the outer shell 5 through the gap between the output end 301 and the outer shell 5 and causing damage to the motor 100 or the circuit board 10.

[0074] refer to Fig.13 and Fig.21 As shown, in some embodiments provided by the present invention, the sealing element 6 includes a first sleeve 601 and a second sleeve 602 .

[0075] The first sleeve 601 is sleeved on the output end 301 and rotatably cooperates with the output end 301. The second sleeve 602 is arranged on the side of the first sleeve 601 away from the output end 301 and abuts against the inner wall of the housing 5, that is, the second sleeve 602 is sleeved on the outside of the first sleeve 601.

[0076] The first sleeve 601 and the second sleeve 602 are sealed and connected at one end close to the connection port 504. For example, there is a distance between the first sleeve 601 and the second sleeve 602, and the first sleeve 601 and the second sleeve 602 are connected at one end close to the connection port 504 through a ring structure, for example, the first sleeve 601, the second sleeve 602 and the ring structure are set as an integrally formed structure.

[0077] The electric toothbrush further comprises a connection base 9. In the first direction X, one end of the connection base 9 is connected to the motor 100, and the other end of the connection base 9 is arranged 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 sealing structure with the output end 301, and the second sleeve 602 is abutted against the inner wall of the outer shell 5, thereby forming a sealing structure with the outer shell 5, and 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] The second sleeve 602 can be sandwiched between the connection seat 9 and the inner wall of the housing 5 by the connection seat 9 and the second sleeve 602, so that the second sleeve 602 can be in close contact with the housing 5, thereby improving the sealing effect between the second sleeve 602 and the housing 5. In addition, the pressing force on the second sleeve 602 is provided by the connection seat 9, without the need for the output end 301, so the resistance effect of the seal 6 on the output end 301 is smaller, so that the motor 100 rotates more smoothly.

[0080] Optionally, the sealing member 6 is configured as a rubber member or a silicone member.

[0081] Optionally, refer to Figure 10-11 As shown, along the direction from the second end 502 to the first end 501, the cross section of the first end 501 decreases, so that the first end 501 forms a shrinkage structure. This arrangement can prevent the motor 100 from escaping from the connection port, and on the other hand, when the connection seat 9 moves along the first direction, the gap between the connection seat 9 and the inner wall of the shrinkage structure becomes smaller, so that the second sleeve 602 can be pressed against the inner wall of the shrinkage structure.

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

[0083] refer to Fig.10 , Fig.11 and Fig.15 As shown, in some embodiments provided by the invention, the electric toothbrush further includes a first buffer member 11 .

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

[0085] In this embodiment, by setting the first buffer 11 between the motor 100 and the connecting seat 9, the first buffer 11 can play a role in buffering and shock absorption. On the one hand, it can reduce the vibration transmitted from the motor 100 to the housing 5 through the connecting seat 9, so that the user feels more comfortable when holding the housing 5 to clean teeth. On the other hand, when the electric toothbrush falls, the first buffer 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 configured as a rubber member or a silicone member.

[0087] Optionally, refer to Fig.10 and Fig.15 As shown, in the first direction X, one end of the connection seat 9 close to the motor 100 is provided with a plug-in block extending in the direction close to the motor 100, and the first buffer 11 is provided with a slot for inserting the plug-in block, and the slot is used to limit 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 to prevent the overall rotation displacement of the motor 100.

[0088] refer to Fig.10 , Fig.11 and Fig.15 As shown, the electric toothbrush further comprises a second buffer member 12 .

[0089] The second buffer member 12 is configured as 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 housing 5 .

[0090] In this embodiment, by arranging the second buffer 12 between the motor 100 and the housing 5, the second buffer 12 can play a role in buffering and shock absorption, so that on the one hand, the vibration transmitted from the motor 100 to the housing 5 can be reduced, so that the user feels more comfortable when holding the housing 5 to clean teeth. On the other hand, when the electric toothbrush falls, the second buffer can reduce the impact on the motor 100 and reduce the probability of damage to the motor 100.

[0091] In addition, by respectively providing the first buffer member 11 and the second buffer member 12 at both ends of the motor 100 , direct contact between the motor 100 and the housing 5 can be avoided, thereby reducing vibration transmission between the motor 100 and the housing 5 .

[0092] Optionally, the second buffer member 12 is configured as a rubber member or a silicone member.

[0093] refer to Fig.10 , Fig.11 and Fig.16 As shown, in some embodiments provided by the present invention, the electric toothbrush also includes a fixing seat 7 and a battery 13.

[0094] The fixing seat 7 is disposed in the first accommodation space 503 and is located on the side of the motor 100 away from the connection port 504. A second accommodation space 701 is disposed inside the fixing seat 7. Optionally, a side wall or end of the fixing seat 7 is provided with an inlet and outlet for the battery 13 to enter and exit.

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

[0096] In this embodiment, by setting the battery 13 to be electrically connected to the motor 100, the electric toothbrush can be used without an external power supply. By setting the battery 13 in the fixing seat 7, it is convenient to set a connection structure on the fixing seat 7 to connect with the housing 5, so that the battery 13 is installed and fixed by the fixing seat 7 to prevent the battery 13 from shifting. In addition, the fixing seat 7 can protect the battery 13 and reduce the impact and vibration of the battery 13.

[0097] Optionally, the fixing seat 7 abuts against the second buffer member 12 , thereby limiting the motor 100 in the first direction X to prevent the motor 100 from shifting in the first direction X.

[0098] refer to Fig.11 , Fig.12 as well as Fig.16As shown, in some embodiments provided by the present invention, a first clamping portion 506 is provided on the inner wall of the housing 5 opposite to the fixing seat 7. The fixing seat 7 is provided with a first limiting portion 702, and the first clamping portion 506 is used to limit the first limiting portion 702 in the circumferential direction of the housing 5.

[0099] In this embodiment, the first limiting portion 702 is circumferentially limited by the first clamping portion 506 on the housing 5 , which can prevent the fixing base 7 from rotating inside the housing 5 , making the fixing base 7 more stable inside the housing 5 .

[0100] Optionally, the number of the first clamping parts 506 is set to at least two, and at least two first clamping parts 506 are arranged in the circumferential direction of the housing 5, and the first limiting parts 702 are limitedly matched with the first clamping parts 506 in a one-to-one correspondence. Such a setting can provide a better circumferential limiting effect for the fixing seat 7 and make the force of the fixing seat 7 balanced.

[0101] Optionally, refer to Fig.12 As shown, the first clamping portion 506 includes two convex ribs, both of which extend along the first direction X, and there is a spacing between the two convex ribs in the circumferential direction of the housing 5. The first clamping portion 506 includes a limiting protrusion, which is used to be arranged between the two convex ribs. In the process of placing the fixing seat 7 from the installation opening 505 into the interior of the housing 5, 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 configured as an aluminum shell, and the shell can be processed by a pultrusion process. In this configuration, during the pultrusion process of the shell, convex ribs can be directly processed.

[0103] Of course, the first clamping portion 506 and the first limiting portion 702 may be interchangeable in structure, that is, the first limiting portion 702 includes two ribs, and the first clamping portion 506 includes a limiting protrusion.

[0104] refer to Fig.11 , Fig.14 as well as Fig.16 As shown, in some embodiments provided by the present invention, a clamping arm 703 is provided between the fixing seat 7 and the housing 5 along the second direction Y. The second direction Y intersects with the first direction X, for example, the two are perpendicular.

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

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

[0107] In this embodiment, a clamping arm 703 is provided between the fixing seat 7 and the outer shell 5, and a second limiting portion 704 is provided on the clamping arm 703. The second limiting portion 704 can cooperate with the second clamping portion 507 on the outer shell 5 to prevent the fixing seat 7 from moving in the first direction X in the outer shell 5, thereby ensuring the stability of the fixing seat 7 in the outer shell 5.

[0108] By providing 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 is swung and deformed in 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 recovers its 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 base 7, the space of the fixing base 7 in the second direction Y can be fully utilized to arrange the clamping arm 703, thereby making the size of the fixing base 7 in the first direction X more compact, thereby further shortening the size of the electric toothbrush in the first direction X, and improving the portability of the electric toothbrush.

[0110] Optionally, refer to Fig.14 As shown, the second limiting portion 704 is configured as a limiting protrusion, and the second clamping portion 507 is configured as a clamping groove.

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

[0112] refer to Fig.14 and Fig.16 As shown, in some embodiments provided by the present invention, a avoidance hole 705 is provided on the fixing seat 7 , and the avoidance hole 705 is provided between the battery 13 and an end of the clamping arm 703 away from the connecting port 504 .

[0113] In this embodiment, an avoidance hole 705 is provided between the clamping arm 703 and the battery 13. When the clamping arm 703 is swung and deformed along the second direction Y, the avoidance hole 705 can avoid the clamping arm 703, thereby avoiding interference between the clamping arm 703 and the fixing seat 7, so that the clamping arm 703 can be arranged closer to the fixing seat 7, thereby reducing the size of the clamping arm 703 protruding from the fixing seat 7 in the second direction Y, thereby reducing the radial size of the electric toothbrush and improving the portability of the electric toothbrush.

[0114] refer to Fig.11 and Fig.14 As shown, in some embodiments provided by the present invention, the electric toothbrush further includes a tail cover 14.

[0115] The tail cover 14 is sealed at the installation opening 505 and connected to the housing 5. A plug connector 1401 is provided at one end of the tail cover 14 close to the battery 13, and the plug connector 1401 is disposed on one side of the clamping arm 703 close to the battery 13.

[0116] In this embodiment, the installation opening 505 is blocked by the tail cover 14. On the one hand, the installation opening 505 can be sealed to prevent external impurities from entering the shell 5. On the other hand, the fixing seat 7 can be limited in the first direction X to further improve the stability of the fixing seat 7 in the shell 5.

[0117] By providing a connector 1401 on the tail cover 14, and placing the connector 1401 on the side of the clamping arm 703 close to the battery 13, a limit can be formed on the clamping arm 703 in the second direction Y to prevent the clamping arm 703 from deforming in the second direction Y, so that the second limit portion 704 on the clamping arm 703 and the second clamping portion 507 always maintain a limit fit.

[0118] For example, when the electric toothbrush falls to the ground or is impacted or vibrated, the connector 1401 can limit the deformation of the clamping arm 703, so that the second limiting portion 704 and the second clamping portion 507 maintain a limited fit, avoiding the second limiting portion 704 and the second clamping portion 507 from being separated, which would cause the battery 13 to loosen, thereby improving the stability of the electric toothbrush.

[0119] Optionally, the tail cover 14 may be connected to the housing 5 via a snap-fit ​​structure, or the tail cover 14 may be connected to the housing 5 via a threaded fastener.

[0120] refer to Figure 4 , Figure 6 and Fig. 20 As shown, in some embodiments provided by the present invention, a first limiting structure 303 is provided on the hole wall of the connecting hole 302 .

[0121] The toothbrush head 8 is provided with a first matching structure 801 , and the first limiting structure 303 is used to limit the first matching structure 801 in the circumferential direction of the connecting hole 302 .

[0122] In this embodiment, by setting a first limiting structure 303 on the hole wall of the connecting hole 302, the toothbrush head 8 can be limited in the circumferential direction of the connecting hole 302 to prevent the toothbrush head 8 from rotating relative to the connecting hole 302, so that the toothbrush head 8 can stably rotate synchronously with the output end 301, thereby ensuring the cleaning effect of the toothbrush head 8.

[0123] refer to Figure 4 and Figure 6 As shown, in some embodiments provided by the present invention, the first limiting structure 303 is a second protrusion provided on the hole wall of the connecting hole 302. For example, in the first direction X, one end of the second protrusion is connected to the bottom of the connecting hole 302, and the other end of the second protrusion extends toward the hole opening of the connecting hole 302.

[0124] The toothbrush head 8 includes a rod body 803 for mounting a brush plate 805, and the rod body 803 is used to be inserted into the connecting hole 302. The first matching structure 801 is a first depression provided on the side wall of the rod body 803, and along the axial direction of the rod body 803, the first depression extends to the end face of the rod body 803 away from the brush plate 805. The second matching structure 802 is provided on the rod body 803.

[0125] In this embodiment, when the rod 803 of the toothbrush head 8 is inserted into the connecting hole 302 , the first depression on the rod 803 abuts against the second protrusion on the wall of the connecting hole 302 , thereby forming a limit fit in the circumferential direction of the connecting hole 302 .

[0126] Alternatively, if Figure 4 or Figure 6 As shown, one end of the second protrusion near the center of the connecting hole 302 is set as a plane. Accordingly, the first recess can be formed by milling the rod body 803, that is, the milled portion on the rod body 803 is abutted against the surface of the second protrusion structure near the center of the connecting hole 302, thereby forming a circumferential positioning effect on the toothbrush head 8.

[0127] refer to Figure 4 , Figure 6 and Fig.19 As shown, in some embodiments provided by the present invention, a second limiting structure 304 is provided on the hole wall of the connecting hole 302 .

[0128] The toothbrush head 8 is provided with a second matching structure 802 , and the second limiting structure 304 is used to limit the second matching structure 802 in the axial direction of the connecting hole 302 .

[0129] In this embodiment, by setting a second limiting structure 304 on the hole wall of the connecting hole 302, the toothbrush head 8 can be limited in the axial direction of the connecting hole 302 to prevent the toothbrush head 8 from axially moving relative to the connecting hole 302, thereby preventing the toothbrush head 8 from escaping from the connecting hole 302 and ensuring the stability of the connection between the toothbrush head 8 and the connecting hole 302.

[0130] refer to Fig.17 , Fig.18 and Fig.19 As shown, in some embodiments provided by the present invention, the toothbrush head 8 includes a brush disc 805 , a rod body 803 and a core shaft 804 .

[0131] The rod body 803 is a tubular structure, which is sleeved on the core shaft 804 and is used to be inserted into the connecting hole 302. The rod body 803 is used to install the brush plate 805. For example, the brush plate 805 is provided with a tubular structure for the rod body 803 to be inserted. The rod body 803 is placed in the tubular structure and is engaged with the tubular structure.

[0132] The second limiting structure 304 is a first groove, and the second matching structure 802 is a first protrusion provided on the surface of the rod body 803 away from the core shaft 804, and the first protrusion is used to snap into the first groove. Similarly, the first matching structure 801 can also be provided on the rod body 803.

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

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

[0135] By configuring the rod body 803 as a tubular structure and configuring the first protrusion between two adjacent through grooves 806, the rigidity of the material between the two through grooves 806 can be reduced, making it easier for the material between the two through grooves 806 to deform in the radial direction of the rod body 803, thereby enabling the first protrusion to be displaced in the radial direction of the rod body 803, so that the first protrusion can be inserted into or removed from the first groove.

[0136] By inserting the core shaft 804 into the rod body 803, the overall rigidity of the rod body 803 can be improved, so that the rod body 803 can better transmit power between the motor 100 and the brush plate 805. By providing the second groove 807 on the core shaft 804, the material between the two through grooves 806 can be avoided, so that the first protrusion can be displaced.

[0137] In some embodiments provided by the present invention, the electric toothbrush further includes a circuit board 10 .

[0138] The circuit board 10 is disposed in the first accommodation space 503 , and the circuit board 10 is electrically connected to the motor 100 , and an operation button 1011 is disposed on the circuit board 10. For example, the operation button 1011 can be used to control the start and stop or the rotation speed of the motor 100 .

[0139] The housing 5 is provided with a second recess 508 , and the wall thickness at the location of the second recess 508 is smaller than the wall thickness at other locations of the housing 5 . The second recess 508 is arranged opposite to the operation button 1011 .

[0140] In this embodiment, a second recess 508 is provided at a position of the housing 5 corresponding to the operation button 1011, thereby reducing the wall thickness of the housing 5 at the position corresponding to the operation button 1011, so that the housing 5 at the position corresponding to the operation button 1011 is more likely to deform, so that the operator can press the operation button 1011 by pressing the housing 5. In this way, there is no need to open a hole in the housing 5, thereby improving the waterproof performance of the electric toothbrush.

[0141] In some embodiments provided by the present invention, the motor 100 includes a support 1 , a stator assembly 2 and a rotor assembly 3 .

[0142] The support 1 has a receiving cavity 103 disposed therein. An output hole 104 is disposed at one end of the support 1 close to the connection port 504 , and the output hole 104 is communicated with the receiving cavity 103 .

[0143] The stator assembly 2 is disposed in the accommodating cavity 103 . For example, the stator assembly 2 and the support 1 may be bonded or screwed.

[0144] The rotor assembly 3 is rotatably connected to the support 1 , and the rotor assembly 3 can be driven to rotate by the stator assembly 2 . Specifically, when the motor 100 is powered on, an electromagnetic force is generated between the stator assembly 2 and the rotor assembly 3 to rotate the rotor assembly 3 relative to the stator assembly 2 .

[0145] At least part of the rotor assembly 3 is disposed in the accommodating cavity 103 . That is, the rotor assembly 3 can be completely disposed in the accommodating cavity 103 , or part of the rotor assembly 3 is disposed in the accommodating cavity 103 , and the other part is disposed outside 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 to the toothbrush head 8 .

[0147] Optionally, refer 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 part of the rotor assembly 3 except the output end 301 can be arranged inside the accommodating cavity 103.

[0148] refer to Figure 2 As shown, by setting 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 toothbrush head 8, so that the size of the connecting hole 302 on the output end 301 can better adapt to the toothbrush head 8, thereby eliminating the need to adjust the size of the portion of the rotor assembly 3 located in the accommodating cavity 103, thereby avoiding size changes in the portion of the rotor assembly 3 located in the accommodating cavity 103, thereby reducing structural changes to the motor 100 and reducing the design difficulty of the motor 100.

[0149] Alternatively, the output end 301 may not extend out of the accommodating cavity 103. For example, in other embodiments, the output end 301 is disposed in the accommodating cavity 103, and the toothbrush head 8 can pass through the output hole 104 and plug into the connecting hole 302, that is, the rotor assembly 3 can be completely disposed in the accommodating cavity 103.

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

[0151] In some embodiments provided by the present invention, 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 is connected to one end of the second shaft section 305b. For example, the first shaft section 305a and the second shaft section 305b are configured as a machined integral structure or a welded integral structure. Alternatively, the first shaft section 305a and the second shaft section 305b may also be connected by bonding, threaded connection or fastener connection.

[0153] The first shaft section 305a is rotatably connected to the support 1. A connecting hole 302 is provided on the end surface of the second shaft section 305b away from the first shaft section 305a, that is, the 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 that of the first shaft section 305a.

[0154] In this embodiment, by making the diameter of the second shaft segment 305b larger than the diameter of the first shaft segment 305a, the aperture of the connecting hole 302 set on the second shaft segment 305b can be increased, so that the aperture of the connecting hole 302 is adapted to the diameter of the toothbrush head 8, thereby making the diameter of the toothbrush head 8 larger, avoiding the problem of the toothbrush head 8 being too thin and insufficient in rigidity.

[0155] In addition, by setting 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 rotatably connected to the support 1 does not need to be increased, thereby eliminating the need to increase the size of the support 1 in the radial direction of the first shaft segment 305a, 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 one 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 present invention, the support 1 includes a housing 101 and an end cover 102 .

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

[0159] The end cover 102 is connected to the housing 101 and is used to close the opening. For example, the end cover 102 is plugged into the housing 101, and a flange is provided at the edge of the opening of the housing 101, which is folded toward the inside of the opening, and the flange abuts against the side of the end cover 102 away from the housing 101, so as to limit and fix the end cover 102 and prevent the end cover 102 from being separated from the housing 101. Of course, the end cover 102 can also be bonded to the housing 101 or connected by a threaded fastener.

[0160] With such arrangement, the stator assembly 2 and the rotor assembly 3 can be installed in the housing 101 , and then the housing 101 can be closed by the end cover 102 , so as to facilitate the assembly of the motor 100 .

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

[0162] Optionally, refer to Figure 8 and Fig. 9 As shown, in some embodiments provided by the present invention, the end cover 102 includes a cover body 102a and a plug-in portion 102b.

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

[0164] The first through groove 102e extends in the radial direction of the rotor assembly 3 and penetrates the side wall of the cover body 102a in the radial direction of the rotor assembly 3. Fig. 9 As shown, the top end of the first through groove 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 groove 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 disposed at one end of the first through slot 102e close to the center of the cover 102a, and the second through slot 102f intersects and communicates with the first through slot 102e. Along the axial direction of the rotor assembly 3, both the first through slot 102e and the second through slot 102f penetrate the cover 102a.

[0166] There are two plug-in parts 102b. Both plug-in parts 102b are connected to the surface of the cover 102a close to the housing 101, and the two plug-in parts 102b are respectively arranged on both sides of the line connecting the two first through slots 102e. There is a distance between the two plug-in parts 102b.

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

[0168] In addition, by providing intersecting first through grooves 102e and second through grooves 102f at both ends of the end cover 102, and the two plug-in parts 102b are distributed on both sides of the line connecting the two first through grooves 102e, due to the provision of the first through grooves 102e and the second through grooves 102f, the structure provides a larger elastic deformation space for the cover body 102a. When the two plug-in parts 102b are subjected to extrusion force during the process of being inserted into the casing 101, the cover body 102a can be deformed by the first through grooves 102e and the second through grooves 102f, so that the plug-in parts 102b are close to each other to adapt to the space limitation inside the casing 101, thereby reducing the difficulty of inserting the end cover 102 into the casing 101, and making the plug-in part 102b press against the inner wall of the casing 101 after being inserted into the casing 101.

[0169] Furthermore, the surfaces of the two plug-in parts 102b close to each other are provided with stop blocks 102c, and the surfaces of the two stop blocks 102c close to each other are provided with arc grooves 102d. The bearing 4 is arranged between the two stop blocks 102c, and the outer circumferential surface of the bearing 4 fits with the two arc grooves 102d. In this way, the plug-in part 102b can be plugged and fixed with the housing 101, and the bearing 4 can be installed and fixed.

[0170] In some embodiments provided by the present invention, the rotor assembly 3 includes a rotating shaft 305 and a magnet structure.

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

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

[0173] The iron core 201 is connected to the support 1. The iron core 201 is connected to the support 1 by bonding or by threaded fasteners. The coil 202 is wound on the iron core 201 and is arranged opposite to the magnetic structure.

[0174] In this embodiment, by arranging the magnetic structure on the rotating shaft 305, and arranging the iron core 201 and the coil 202 on the support 1, during use, when current is passed through the coil 202, the magnetic structure drives the rotating shaft 305 to rotate under the action of the magnetic field generated by the coil 202. By adjusting the magnitude and direction of the current of the coil 202, the driving force on the magnetic structure and the rotation speed and direction of the rotating shaft 305 can be conveniently controlled.

[0175] In this arrangement, since the coil 202 is not arranged on the rotating shaft 305, that is, the coil 202 remains stationary and does not need to rotate, there is no need to set a commutator, thereby simplifying the structure of the motor and making the structure of the motor more compact. In addition, not setting a commutator can also reduce failure points, as well as reduce noise and vibration.

[0176] refer to Figure 3 and Figure 5 As shown, in some embodiments provided by the present invention, 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, with a distance between the two magnets 306. In the magnet group, the magnetic field directions of the two magnets 306 are toward and away from the rotating shaft 305, respectively.

[0178] The coil 202 is disposed opposite to the magnet group.

[0179] In this embodiment, when a first current is passed through the coil 202, a first magnetic field is generated in the coil 202, and the magnet 306 in the magnet group with the same direction as the first magnetic field is attracted and tends to approach the magnet 306, while the magnet 306 with the opposite direction to the first magnetic field is repelled and tends to move away from the magnet 306, thereby causing the rotating shaft 305 to rotate in the first rotation direction.

[0180] When the second current flows into the coil 202, a second magnetic field is generated in the coil 202, and the magnets 306 in the magnet group with the same direction as the second magnetic field are attracted and tend to approach the magnets 306, while the magnets 306 in the opposite direction to the second magnetic field are repelled and tend to move away from the magnets 306, thereby causing the rotating shaft 305 to rotate in the second rotation direction. The current directions of the first current and the second current are opposite, and the rotation directions of the first rotation direction and the second rotation direction are opposite.

[0181] With such arrangement, by changing the direction of the current of the coil 202, the motor 100 can produce a reciprocating rotation effect, so that the motor 100 can drive the toothbrush head 8 to swing back and forth, thereby cleaning the teeth.

[0182] Furthermore, the magnet structure includes at least two magnet groups, and the at least two magnet groups are arranged and distributed along the circumference of the rotating shaft 305. Figure 3 Shown is an example where the magnet structure includes two magnet groups.

[0183] Each magnet group includes two magnets 306 , and the coils 202 correspond to the magnet groups one by one, and the coils 202 are arranged opposite to the corresponding magnet groups.

[0184] In this embodiment, by providing at least two magnet groups, on the one hand, the output torque of the motor 100 can be increased to improve the cleaning effect of the electric toothbrush; on the other hand, the rotating shaft 305 is subjected to balanced force in the circumferential direction, thereby reducing noise and abnormal noise, reducing the probability of damage to the motor 100, and extending the service life of the motor 100.

[0185] refer to Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments provided by the present invention, the core 201 is configured as a sleeve structure.

[0186] The sleeve structure has a protrusion 201a on its surface facing the rotating shaft 305, and the coil 202 is wound on the protrusion 201a. For example, when there are multiple coils 202, the protrusions 201a correspond to the coils 202 one by one, and the coils 202 are wound on the corresponding protrusions 201a.

[0187] In this embodiment, the protrusion 201a can guide the magnetic lines of force more accurately and reduce magnetic leakage, that is, better concentrate the magnetic field so that the magnetic lines of force are more concentrated around the coil 202, thereby increasing the magnetic flux density and enhancing the working efficiency of the motor. In addition, the protrusion 201a can be used to fix and position the coil 202, increase the connection strength between the coil 202 and the core 201, and prevent the coil 202 from loosening.

[0188] By setting the core 201 as a sleeve structure, on the one hand, a closed magnetic circuit can be better formed, magnetic leakage can be reduced, and magnetic flux density can be increased. On the other hand, the sleeve structure itself has good mechanical strength, can withstand high mechanical stress and vibration, and extend the service life of the motor. Finally, the sleeve structure is sleeved on the outside of the magnet structure. Even if the magnet structure is separated from the rotating shaft 305, the sleeve structure can also restrict the magnet structure to prevent the magnet structure from escaping from the sleeve structure.

[0189] refer to Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments provided by the present invention, under the condition that the number of coils 202 and magnet groups is at least two, and the coils 202 are arranged opposite to the corresponding magnet groups, the stator assembly 2 further includes a stopper 203 .

[0190] The limiting member 203 is disposed between two adjacent coils 202 and is used to limit the position of the coils 202. The limiting member 203 is connected to the wall of the sleeve structure.

[0191] In this embodiment, by providing a stopper 203 between two adjacent coils 202, on the one hand, the coils 202 can be kept in the correct position, preventing the coils 202 from shifting and ensuring the stability of the coils 202. On the other hand, it can prevent the two adjacent coils 202 from contacting each other and causing a short circuit.

[0192] Optionally, the limiting member 203 may be bonded to the wall of the sleeve structure.

[0193] refer to Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments provided by the present invention, the rotor assembly 3 also includes a mounting seat 307 .

[0194] The mounting seat 307 is mounted on the rotating shaft 305, and a mounting groove 307a is provided on the surface of the mounting seat 307 away from the rotating shaft 305. The magnet structure is arranged in the mounting groove 307a, and 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 this embodiment, a mounting seat 307 is provided, and a mounting groove 307 a is provided on the mounting seat 307 , so as to facilitate the installation and fixation of the magnet 306 .

[0196] Optionally, the magnet 306 may be bonded to the inner wall of the mounting groove 307 a to prevent the magnet 306 from falling out of the mounting groove 307 a during rotation.

[0197] Optionally, the mounting seat 307 may be bonded to the rotating shaft 305 to prevent relative rotation between the mounting seat 307 and the rotating shaft 305 .

[0198] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An electric toothbrush, characterized in that: It comprises a housing (5) and a motor (100); The shell (5) is provided with a first accommodating space (503) inside, 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 end surface of the first end (501) away from the second end (502) is provided with a connecting port (504) for the toothbrush head (8) to pass through, the end surface of the second end (502) away from the first end (501) is provided with a mounting port (505) for the motor (100) to pass through, and the connecting port (504) and the mounting port (505) are both in communication with the first accommodating space (503); The motor (100) is arranged in the first accommodating space (503), and the motor (100) includes an output end (301) which is rotatably arranged and 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); a connecting hole (302) is provided on the end surface of the output end (301) close to the connecting port (504), and the connecting hole (302) is used for plugging and fixing with the toothbrush head (8).

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

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

4. The electric toothbrush according to claim 3, characterized in that: The electric toothbrush further comprises a first buffer member (11), the first buffer member (11) being configured as a sleeve structure, the first buffer member (11) being sleeved on an end of the motor (100) close to the connecting port (504), and the connecting seat (9) being sleeved on the first buffer member (11); And / or, the electric toothbrush further comprises a second buffer member (12), the second buffer member (12) being configured as a sleeve structure, the second buffer member (12) being sleeved on an end of the motor (100) away from the connecting port (504), and the second buffer member (12) being in contact with an inner wall of the outer shell (5).

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

6. The electric toothbrush according to claim 5, characterized in that: A first clamping portion (506) is provided on the inner wall of the outer shell (5) opposite to the fixing seat (7), and a first limiting portion (702) is provided on the fixing seat (7), wherein the first clamping portion (506) is used to limit the first limiting portion (702) in the circumferential direction of the outer shell (5); And / or, along the second direction (Y), a clamping arm (703) is provided between the fixing seat (7) and the housing (5), the second direction (Y) intersects with the first direction (X), the clamping arm (703) extends along the first direction (X), and one end of the clamping arm (703) close to the connecting port (504) is connected to the fixing seat (7), and there is a spacing between one end of the clamping arm (703) away from the connecting port (504) and the fixing seat (7), and 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) away from the connecting port (504), and a second limiting portion (704) is provided on the surface of the clamping arm (703) away from the fixing seat (7), and the housing (5) is provided with a second clamping portion (507), and the second clamping portion (507) is used to limit the second limiting portion (704) in the first direction (X).

7. The electric toothbrush according to claim 6, characterized in that: The fixing seat (7) is provided with an avoidance hole (705), and the avoidance hole (705) is provided between the battery (13) and an end of the clamping arm (703) away from the connection port (504); And / or, the electric toothbrush further comprises a tail cover (14), the tail cover (14) is sealed at the mounting opening (505), the tail cover (14) is connected to the housing (5), a plug-in component (1401) is provided at one end of the tail cover (14) close to the battery (13), and the plug-in component (1401) is placed on a side of the clamping arm (703) close to the battery (13).

8. The electric toothbrush according to any one of claims 1 to 4, characterized in that: A first limiting structure (303) is provided on the hole wall of the connecting hole (302), and the toothbrush head (8) is provided with a first matching structure (801), wherein the first limiting structure (303) is used to limit the first matching structure (801) in the circumferential direction of the connecting hole (302); And / or, a second limiting structure (304) is provided on the hole wall of the connecting hole (302), and a second matching structure (802) is provided on the toothbrush head (8), and the second limiting structure (304) is used to limit the second matching structure (802) in the axial direction of the connecting hole (302).

9. The electric toothbrush according to claim 8, characterized in that: The toothbrush head (8) comprises a brush disc (805), a rod body (803) and a core shaft (804); the rod body (803) is a tubular structure; the rod body (803) is sleeved on the core shaft (804) and is used to install the brush disc (805); the rod body (803) is used to be 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 core shaft (804), the rod body (803) is provided with at least two through grooves (806), and the through grooves (806) penetrate the side wall of the rod body (803) along the wall thickness direction of the rod body (803), the first protrusion is arranged between two adjacent through grooves (806), and the surface of the core shaft (804) facing the first protrusion is provided with a second groove (807).

10. The electric toothbrush according to claim 8, characterized in that The first limiting structure (303) is a second protrusion provided on the hole wall of the connecting hole (302); the toothbrush head (8) comprises a rod body (803) for mounting a brush disc (805); the rod body (803) is used to be inserted into the connecting hole (302); the first matching structure (801) is a first depression provided on the side wall of the rod body (803); along the axial direction of the rod body (803), the first depression extends to the end face of the rod body (803) facing away from the brush disc (805).

11. The electric toothbrush according to any one of claims 1 to 4, characterized in that: The electric toothbrush further comprises a circuit board (10), the circuit board (10) being arranged in the first accommodating space (503), the circuit board (10) being electrically connected to the motor (100), and an operating button (1011) being arranged on the circuit board (10); The housing (5) is provided with a second recess (508), and the wall thickness at the location of the second recess (508) on the housing (5) is smaller than the wall thickness at other locations of the housing (5), and the second recess (508) is arranged opposite to the operation button (1011).

12. The electric toothbrush according to any one of claims 1 to 4, characterized in that: The motor (100) comprises: A support (1) having a receiving cavity (103) therein, an output hole (104) being provided at one end of the support (1) close to the connection port (504), the output hole (104) being in communication with the receiving cavity (103); A stator assembly (2) is arranged in the accommodating cavity (103); a rotor assembly (3) rotatably connected to the support (1); at least a portion of the rotor assembly (3) is disposed within the accommodating cavity (103); and along the first direction (X), an end of the rotor assembly (3) close to the connecting port (504) is configured as the output end (301); The rotor assembly (3) passes through the output hole (104), and the output end (301) is arranged outside the accommodating cavity (103); or, the output end (301) is arranged inside the accommodating cavity (103), and the toothbrush head (8) passes through the output hole (104) and is plugged into the connecting hole (302).

13. The electric toothbrush according to claim 12, characterized in that: The rotor assembly (3) comprises a rotating shaft (305), wherein the rotating shaft (305) comprises a first shaft segment (305a) and a second shaft segment (305b), wherein the first shaft segment (305a) and the second shaft segment (305b) both extend along the first direction (X), and one end of the first shaft segment (305a) is connected to one end of the second shaft segment (305b); The first shaft section (305a) is rotatably connected to the support (1), the connecting hole (302) is provided on the end surface of the second shaft section (305b) facing away from the first shaft section (305a), and the diameter of the second shaft section (305b) is larger than the diameter of the first shaft section (305a).

14. The electric 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) being rotatably connected to the support (1), and the magnet structure being connected to the rotating shaft (305); The stator assembly (2) comprises an iron core (201) and a coil (202); the iron core (201) is connected to the support (1); the coil (202) is wound around the iron core (201) and is arranged opposite to the magnetic structure.

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