CN212850215U - Toothbrush core and electric toothbrush - Google Patents

Abstract

The utility model discloses a toothbrush core and electric toothbrush relates to electric toothbrush technical field. The toothbrush core comprises a bracket, an end cover, a rotor and a stator. The vibration space and the vibration hole are formed in the support, the rotor can be inserted into the vibration space through the vibration hole, the end cover is arranged in the vibration hole, the rotating shaft of the rotor is sleeved with the end cover, and therefore the end cover is connected with the rotating shaft in a rotating mode. The stator is arranged on the bracket and corresponds to the rotor, and one end of the rotating shaft, which extends out of the vibration hole, is used for being connected with the brush head so as to drive the brush head to vibrate. The toothbrush core and the electric toothbrush have the characteristic of small volume.

Description

Toothbrush core and electric toothbrush

Technical Field

The utility model relates to an electric toothbrush technical field particularly, relates to a toothbrush core and electric toothbrush.

Background

The existing electric toothbrush generally comprises a motor, a bracket and a shell, wherein the motor is wrapped by the bracket, the bracket is arranged in the shell, and the size of the bracket is larger, so that the size of the shell is larger.

In view of the above, it is important to develop a toothbrush core and an electric toothbrush that can solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a toothbrush core, it has the less characteristics of volume.

Another object of the present invention is to provide an electric toothbrush, which has a smaller size.

The utility model provides a technical scheme:

in a first aspect, an embodiment of the present invention provides a toothbrush core, including a bracket, an end cap, a rotor, and a stator; the support is provided with a vibration space and a vibration hole, the rotor can be inserted into the vibration space through the vibration hole, and the end cover is arranged in the vibration hole and sleeved on the rotating shaft of the rotor so as to be rotatably connected with the rotating shaft; the stator is arranged on the support and corresponds to the rotor, and one end of the rotating shaft, which extends out of the vibration hole, is used for being connected with the brush head so as to drive the brush head to vibrate.

With the first aspect in combination, in a first implementation manner of the first aspect, a first clamping portion is arranged on the end cover, a second clamping portion is arranged on the support, and the first clamping portion is clamped with the second clamping portion to mount the end cover in the vibration hole.

With the first aspect and the foregoing implementation manner thereof, in a second implementation manner of the first aspect, the second clamping portion is located on an inner wall of the vibration hole, and the end cover can be inserted into the vibration hole, so that the first clamping portion is clamped with the second clamping portion.

With reference to the first aspect and the foregoing implementation manner, in a third implementation manner of the first aspect, a limiting protrusion is convexly arranged on the end cover, a limiting groove matched with the limiting protrusion is formed in the inner wall of the vibration hole, and the limiting groove extends to one end, far away from the vibration space, of the vibration hole; the first clamping portion is located at the tail end of the limiting protrusion, the second clamping portion is located at the bottom wall of the limiting groove, and the limiting protrusion is located in the limiting groove to limit the end cover to rotate in the vibration hole.

With reference to the first aspect and the foregoing implementation manner, in a fourth implementation manner of the first aspect, the first clamping portions are two protrusions protruding from the ends of the limiting protrusions, and the two first clamping portions are arranged at intervals; the second joint portion is for seting up in recess on the spacing recess diapire, and quantity is two, two second joint portions one by one and two first joint portion joint, just the partial diapire of spacing recess is located two between the first joint portion.

With reference to the first aspect and the foregoing implementation manner, in a fifth implementation manner of the first aspect, a guide inclined plane is disposed on the limiting protrusion, and the guide inclined plane extends along an edge of an end face of the limiting protrusion, the end face of the limiting protrusion being close to one end of the vibration space, and is deviated from a center of the end face.

With reference to the first aspect and the foregoing implementation manner, in a sixth implementation manner of the first aspect, an end surface of the end cover, which is close to the vibration space, is provided with a mounting groove, a bearing of the rotor is sleeved on the rotating shaft, and the bearing is mounted in the mounting groove to rotatably connect the end cover and the rotating shaft.

With reference to the first aspect and the foregoing implementation manner, in a seventh implementation manner of the first aspect, the rotor further includes an elastic sheet, a clamping groove is formed in an inner wall of the vibration space, one end of the elastic sheet is connected with one end of the rotating shaft, which is far away from the brush head, and the other end of the elastic sheet is clamped in the clamping groove.

With reference to the first aspect and the foregoing implementation manner, in an eighth implementation manner of the first aspect, the toothbrush core further includes a first positioning element, and the first positioning element penetrates through the elastic sheet and is connected to the bracket to fix one end of the elastic sheet in the clamping groove.

In a second aspect, an embodiment of the present invention further provides an electric toothbrush, which includes a brush head and the toothbrush core, wherein the toothbrush core includes a bracket, an end cap, a rotor, and a stator; the support is provided with a vibration space and a vibration hole, the rotor can be inserted into the vibration space through the vibration hole, and the end cover is arranged in the vibration hole and sleeved on the rotating shaft of the rotor so as to be rotatably connected with the rotating shaft; the stator is arranged on the support and corresponds to the rotor, and one end of the rotating shaft, which extends out of the vibration hole, is connected with the brush head so as to drive the brush head to vibrate.

Compared with the prior art, the embodiment of the utility model provides a toothbrush core includes for prior art's beneficial effect:

the vibration space and the vibration hole have been seted up on the support, and the rotor can insert the vibration space from the vibration hole, and the stator is installed in the support, and corresponds with the rotor, and the end cover sets up in the vibration hole, and the pivot of rotor is located to the cover to rotate with the pivot and be connected, and then form vibrating motor, and the one end of pivot stretches out the vibration space through the vibration hole, and the one end that stretches out the vibration hole is used for being connected with the brush head, thereby drives the vibration of brush head. This toothbrush core is through installing rotor and stator on the support to realize through the end cover that the rotor is installed in the vibration space, with directly form vibrating motor on the support, thereby make the toothbrush core need not to set up motor housing, its whole volume is less.

The embodiment of the utility model provides an electric toothbrush is the same with foretell toothbrush core for prior art's beneficial effect for prior art's beneficial effect, no longer gives unnecessary details here.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.

Fig. 1 is a schematic structural view of a toothbrush core applied to an electric toothbrush according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a toothbrush core provided by an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of the structure at a-a in fig. 2.

Fig. 4 is an exploded schematic view of a toothbrush core according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of an end cap of a toothbrush core according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a bracket of a toothbrush movement according to an embodiment of the present invention.

Fig. 7 is a partially cut-away schematic structural view of a toothbrush cartridge provided by an embodiment of the present invention.

Fig. 8 is an enlarged view of the structure at VIII in fig. 7.

Icon: 100-an electric toothbrush; 20-a brush head; 30-a housing; 10-a toothbrush cartridge; 11-a scaffold; 111-connecting projections; 1111-limit groove; 1112-a second snap-in part; 112-a containing space; 113-a vibration space; 1131-vibrating aperture; 1132-a catch groove; 1133-holding hole; 1134-holding groove; 12-an end cap; 121-a limiting bulge; 122-a guide ramp; 123-a first clamping part; 125-mounting grooves; 13-a vibration motor; 131-a rotor; 1312-a rotating shaft; 1313-bearings; 1315-spring plate; 132-a stator; 15-a battery; 16-a sealing ring; 18-a first positioning member; 19-second positioning element.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The terms "upper", "lower", "inner", "outer", "left", "right", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally used to place the products of the present invention, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or component being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It is also to be understood that, unless expressly stated or limited otherwise, the terms "disposed," "connected," and the like are intended to be open-ended, and mean "connected," i.e., fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

Example (b):

referring to fig. 1, fig. 1 is a schematic structural view of a toothbrush core 10 applied to an electric toothbrush 100 according to an embodiment of the present invention.

The embodiment of the utility model provides a toothbrush core 10, this toothbrush core 10 has the less characteristics of volume. The toothbrush movement 10 can be applied to scenes needing vibration, such as a depilating instrument, a beauty instrument, a skin tendering instrument, a tooth flushing device and the like. Of course, it can also be used independently.

Taking the example of applying the toothbrush core 10 to the electric toothbrush 100, the electric toothbrush 100 includes a brush head 20 and a toothbrush core 10, the brush head 20 is connected to the toothbrush core 10 to drive the brush head 20 to vibrate through the toothbrush core 10, of course, the electric toothbrush 100 further includes a housing 30, the toothbrush core 10 is disposed in the housing 30, and a rotation shaft 1312 of the toothbrush core 10 extends out of one end of the housing 30 to be connected to the brush head 20. Because the electric toothbrush 100 adopts the toothbrush core 10 provided by the embodiment of the present invention, the electric toothbrush 100 also has the characteristic of small volume.

The structure, operation principle and advantageous effects of the toothbrush core 10 according to the embodiment of the present invention will be described in detail below.

Referring to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic structural diagram of a toothbrush movement 10 according to an embodiment of the present invention. Fig. 3 is an enlarged schematic view of the structure at a-a in fig. 2. Fig. 4 is an exploded schematic view of a toothbrush core 10 according to an embodiment of the present invention.

The toothbrush movement 10 comprises a support 11, an end cover 12, a rotor 131 and a stator 132, wherein a vibration space 113 and a vibration hole 1131 are formed in the support 11, the rotor 131 can be inserted into the vibration space 113 from the vibration hole 1131, the stator 132 is mounted on the support 11 and corresponds to the rotor 131, the end cover 12 is disposed in the vibration hole 1131 and is sleeved on a rotating shaft 1312 of the rotor 131, so as to be rotatably connected with the rotating shaft 1312 to form a vibration motor 13, one end of the rotating shaft 1312 extends out of the vibration space 113 through the vibration hole 1131, and one end extending out of the vibration hole 1131 is used for being connected with a brush head 20, so as to drive the brush head 20 to vibrate. The rotor 131 and the stator 132 are mounted on the bracket 11, and the mounting of the rotor 131 in the vibration space 113 is realized through the end cover 12, so that the vibration motor 13 is directly formed on the bracket 11, and thus the toothbrush movement 10 does not need to be provided with the motor housing 30, and the whole volume is small.

It should be noted that the toothbrush movement 10 further includes a battery 15, the battery 15 is assembled in an accommodating space 112 formed on the bracket 11, so as to simultaneously complete the installation of the vibration motor 13 and the battery 15 through the bracket 11, and in this embodiment, the bracket 11 is an integrally formed bracket 11, so as to further reduce the volume of the bracket 11. In addition, the toothbrush core 10 may further include a sealing ring 16, the sealing ring 16 is sleeved on the rotation shaft 1312 and the end cap 12, and when the toothbrush core 10 is disposed in the casing 30, the sealing ring 16 abuts against the casing 30 to prevent impurities such as water from entering the casing 30 through a position near the rotation shaft 1312.

With continuing reference to fig. 3 and 4, and with further reference to fig. 5 and 6, fig. 5 is a schematic structural view of end cap 12 of toothbrush cartridge 10 according to an embodiment of the present invention. Fig. 6 is a schematic structural diagram of a bracket 11 of a toothbrush movement 10 according to an embodiment of the present invention.

Can be equipped with first joint portion 123 on end cover 12, can be equipped with second joint portion 1112 on support 11, first joint portion 123 and second joint portion 1112 joint to installation end cover 12 is in vibration hole 1131, and the joint mode is convenient for assemble, thereby improves the efficiency of assembly toothbrush core 10.

It is understood that in other embodiments, the end cap 12 may be attached to the vibrating aperture 1131 by other means, such as adhesive or threaded attachment.

Further, the second clamping portion 1112 can be located on the inner wall of the vibration hole 1131, and the end cap 12 can be inserted into the vibration hole 1131, so that the first clamping portion 123 is clamped with the second clamping portion 1112, in other words, the end cap 12 is disposed in the vibration hole 1131, so that the inner wall of the vibration hole 1131 covers the end cap 12, and the stability of the end cap 12 mounted on the bracket 11 is improved.

It should be noted that, in the present embodiment, the end cover 12 is provided in a column shape, and the side surface of the end cover 12 is matched with the inner wall of the vibration hole 1131, so as to further improve the stability of the end cover 12 mounted in the vibration hole 1131.

In addition, a mounting groove 125 is opened on an end surface of the end cover 12 near the vibration space 113, a bearing 1313 of the rotor 131 is sleeved on the rotating shaft 1312, and the bearing 1313 is mounted on the mounting groove 125 to rotatably connect the end cover 12 and the rotating shaft 1312 through the bearing 1313. And the end cap 12 is positioned in the vibration hole 1131, so that the end cap 12 is not easily deformed in the radial direction, and the mounting stability of the bearing 1313 in the mounting groove 125 is improved.

Further, end cover 12 epirelief is equipped with spacing arch 121, has seted up spacing recess 1111 on the inner wall of vibration hole 1131, and this spacing recess 1111 matches with spacing arch 121, and spacing recess 1111 extends to the vibration hole 1131 and keeps away from the one end of vibration space 113, and first joint portion 123 is located the end of spacing arch 121, and second joint portion 1112 is located the diapire of spacing recess 1111, and spacing arch 121 is located spacing recess 1111 to restriction end cover 12 is in the rotation of vibration hole 1131. In other words, the limiting protrusion 121 is located in the limiting recess 1111, so as to limit the rotation of the end cap 12 around its axis, so as to assemble the end cap 12 in the vibration hole 1131 at a predetermined angle.

Further, first joint portion 123 can be protruding the terminal arch of locating spacing arch 121, and second joint portion 1112 can be for seting up the recess on spacing recess 1111 diapire, at the in-process of impressing end cover 12 in the vibration hole 1131, spacing arch 121 is impressed simultaneously in spacing recess 1111, and when end cover 12 reachd preset position, first joint portion 123 is impressed in second joint portion 1112 to with second joint portion 1112 joint, thereby accomplish the assembly of end cover 12.

It is understood that in other embodiments, the first engaging portion 123 can also be a groove formed at the end of the limiting protrusion 121, and the second engaging portion 1112 can also be a protrusion protruding from the bottom wall of the limiting groove 1111.

In addition, the number of the first clamping portions 123 may be two, and the two first clamping portions 123 are disposed at intervals. The number of the second clamping portions 1112 can be two, two second clamping portions 1112 are clamped with two first clamping portions 123 one by one, and a part of the bottom wall of the limiting groove 1111 is located between the two first clamping portions 123, so as to limit the position of the first clamping portions 123 relative to the second clamping portions 1112, and further improve the stability of the clamping of the first clamping portions 123 and the second clamping portions 1112.

It should be noted that, the connecting protrusion 111 is disposed on the bracket 11, when the movement is assembled in the housing 30, the connecting protrusion 111 abuts against the inner wall of the housing 30, and the connecting protrusion 111 corresponds to the limiting groove 1111, so as to reduce the probability of radial deformation of the position of the limiting groove 1111 on the vibration hole 1131, and improve the stability of the end cover 12 mounted in the vibration hole 1131.

Further, a guide inclined plane 122 may be disposed on the limiting protrusion 121, and the guide inclined plane 122 extends along an edge of an end surface of the limiting protrusion 121 near one end of the vibration space 113, and is disposed to be inclined to a center of the end surface. As shown in fig. 5, in this way, during the process of pressing the end cap 12 into the vibration hole 1131, the limit protrusion 121 may be guided to the center of the limit recess 1111 by the guide slope 122, so that the limit protrusion 121 is pressed into the limit recess 1111.

It should be noted that the guiding inclined surface 122 may extend to an end of the first clamping portion 123 far away from the limiting protrusion 121, so that the first clamping portion 123 is clamped in the second clamping portion 1112.

With continuing reference to fig. 3, and with reference to fig. 7 and 8, fig. 7 is a partially cut-away schematic structural view of the toothbrush movement 10 according to the embodiment of the present invention. Fig. 8 is an enlarged view of the structure at VIII in fig. 7.

The rotor 131 may further include a spring 1315, the inner wall of the vibration space 113 is provided with a retaining groove 1132, one end of the spring 1315 is connected to one end of the rotating shaft 1312 far from the brush head 20, and the other end is retained in the retaining groove 1132. Thus, when the rotor 131 is assembled, only one end of the elastic sheet 1315 far away from the rotating shaft 1312 needs to be inserted into the clamping groove 1132, and then the assembly of one end of the rotor 131 can be completed, so that the convenience degree of assembling the toothbrush movement 10 is improved.

Further, the toothbrush core 10 may further include a first positioning element 18, wherein the first positioning element 18 penetrates through the resilient piece 1315 and is connected to the bracket 11 to fix one end of the resilient piece 1315 in the retaining groove 1132, so as to improve the stability of the resilient piece 1315 connected to the retaining groove 1132.

It should be noted that, in the present embodiment, the first positioning element 18 is a pin, and in other embodiments, the first positioning element 18 may also be a connecting element such as a screw.

Further, the toothbrush core 10 further includes a second positioning element 19, and the inner wall of the vibration space 113 may further be provided with a support hole 1133, an opening direction of the support hole 1133 is a thickness direction of the elastic sheet 1315, the second positioning element 19 is disposed in the support hole 1133 and is used for supporting against the elastic sheet 1315 to limit a swing amplitude of the elastic sheet 1315, or the elastic sheet 1315 is clamped by the two positioning elements together to adjust a deformation length of the elastic sheet 1315.

Furthermore, the inner wall of the vibration space 113 may further be provided with a supporting groove 1134, the supporting groove 1134 extends along the opening direction of the clamping hole, and the second positioning member 19 is partially located in the supporting groove 1134, so as to limit the position of the second positioning member 19 through the supporting groove 1134, thereby improving the stability of the second positioning member 19. In this embodiment, the second positioning element 19 may be a connecting element such as a bolt.

The embodiment of the utility model provides a toothbrush core 10's theory of operation is:

the bracket 11 is provided with a vibration space 113 and a vibration hole 1131, the rotor 131 can be inserted into the vibration space 113 from the vibration hole 1131, the stator 132 is installed on the bracket 11 and corresponds to the rotor 131, the end cover 12 is installed in the vibration hole 1131 and is sleeved on the rotating shaft 1312 of the rotor 131, so as to be rotatably connected with the rotating shaft 1312 to form the vibration motor 13, and one end of the rotating shaft 1312 extends out of the vibration space 113 through the vibration hole 1131, and the other end extending out of the vibration hole 1131 is used for being connected with the brush head 20, so as to drive the brush head 20 to vibrate. The toothbrush movement 10 is formed by installing the rotor 131 and the stator 132 on the bracket 11 and installing the rotor 131 in the vibration space 113 through the end cover 12, so that the vibration motor 13 is directly formed on the bracket 11, and the toothbrush movement 10 does not need to be provided with the motor housing 30, and the whole volume is small.

In summary, the following steps:

the embodiment of the utility model provides a toothbrush core 10, it has the less characteristics of volume.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that the features in the above embodiments may be combined with each other without conflict, and various modifications and variations of the present invention are possible. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The present embodiments are to be considered as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A toothbrush movement is characterized by comprising a bracket (11), an end cover (12), a rotor (131) and a stator (132);

the bracket (11) is provided with a vibration space (113) and a vibration hole (1131), the rotor (131) can be inserted into the vibration space (113) through the vibration hole (1131), and the end cover (12) is arranged in the vibration hole (1131) and sleeved on a rotating shaft (1312) of the rotor (131) so as to be rotatably connected with the rotating shaft (1312);

the stator (132) is mounted on the bracket (11) and corresponds to the rotor (131), and one end of the rotating shaft (1312) extending out of the vibration hole (1131) is used for being connected with the brush head (20) so as to drive the brush head (20) to vibrate.

2. The toothbrush movement according to claim 1, wherein a first clamping portion (123) is provided on the end cap (12), a second clamping portion (1112) is provided on the bracket (11), and the first clamping portion (123) is clamped with the second clamping portion (1112) to mount the end cap (12) to the vibration hole (1131).

3. The toothbrush movement according to claim 2, wherein the second snap-in portion (1112) is located on an inner wall of the vibration hole (1131), and the end cap (12) can be inserted into the vibration hole (1131) to snap-in the first snap-in portion (123) and the second snap-in portion (1112).

4. The toothbrush movement according to claim 3, wherein a limit protrusion (121) is convexly arranged on the end cover (12), a limit groove (1111) matched with the limit protrusion (121) is formed on the inner wall of the vibration hole (1131), and the limit groove (1111) extends to one end of the vibration hole (1131) far away from the vibration space (113);

first joint portion (123) are located the end of spacing arch (121), second joint portion (1112) are located the diapire of spacing recess (1111), spacing arch (121) are located in spacing recess (1111), in order to restrict end cover (12) in vibration hole (1131) internal rotation.

5. The toothbrush movement according to claim 4, wherein the first clamping portions (123) are two protrusions protruding from the end of the limiting protrusion (121), and the two first clamping portions (123) are arranged at intervals;

second joint portion (1112) are for offering in recess on spacing recess (1111) diapire, and quantity is two, two second joint portions (1112) one by one and two first joint portion (123) joint, just the part diapire of spacing recess (1111) is located two between first joint portion (123).

6. The toothbrush movement according to claim 4, wherein a guide slope (122) is provided on the limit protrusion (121), and the guide slope (122) extends along an edge of an end surface of the limit protrusion (121) near one end of the vibration space (113) and is disposed to be biased toward a center of the end surface.

7. The toothbrush movement according to claim 3, wherein a mounting groove (125) is formed in an end surface of the end cover (12) close to the vibration space (113), a bearing (1313) of the rotor (131) is sleeved on the rotating shaft (1312), and the bearing (1313) is mounted in the mounting groove (125) to rotatably connect the end cover (12) and the rotating shaft (1312).

8. The toothbrush core according to any one of claims 1 to 7, wherein the rotor (131) further comprises a resilient piece (1315), a retaining groove (1132) is formed in an inner wall of the vibration space (113), one end of the resilient piece (1315) is connected to one end of the rotating shaft (1312) far away from the brush head (20), and the other end of the resilient piece is retained in the retaining groove (1132).

9. The toothbrush cartridge according to claim 8, wherein the toothbrush cartridge (10) further comprises a first positioning member (18), the first positioning member (18) penetrates through the resilient piece (1315) and is connected to the bracket (11) to fix one end of the resilient piece (1315) in the retaining groove (1132).

10. An electric toothbrush, comprising a brush head (20) and a toothbrush cartridge (10) according to any one of claims 1 to 9, the brush head (20) being connected to the spindle (1312).

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