CN219579102U - Movement, brush handle and electric toothbrush - Google Patents

Abstract

The utility model discloses a machine core, a brush handle and an electric toothbrush, wherein the machine core comprises a mounting bracket, a motor and a circuit board; the motor is arranged on the mounting bracket and comprises a driving part and a transmission part, the transmission part is in transmission connection with the driving part, and the transmission part and the driving part are arranged along a first preset direction; the circuit board is arranged on the mounting bracket, extends along a first preset direction and is positioned at one side of the motor along a second preset direction; the orthographic projection of the circuit board on the first plane is spaced from the orthographic projection of the transmission part on the first plane, and the first plane is perpendicular to the second preset direction. The circuit board is not overlapped with the transmission part in the second preset direction, so that the influence of vibration of the transmission part on the circuit board can be reduced, the circuit board is prevented from loosening and the like caused by vibration influence during assembly between the circuit board and the mounting bracket, and electronic elements on the circuit board can be prevented from being invalid due to vibration, keys on the circuit board are prevented from being touched by mistake and the like.

Description

Movement, brush handle and electric toothbrush

Technical Field

The utility model relates to the technical field of oral cavity cleaning, in particular to a machine core, a brush handle and an electric toothbrush.

Background

The motor of the electric toothbrush generally comprises a mounting bracket, a circuit board, a motor and the like, the motor and the circuit board are both mounted on the mounting bracket, the motor comprises a driving part and a transmission part, vibration of the transmission part is large, vibration of the circuit board is large, and accordingly assembly between the circuit board and the mounting bracket is affected.

Disclosure of Invention

The utility model provides a machine core, a brush handle and an electric toothbrush, which can reduce the vibration transmitted to a circuit board by a transmission part and prevent the assembly between the circuit board and a mounting bracket from being influenced by the vibration of the transmission part.

In a first aspect, the present utility model provides a movement comprising: the mounting bracket extends along a first preset direction; the motor is arranged on the mounting bracket and comprises a driving part and a transmission part, the transmission part is in transmission connection with the driving part, and the transmission part and the driving part are distributed along the first preset direction; the circuit board is arranged on the mounting bracket, extends along the first preset direction, and is positioned at one side of the motor along a second preset direction, and the second preset direction is perpendicular to the first preset direction; the orthographic projection of the circuit board on a first plane is spaced from orthographic projection of the transmission part on the first plane, and the first plane is perpendicular to the second preset direction.

In some embodiments of the utility model, the mounting bracket comprises: the circuit board is arranged on the first bracket; the second support, with first support is followed the first direction of predetermineeing is arranged, and with first support components of a whole that can function independently sets up, the motor install in the second support, just drive portion is located drive portion is kept away from one side of first support. The first support and the second support are used for installing the circuit board and the motor respectively, and the first support and the second support are arranged in a split mode, so that vibration transmitted to the circuit board by the installing support can be weakened, and the influence of vibration of the transmission part on the circuit board can be further reduced.

In some embodiments of the utility model, the movement further comprises a battery, the first bracket has a first mounting cavity, the second bracket has a second mounting cavity, the battery is mounted in the first mounting cavity, and the motor is mounted in the second mounting cavity. Install the battery at first support, can reduce the vibrations of drive portion and to the influence of battery, prevent that the battery from appearing contacting failure.

In some embodiments of the present utility model, an elastic buffer member is disposed between the first bracket and the second bracket, and the first bracket is connected to the second bracket through the elastic buffer member. When the vibration generated by the transmission part arranged on the second bracket is transmitted to the first bracket through the second bracket, the vibration is weakened by the elastic buffer piece, so that the influence of the vibration of the transmission part on the circuit board can be further reduced.

In some embodiments of the utility model, the elastic buffer comprises: the buffer gasket is arranged at one end of the second bracket, which is close to the first bracket, and is connected with the second bracket; and the elastic piece extends along the first preset direction, the first end of the elastic piece is connected with the buffer gasket, and the second end of the elastic piece is connected with the first bracket. The buffer gasket and the elastic piece are elastic, so that the buffer gasket and the elastic piece have damping effect, and the influence of vibration of the transmission part on the circuit board can be greatly reduced.

In some embodiments of the utility model, the circuit board comprises: a first portion mounted to the mounting bracket; and the second part is connected with the first part, and the orthographic projection of the second part on the first plane is at least partially overlapped with the orthographic projection of the driving part on the first plane. By arranging the circuit board to have the second part which is at least partially overlapped with the driving part in the first preset direction, the use area of the circuit board can be increased on the basis of reducing the influence of the vibration of the transmission part on the circuit board, so that the circuit board can be ensured to have enough area to arrange the electronic element.

In some embodiments of the utility model, the mounting bracket comprises: a first bracket to which the first portion is mounted; the second bracket is arranged along the first preset direction with the first bracket, is arranged separately from the first bracket, is installed on the second bracket, and is positioned on one side of the driving part far away from the first bracket; wherein, the installing support still includes: the bearing part is connected with the first bracket, at least part of the bearing part is positioned between the second part and the second bracket, at least part of the second part is borne by the bearing part, and the orthographic projection of the bearing part on the first plane is spaced from the orthographic projection of the transmission part on the first plane. The bearing part can be utilized to provide support for the second part, so that the second part is prevented from being in a suspended state, the structural strength of the second part can be improved, and the second part is not easy to damage.

In some embodiments of the present utility model, the second portion is provided with a key, and an orthographic projection of the key on the first plane coincides with an orthographic projection of the bearing portion on the first plane. The bearing part can be used for supporting the keys, so that the influence on the performance of the circuit board caused by easy stress deformation of the circuit board when the keys are stressed is prevented.

In some embodiments of the present utility model, a first hook is disposed on one of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion, a slot is disposed on the other of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion, and the first hook is inserted into the slot and is hooked with the slot; the distance between the driving part and the clamping groove along the second preset direction is larger than the length of the part, inserted into the clamping groove, of the first clamping hook along the second preset direction. The bearing part is prevented from shaking greatly due to suspension; in addition, through the setting of the drive part with the draw-in groove is in the interval of second default direction for the part that first trip inserted in the draw-in groove keeps certain interval with the drive part, makes even drive part to take place vibrations by drive part influence, also be difficult to take place the scraping between first trip and the drive part, prevents that the insulating layer of drive part from being scraped by first trip and bad the condition such as short circuit that leads to appearing.

In some embodiments of the present utility model, the clamping groove includes an access groove body and a limit groove body, where the limit groove body extends along the first preset direction and is communicated with the access groove body; the first clamping hook comprises a first hooking part and a connecting part, and the first hooking part is connected with the bearing part through the connecting part; the length of the access groove body along the third preset direction is greater than the length of the first hooking part along the third preset direction, the length of the first hooking part along the third preset direction is greater than the width of the limit groove body along the third preset direction, the width of the limit groove body along the third preset direction is greater than the width of the connecting part along the third preset direction, the third preset direction is perpendicular to the first preset direction and the second preset direction, and the first hooking part passes through the access groove body to access the clamping groove. The position of the bearing part can be adjusted, and the bearing part is convenient to install on the second bracket.

In some embodiments of the present utility model, an elastic clamping member is disposed on one of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion, and a bayonet is disposed on the other of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion, and the elastic clamping member is clamped to the bayonet. The elastic clamping piece stretches into the bayonet to be clamped with the bayonet, so that the bearing part is fixedly connected with the second bracket, and the bearing part is connected with the second bracket more stably.

In some embodiments of the present utility model, the front projection of the first hook on the first plane coincides with the front projection of the second portion on the first plane. The orthographic projection of the circuit board on the first plane covers the orthographic projection of the first clamping hook on the first plane, so that the structural strength of the bearing part at the part corresponding to the first clamping hook can be improved, and the bearing plate is prevented from being broken when the first clamping hook is stressed.

In some embodiments of the present utility model, an elastic buffer member is disposed between the first bracket and the second bracket, and the first bracket is connected to the second bracket through the elastic buffer member; the elastic buffer piece comprises a buffer gasket and an elastic piece, and the buffer gasket is arranged at one end of the second bracket, which is close to the first bracket, and is connected with the second bracket; the elastic piece extends along the first preset direction, one end of the elastic piece is connected with the buffer gasket, and the other end of the elastic piece is connected with the first bracket; the buffer gasket is provided with a positioning groove, and the positioning protrusion is clamped in the positioning groove; the bearing part is provided with a connecting groove towards one side of the second bracket, and the buffer gasket is provided with a connecting protrusion which is clamped in the connecting groove. The buffer gasket is fixed on the second support through the clamping connection of the positioning protrusion and the positioning groove, and the buffer gasket is connected with the bearing part through the clamping connection of the connecting protrusion and the connecting groove, so that the buffer gasket can be prevented from falling off, and meanwhile, the connection strength of the bearing part and the second support can be enhanced.

In some embodiments of the present utility model, a limiting protrusion is further disposed on a side of the bearing portion facing the second support, the limiting protrusion and the bearing portion form a limiting groove, and the first end of the elastic member extends into the limiting groove; the buffer gasket is provided with a clamping protrusion towards one side of the first support, and the second end of the elastic piece is sleeved on the clamping protrusion. The buffer connection of the bearing part and the second support is realized through the elastic piece and the buffer gasket, the first end of the elastic piece is limited through the limiting groove, the second end of the elastic piece is limited through the clamping protrusion, so that the elastic piece is prevented from falling off, and meanwhile, the elastic expansion direction of the elastic piece can be limited.

In some embodiments of the present utility model, a fixing member is disposed on a side of the first bracket facing the first portion, and the fixing member is connected to the first portion; the first support is provided with a first end part facing the second support and a second end part opposite to the first end part, and the distance between the fixing piece and the first end part along the first preset direction is larger than the distance between the fixing piece and the second end part along the first preset direction. Through the connection of mounting and first part, can fix the first part on the circuit board, prevent that the circuit board from separating because of vibrations and first support.

In some embodiments of the present utility model, a second hook is disposed on a side of the bearing portion away from the second bracket, the second hook includes a second hooking portion, the second portion is located between the second hooking portion and the bearing portion, and the second hook is used for fixedly mounting the second portion to the bearing portion; the distance between the second clamping hook and the transmission part along the first preset direction is smaller than the distance between the second clamping hook and the first bracket along the first preset direction. The second clamping hook is used for fixing the second part on the circuit board, so that the circuit board is prevented from being separated from the first bracket due to vibration.

In a second aspect, the present utility model also provides a handle comprising a housing having a cavity and a movement as described in any of the embodiments above, the movement being located in the cavity.

In a third aspect, the present utility model also provides an electric toothbrush comprising a brush head and a handle as described in any of the embodiments above, the brush head being mounted to the cartridge.

The beneficial effects of the utility model are as follows: the circuit board is arranged to be in front projection on the first plane and the transmission part is in front projection on the first plane at intervals, namely, the circuit board is not overlapped with the transmission part in the second preset direction, so that the influence of vibration of the transmission part on the circuit board can be reduced, the condition that the circuit board is loosened due to the influence of vibration on the assembly between the circuit board and the mounting bracket is prevented, and the occurrence of the conditions that an electronic element on the circuit board is invalid due to vibration, a key on the circuit board is touched by mistake and the like can also be prevented.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of a movement according to an embodiment of the present utility model at a first viewing angle;

FIG. 2 is a schematic view of a portion of a movement according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of a movement according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a motor, a second bracket and an elastic buffer according to an embodiment of the utility model;

FIG. 5 is a schematic view of a movement according to a second embodiment of the present utility model;

FIG. 6 is a schematic view of the structure of a handle according to an embodiment of the present utility model;

fig. 7 is a schematic view showing a structure of an electric toothbrush according to an embodiment of the present utility model.

Reference numerals:

10. a mounting bracket; 11. a first bracket; 111. a first mounting cavity; 12. a second bracket; 121. a second mounting cavity; 13. a carrying part; 14. positioning the bulge; 15. a limit protrusion; 16. a limit groove; 17. a fixing member; 18. a second hook; 181. a second hooking portion; 19. a connecting groove; 20. a motor; 21. a driving section; 22. a transmission part; 23. an output shaft; 30. a circuit board; 31. a first portion; 32. a second portion; 33. a key; 40. a battery; 50. an elastic buffer member; 51. a buffer pad; 511. a positioning groove; 52. an elastic member; 53. a clamping protrusion; 54. a connection protrusion; 61. a first hook; 611. a first hooking portion; 612. a connection part; 62. a clamping groove; 621. an access slot; 622. a limit groove body; 63. an elastic clamping piece; 64. a bayonet; 70. a housing; 71. a receiving chamber; 80. a brush head.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a machine core, a brush handle and an electric toothbrush, which are used for solving the problem that in the related art, a motor comprises a driving part and a transmission part, and the vibration of the transmission part is large, so that the vibration of a circuit board is large, and the assembly between the circuit board and a mounting bracket is influenced.

In a first aspect, the present utility model provides a movement, as shown in fig. 1, comprising a mounting bracket 10, a motor 20, and a circuit board 30.

Wherein the mounting bracket 10 extends along a first predetermined direction XX; the mounting bracket 10 is used to provide support and mounting space for the motor 20 and the circuit board 30.

The motor 20 is mounted on the mounting bracket 10, the motor 20 comprises a driving part 21 and a transmission part 22, the transmission part 22 is in transmission connection with the driving part 21, and the transmission part 22 and the driving part 21 are arranged along a first preset direction XX; the motor 20 is used for driving the brush head 80 to vibrate, wherein the transmission part 22 may have an output shaft 23, and is connected with the brush head 80 through the output shaft 23 to realize transmission connection between the brush head 80 and the driving part 21 (as shown in fig. 7), and the driving part 21 drives the brush head 80 to vibrate through the transmission part 22 to perform oral cavity cleaning by using the brush head 80.

The circuit board 30 is mounted on the mounting bracket 10, the circuit board 30 extends along a first preset direction XX, the circuit board 30 is positioned on one side of the motor 20 along a second preset direction YY, and the second preset direction YY is perpendicular to the first preset direction XX; the circuit board 30 is used for controlling the working state of electronic devices such as the motor 20, and the circuit board 30 can be a single-panel, double-panel or multi-layer board, and the type, model, size and the like of the circuit board 30 are not particularly limited in the utility model.

The front projection of the circuit board 30 on the first plane a is spaced from the front projection of the transmission portion 22 on the first plane a, and the first plane a is perpendicular to the second preset direction YY.

It will be appreciated that the driving part 21 is a part of the motor 20 that converts electrical energy into kinetic energy, and includes a stator and a vibrator, and the vibrator is connected to the transmission part 22 to transmit power to the transmission part 22. The transmission 22 is the most vibration sensitive part of the motor 20, and in some embodiments, the transmission 22 includes a transmission rod in driving connection with the vibrator, and in other embodiments, the transmission 22 includes a cam and a link mechanism. In the utility model, the circuit board 30 is arranged at intervals between the orthographic projection of the transmission part 22 on the first plane A and the orthographic projection of the transmission part 22 on the first plane A, namely, the circuit board 30 is not overlapped with the transmission part 22 in the second preset direction YY, so that the influence of vibration of the transmission part 22 on the circuit board 30 can be reduced, the condition that the circuit board 30 is loosened due to the influence of vibration on the assembly between the circuit board 30 and the mounting bracket 10 can be prevented, and the conditions that electronic elements on the circuit board 30 fail due to vibration, keys 33 on the circuit board 30 are touched by mistake and the like can also be prevented.

As shown in fig. 1 and 2, in some embodiments of the present utility model, the mounting bracket 10 includes a first bracket 11 and a second bracket 12; the circuit board 30 is mounted on the first bracket 11; the second bracket 12 and the first bracket 11 are arranged along a first preset direction XX and are separately arranged with the first bracket 11, the motor 20 is mounted on the second bracket 12, and the transmission part 22 is positioned at one side of the driving part 21 far away from the first bracket 11. It will be appreciated that the first bracket 11 and the second bracket 12 are used for mounting the circuit board 30 and the motor 20, respectively, and the first bracket 11 and the second bracket 12 are separately arranged, so that the vibration transmitted to the circuit board 30 by the mounting bracket 10 can be reduced, and the influence of the vibration of the transmission part 22 on the circuit board 30 can be further reduced.

In one embodiment of the present utility model, the movement further includes a battery 40, the first bracket 11 has a first mounting cavity 111, the second bracket 12 has a second mounting cavity 121, the battery 40 is mounted in the first mounting cavity 111, and the motor 20 is mounted in the second mounting cavity 121. The battery 40 is used for supplying power to electronic devices such as the circuit board 30, the battery 40 can be a dry battery 40 or a storage battery 40, and the type of the battery 40 is not particularly limited in the utility model; in the embodiment of the utility model, the battery 40 is mounted on the first bracket 11, so that the influence of vibration of the transmission part 22 on the battery 40 can be reduced, and poor contact of the battery 40 is prevented.

With continued reference to fig. 1 and 2, in an embodiment of the present utility model, an elastic buffer 50 is disposed between the first bracket 11 and the second bracket 12, and the first bracket 11 is connected to the second bracket 12 through the elastic buffer 50. The elastic buffer 50 may play a role of buffering, thereby having a damping effect, and when vibration generated by the transmission part 22 mounted on the second bracket 12 is transferred to the first bracket 11 via the second bracket 12, the vibration is attenuated by the elastic buffer 50, so that an influence of the vibration of the transmission part 22 on the circuit board 30 may be further reduced.

Further, the elastic buffer 50 includes a buffer spacer 51 and an elastic member 52; the buffer pad 51 is disposed at one end of the second bracket 12 near the first bracket 11 and is connected to the second bracket 12; the elastic member 52 extends along the first predetermined direction XX, a first end of the elastic member 52 is connected with the cushion pad 51, and a second end of the elastic member 52 is connected with the first bracket 11.

Wherein, the cushion pad 51 can be made of plastic, rubber or soft metal; the elastic member 52 may be preferably a spring, and of course, the elastic member 52 may be an elastic rubber block or a sponge block; the buffer gasket 51 and the elastic piece 52 have elasticity, so that the buffer gasket 51 and the elastic piece 52 have damping effect, the influence of vibration of the transmission part 22 on the circuit board 30 can be greatly reduced, in addition, the elastic piece 52 extends along the first preset direction XX, the impact along the first preset direction XX generated during the operation of the motor 20 can be effectively buffered, and the vibration and noise generated during the operation of the motor 20 can be effectively reduced.

With continued reference to fig. 1 and 2, in some embodiments of the utility model, the circuit board 30 includes a first portion 31 and a second portion 32; the first portion 31 is mounted to the mounting bracket 10; the second portion 32 is connected to the first portion 31, and the orthographic projection of the second portion 32 on the first plane a at least partially coincides with the orthographic projection of the driving portion 21 on the first plane a. It will be appreciated that the circuit board 30 is required to control the operation of larger electronic devices and, therefore, the circuit board 30 needs to have sufficient area to accommodate the electronic components; in the embodiment of the present utility model, by providing the circuit board 30 with the second portion 32 that at least partially coincides with the driving portion 21 in the first preset direction XX, the usage area of the circuit board 30 can be increased on the basis of reducing the influence of the vibration of the transmission portion 22 on the circuit board 30, so that it can be ensured that the circuit board 30 has a sufficient area to provide the electronic component. The first portion 31 and the second portion 32 may be integrally formed, or the first portion 31 and the second portion 32 may be connected by gluing, screwing, or the like after being formed respectively.

Further, the first portion 31 is mounted on the first bracket 11, the mounting bracket 10 further includes a bearing portion 13, the bearing portion 13 is connected to the first bracket 11, at least a portion of the bearing portion 13 is located between the second portion 32 and the second bracket 12, at least a portion of the second portion 32 is carried by the bearing portion 13, and an orthographic projection of the bearing portion 13 on the first plane a is spaced from an orthographic projection of the transmission portion 22 on the first plane a. It should be noted that, the structure of the circuit board 30 is fragile, and if the second portion 32 lacks support, the second portion 32 is easily broken; in the embodiment of the present utility model, by providing the bearing portion 13, the bearing portion 13 can be used to provide support for the second portion 32, so as to avoid the second portion 32 being in a "suspended" state, thereby improving the structural strength of the second portion 32, and making the second portion 32 not easily damaged. The bearing portion 13 and the first bracket 11 may be integrally formed, or the bearing portion 13 and the first bracket 11 may be connected by welding, riveting, screwing, or clamping after being formed respectively.

Preferably, the second portion 32 may further be provided with a key 33, where an orthographic projection of the key 33 on the first plane a coincides with an orthographic projection of the bearing portion 13 on the first plane a, so that the bearing portion 13 may be used to provide support for the key 33, so as to prevent the performance of the circuit board 30 from being affected due to easy stress deformation of the circuit board 30 when the key 33 is stressed. It will be appreciated that some function control, such as on/off, function start, mode adjustment or gear adjustment, may be achieved by pressing the key 33.

As shown in fig. 2 to 4, in some embodiments of the present utility model, a first hook 61 is disposed on one of a side of the carrying portion 13 facing the second bracket 12 and a side of the second bracket 12 facing the carrying portion 13, a slot 62 is disposed on the other of the side of the carrying portion 13 facing the second bracket 12 and the side of the second bracket 12 facing the carrying portion 13, and the first hook 61 is inserted into the slot 62 and is hooked with the slot 62.

The distance between the driving portion 21 and the clamping groove 62 along the second preset direction YY is greater than the length of the portion of the first hook 61 inserted into the clamping groove 62 along the second preset direction YY. It should be noted that, by using the cooperation of the first hook 61 and the slot 62, the bearing part 13 can be fixed on the second bracket 12, so that the bearing part 13 is prevented from being "suspended" to cause a larger amplitude of shaking of the bearing part 13; in addition, by setting the distance between the driving portion 21 and the clamping groove 62 in the second preset direction YY, the part of the first clamping hook 61 inserted into the clamping groove 62 is kept at a certain distance from the driving portion 21, so that even if the driving portion 21 is vibrated by the transmission portion 22, scraping is not easy to occur between the first clamping hook 61 and the driving portion 21, and the situation that the insulation layer of the driving portion 21 is scratched by the first clamping hook 61 to cause short circuit and the like is prevented.

It should be noted that, the first hook 61 may be disposed on a side of the bearing portion 13 facing the second bracket 12, and the slot 62 is disposed on a side of the second bracket 12 facing the bearing portion 13; the first hook 61 may also be disposed on a side of the second bracket 12 facing the bearing portion 13, and the slot 62 is disposed on a side of the bearing portion 13 facing the second bracket 12.

In an embodiment of the present utility model, the clamping groove 62 includes an access groove 621 and a limit groove 622, wherein the limit groove 622 extends along a first predetermined direction XX and is communicated with the access groove 621; the first hook 61 includes a first engaging portion 611 and a connecting portion 612, and the first engaging portion 611 is connected to the carrying portion 13 through the connecting portion 612.

The length of the access slot 621 along the third preset direction ZZ is greater than the length of the first hooking portion 611 along the third preset direction ZZ, the length of the first hooking portion 611 along the third preset direction ZZ is greater than the width of the limit slot 622 along the third preset direction ZZ, the width of the limit slot 622 along the third preset direction ZZ is greater than the width of the connecting portion 612 along the third preset direction ZZ, the third preset direction ZZ is perpendicular to the first preset direction XX and the second preset direction YY, and the first hooking portion 611 accesses the card slot 62 through the access slot 621.

It can be understood that when the carrying portion 13 is connected to the second bracket 12, the first hooking portion 611 is first inserted into the access slot 621, and then the carrying portion 13 is moved along the first preset direction XX to drive the first hook 61 to move, at this time, the connecting portion 612 slides along the limiting slot 622 in the limiting slot 622, and the first hooking portion 611 is located below the limiting slot 622, because the length of the first hooking portion 611 along the third preset direction ZZ is greater than the width of the limiting slot 622 along the third preset direction ZZ, at this time, the limiting slot 622 will clamp the first hooking portion 611, so that the first hooking portion 611 cannot be pulled out from the limiting slot 622, and the carrying portion 13 and the second bracket 12 can be connected; it should be further noted that, the connecting portion 612 may slide along the limiting groove 622 in the limiting groove 622, so that the position of the bearing portion 13 may be adjusted, and the bearing portion 13 is convenient to be mounted on the second bracket 12.

In an embodiment of the present utility model, an elastic engaging member 63 is disposed on one of a side of the carrying portion 13 facing the second bracket 12 and a side of the second bracket 12 facing the carrying portion 13, a bayonet 64 is disposed on the other of the side of the carrying portion 13 facing the second bracket 12 and the side of the second bracket 12 facing the carrying portion 13, and the elastic engaging member 63 is engaged with the bayonet 64. It can be understood that, in the process of adjusting the position of the bearing portion 13, the elastic clamping member 63 is in a compressed state, when the position of the bearing portion 13 is adjusted to the position that the elastic clamping member 63 corresponds to the bayonet 64, the elastic clamping member 63 extends into the bayonet 64 to be clamped with the bayonet 64, so as to realize the fixed connection between the bearing portion 13 and the second bracket 12, and make the connection between the bearing portion 13 and the second bracket 12 more stable; in addition, when the elastic clamping member 63 is clamped with the bayonet 64, the elastic member 52 is compressed to be in a compressed state, and the elastic force of the elastic member 52 can clamp the elastic clamping member 63 with the bayonet 64 more firmly, so that the bearing portion 13 is connected with the second bracket 12 more stably.

The elastic engaging member 63 may be disposed on a side of the bearing portion 13 facing the second bracket 12, where the bayonet 64 is disposed on a side of the second bracket 12 facing the bearing portion 13; the elastic engaging member 63 may be disposed on a side of the second bracket 12 facing the carrying portion 13, and the bayonet 64 is disposed on a side of the carrying portion 13 facing the second bracket 12.

In an embodiment of the present utility model, the front projection of the first hook 61 on the first plane a coincides with the front projection of the second portion 32 on the first plane a, so that the front projection of the circuit board 30 on the first plane a covers the front projection of the first hook 61 on the first plane a, thereby improving the structural strength of the bearing portion 13 at the portion corresponding to the first hook 61, and preventing the bearing plate from being broken when the first hook 61 is stressed.

With continued reference to fig. 2 to 4, in an embodiment of the present utility model, a positioning protrusion 14 is disposed at an end of the second bracket 12 near the first bracket 11, a positioning groove 511 is disposed on the buffer pad 51, and the positioning protrusion 14 is clamped in the positioning groove 511; the side of the bearing part 13 facing the second bracket 12 is provided with a connecting groove 19, and the buffer pad 51 is provided with a connecting protrusion 54 clamped in the connecting groove. It should be noted that, the buffer pad 51 is fixed on the second bracket 12 through the clamping connection between the positioning protrusion 14 and the positioning groove 511, and the buffer pad 51 is connected with the bearing portion 13 through the clamping connection between the connecting protrusion 54 and the connecting groove 19, so that the buffer pad 51 can be prevented from falling off, and meanwhile, the connection strength between the bearing portion 13 and the second bracket 12 can be enhanced.

In an embodiment of the present utility model, a limiting protrusion 15 is further disposed on a side of the bearing portion 13 facing the second bracket 12, the limiting protrusion 15 and the bearing portion 13 form a limiting groove 16, and a first end of the elastic member 52 extends into the limiting groove 16; the buffer spacer 51 is provided with a clamping protrusion 53 on a side facing the first bracket 11, and the second end of the elastic member 52 is sleeved on the clamping protrusion 53. It should be noted that, the buffer connection between the bearing portion 13 and the second bracket 12 is realized through the elastic member 52 and the buffer pad 51, the first end of the elastic member 52 is limited through the limiting groove 16, and the second end of the elastic member 52 is limited through the clamping protrusion 53, so as to prevent the elastic member 52 from falling off, and meanwhile, the elastic member 52 can be limited to elastically stretch along the first preset direction XX.

As shown in fig. 5, in an embodiment of the present utility model, a fixing member 17 is disposed on a side of the first bracket 11 facing the first portion 31, and the fixing member 17 is connected to the first portion 31; the first bracket 11 has a first end facing the second bracket 12 and a second end opposite to the first end, and a distance between the fixing member 17 and the first end along the first preset direction XX is greater than a distance between the fixing member 17 and the second end along the first preset direction XX. It will be appreciated that the first portion 31 of the circuit board 30 may be secured by the attachment of the securing member 17 to the first portion 31 to prevent the circuit board 30 from being separated from the first bracket 11 by vibration.

In an embodiment of the present utility model, a second hook 18 is disposed on a side of the bearing portion 13 away from the second bracket 12, the second hook 18 includes a second hooking portion 181, the second portion 32 is located between the second hooking portion 181 and the bearing portion 13, and the second hook 18 is used for fixedly mounting the second portion 32 on the bearing portion 13; the distance between the second hook 18 and the transmission portion 22 along the first preset direction XX is smaller than the distance between the second hook 18 and the first bracket 11 along the first preset direction XX. It can be appreciated that the second hook 18 is used to fix the second portion 32 on the circuit board 30, so as to prevent the circuit board 30 from being separated from the first bracket 11 due to vibration; furthermore, the fixation of the first portion 31 in combination with the fixing member 17 makes the mounting of the circuit board 30 more stable.

In a second aspect, based on the movement described above, the present utility model also provides a handle, as shown in fig. 6, comprising a housing 70 and a movement according to any of the above embodiments, the housing 70 having a receiving cavity 71, the movement being located in the receiving cavity 71. The housing 70 is used to provide support and protection for the movement and the like. The material of the housing 70 may be plastic or metal, and the present utility model is not particularly limited. The overall shape of the housing 70 may be cylindrical, prismatic, or other, and the present utility model is not particularly limited.

In a third aspect, based on the handle described above, the present utility model also provides an electric toothbrush, as shown in fig. 7, comprising a brush head 80 and a handle as in any of the above embodiments, the brush head 80 being mounted to a movement.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (18)

1. A movement, comprising:

the mounting bracket extends along a first preset direction;

the motor is arranged on the mounting bracket and comprises a driving part and a transmission part, the transmission part is in transmission connection with the driving part, and the transmission part and the driving part are distributed along the first preset direction;

the circuit board is arranged on the mounting bracket, extends along the first preset direction, and is positioned at one side of the motor along a second preset direction, and the second preset direction is perpendicular to the first preset direction;

the orthographic projection of the circuit board on a first plane is spaced from orthographic projection of the transmission part on the first plane, and the first plane is perpendicular to the second preset direction.

2. The cartridge of claim 1, wherein the mounting bracket comprises:

the circuit board is arranged on the first bracket;

the second support, with first support is followed the first direction of predetermineeing is arranged, and with first support components of a whole that can function independently sets up, the motor install in the second support, just drive portion is located drive portion is kept away from one side of first support.

3. The movement of claim 2, further comprising a battery, wherein the first bracket has a first mounting cavity, wherein the second bracket has a second mounting cavity, wherein the battery is mounted to the first mounting cavity, and wherein the motor is mounted to the second mounting cavity.

4. A movement according to claim 2, wherein an elastic buffer is provided between the first and second brackets, the first bracket being connected to the second bracket by the elastic buffer.

5. The movement of claim 4, wherein the resilient cushioning member comprises:

the buffer gasket is arranged at one end of the second bracket, which is close to the first bracket, and is connected with the second bracket;

and the elastic piece extends along the first preset direction, the first end of the elastic piece is connected with the buffer gasket, and the second end of the elastic piece is connected with the first bracket.

6. The movement of claim 1, wherein the circuit board comprises:

a first portion mounted to the mounting bracket;

and the second part is connected with the first part, and the orthographic projection of the second part on the first plane is at least partially overlapped with the orthographic projection of the driving part on the first plane.

7. The cartridge of claim 6, wherein the mounting bracket comprises:

a first bracket to which the first portion is mounted;

the second bracket is arranged along the first preset direction with the first bracket, is arranged separately from the first bracket, is installed on the second bracket, and is positioned on one side of the driving part far away from the first bracket;

wherein, the installing support still includes:

the bearing part is connected with the first bracket, at least part of the bearing part is positioned between the second part and the second bracket, at least part of the second part is borne by the bearing part, and the orthographic projection of the bearing part on the first plane is spaced from the orthographic projection of the transmission part on the first plane.

8. A movement according to claim 7, wherein the second portion is provided with a key, the orthographic projection of which on the first plane coincides with the orthographic projection of the bearing portion on the first plane.

9. The movement according to claim 7, wherein one of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion is provided with a first hook, and the other of a side of the bearing portion facing the second bracket and a side of the second bracket facing the bearing portion is provided with a groove, into which the first hook is inserted and is hooked;

the distance between the driving part and the clamping groove along the second preset direction is larger than the length of the part, inserted into the clamping groove, of the first clamping hook along the second preset direction.

10. The movement of claim 9, wherein the card slot includes an access slot body and a limit slot body, the limit slot body extending in the first predetermined direction and communicating with the access slot body; the first clamping hook comprises a first hooking part and a connecting part, and the first hooking part is connected with the bearing part through the connecting part;

the length of the access groove body along a third preset direction is greater than the length of the first hooking part along the third preset direction, the length of the first hooking part along the third preset direction is greater than the width of the limit groove body along the third preset direction, the width of the limit groove body along the third preset direction is greater than the width of the connecting part along the third preset direction, the third preset direction is perpendicular to the first preset direction and the second preset direction, and the first hooking part passes through the access groove body to access the clamping groove.

11. A cartridge according to claim 10, wherein one of a side of the carrying portion facing the second bracket and a side of the second bracket facing the carrying portion is provided with an elastic engagement member, and the other of a side of the carrying portion facing the second bracket and a side of the second bracket facing the carrying portion is provided with a bayonet, the elastic engagement member being engaged with the bayonet.

12. The movement of claim 9, wherein an orthographic projection of the first detent on the first plane coincides with an orthographic projection of the second portion on the first plane.

13. The movement according to claim 7, characterized in that an elastic buffer is provided between said first and second brackets, said first bracket being connected to said second bracket by means of said elastic buffer; the elastic buffer piece comprises a buffer gasket and an elastic piece, and the buffer gasket is arranged at one end of the second bracket, which is close to the first bracket, and is connected with the second bracket; the elastic piece extends along the first preset direction, one end of the elastic piece is connected with the buffer gasket, and the other end of the elastic piece is connected with the first bracket;

the buffer gasket is provided with a positioning groove, and the positioning protrusion is clamped in the positioning groove; the bearing part is provided with a connecting groove towards one side of the second bracket, and the buffer gasket is provided with a connecting protrusion which is clamped in the connecting groove.

14. The movement of claim 13, wherein a limiting protrusion is further disposed on a side of the bearing portion facing the second bracket, the limiting protrusion and the bearing portion form a limiting groove, and the first end of the elastic member extends into the limiting groove; the buffer gasket is provided with a clamping protrusion towards one side of the first support, and the second end of the elastic piece is sleeved on the clamping protrusion.

15. A movement according to claim 7, wherein the side of the first bracket facing the first portion is provided with a fixing member, said fixing member being connected to the first portion;

the first support is provided with a first end part facing the second support and a second end part opposite to the first end part, and the distance between the fixing piece and the first end part along the first preset direction is larger than the distance between the fixing piece and the second end part along the first preset direction.

16. The movement of claim 7, wherein a second hook is disposed on a side of the bearing portion away from the second bracket, the second hook including a second engaging portion, the second portion being located between the second engaging portion and the bearing portion, the second hook being configured to fixedly mount the second portion to the bearing portion;

the distance between the second clamping hook and the transmission part along the first preset direction is smaller than the distance between the second clamping hook and the first bracket along the first preset direction.

17. A handle comprising a housing and a movement according to any one of claims 1 to 16, the housing having a cavity in which the movement is located.

18. An electric toothbrush comprising a brush head and a handle according to claim 17, the brush head being mounted to the cartridge.