Toothbrush movement and electric toothbrush

Abstract

The embodiment of the utility model discloses a toothbrush movement and an electric toothbrush, the toothbrush movement comprises a motor support, a main control board, a motor body and a circuit board module, the motor support comprises a first sub-shell and a second sub-shell which are mutually spliced in the thickness direction of the motor support, and the first sub-shell and the second sub-shell define a mounting space; a flat cable gap is formed at the joint of the first sub-shell and the second sub-shell; the main control board is fixedly mounted on the outer wall surface of the first sub-shell or the second sub-shell; the motor body is fixedly connected in the mounting space; the circuit board module is used for detecting motion parameters of the motor body and comprises a flexible circuit board, one part of the flexible circuit board is arranged in the installation space, and the other part of the flexible circuit board penetrates out of the installation space through the flat cable notch and is electrically connected with the main control board. The flexible circuit board of the motor of the toothbrush movement is clamped at the joint of the first sub-shell and the second sub-shell and is not easy to loosen from the main control board.

Description

Technical Field

[0001] The present application relates to the technical field of electric toothbrushes, and particularly relates to a toothbrush movement and an electric toothbrush. Background Art

[0002] Electric toothbrushes are favored by more and more users due to their high cleaning efficiency. An electric toothbrush includes a brush handle housing and a toothbrush movement disposed in the brush handle housing. The toothbrush movement includes a main control board, a motor bracket, a motor body, a circuit board module, etc. The motor body is installed in the motor bracket, and the output shaft of the motor body passes through the motor bracket and extends outside the brush handle housing to be connected to the toothbrush head. The circuit board module is used to detect the movement parameters of the motor body and control the rotation amplitude, forward and reverse rotation, etc. of the output shaft through the main control board. In related technologies, the circuit board module includes a flexible circuit board to facilitate bending and electrical connection with the main control board. The main control board is fixed to the outer peripheral wall of the motor bracket, and the motor body is wrapped in the motor bracket. Currently, a horizontal opening (in the direction perpendicular to the axial direction of the output shaft) is provided on the motor bracket for the flexible circuit board to pass through. In this way, under long-term vibration, the connection between the flexible circuit board and the main control board will become loose, resulting in the failure of related functions.

[0003] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is prior art. Summary of the Utility Model

[0004] In view of the above problems, the present utility model provides a toothbrush movement, aiming to solve the technical problem that the flexible circuit board of the motor is easily loosened from the control board.

[0005] To achieve the above object, the toothbrush movement provided by the present utility model includes a motor bracket, a main control board, a motor body, and a circuit board module;

[0006] The motor bracket includes a first sub-shell and a second sub-shell that are spliced together in the thickness direction thereof, and an installation space is formed by enclosing the first sub-shell and the second sub-shell. A wiring notch is formed at the splicing position of the first sub-shell and the second sub-shell;

[0007] The main control board is fixedly installed on the outer wall surface of the first sub-shell or the second sub-shell;

[0008] The motor body is fixedly connected to the installation space;

[0009] The circuit board module is used to detect the movement parameters of the motor body. The circuit board module includes a flexible circuit board. A part of the flexible circuit board is disposed in the installation space, and the other part passes through the wiring notch and exits the installation space to be electrically connected to the main control board.

[0010] In one embodiment, the flexible circuit board includes a horizontal portion and a laterally extending portion connected to each other. The plate surface of the horizontal portion is disposed corresponding to the bottom end of the motor body. The plate surface of the laterally extending portion faces the peripheral wall of the motor body and is wound around the outer periphery of the motor body. One end of the laterally extending portion passes through the cable gap and is electrically connected to the main control board.

[0011] In one embodiment, the main control board is fixed to the outer surface of the first sub-shell. The laterally extending portion includes a limiting section and a surrounding section. The limiting section is disposed on the outer periphery of the first sub-shell. And in the length direction of the motor body, the length of the limiting section is greater than the length of the cable gap. The surrounding section is disposed around the outer periphery of the motor body and is clamped between the second sub-shell and the motor body. One end of the surrounding section extends out of the cable gap and is connected to the surrounding section.

[0012] In one embodiment, the laterally extending portion further includes a plugging section connected to one end of the limiting section away from the surrounding section. The plugging section extends along the plate surface of the main control board, and the plugging section is plugged into the main control board.

[0013] In one embodiment, the cable gap is formed on the splicing surface of the second sub-shell. A avoiding space is recessed at a position on the outer peripheral wall of the first sub-shell corresponding to the cable gap. The portion of the surrounding section extending out of the cable gap is accommodated in the avoiding space.

[0014] In one embodiment, the flexible circuit board further includes a longitudinally extending portion with two ends respectively connected to the horizontal portion and the laterally extending portion. The longitudinally extending portion extends along the length direction of the motor body.

[0015] In one embodiment, the motor body includes a motor housing and an end housing. The end housing is fixedly connected to the bottom end of the motor housing. A foaming buffer sleeve is sleeved on the outer periphery of the motor housing. The horizontal portion is disposed at the bottom end of the end housing. The longitudinally extending portion extends to the motor housing. The longitudinally extending portion and / or the laterally extending portion are partially bonded to the foaming buffer sleeve.

[0016] In one embodiment, the circuit board module further includes a rigid support plate fixed to the bottom end of the motor body. The horizontal portion is fixed to the rigid support plate. A sensor for detecting the motion parameters of the output shaft of the motor body is provided on the horizontal portion.

[0017] In one embodiment, a clamping portion and a positioning post are provided on the outer peripheral wall of the first sub-shell. The main control board is clamped to the clamping portion and has a positioning hole cooperating with the positioning post. The toothbrush movement mechanism further includes a connecting member that passes through the main control board and is fixedly connected to the first sub-shell.

[0018] In one embodiment, the length of the first sub-shell is greater than that of the second sub-shell. The main control board is fixedly installed in the first sub-shell. The second sub-shell is spliced on the upper part of the first sub-shell, and the first sub-shell is located below the second sub-shell to form a battery accommodation chamber. The cable slot is arranged adjacent to the battery accommodation chamber.

[0019] The present utility model also provides an electric toothbrush, which includes a brush head, a brush handle housing, and a toothbrush movement mechanism as described in any one of the above embodiments. The toothbrush movement mechanism is installed in the brush handle housing, and the brush head is connected to the output shaft of the toothbrush movement mechanism that extends out of the brush handle housing.

[0020] The toothbrush movement mechanism of the present utility model detects the movement parameters of the motor body through a circuit board module, and enables the circuit board module to be electrically connected to the main control board through a flexible circuit board, which can adapt to a complex spatial layout and is more convenient for bending electrical connection. The motor bracket includes a first sub-shell and a second sub-shell that are spliced in the thickness direction thereof, and a cable slot is formed at the splicing position of the first sub-shell and the second sub-shell, that is, the cable slot is longitudinally arranged. In this way, when the flexible circuit board passes through the cable slot from the installation space and is electrically connected to the main control board, the connection end of the flexible circuit board and the main control board can be firmly clamped at the splicing position of the first sub-shell and the second sub-shell and is limited longitudinally. In this way, the stability of the connection end of the flexible circuit board and the main control board can be ensured, and the situation that the flexible circuit board shakes up and down and becomes loose from the connection with the main control board due to the long-term vibration of the motor body can be avoided, thereby improving the use reliability of the product. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Shows a schematic structural diagram of an embodiment of the toothbrush movement mechanism of the present utility model;

[0023] Figure 2 For Figure 1 The exploded structural diagram of the toothbrush movement mechanism in;

[0024] Figure 3 For Figure 2 The partial enlarged view of A in;

[0025] Figure 4 For Figure 1 The structural diagram of another angle of the toothbrush movement mechanism in;

[0026] Figure 5 For Figure 4Exploded structural schematic diagram of the main control board and the motor bracket;

[0027] Figure 6 For Figure 5 Partial enlarged view at position B in;

[0028] Figure 7 Assembly structural schematic diagram of the motor body and the circuit board module of the present utility model;

[0029] Figure 8 For Figure 7 Exploded structural schematic diagram of the motor body and the circuit board module in;

[0030] Figure 9 Structural schematic diagram of an embodiment of the motor bracket of the present utility model;

[0031] Figure 10 Structural schematic diagram of an embodiment of the electric toothbrush of the present utility model.

[0032] Explanation of the reference numerals in the drawings:

[0033] Label Name Label Name Label Name 10 Toothbrush movement 100 Motor bracket 110 First sub-shell 111 Avoidance space 112 Snap joint 113 Positioning post 114 Battery compartment 120 Second sub-shell 121 Flexible cable notch 130 Installation space 200 Main control board 210 Positioning hole 300 Motor body 310 Motor housing 320 End shell 400 Circuit board module 410 Flexible circuit board 411 Horizontal part 412 Transverse extension 413 Limit section 414 Surrounding section 415 Insertion section 416 Longitudinal extension 420 Rigid support plate 500 Output shaft 600 Foam buffer sleeve 20 Toothbrush handle housing

[0034] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of the technical solutions appears to be mutually contradictory or unable to be implemented, it should be considered that such a combination of the technical solutions does not exist and is not within the protection scope required by the present utility model.

[0036] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously.

[0038] The present utility model provides a toothbrush movement.

[0039] In the embodiments of the present utility model, please refer to Figures 1 to 6 , the toothbrush movement 10 includes a motor bracket 100, a main control board 200, a motor body 300, and a circuit board module 400; the motor bracket 100 includes a first sub-shell 110 and a second sub-shell 120 that are spliced with each other in the thickness direction thereof, and an installation space 130 is formed by enclosing the first sub-shell 110 and the second sub-shell 120. A cable slot 121 is formed at the splicing position of the first sub-shell 110 and the second sub-shell 120; the main control board 200 is fixedly installed on the outer wall surface of the first sub-shell 110 or the second sub-shell 120; the motor body 300 is fixedly connected in the installation space 130; the circuit board module 400 is used to detect the movement parameters of the motor body 300, and the circuit board module 400 includes a flexible circuit board 410. A part of the flexible circuit board 410 is arranged in the installation space 130, and the other part passes through the cable slot 121 and exits the installation space 130 and is electrically connected to the main control board 200.

[0040] In this embodiment, the motor body 300 has an output shaft 500 connected to the toothbrush head. The motor bracket 100 includes a first sub-shell 110 and a second sub-shell 120 that are spliced with each other in the thickness direction thereof, that is, the splicing surface of the first sub-shell 110 and the second sub-shell 120 extends along the axial direction of the output shaft 500, and the first sub-shell 110 and the second sub-shell 120 are spliced in the radial direction of the output shaft 500. The first sub-shell 110 and the second sub-shell 120 can be fixedly connected by means of screws, buckles, etc. A cable slot 121 is formed at the splicing position of the first sub-shell 110 and the second sub-shell 120, and the cable slot 121 extends along the axial direction of the output shaft 500. The cable slot 121 can be provided only at the splicing surface of the first sub-shell 110 or the second sub-shell 120, or can be provided at the splicing surfaces of both the first sub-shell 110 and the second sub-shell 120 at the same time. The main control board 200 can be fixedly installed on the outer wall surface of the first sub-shell 110 or the second sub-shell 120 through structures such as buckles and screws. The motor body 300 can be directly clamped between the inner cavities of the first sub-shell 110 and the second sub-shell 120, or can be fixedly connected to the motor bracket 100 through structures such as screws and end plates.

[0041] The first sub-shell 110 and the second sub-shell 120 enclose an installation space 130 for installing the motor body 300 to protect and support the motor body 300. The circuit board module 400 may only include a flexible circuit board 410, or may also include a flexible circuit board 410 and a rigid support plate 420 or a rigid PCB board, etc. A detection sensor may be provided on the flexible circuit board 410 to detect the motion parameters of the motor body 300. The main control board 200 can control the rotation amplitude, forward and reverse rotation, etc. of the output shaft 500 of the motor body 300 according to the motion parameters. One end of the flexible circuit board 410 is arranged in the installation space 130 corresponding to the motor body 300, and the other end passes through the wiring gap 121 and extends out of the installation space 130 to be electrically connected to the main control board 200. The flexible circuit board 410 and the main control board 200 can be electrically connected by plugging, welding, etc.

[0042] The toothbrush movement mechanism 10 of the present utility model detects the motion parameters of the motor body 300 through the circuit board module 400, and enables the circuit board module 400 to be electrically connected to the main control board 200 through the flexible circuit board 410, which can adapt to complex spatial layouts and is more convenient for bending and electrical connection. The motor bracket 100 includes a first sub-shell 110 and a second sub-shell 120 spliced in the thickness direction thereof, and a wiring gap 121 is formed at the splicing position of the first sub-shell 110 and the second sub-shell 120, that is, the wiring gap 121 is longitudinally arranged. In this way, when the flexible circuit board 410 passes through the wiring gap 121 and extends out of the installation space 130 to be electrically connected to the main control board 200, the connection end of the flexible circuit board 410 and the main control board 200 can be firmly clamped at the splicing position of the first sub-shell 110 and the second sub-shell 120 and is limited in the longitudinal direction. In this way, the stability of the connection end of the flexible circuit board 410 and the main control board 200 can be ensured, and the situation that the flexible circuit board 410 shakes up and down and is disconnected from the main control board 200 due to the long-term vibration of the motor body 300 can be avoided, thereby improving the use reliability of the product.

[0043] In an embodiment, as Figures 2 to 8 shown, the flexible circuit board 410 includes a horizontally extending portion 411 and a laterally extending portion 412 connected to each other. The plate surface of the horizontally extending portion 411 is arranged corresponding to the bottom end of the motor body 300, the plate surface of the laterally extending portion 412 faces the peripheral wall of the motor body 300 and winds around the outer periphery of the motor body 300, and one end of the laterally extending portion 412 passes through the wiring gap 121 and extends out to be electrically connected to the main control board 200.

[0044] In this embodiment, the flexible circuit board 410 includes a horizontal portion 411. The plate surface of the horizontal portion 411 is arranged corresponding to the bottom end of the motor body 300. Then, the motion parameters of the motor body 300 can be accurately detected by the sensors arranged on the horizontal portion 411. By making the plate surface of the transverse extension portion 412 face the peripheral wall of the motor body 300, in this way, on the one hand, the transverse extension portion 412 can be wound around the outer peripheries of the motor body 300 and the motor bracket 100, ensuring the fitting stability of the flexible circuit board 410 with the motor body 300 and the motor bracket 100. On the other hand, the plate surface of the transverse extension portion 412 is clamped between the first sub-shell 110 and the second sub-shell 120, which can ensure the electrical connection stability between the transverse extension portion 412 and the main control board 200.

[0045] In one embodiment, please refer to again Figures 1 to 8 , the main control board 200 is fixed on the outer surface of the first sub-shell 110. The transverse extension portion 412 includes a limiting section 413 and a surrounding section 414. The limiting section 413 is arranged on the outer periphery of the first sub-shell 110. And in the length direction of the motor body 300, the length of the limiting section 413 is greater than the length of the cable routing notch 121. The surrounding section 414 is arranged around the outer periphery of the motor body 300 and is clamped between the second sub-shell 120 and the motor body 300. One end of the surrounding section 414 extends out of the cable routing notch 121 and is connected to the surrounding section 414.

[0046] In this embodiment, the surrounding section 414 is arranged around the outer periphery of the motor body 300 and is clamped between the second sub-shell 120 and the motor body 300. The motor body 300 and the second sub-shell 120 can be used to clamp the surrounding section 414, further improving the connection stability and reliability between the transverse extension portion 412 and the motor body 300 and the motor bracket 100. And the length of the surrounding section 414 is less than or equal to the length of the cable routing notch 121, so that the surrounding section 414 can pass through the cable routing notch 121. Actually, the width of the limiting section 413 should be less than the length of the cable routing notch 121, then the limiting section 413 can pass through the cable routing notch 121 by arranging the limiting section 413 horizontally.

[0047] By arranging the limiting section 413 on the outer periphery of the first sub-shell 110 and making the length of the limiting section 413 greater than the length of the cable routing notch 121, the limiting section 413 cannot pass through the cable routing notch 121. Therefore, the limiting section 413 cannot move in the circumferential direction of the first sub-shell 110. In this way, without additionally arranging a limiting structure, the circumferential and vertical direction limiting of the transverse extension portion 412 on the motor bracket 100 can be realized, further ensuring the connection stability between the transverse extension portion 412 and the motor bracket 100, and then ensuring the reliability of the electrical connection points between the transverse extension portion 412 and the main control board 200.

[0048] Further, the lateral extension portion 412 further includes a plug-in segment 415 connected to one end of the limiting segment 413 away from the surrounding segment 414. The plug-in segment 415 extends along the board surface of the main control board 200, and the plug-in segment 415 is plugged into the main control board 200. The length and / or width of the plug-in segment 415 can be made smaller than the length of the cable notch 121, so that the plug-in segment 415 can pass through the cable notch 121. By making the lateral extension portion 412 plugged into the main control board 200 through the plug-in segment 415, the electrical connection method between the flexible circuit board 410 and the main control board 200 is made simpler, thereby making the wiring operation more convenient and effectively improving the assembly efficiency.

[0049] In an embodiment, as Figure 2 、 Figure 3 and Figure 9 shown, a cable notch 121 is formed on the splicing surface of the second sub-shell 120, and an avoidance space 111 is formed by recessing the outer peripheral wall of the first sub-shell 110 at a position corresponding to the cable notch 121. The portion of the surrounding segment 414 extending out of the cable notch 121 is received in the avoidance space 111.

[0050] In this embodiment, it can be understood that since the wall surfaces of the first sub-shell 110 and the second sub-shell 120 are substantially arc-shaped surfaces, if the surrounding segment 414 directly adheres to the outer peripheral wall of the first sub-shell 110 after extending out of the cable notch 121, a large fold angle will be formed at the cable notch 121, which is likely to damage the surrounding segment 414. By forming an avoidance space 111 by recessing the outer peripheral wall of the first sub-shell 110 at a position corresponding to the cable notch 121, on the one hand, the surrounding segment 414 can directly extend into the avoidance space 111 from the cable notch 121 without bending, improving the service life of the flexible circuit board 410. On the other hand, the avoidance space 111 can also be used for installing the limiting segment 413, further improving the fitting reliability between the flexible circuit board 410 and the first sub-shell 110.

[0051] In an embodiment, please refer to Figures 2 to 8 , the flexible circuit board 410 further includes a longitudinal extension portion 416 with two ends respectively connected to the horizontal portion 411 and the lateral extension portion 412. The longitudinal extension portion 416 extends along the length direction of the motor body 300. By providing the longitudinal extension portion 416, the lateral extension portion 412 and the horizontal portion 411 can be separated longitudinally, making it more convenient for the layout and wiring of the horizontal portion 411 and the lateral extension portion 412. The length of the longitudinal extension portion 416 can be selected and designed according to actual needs and will not be specifically limited here.

[0052] In an embodiment, as Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, the motor body 300 includes a motor housing 310 and an end housing 320. The end housing 320 is fixedly connected to the bottom end of the motor housing 310. A foaming buffer sleeve 600 is sleeved on the outer periphery of the motor housing 310. A horizontal portion 411 is provided at the bottom end of the end housing 320, and a longitudinal extension portion 416 extends to the motor housing 310. The longitudinal extension portion 416 and / or the transverse extension portion 412 are partially bonded to the foaming buffer sleeve 600.

[0053] In this embodiment, the end housing 320 can be fixedly connected to the motor housing 310 by means of screws, plugging, etc. By fixing the horizontal portion 411 to the bottom end of the end housing 320, the flexible circuit board 410 can be assembled to the motor body 300 together with the end housing 320, which is more convenient for the maintenance of the flexible circuit board 410. The foaming buffer sleeve 600 can specifically be a sponge sleeve, a foam sleeve, etc. By sleeving the foaming buffer sleeve 600 on the outer periphery of the motor housing 310, the vibration of the motor body 300 can be buffered and absorbed. And by partially bonding the longitudinal extension portion 416 and / or the transverse extension portion 412 to the foaming buffer sleeve 600, the connection stability and reliability between the flexible circuit board 410 and the motor body 300 can be further improved.

[0054] In one embodiment, please refer to Figure 2 、 Figure 3 、 Figure 7 and Figure 8 , the circuit board module 400 further includes a rigid support plate 420 fixed to the bottom end of the motor body 300. The horizontal portion 411 is fixed to the rigid support plate 420, and a sensor for detecting the motion parameters of the output shaft 500 of the motor body 300 is provided on the horizontal portion 411.

[0055] In this way, the circuit board module 400 has a structure combining rigidity and flexibility. Since the rigid support plate 420 has high structural strength, it can provide good support for the flexible circuit board 410. The flexible circuit board 410 is fixed to the motor body 300 through the rigid support plate 420, which can improve the connection stability of the flexible circuit board 410 and avoid the flexible circuit board 410 driving the sensors thereon to shake, affecting the detection accuracy. At the same time, since the rigid support plate 420 has a flat support plane and the horizontal portion 411 of the flexible circuit board 410 is fixedly attached to the rigid support plate 420, the installation of the sensors fixed on the horizontal portion 411 can be made more stable and reliable, which can further ensure the motor detection accuracy.

[0056] There can be many types of sensors, specifically, it can be a Hall sensor, a laser sensor, an inductive sensor, etc. The toothbrush core 10 of the electric toothbrush further includes a position feedback member, and the position feedback member is fixedly connected to the rotor assembly of the motor body 300; the sensor is arranged corresponding to the position feedback member to detect the rotation position of the output shaft 500. The position feedback member is used to feedback position information to the sensor and plays a role in position positioning.

[0057] In a specific embodiment, the toothbrush core 10 of the electric toothbrush further includes a position feedback member. The position feedback member includes a magnetic ring coaxially arranged with the output shaft 500. The sensor includes two Hall sensors, and the horizontal portion 411 is spaced below the magnetic ring; the two Hall sensors are fixedly spaced on the upper surface of the horizontal portion 411.

[0058] In this embodiment, the magnetic ring can be fixedly installed on the output shaft 500 through structures such as brackets and sleeves to rotate synchronously with the output shaft 500. The Hall sensors can be fixed to the upper surface of the horizontal portion 411 by welding, bonding, etc. By arranging two spaced Hall sensors on the upper surface of the horizontal portion 411, after the output shaft 500 rotates to the magnetic ring corresponding to one of the Hall sensors, the Hall limit switch is triggered to control the reverse rotation of the output shaft 500, and after the output shaft 500 rotates reversely to the magnetic ring corresponding to the other Hall sensor, the output shaft 500 is controlled to rotate reversely again, so as to realize the reciprocating rotation of the output shaft 500. The reciprocating rotation angle of the output shaft 500 can be adjusted by setting the spacing position of the two Hall sensors.

[0059] In an embodiment, as Figures 4 to 6 , a clamping portion 112 and a positioning post 113 are provided on the outer peripheral wall of the first sub-shell 110. The main control board 200 is clamped to the clamping portion 112 and has a positioning hole 210 that cooperates with the positioning post 113; the toothbrush core 10 further includes a connecting member that passes through the main control board 200 and is fixedly connected to the first sub-shell 110.

[0060] In this embodiment, through the cooperation of the positioning post 113 and the positioning hole 210, the main control board 200 is pre-installed on the first sub-shell 110, and through the action of the clamping portion 112, the main control board 200 is clamped and engaged on the first sub-shell 110. Subsequently, the main control board 200 and the first sub-shell 110 are fixedly connected through a connecting member to ensure the connection reliability between the main control board 200 and the first sub-shell 110. The connecting member can specifically be a screw. The number of the clamping portions 112 can be one, two, more than two, etc. Optionally, the clamping portion 112 and the positioning post 113 are arranged on both sides of the main control board 200 in the transverse direction, and the first sub-shell 110 is provided with at least two spaced clamping portions 112 along the longitudinal direction of the main control board 200. The connecting member passes through the middle of the main control board 200 to be fixedly connected to the first sub-shell 110. In this way, one side of the main control board 200 is clamped to the first sub-shell 110, the other side is inserted through the positioning post 113, and the middle is connected through the connecting member, which simplifies the connection structure while ensuring the connection reliability to improve the assembly efficiency of the main control board 200.

[0061] In an embodiment, please refer to Figure 1 、 Figure 2 and Figure 9, the length of the first sub-shell 110 is greater than that of the second sub-shell 120. The main control board 200 is fixedly installed on the first sub-shell 110. The second sub-shell 120 is spliced on the upper part of the first sub-shell 110, and the first sub-shell 110 is located below the second sub-shell 120 to form a battery accommodation chamber 114. The cable slot 121 is arranged adjacent to the battery accommodation chamber 114.

[0062] In this embodiment, thus, the first sub-shell 110 is fully utilized to install the battery. That is, the first sub-shell 110 serves both as the motor bracket 100 and the installation structure for the battery bracket and the main control board 200. This makes the structure of the entire toothbrush core 10 more compact and the number of components fewer, which is conducive to the miniaturization of the electric toothbrush. Making the cable slot 121 adjacent to the battery accommodation chamber 114, that is, the cable slot 121 is located at the lower part of the second sub-shell 120, can be closer to the bottom end of the motor body 300, thereby shortening the wiring length of the flexible circuit board 410 and making the overall structure more concise and reasonable.

[0063] The present utility model also proposes an electric toothbrush, as Figure 10 shown. The toothbrush handle includes a brush head, a brush handle housing 20, and a toothbrush core 10. The toothbrush core 10 is installed in the brush handle housing 20. The brush head is connected to the output shaft 500 of the toothbrush core 10 that extends out of the brush handle housing 20. The specific structure of this toothbrush core 10 refers to the above embodiment. Since this toothbrush handle adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. There can be many structures for the brush head and the brush handle housing 20, and there can also be many connection structures between the toothbrush core 10 and the brush handle housing 20. For details, reference can be made to the existing designs, which will not be elaborated here.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A toothbrush movement, characterized in that: include: A motor bracket, the motor bracket comprising a first sub-shell and a second sub-shell spliced ​​to each other in a thickness direction thereof, wherein the first sub-shell and the second sub-shell enclose an installation space, and a wiring notch is formed at the splicing of the first sub-shell and the second sub-shell; A main control board, fixedly mounted on an outer wall surface of the first sub-shell or the second sub-shell; A motor body, fixedly connected in the installation space; as well as A circuit board module is used to detect the motion parameters of the motor body. The circuit board module includes a flexible circuit board. A portion of the flexible circuit board is arranged in the installation space, and another portion passes through the installation space through the wiring gap and is electrically connected to the main control board.

2. The toothbrush core according to claim 1, characterized in that: The flexible circuit board includes a horizontal portion and a lateral extension portion which are connected to each other. The board surface of the horizontal portion is arranged corresponding to the bottom end of the motor body, the board surface of the lateral extension portion faces the peripheral wall of the motor body and is arranged around the outer periphery of the motor body, and one end of the lateral extension portion passes through the wiring notch to be electrically connected to the main control board.

3. The toothbrush core according to claim 2, characterized in that: The main control board is fixed to the outer surface of the first sub-shell, and the lateral extension portion includes a limiting section and a surrounding section, wherein the limiting section is arranged at the outer periphery of the first sub-shell; and in the length direction of the motor body, the length of the limiting section is greater than the length of the wiring gap; the surrounding section is arranged around the outer periphery of the motor body and is clamped between the second sub-shell and the motor body, and one end of the surrounding section extends out of the wiring gap and is connected to the surrounding section.

4. The toothbrush core according to claim 3, characterized in that: The transverse extension portion further includes an inserting section connected to one end of the limiting section away from the surrounding section, the inserting section extends along the board surface of the main control board, and the inserting section is inserted into the main control board.

5. The toothbrush core according to claim 3, characterized in that: The wiring notch is provided on the joint surface of the second subshell, and a relief space is formed at the outer peripheral wall of the first subshell corresponding to the wiring notch. The portion of the surrounding section extending out of the wiring notch is accommodated in the relief space.

6. The toothbrush core according to any one of claims 2 to 5, characterized in that: The flexible circuit board also includes a longitudinal extension portion with two ends respectively connected to the horizontal portion and the transverse extension portion, and the longitudinal extension portion extends along the length direction of the motor body.

7. The toothbrush core according to claim 6, characterized in that: The motor body includes a motor shell and an end shell, the end shell is fixedly connected to the bottom end of the motor shell, the outer peripheral sleeve of the motor shell is provided with a foam buffer sleeve, the horizontal portion is provided at the bottom end of the end shell, the longitudinal extension portion extends to the motor shell, and the longitudinal extension portion and / or the transverse extension portion are partially bonded to the foam buffer sleeve.

8. The toothbrush core according to any one of claims 2 to 5, characterized in that: The circuit board module also includes a hard support plate fixed to the bottom end of the motor body, the horizontal portion is fixed to the hard support plate, and a sensor for detecting motion parameters of the output shaft of the motor body is provided on the horizontal portion.

9. The toothbrush core according to any one of claims 1 to 5, characterized in that: The outer peripheral wall of the first subshell is provided with a clamping portion and a positioning column, the main control board is clamped to the clamping portion and has a positioning hole that cooperates with the positioning column; the toothbrush movement also includes a connecting piece, which passes through the main control board and is fixedly connected to the first subshell.

10. The toothbrush core according to any one of claims 1 to 5, characterized in that: The length of the first subshell is greater than that of the second subshell, the main control board is fixedly mounted on the first subshell, the second subshell is spliced ​​to the upper part of the first subshell, and the first subshell is located at the lower part of the second subshell to form a battery accommodating compartment, and the cable notch is arranged adjacent to the battery accommodating compartment.

11. An electric toothbrush, characterized in that: It comprises a brush head, a brush handle shell, and a toothbrush core as claimed in any one of claims 1 to 10, wherein the toothbrush core is installed in the brush handle shell, and the brush head is connected to an output shaft of the toothbrush core extending out of the brush handle shell.

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