Handle assembly and tooth cleaner

Abstract

The present application discloses a handle assembly and a tooth cleaner. The handle assembly comprises a shell, a circuit board and a pad plate; the shell is elongated and is internally provided with an assembly space, the peripheral wall of the shell extends continuously, the shell comprises a trigger area and a grip area, and the trigger area and the grip area are arranged in the axial direction of the shell; the circuit board is installed in the assembly space, the circuit board is provided with an input press-key and a matching portion, and the input press-key is arranged corresponding to the trigger area; the pad plate comprises a flexible pad and a positioning portion disposed on the flexible pad, the flexible pad is located between the input press-key and the trigger area and separately resiliently abuts against the trigger area and the input press-key, and the positioning portion is matched with the matching portion so as to position the flexible pad in at least the width and length directions of the circuit board. Such an arrangement avoids displacement of the flexible pad, thereby ensuring the sensitivity of the press-key.

Description

Handle assembly and tooth cleaner Technical Field

[0001] The present application relates to the technical field of oral cleaning equipment, and in particular to a handle assembly and a teeth cleaner. Background Art

[0002] Tooth cleaners, such as electric toothbrushes, are increasingly becoming common household cleaning appliances. To ensure complete waterproofing, existing tooth cleaners generally do not have any holes in the handle housing, or the holes in the handle housing are blocked and no keycaps are installed. Consequently, triggering the push-buttons inside the handle can only be achieved through local deformation of the handle housing.

[0003] However, there is a certain gap between the handle shell of the existing tooth cleaner and the push-button on the circuit board. At the same time, the handle shell itself has a certain strength. If the pressing force applied to the handle shell is too strong or too weak, the button will not be triggered, so a solution is urgently needed.

[0004] Utility Model Content

[0005] The main purpose of this application is to provide a handle assembly, which aims to solve the problem of insensitive buttons of a tooth cleaner.

[0006] To achieve the above-mentioned purpose, the present application proposes a handle assembly, which includes a housing, a circuit board, and a backing plate; wherein,

[0007] The housing is arranged in an elongated strip shape and has an assembly space therein. The outer peripheral wall of the housing is continuously extended. The housing is provided with a trigger area and a grip area, and the trigger area and the grip area are arranged axially on the housing.

[0008] The circuit board is installed in the assembly space, and the circuit board is provided with an input button and a matching portion, and the input button is provided corresponding to the trigger area;

[0009] The pad includes a flexible pad and a positioning portion provided on the flexible pad. The flexible pad is located between the input key and the trigger area, and elastically abuts against the trigger area and the input key respectively; the positioning portion cooperates with the mating portion to position the flexible pad at least in the width and length directions of the circuit board.

[0010] In some embodiments of the present invention, the mating portion includes at least two positioning holes, and the at least two positioning holes are respectively provided through the circuit board in a direction away from the flexible pad.

[0011] The positioning portion includes at least two positioning feet, one end of at least two positioning feet is respectively connected to the flexible pad, the other end of at least two positioning feet is respectively extended in the direction close to the circuit board, and at least two positioning feet are respectively cooperated with corresponding positioning holes for positioning.

[0012] In some embodiments of the present invention, the positioning foot is made of a flexible material, and the positioning foot includes a connecting section and a limiting section. One end of the connecting section is connected to the flexible pad, and the other end of the connecting section extends toward the circuit board and passes through the corresponding positioning hole. The limiting section is provided at one end of the connecting section that passes through the corresponding positioning hole, and the limiting section protrudes laterally from the limiting section and abuts against the side of the circuit board facing away from the flexible pad.

[0013] In some embodiments of the present invention, the limiting section is extended along the circumference of the connecting section, and the outer diameter of the limiting section is gradually reduced in a direction from the flexible pad toward the circuit board.

[0014] In some embodiments of the present invention, the limiting section is provided with a cutting surface, the cutting surface extends from the flexible pad toward the circuit board, and the cutting surface is also provided parallel to the axis of the connecting section.

[0015] In some embodiments of the present invention, the positioning foot also includes a force-bearing section, one end of the force-bearing section is connected to an end of the connecting section away from the flexible pad, and the other end of the force-bearing section is extended toward an end away from the connecting section. The connection position between the force-bearing section and the connecting section is provided with an annular cut, and the annular cut is extended along the circumference of the connecting section.

[0016] In some embodiments of the present invention, at least two of the positioning holes are arranged at intervals in the length direction of the circuit board; the mating portion further includes at least two plug-in holes, and at least two of the plug-in holes are arranged at intervals along the width direction of the circuit board; the positioning portion further includes at least two plug-in columns, and at least two of the plug-in columns are respectively plugged into and mated with the plug-in holes at corresponding positions.

[0017] In some embodiments of the present invention, the number of the positioning holes is two, the number of the plugging holes is two, and the line connecting the two positioning holes intersects with the line connecting the two plugging holes and is arranged at an angle.

[0018] In some embodiments of the present invention, at least two of the positioning holes are arranged at intervals in the length direction of the circuit board; the positioning portion also includes two limiting bosses, which are arranged on two opposite sides of the flexible pad in the width direction of the circuit board, and both of the limiting bosses extend toward the circuit board, and the two limiting bosses respectively abut and cooperate with one side of the flexible pad in the width direction of the circuit board.

[0019] In some embodiments of the present invention, positioning notches are recessed on both sides of the circuit board in the width direction, and the two positioning notches have a first side wall and a second side wall that are oppositely arranged in the length direction of the circuit board. The first side walls of the two positioning notches are arranged to pass through the length direction of the circuit board, and the two limiting bosses are respectively assembled to the corresponding positioning notches, and the two limiting bosses are respectively abutted against the second side walls of the corresponding positioning notches.

[0020] In some embodiments of the present invention, there are two positioning holes, and the two positioning holes are spaced apart along the length direction of the circuit board. One of the two positioning holes is located between the two positioning notches, and the two positioning holes are arranged on both sides of the second side wall in the length direction of the circuit board.

[0021] In some embodiments of the present invention, the flexible pad includes a main body, a support platform and a first convex bump, the main body is arranged between the shell and the circuit board, the support platform is connected to the main body and extends toward the circuit board, the support platform abuts against the circuit board so that the main body is spaced apart from the circuit board and elastically abuts against the trigger area, the first convex bump is arranged on the side of the main body opposite to the input button, and the first convex bump is used to elastically abut against the input button.

[0022] In some embodiments of the present invention, the flexible pad further includes a second convex bump, which is arranged on the side of the body facing away from the circuit board, and the second convex bump is arranged opposite to the first convex bump, and the second convex bump is used to elastically abut against the trigger area.

[0023] In some embodiments of the present invention, the input button includes an elastic arm and a strain sensor, the elastic arm is connected to the circuit board and arranged parallel to the circuit board, and the strain sensor is arranged at the position where the elastic arm is connected to the circuit board; the free end of the elastic arm is provided with the positioning hole, the first bulge is elastically abutted against the free end of the elastic arm, and the positioning foot is arranged on the side of the first bulge adjacent to the elastic arm.

[0024] The present invention also provides a tooth cleaner, comprising a cleaning head and a handle assembly, wherein the cleaning head is connected to the handle assembly, and the handle assembly comprises a housing, a circuit board, and a backing plate; wherein,

[0025] The housing is arranged in an elongated strip shape and has an assembly space therein. The outer peripheral wall of the housing is continuously extended. The housing is provided with a trigger area and a grip area, and the trigger area and the grip area are arranged axially on the housing.

[0026] The circuit board is installed in the assembly space, and the circuit board is provided with an input button and a matching portion, and the input button is provided corresponding to the trigger area;

[0027] The pad includes a flexible pad and a positioning portion provided on the flexible pad. The flexible pad is located between the input key and the trigger area, and elastically abuts against the trigger area and the input key respectively. The positioning portion cooperates with the mating portion to position the flexible pad at least in the width and length directions of the circuit board.

[0028] The present invention defines an assembly space within a housing, forming a trigger area and a gripping area on the housing. A circuit board is mounted within the assembly space, the circuit board being provided with input buttons and a mating portion, with the input buttons being positioned corresponding to the trigger areas. A pad is mounted within the assembly space, with a positioning portion connected to the mating portion to position a flexible pad between the circuit board and the housing. The flexible pad also elastically abuts against the trigger area and the input buttons, respectively. With this arrangement, when the trigger area is pressed inward and deformed by an external force, the flexible pad is acted upon by the external force to move toward the circuit board and abut against the input buttons. The abutment of the input buttons allows control commands to be input, thus preventing idle travel when the trigger area is pressed, which can lead to unresponsive input buttons. Furthermore, the coordination of the positioning portion and the mating portion ensures that the flexible pad remains relatively fixed to the circuit board 20 in both the longitudinal and width directions, preventing displacement of the flexible pad relative to the circuit board and misalignment of the flexible pad with the input buttons, thereby ensuring that each press of the trigger area triggers the input buttons. Furthermore, the flexible pad, positioned between the circuit board and the housing, also provides a vibration-damping and noise-reducing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] FIG1 is a cross-sectional view of an embodiment of a handle assembly of the present invention;

[0031] FIG2 is a schematic structural diagram of the housing in FIG1 ;

[0032] FIG3 is a schematic structural diagram of the circuit board in FIG1 ;

[0033] FIG4 is a schematic structural diagram of an embodiment of the backing plate in FIG1 ;

[0034] FIG5 is a schematic diagram of the assembled circuit board and backing plate in FIG1 from one perspective;

[0035] FIG6 is a schematic diagram of the assembled circuit board and backing plate in FIG1 from another perspective;

[0036] FIG7 is a cross-sectional view of the assembled circuit board and backing plate in FIG1 ;

[0037] FIG8 is a schematic structural diagram of another embodiment of the pad in FIG1 ;

[0038] FIG9 is a cross-sectional view of the backing plate in FIG4 ;

[0039] FIG10 is a schematic structural diagram of an embodiment of a teeth cleaning device according to the present invention.

[0040] Description of Figure Numbers:

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] Please refer to Figures 1 to 6. The present invention provides a handle assembly 100, which includes a shell 10, a circuit board 20 and a pad 30; the shell 10 is arranged in an elongated shape and has an assembly space 10a therein, the outer peripheral wall of the shell 10 is continuously extended, the shell 10 is provided with a trigger area 10b and a grip area 10c, and the trigger area 10b and the grip area 10c are arranged axially in the shell 10; the circuit board 20 is installed in the assembly space 10a, the circuit board 20 is provided with an input button 21 and a matching portion, and the input button 21 is arranged corresponding to the trigger area 10b; the pad 30 includes a flexible pad 31 and a positioning portion provided on the flexible pad 31, the flexible pad 31 is located between the input button 21 and the trigger area 10b, and is elastically abutted with the trigger area 10b and the input button 21 respectively, the positioning portion cooperates with the matching portion to position the flexible pad 31 at least in the width and length directions of the circuit board 20.

[0044] The housing 10 is in an elongated strip shape for easy gripping by the user. The cross-sectional shape of the housing 10 can be circular, elliptical, hexagonal, octagonal, or other shapes. The housing 10 can be made of a variety of materials. The housing 10 can be made entirely of plastic, or can be made of plastic and metal through secondary injection molding, or can be made entirely of metal. No specific limitations are given here.

[0045] The outer peripheral wall of the shell 10 is continuously extended, that is, the outer peripheral wall of the shell 10 is continuously extended along its axial and circumferential directions, that is, the outer peripheral wall of the shell 10 is a continuously extended surface, and the outer peripheral wall of the shell 10 does not have a hole structure. This arrangement, on the one hand, ensures that the shell 10 can be immersed in water or work in an environment with more water vapor, and on the other hand, it also allows the shell 10 to be completely washed with water, thereby facilitating the cleaning of the shell 10.

[0046] The housing 10 is provided with a trigger region 10b and a grip region 10c arranged axially therewith. The trigger region 10b can be connected to the grip region 10c, or can be spaced apart from the grip region 10c. In this case, a transition region is provided between the trigger region 10b and the grip region 10c. The trigger region 10b is typically located in the upper middle portion of the housing 10, while the grip region 10c is located in the lower portion of the housing 10. When a user grasps the grip region 10c, they can press the trigger region 10b with their thumb, making it easier for the user to grasp the housing 10 and press the trigger region 10b with one hand.

[0047] The circuit board 20 is fixedly mounted within the assembly space 10a. There are various ways to secure the circuit board 20, including snap-fitting, bonding, and other methods, which are not limited here. The input buttons 21 on the circuit board 20 can be mechanical buttons, pressure-sensitive buttons, or other press-type buttons, which are not limited here. The mating portions on the circuit board 20 can be holes, posts, or other structures with positioning functions.

[0048] The flexible pad 31 can be made of silicone, rubber, or other materials with good deformability. The positioning portion can be made of the same material as the flexible pad 31, or it can be made of a hard material such as metal or plastic. The structure of the positioning portion matches the structure of the mating portion on the circuit board 20. That is, if the mating portion has a hole structure, the positioning portion will have a corresponding post structure; if the mating portion has a hook structure, the positioning portion will have a corresponding buttonhole structure. As long as the positioning portion and the mating portion are properly matched, the flexible pad 31 can be fixed to the circuit board 20.

[0049] The present invention defines an assembly space 10a within a housing 10, forming a trigger area 10b and a gripping area 10c on the housing 10; a circuit board 20 is mounted within the assembly space 10a, the circuit board 20 being provided with an input button 21 and a mating portion, with the input button 21 being arranged corresponding to the trigger area 10b; a pad 30 is assembled within the assembly space 10a, with the positioning portion connected to the mating portion to position a flexible pad 31 between the circuit board 20 and the housing 10. The flexible pad 31 also elastically abuts against the trigger area 10b and the input button 21, respectively. With this arrangement, when the trigger area 10b is pressed inward and deformed by an external force, the flexible pad 31 is acted upon by the external force to move toward the circuit board 20 and abut against the input button 21. After the input button 21 is abutted, a control command is input, thereby avoiding the problem of idle travel when the trigger area 10b is pressed, which would otherwise cause the input button 21 to become insensitive. At the same time, the coordination between the positioning portion and the mating portion ensures that the flexible pad 31 remains relatively fixed to the circuit board 20 in both the length and width directions. This prevents displacement of the flexible pad 31 relative to the circuit board 20, thereby preventing misalignment between the flexible pad 31 and the input key 21. This ensures that each press of the trigger area 10b triggers the input key 21. Furthermore, the flexible pad 31, positioned between the circuit board 20 and the housing 10, also provides a vibration-absorbing and noise-reducing effect.

[0050] Please refer to Figures 3, 4, 6 and 7. In some embodiments of the present invention, the mating portion includes at least two positioning holes 22, and the at least two positioning holes 22 are respectively arranged to pass through the circuit board 20 in the direction away from the flexible pad 31; the positioning portion includes at least two positioning feet 32, one end of at least two positioning feet 32 ​​is respectively connected to the flexible pad 31, and the other ends of at least two positioning feet 32 ​​are respectively extended in the direction close to the circuit board 20, and the at least two positioning feet 32 ​​are respectively matched with the corresponding positioning holes 22 for positioning, that is, the positioning holes 22 and the positioning feet 32 ​​are connected by plugging, so that the assembly and disassembly of the positioning feet 32 ​​are facilitated, and the assembly and disassembly of the pad 30 and the circuit board 20 are facilitated.

[0051] Furthermore, the positioning foot 32 is made of a flexible material, and the positioning foot 32 includes a connecting section 321 and a limiting section 322. One end of the connecting section 321 is connected to the flexible pad 31, and the other end of the connecting section 321 extends toward the circuit board 20. The limiting section 322 protrudes laterally and the connecting section 321 is arranged away from the outer peripheral wall of the circuit board 20. With such an arrangement, when the positioning foot 32 is assembled with the positioning hole 22, the limiting section 322 can pass through the positioning hole 22 by generating elastic deformation. After passing through the positioning hole 22, the limiting section 322 abuts against the side of the positioning hole 22 facing away from the flexible pad 31, thereby limiting the flexible pad 31 in the direction in which the flexible pad 31 is away from the circuit board 20.

[0052] Furthermore, the limiting section 322 extends along the circumference of the connecting section 321 and is arranged around the connecting section 321. The outer diameter of the limiting section 322 is set to decrease in the direction from the flexible pad 31 to the circuit board 20. The limiting section 322 can be set in a conical shape, a truncated cone shape or other shapes. When the limiting section 322 passes through the positioning hole 22, the end of the limiting section 322 with a smaller outer diameter enters the positioning hole 22 first, and the end of the limiting section 322 with a larger outer diameter enters the positioning hole 22 later. This makes it convenient for the limiting section 322 to enter the positioning hole 22 on the one hand, and on the other hand, it is also convenient for the limiting section 322 to deform and pass through the positioning hole 22.

[0053] Furthermore, the limiting section 322 is provided with a cutting surface 3221, which extends from the flexible pad 31 to the circuit board 20. The cutting surface 3221 is also arranged parallel to the axis of the connecting section 321. The number of the cutting surfaces 3221 can be one or more. When there are multiple cutting surfaces 3221, the multiple cutting surfaces 3221 are arranged along the circumference of the limiting section 322.

[0054] Specifically, the limiting section 322 is provided with two cutting surfaces 3221, and the two cutting surfaces 3221 are arranged on two opposite sides of the limiting section 322. The setting of the two cutting surfaces 3221 can further reduce the overall volume of the limiting section 322, so that it is convenient for the limiting section 322 to pass through the positioning hole 22, and further facilitate the cooperation between the positioning foot 32 and the positioning hole 22.

[0055] Based on the fact that the positioning foot 32 includes a connecting section 321 and a limiting section 322, in some embodiments of the present utility model, the positioning foot 32 also includes a force-bearing section 323, one end of the force-bearing section 323 is connected to the end of the connecting section 321 away from the flexible pad 31, and the other end of the force-bearing section 323 is extended toward the end away from the connecting section 321. The connection position between the force-bearing section 323 and the connecting section 321 is provided with an annular cut 324, and the annular cut 324 is extended along the circumference of the connecting section 321.

[0056] When the positioning foot 32 is matched with the positioning hole 22, first pass the force-bearing section 323 away from the end of the connecting section 321 through the positioning hole 22, and then pull the force-bearing section 323 to drive the connecting section 321 and the limiting section 322 to move together, so that it is convenient for the connecting section 321 to be away from the end of the flexible pad 31 and the limiting section 322 to pass through the positioning hole 22, and after the connecting section 321 is away from the end of the flexible pad 31 and the limiting section 322 pass through the positioning hole 22, a greater force can be applied to the force-bearing section 323 to cause the force-bearing section 323 and the connecting section 321 to break at the annular cut 324.

[0057] Referring to Figures 3, 4, and 6, in some embodiments of the present invention, the circuit board 20 has a length direction parallel to the axial direction of the housing 10 and a width direction parallel to the radial direction of the housing 10. At least two positioning holes 22 are spaced apart along the length direction of the circuit board 20. The mating portion also includes at least two insertion holes 23, which are spaced apart along the width direction of the circuit board 20. The positioning portion also includes at least two insertion posts 33, which respectively engage with the insertion holes 23 at corresponding positions. This arrangement can simultaneously limit the position of the flexible pad 31 in the length and width directions of the circuit board 20, thereby ensuring a more secure positioning of the flexible pad 31.

[0058] It is worth noting that at least two plug holes 23 can be located on one side of the at least two positioning holes 22 in the width direction of the shell 10, and the at least two plug holes 23 can also be separately arranged on two opposite sides of the at least two positioning holes 22 in the length direction of the shell 10, which is not specifically limited here. Please refer to Figure 6. Specifically, the number of positioning holes 22 is two, and the number of plug holes 23 is two. The line connecting the two positioning holes 22 intersects with the line connecting the two plug holes 23 and is arranged at an angle, that is, the line connecting the two positioning holes 22 and the line connecting the two plug holes 23 are arranged in a "cross" or "X" shape. Preferably, the line connecting the two positioning holes 22 and the line connecting the two plug holes 23 are arranged in a "cross" shape. In this way, it can ensure that the flexible pad 31 is subjected to balanced force in the length and width directions of the shell 10, which is conducive to ensuring the stability of the flexible pad 31 after being positioned.

[0059] Please refer to Figures 3 to 6. In some embodiments of the present invention, the circuit board 20 has a length direction parallel to the axial direction of the shell 10 and a width direction parallel to the radial direction of the shell 10, and at least two positioning holes 22 are arranged at intervals in the length direction of the circuit board 20; the positioning portion also includes two limiting bosses 34, the two limiting bosses 34 are arranged on two opposite sides of the flexible pad 31 in the width direction of the circuit board 20, and the two limiting bosses 34 extend toward the circuit board 20, and the two limiting bosses 34 respectively abut and cooperate with one side of the flexible pad 31 in the width direction of the circuit board 20.

[0060] Based on the above technical solution, at least two positioning feet 32 ​​are matched with at least two positioning holes 22 in a one-to-one correspondence, which can limit the circuit board 20 in the length direction of the housing 10. The two limiting bosses 34 are respectively abutted and matched with the corresponding sides of the flexible pad 31 in the width direction, which can limit the circuit board 20 in the width direction of the housing 10, thereby making the positioning of the circuit board 20 more stable. In addition, the two limiting bosses 34 are made of flexible material, which makes it easier for the two limiting bosses 34 to clamp the circuit board 20 by deforming, thereby facilitating the assembly of the two limiting bosses 34 and the circuit board 20. In addition, the two limiting bosses 34 cover both sides of the circuit board 20 in the width direction, that is, the two limiting bosses 34 can also protrude from both sides of the circuit board 20 in the width direction, so that both sides of the circuit board 20 in the width direction can be cushioned.

[0061] Furthermore, positioning notches 24 are recessed on both sides of the circuit board 20 in the width direction. The two positioning notches 24 have a first side wall and a second side wall 25 that are oppositely arranged in the length direction of the circuit board 20. The first side walls of the two positioning notches 24 are both arranged to pass through along the length direction of the circuit board 20. The two limiting bosses 34 are respectively assembled to the corresponding positioning notches 24, and the two limiting bosses 34 are respectively abutted and fitted with the second side walls 25 of the corresponding positioning notches 24.

[0062] Such a configuration allows the two limiting bosses 34 to limit the limiting boss 34 in the length direction of the circuit board 20; at the same time, since the two limiting bosses 34 and at least two positioning holes 22 are spaced apart in the width direction of the circuit board 20, the entire flexible pad 31 is subjected to equal force at each position in the width direction of the circuit board 20; in addition, the first side wall of the positioning notch 24 is set through, which also facilitates the limiting boss 34 to be assembled into the positioning notch 24.

[0063] Furthermore, there are two positioning holes 22, and the two positioning holes 22 are spaced apart along the length direction of the circuit board 20. One of the two positioning holes 22 is located between the two positioning notches 24. The two positioning holes 22 are arranged on both sides of the second side wall 25 in the length direction of the circuit board 20, that is, the connecting line of the two positioning holes 22 and the connecting line of the two positioning notches 24 form a "T" shape. In this way, after the flexible pad 31 is assembled on the circuit board 20, the connecting line of the two positioning feet 32 ​​and the two limiting bosses 34 forms a triangle, so that the flexible pad 31 can be stably positioned on the circuit board 20.

[0064] Referring to FIG. 4 or FIG. 8 , in some embodiments of the present invention, the flexible pad 31 includes a body 311, a support platform 312, and a first protrusion 313. The body 311 is disposed between the housing 10 and the circuit board 20. The support platform 312 is connected to the body 311 and extends toward the circuit board 20. The support platform 312 abuts the circuit board 20, ensuring that the body 311 is spaced apart from the circuit board 20 and elastically abuts against the trigger area 10b. The first protrusion 313 is disposed on the side of the body 311 opposite the input button 21 and is configured to elastically abut against the input button 21. This arrangement reduces the contact area between the flexible pad 31 and the input button 21, thereby reducing the risk of false triggering of the input button 21. Furthermore, the spacing of the body 311 from the circuit board 20 facilitates heat dissipation from the circuit board 20.

[0065] Furthermore, the flexible pad 31 also includes a second bump 314, which is disposed on the side of the body 311 facing away from the circuit board 20. The second bump 314 is disposed opposite the first bump 313. The second bump 314 is configured to elastically abut the trigger area 10b. This configuration reduces the contact area between the body 311 and the trigger area 10b, further reducing the probability of false triggering of the input button 21. It should be noted that, referring to FIG. 9 , the projection of the second bump 314 in the direction of the body 311 approaching or away from the circuit board 20 is greater than or equal to the projection of the first bump 313 in the direction of the body 311 approaching or away from the circuit board 20. This configuration ensures that when the second bump 314 is pressed, it can effectively transmit external force to the first bump 313, thereby ensuring the sensitivity of the input button 21.

[0066] Referring to Figures 3 and 8 , in some embodiments of the present invention, the input button 21 includes an elastic arm 211 and a strain gauge sensor 212. The elastic arm 211 is connected to and parallel to the circuit board 20, and the strain gauge sensor 212 is located at the location where the elastic arm 211 connects to the circuit board 20. A positioning hole 22 is defined at the free end of the elastic arm 211, a first protrusion 313 elastically abuts against the free end of the elastic arm 211, and a positioning foot 32 is located on the side of the first protrusion 313 adjacent to the elastic arm 211. This arrangement prevents the elastic arm 211 from becoming misaligned with the first protrusion 313 after being pressed multiple times, thereby preventing the input button 21 from being triggered by pressing the trigger area 10b.

[0067] It is worth noting that the positioning hole 22 can also be set relative to the support platform 312. In this case, the positioning foot 32 can be set at a position where the support platform 312 is adjacent to the circuit board 20; the positioning foot 32 can also be set relative to the main body 311. In this case, the positioning foot 32 is set at a position where the main body 311 faces the circuit board 20; there is no limitation on the position of the positioning hole 22, it is only necessary to ensure that the positioning hole 22 and the positioning foot 32 are one-to-one corresponding.

[0068] Referring to Figure 10 , the present invention further provides a teeth cleaning device 1000, which includes a handle assembly 100 and a cleaning head 200, wherein the cleaning head 200 is connected to the handle assembly 100. The specific structure of the handle assembly 100 is similar to that of the above embodiments. Since the teeth cleaning device 1000 adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 handle assembly, characterized in that: The handle assembly includes a housing, a circuit board and a backing plate; wherein, The shell is arranged in a long strip shape and has an assembly space therein, the outer peripheral wall of the shell is continuously extended, the shell is provided with a trigger area and a grip area, and the trigger area and the grip area are arranged axially on the shell; The circuit board is installed in the assembly space, and the circuit board is provided with an input button and a matching portion, and the input button is provided corresponding to the trigger area; The pad includes a flexible pad and a positioning portion arranged on the flexible pad, the flexible pad is located between the input key and the trigger area, and elastically abuts against the trigger area and the input key respectively; the positioning portion cooperates with the matching portion to position the flexible pad at least in the width and length directions of the circuit board.

2. The handle assembly according to claim 1, characterized in that: The matching portion includes at least two positioning holes, and the at least two positioning holes are respectively arranged through the circuit board along a direction of the circuit board away from the flexible pad; The positioning portion includes at least two positioning feet, one end of at least two positioning feet is respectively connected to the flexible pad, the other end of at least two positioning feet is respectively extended in the direction close to the circuit board, and at least two positioning feet are respectively cooperated with corresponding positioning holes for positioning.

3. The handle assembly according to claim 2, characterized in that: The positioning foot is made of flexible material, and includes a connecting section and a limiting section. One end of the connecting section is connected to the flexible pad, and the other end of the connecting section extends toward the circuit board and passes through the corresponding positioning hole. The limiting section is arranged at one end of the connecting section passing through the corresponding positioning hole, and the limiting section protrudes laterally from the limiting section and abuts against the side of the circuit board facing away from the flexible pad.

4. The handle assembly according to claim 3, characterized in that: The limiting section is extended along the circumference of the connecting section, and the outer diameter of the limiting section is gradually reduced in a direction from the flexible pad toward the circuit board.

5. The handle assembly according to claim 4, characterized in that: The limiting section is provided with a cutting surface, the cutting surface extends from the flexible pad toward the circuit board, and the cutting surface is also arranged parallel to the axis of the connecting section.

6. The handle assembly according to claim 3, characterized in that: The positioning foot also includes a force-bearing section, one end of which is connected to an end of the connecting section away from the flexible pad, and the other end of the force-bearing section is extended toward the end away from the connecting section. An annular cut is provided at the connection position between the force-bearing section and the connecting section, and the annular cut is extended along the circumference of the connecting section.

7. The handle assembly according to claim 2, characterized in that: At least two of the positioning holes are arranged at intervals in the length direction of the circuit board; the matching portion also includes at least two plug-in holes, at least two of the plug-in holes are arranged at intervals along the width direction of the circuit board, and the positioning portion also includes at least two plug-in columns, at least two of the plug-in columns are respectively plugged and matched with the plug-in holes at corresponding positions.

8. The handle assembly according to claim 7, characterized in that: The number of the positioning holes is two, the number of the plugging holes is two, and the connecting line of the two positioning holes intersects with the connecting line of the two plugging holes and is arranged at an angle.

9. The handle assembly according to claim 2, characterized in that: At least two of the positioning holes are arranged at intervals in the length direction of the circuit board; the positioning portion also includes two limiting bosses, which are arranged on two opposite sides of the flexible pad in the width direction of the circuit board, and both of the limiting bosses extend toward the circuit board, and the two limiting bosses are respectively abutted and cooperated with one side of the flexible pad in the width direction of the circuit board.

10. The handle assembly according to claim 9, characterized in that The circuit board is provided with positioning notches on both sides in the width direction, and the two positioning notches have a first side wall and a second side wall that are relatively arranged in the length direction of the circuit board, and the first side walls of the two positioning notches are arranged to penetrate along the length direction of the circuit board, and the two limiting bosses are respectively assembled to the corresponding positioning notches, and the two limiting bosses are respectively abutted and matched with the second side walls of the corresponding positioning notches.

11. The handle assembly according to claim 10, characterized in that: There are two positioning holes, which are spaced apart along the length direction of the circuit board. One of the two positioning holes is located between the two positioning notches, and the two positioning holes are arranged on both sides of the second side wall in the length direction of the circuit board.

12. The handle assembly according to any one of claims 2 to 11, characterized in that The flexible pad includes a main body, a support platform and a first convex bump, the main body is arranged between the shell and the circuit board, the support platform is connected to the main body and extends toward the circuit board, the support platform abuts against the circuit board so that the main body is spaced apart from the circuit board and elastically abuts against the trigger area, the first convex bump is arranged on a side of the main body opposite to the input button, and the first convex bump is used to elastically abut against the input button.

13. The handle assembly according to claim 12, wherein: The flexible pad further includes a second convex bump, which is disposed on a side of the body facing away from the circuit board, and the second convex bump is disposed opposite to the first convex bump, and the second convex bump is used to elastically abut against the trigger area.

14. The handle assembly according to claim 12, wherein: The input button includes an elastic arm and a strain sensor, the elastic arm is connected to the circuit board and arranged parallel to the circuit board, and the strain sensor is arranged at the position where the elastic arm is connected to the circuit board; the free end of the elastic arm is provided with the positioning hole, the first bulge is elastically abutted against the free end of the elastic arm, and the positioning foot is arranged on a side of the first bulge adjacent to the elastic arm.

15. A tooth cleaner, characterized in that: It comprises a cleaning head and a handle assembly according to any one of claims 1 to 14, wherein the cleaning head is connected to the handle assembly.

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