Handle housing, device body assembly, and oral cleaner

Abstract

Disclosed in the present application are a handle housing, a device body assembly and an oral cleaner. The handle housing is in a barrel shape having one end opened. An accommodation cavity is formed in the handle housing so as to enable mounting of a motor support and a battery support. A cavity wall of the accommodation cavity in the axial direction of the handle housing is provided with an assembling slot and limiting slots, a through hole being penetratingly formed in the bottom of the assembling slot, the limiting slots being located on the circumference of the assembling slot and communicating with the assembling slot, and both the assembling slot and the limiting slots being fitted to the motor support. The cavity wall of the accommodation cavity is further provided with rail slots matching the battery support, the rail slots and the limiting slots being spaced apart in the handle housing in the axial direction, and the rail slots and the limiting slots being aligned in the circumferential direction of the handle housing. Such arrangement can allow simultaneous extraction of a mold core used for forming rails and a mold core used for forming the limiting slots, thereby simplifying mold core extraction steps for manufacturing the handle housing, and facilitating the production and manufacturing of the handle housing.

Description

Handle housing, body assembly, and oral cleaner Technical Field

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

[0002] Oral cleaning appliances such as electric toothbrushes are becoming increasingly common household cleaning appliances. Existing electric toothbrushes are usually composed of a body assembly and a cleaning head. The body assembly includes a housing, a motor, a motor bracket and a battery. The motor is fixedly assembled in the housing through the motor bracket, and the battery is installed in the housing and supplies power to the motor.

[0003] The shell of an existing electric toothbrush is provided with an installation cavity, and the installation cavity is provided with an eccentric limit groove on its axial cavity wall. The limit groove cooperates with the motor bracket and limits the rotation of the motor bracket relative to the shell. The cavity wall of the installation cavity of the shell is also provided with a track groove extending along the axial direction. The track groove cooperates with the convex strip on the battery bracket to limit the rotation of the battery bracket relative to the shell.

[0004] However, the track grooves and limit grooves on the existing shell are distributed at intervals in the circumferential direction of the shell, which makes it easy for the mold cores used to form the track grooves and the mold cores used to form the limit grooves to interfere with each other when they are pulled out at the same time. That is to say, the mold cores used to form the track grooves and the mold cores used to form the limit grooves need to be pulled out twice, which makes the core pulling process more complicated, so it is urgent to solve the problem.

[0005] Utility Model Content

[0006] The main purpose of this application is to propose a handle shell, aiming to solve the problem that the existing handle shell is inconvenient to pull the core during injection molding.

[0007] To achieve the above-mentioned purpose, the present application proposes a handle housing, which is in the shape of a cylinder with one end open, and has a receiving cavity inside the handle housing for installing the motor bracket and the battery bracket;

[0008] The accommodating cavity is provided with an assembly groove and a limiting groove on the cavity wall in the axial direction of the handle housing, a through hole is penetrated through the bottom of the assembly groove, the limiting groove is located on the circumferential side of the assembly groove and communicates with the assembly groove, and both the assembly groove and the limiting groove cooperate with the motor bracket;

[0009] The cavity wall of the accommodating cavity is further provided with a track groove cooperating with the battery holder, the track groove and the limiting groove are arranged axially spaced apart from each other in the handle shell, and the track groove and the limiting groove are arranged in the circumferential direction of the handle shell.

[0010] In some embodiments of the present invention, there are two limit grooves, and the two limit grooves are arranged on two opposite sides of the assembly groove, and the two limit grooves are connected to the assembly groove; there are two track grooves, and the two track grooves are arranged at intervals along the circumference of the handle shell, and the two track grooves are arranged in a one-to-one correspondence with the two limit grooves, and the two track grooves are respectively aligned with the corresponding limit grooves in the circumference of the handle shell.

[0011] In some embodiments of the present invention, the cavity wall of the accommodating cavity is provided with two first ribs and two second ribs, the two first ribs are arranged opposite to each other, the two first ribs are bent in a direction away from each other and are arranged in an arc shape, and the two first ribs and the cavity wall of the accommodating cavity are jointly arranged to form the assembly groove; the two second ribs are arranged opposite to each other and are respectively connected to the ends of the two first ribs on the same side, the two second ribs are recessed in a direction away from each other, and the two second ribs and the cavity wall of the accommodating cavity are respectively arranged to form the limiting groove.

[0012] In some embodiments of the present invention, the side of each first rib facing away from the other first rib is further connected to the cavity wall of the accommodating cavity through a plurality of first reinforcing ribs, and the side of each second rib facing away from the other second rib is further connected to the cavity wall of the accommodating cavity through a plurality of second reinforcing ribs.

[0013] In some embodiments of the present invention, three first reinforcing ribs are provided on the side of each first convex rib facing away from the other first convex rib, and the three first reinforcing ribs are arranged at intervals along the extension direction of the corresponding first convex rib. The first reinforcing rib located in the middle position among the three first reinforcing ribs extends in the direction in which the two first convex ribs approach or move away from each other. The two first reinforcing ribs located on both sides of the three first reinforcing ribs are respectively arranged at an angle to the first reinforcing rib located in the middle position, and the spacing between the two first reinforcing ribs located on both sides of the three first reinforcing ribs gradually increases in the direction away from the corresponding first convex rib.

[0014] In some embodiments of the present invention, a relief notch is provided on a side of each first rib away from the cavity wall of the accommodating cavity.

[0015] In some embodiments of the present invention, the position where each first rib is provided with an avoidance notch is also connected to the cavity wall of the accommodating cavity through a first reinforcing rib, and each first reinforcing rib is located on the side of the corresponding first rib facing away from the other first rib.

[0016] In some embodiments of the present invention, a buckle groove is provided on the cavity wall of the accommodating cavity, and the buckle groove is provided at one end of the track groove away from the limiting groove, and the buckle groove is used to buckle with the buckle platform on the battery bracket.

[0017] The present invention also provides a body assembly of an oral cleaner, which includes a motor bracket, a battery bracket, a sealing sleeve and the handle shell as described above; wherein,

[0018] The motor bracket is connected to the battery bracket at one axial end of the handle housing, and the motor bracket is provided with a mounting platform and a limiting platform at the other axial end of the handle housing, the mounting platform cooperates with the assembly groove, and the limiting platform cooperates with the limiting groove;

[0019] The sealing sleeve includes a sealing body and a sealing lug, wherein the sealing body is sleeved on the outside of the mounting platform and abuts against the inner wall of the assembly groove, and the sealing lug is sleeved on the outside of the limiting platform and abuts against the inner wall of the limiting groove;

[0020] The outer peripheral wall of the battery holder is provided with an assembly rib, the assembly rib extends along the axial direction of the handle shell, the assembly rib is aligned with the limit platform in the circumferential direction of the handle shell, and the assembly rib cooperates with the track groove.

[0021] In some embodiments of the present invention, the mounting platform is provided with an avoidance recess, which is arranged to penetrate from the side of the mounting platform adjacent to the motor bracket to the side of the mounting platform away from the motor bracket, and the motor bracket is provided with a connecting hole at a position opposite to the avoidance recess, and the connecting hole is for a connecting piece connected to the motor to pass through; the sealing body is provided with a clearance notch at a position opposite to the avoidance recess.

[0022] In some embodiments of the present invention, the sealing lug has two sealing surfaces arranged back to back in the circumferential direction of the handle shell, each of the sealing surfaces is provided with a sealing bone position, each of the sealing bone position is extended axially along the handle shell, and each of the sealing bone position is used to abut against the inner wall corresponding to the limiting groove.

[0023] The present invention also provides an oral cleaner, which includes a cleaning head and the body assembly as described above, wherein the cleaning head is connected to the body assembly; wherein the body assembly includes a motor bracket, a battery bracket, a sealing sleeve and a handle shell;

[0024] The motor bracket is connected to the battery bracket at one axial end of the handle housing, and the motor bracket is provided with a mounting platform and a limiting platform at the other axial end of the handle housing, the mounting platform cooperates with the assembly groove, and the limiting platform cooperates with the limiting groove;

[0025] The sealing sleeve includes a sealing body and a sealing lug, wherein the sealing body is sleeved on the outside of the mounting platform and abuts against the inner wall of the assembly groove, and the sealing lug is sleeved on the outside of the limiting platform and abuts against the inner wall of the limiting groove;

[0026] The outer peripheral wall of the battery holder is provided with an assembly rib, the assembly rib extends along the axial direction of the handle shell, the assembly rib is aligned with the limit platform in the circumferential direction of the handle shell, and the assembly rib cooperates with the track groove.

[0027] The handle shell of the present invention is provided with a receiving cavity inside the handle shell, and an assembly groove and a limiting groove are provided on the cavity wall of the receiving cavity located in the axial direction of the handle shell, the limiting groove is located on the peripheral side of the assembly groove and is connected to the assembly groove, and a track groove is provided on the cavity wall of the receiving cavity, the track groove is spaced apart from the limiting groove in the axial direction of the handle shell, and the track groove and the limiting groove are aligned in the circumferential direction of the handle shell. With such an arrangement, when the handle shell is produced using a mold, the mold core for forming the track groove and the mold core for forming the limiting groove can be simultaneously translated toward the center area of ​​the receiving cavity, so that the mold core for forming the track groove and the mold core for forming the limiting groove can be simultaneously extracted, thereby simplifying the mold core pulling process for producing the handle shell and facilitating the production of the handle shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] FIG1 is a schematic structural diagram of an embodiment of a handle housing of the present invention;

[0030] FIG2 is a cross-sectional view along AA in FIG1 ;

[0031] FIG3 is a cross-sectional view along line BB in FIG1 ;

[0032] FIG4 is a schematic structural diagram of an embodiment of a fuselage assembly of the present invention;

[0033] FIG5 is a cross-sectional view taken along CC in FIG4 ;

[0034] FIG6 is a cross-sectional view along DD in FIG4 ;

[0035] FIG7 is an enlarged schematic diagram of a portion E in FIG6 ;

[0036] FIG8 is a schematic structural diagram of the motor bracket in FIG6 ;

[0037] FIG9 is a schematic structural diagram of the battery bracket in FIG6 ;

[0038] FIG10 is a schematic structural diagram of the sealing sleeve from a perspective of FIG6 ;

[0039] FIG11 is a schematic structural diagram of the sealing sleeve in FIG6 from another perspective;

[0040] FIG12 is a schematic structural diagram of an embodiment of an oral cleaning device of the present invention.

[0041] Description of Figure Numbers:

[0042] 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

[0043] 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.

[0044] Please refer to Figures 1 to 7. The utility model provides a handle shell 10, which is in a cylindrical shape with one end open. A accommodating cavity 10a is provided in the handle shell 10 to install the motor bracket 20 and the battery bracket 50; the accommodating cavity 10a is provided with an assembly groove 10b and a limiting groove 10c on the cavity wall in the axial direction of the handle shell 10, and a through hole 10d is penetrated through the groove bottom of the assembly groove 10b. The limiting groove 10c is located on the circumferential side of the assembly groove 10b and is connected to the assembly groove 10b, and the assembly groove 10b and the limiting groove 10c are both matched with the motor bracket 20; the cavity wall of the accommodating cavity 10a is also provided with a track groove 10e that matches the battery bracket 50, the track groove 10e and the limiting groove 10c are arranged at intervals in the axial direction of the handle shell 10, and the track groove 10e and the limiting groove 10c are aligned in the circumferential direction of the handle shell 10.

[0045] The handle housing 10 is arranged in an elongated strip shape for easy gripping by the user. The cross-sectional shape of the handle housing 10 is varied, and the cross-sectional shape of the handle housing 10 can be circular, elliptical, hexagonal, octagonal, or other shapes. The handle housing 10 can be made of a variety of materials. The handle housing 10 can be made entirely of plastic, or made of plastic and metal by secondary injection molding, or made entirely of metal. No specific limitation is made here.

[0046] There are many shapes of the assembly groove 10b. The assembly groove 10b can be circular, square, regular polygonal or other shapes. The shape of the assembly groove 10b is preferably circular, which facilitates the cooperation between the motor bracket 20 and the assembly groove 10b; there are also many shapes of the limit groove 10c. The limit groove 10c can be square, wedge-shaped or other shapes. The limit groove 10c is preferably square, which makes the torsional strength of the position where the motor bracket 20 cooperates with the limit groove 10c relatively high.

[0047] The through hole 10d is arranged in a circular shape and is used to allow the output shaft of the power supply motor to extend. The through hole 10d can directly cooperate with the output shaft of the motor. At this time, the aperture of the through hole 10d is equivalent to the outer diameter of the output shaft of the motor. The through hole 10d can also cooperate with the output shaft of the motor through a seal. At this time, the aperture of the through hole 10d can be larger than the output shaft setting of the motor. However, the aperture of the through hole 10d must always be smaller than the inner diameter setting of the open end of the handle housing 10.

[0048] There are many ways to form the track groove 10e. The track groove 10e can be formed by a groove structure on the cavity wall of the accommodating cavity 10a, or by a rib structure on the cavity wall of the accommodating cavity 10a. There is no specific limitation on the formation method of the track groove 10e. Preferably, the track groove 10e is formed by the rib structure on the cavity wall of the accommodating cavity 10a. Such an arrangement ensures that the thickness of the handle shell 10 is not reduced, thereby ensuring the strength of the handle shell 10.

[0049] When assembling the handle housing 10, the motor bracket 20 and the battery bracket 50, the mounting platform 21 on the motor bracket 20 is matched with the assembly groove 10b on the handle housing 10, and the limiting platform 22 on the motor bracket 20 is matched with the limiting groove 10c on the handle housing 10. The end of the motor bracket 20 away from the assembly groove 10b is connected to the battery bracket 50, and the assembly rib 51 on the outer peripheral wall of the battery bracket 50 is matched with the track groove 10e.

[0050] Since the motor bracket 20 and the battery bracket 50 are connected as one, and at the same time, the end of the motor bracket 20 away from the battery bracket 50 is constrained in the circumferential direction of the handle housing 10 under the action of the limit platform 22 and the limit groove 10c, and the battery bracket 50 is constrained in the circumferential direction of the handle housing 10 under the action of the assembly rib 51 and the track groove 10e, this ensures that the motor bracket 20 and the battery bracket 50 cannot rotate relative to the handle housing 10.

[0051] The handle housing 10 of the present invention is provided with a receiving cavity 10a inside the handle housing 10. The cavity wall of the receiving cavity 10a located in the axial direction of the handle housing 10 is provided with an assembly groove 10b and a limiting groove 10c. The limiting groove 10c is located on the circumferential side of the assembly groove 10b and is connected to the assembly groove 10b. A track groove 10e is provided on the cavity wall of the receiving cavity 10a. The track groove 10e is spaced apart from the limiting groove 10c in the axial direction of the handle housing 10. The track groove 10e and the limiting groove 10c are aligned in the circumferential direction of the handle housing 10. With such a configuration, when the handle housing 10 is manufactured using a mold, the mold core for forming the track groove 10e and the mold core for forming the limiting groove 10c can be simultaneously translated toward the center area of ​​the receiving cavity 10a. In this way, the mold core for forming the track groove 10e and the mold core for forming the limiting groove 10c can be simultaneously extracted, thereby simplifying the mold core pulling process for manufacturing the handle housing 10 and facilitating the production of the handle housing 10.

[0052] Please refer to Figures 2 and 5. In some embodiments of the present invention, there are two limiting grooves 10c, which are arranged on opposite sides of the assembly groove 10b. Both limiting grooves 10c are connected to the assembly groove 10b. There are two track grooves 10e, which are arranged at intervals along the circumference of the handle housing 10. The two track grooves 10e correspond to the two limiting grooves 10c one by one, and the two track grooves 10e are aligned with the corresponding limiting grooves 10c in the circumference of the handle housing 10. This arrangement allows the two opposite sides of the motor bracket 20 and the battery bracket 50 to maintain force balance when the handle housing 10 is connected to the motor bracket 20 and the battery bracket 50. At the same time, the internal structure of the handle housing 10 is symmetrical, which also facilitates the design of the mold.

[0053] Furthermore, the cavity wall of the accommodating cavity 10a is provided with two first ribs 11 and two second ribs 12. The two first ribs 11 are arranged opposite to each other, and the two first ribs 11 are bent in the direction away from each other and are arranged in an arc shape. The two first ribs 11 and the cavity wall of the accommodating cavity 10a are jointly arranged to form an assembly groove 10b; the two second ribs 12 are arranged opposite to each other and are respectively connected to the ends of the two first ribs 11 on the same side. The two second ribs 12 are concave in the direction away from each other, and the two second ribs 12 and the cavity wall of the accommodating cavity 10a are respectively arranged to form a limit groove 10c.

[0054] Based on the above technical solution, the above-mentioned two first ribs 11 and two second ribs 12 are alternately connected in sequence and arranged in a ring shape to form an assembly groove 10b and two limit grooves 10c with the cavity wall of the accommodating cavity 10a. Compared with the assembly groove 10b and the two limit grooves 10c formed by the cavity wall of the accommodating cavity 10a, the assembly groove 10b and the two limit grooves 10c are formed by the two first ribs 11 and the two second ribs 12 and the cavity wall of the accommodating cavity 10a, which can ensure that the thickness of the cavity wall of the accommodating cavity 10a is consistent at all locations, thereby ensuring the overall strength of the handle shell 10. At the same time, the setting of the two first ribs 11 and the two second ribs 12 can also improve the strength of the handle shell 10.

[0055] Furthermore, the side of each first rib 11 facing away from the other first rib 11 is connected to the wall of the accommodating cavity 10a via a plurality of first reinforcing ribs 13, and the side of each second rib 12 facing away from the other second rib 12 is connected to the wall of the accommodating cavity 10a via a plurality of second reinforcing ribs 14. This arrangement improves the connection strength between the two first ribs 11 and the two second ribs 12 and the handle housing 10, thereby preventing the two first ribs 11 and the two second ribs 12 from breaking due to excessive force when the motor bracket 20 and the handle housing 10 are assembled.

[0056] Furthermore, three first reinforcing ribs 13 are provided on the side of each first convex rib 11 facing away from the other first convex rib 11, and the three first reinforcing ribs 13 are arranged at intervals along the extension direction of the corresponding first convex rib 11. The first reinforcing rib 13 located in the middle position among the three first reinforcing ribs 13 extends in the direction of the two first convex ribs 11 approaching or moving away from each other, and the two first reinforcing ribs 13 located on both sides of the three first reinforcing ribs 13 are respectively arranged at an angle to the first reinforcing rib 13 located in the middle position, and the spacing between the two first reinforcing ribs 13 located on both sides of the three first reinforcing ribs 13 gradually increases in the direction away from the corresponding first convex rib 11.

[0057] The three first reinforcing ribs 13 connecting the first rib 11 to the cavity wall of the accommodating cavity 10a are radially arranged. Compared with the multiple first reinforcing ribs 13 extending in the same direction and providing support force in the same direction for the first rib 11, the multiple first reinforcing ribs 13 in the above technical solution extend in different directions and provide support force in different directions for the first rib 11, and the support force provided by the multiple first reinforcing ribs 13 all points to the center position of the circle where the first rib 11 is located. In this way, the support strength of each part of the first rib 11 is equivalent, thereby avoiding the problem that the end of the first rib 11 in the extension direction is subjected to excessive force and easily deformed.

[0058] Please refer to Figures 2 and 7. In some embodiments of the present invention, each first rib 11 is provided with an avoidance notch 11 on one side of the cavity wall away from the accommodating cavity 10a. The setting of the avoidance notch 11 can increase the gap between the position where the first rib 11 is provided with the avoidance notch 11 and the motor bracket 20, so that other components can be installed on the position of the motor bracket 20 facing the avoidance notch 11. For example, fixed screws, detection sensors, detection circuit boards, etc. can be installed at the position of the motor bracket 20 opposite to the avoidance notch 11.

[0059] Furthermore, the location where each first rib 11 is provided with the escape notch 11 is connected to the wall of the accommodating cavity 10a via a first reinforcing rib 13. Each first reinforcing rib 13 is located on the side of the corresponding first rib 11 facing away from the other first rib 11. This arrangement ensures a strong connection between the location where each first rib 11 is provided with the escape notch 11 and the wall of the accommodating cavity 10a, while also avoiding the problem of the location where the first rib 11 is provided with the escape notch 11 being too low, which would result in the first rib 11 being relatively weak and prone to breakage.

[0060] Referring to Figures 3 and 9 , in some embodiments of the present invention, the wall of the accommodating cavity 10a is provided with a snap groove 10f. This snap groove 10f is located at the end of the track groove 10e distal from the retaining groove 10c. This snap groove 10f is designed to snap into engagement with the snap platform 52 on the battery holder 50. This arrangement facilitates the connection of the battery holder 50 to the handle housing 10. Furthermore, the placement of the snap groove 10f at the end of the track groove 10e distal from the assembly groove 10b also facilitates core pulling during the production of the handle housing 10. Specifically, the mold core for forming the track groove 10e and the mold core for forming the snap groove 10f are arranged axially with respect to the handle housing 10. The two mold cores for forming the snap groove 10f can be moved toward each other before core pulling. The mold core for forming the track groove 10e can then be withdrawn after the mold core for forming the snap groove 10f on the corresponding side has been withdrawn, facilitating mold core pulling.

[0061] Referring to Figures 4 to 7 , the present invention further provides a body assembly 100, which includes a motor bracket 20, a battery bracket 50, a sealing sleeve 30, and a handle housing 10. The specific structure of the handle housing 10 is similar to that of the above-mentioned embodiments. Since the body assembly 100 adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0062] Please refer to Figures 8 to 10 together. The motor bracket 20 is connected to the battery bracket 50 at one axial end of the handle housing 10, and the motor bracket 20 is provided with a mounting platform 21 and a limit platform 22 at the other axial end of the handle housing 10. The mounting platform 21 cooperates with the assembly groove 10b, and the limit platform 22 cooperates with the limit groove 10c; the sealing sleeve 30 includes a sealing body 31 and a sealing lug 32. The sealing body 31 is sleeved on the outside of the mounting platform 21 and abuts against the inner wall of the assembly groove 10b, and the sealing lug 32 is sleeved on the outside of the limit platform 22 and abuts against the inner wall of the limit groove 10c; the outer peripheral wall of the battery bracket 50 is provided with an assembly rib 51, which extends along the axial direction of the handle housing 10, and the assembly rib 51 is aligned with the limit platform 22 in the circumferential direction of the handle housing 10, and the assembly rib 51 cooperates with the track groove 10e.

[0063] It is worth noting that the handle shell 10 is arranged in a long strip shape, and the end of the handle shell 10 provided with the assembly groove 10b is usually closed, and the end of the handle shell 10 opposite to the assembly groove 10b is usually open. The open end of the handle shell 10 away from the assembly groove 10b is sealed by a bottom cover. When the motor bracket 20 and the battery bracket 50 are assembled into the handle shell 10, since the limit platform 22 on the motor bracket 20 and the assembly rib 51 on the battery bracket 50 are arranged at intervals in the axial direction of the handle shell 10, it is only necessary to assemble the assembly rib 51 on the battery bracket 50 into the track groove 10e on the handle shell 10, and push the battery bracket 50 and the motor bracket 20 along the axial direction of the handle shell 10, so that the mounting platform 21 on the motor bracket 20 can be assembled into the assembly groove 10b, and the limit platform 22 on the motor bracket 20 can be assembled from the groove 10b to the limit groove 10c.

[0064] Referring to Figures 8 and 11 , the mounting platform 21 is provided with a relief recess 21a extending from the side of the mounting platform 21 adjacent to the motor bracket 20 to the side of the mounting platform 21 facing away from the motor bracket 20. The motor bracket 20 is provided with connection holes 20a at positions opposite the relief recess 21a, through which the motor-connected connectors 40 pass. The sealing body 31 is provided with a relief notch 31a at a position opposite the relief recess 21a. This arrangement prevents the sealing body 31 from abutting against the connectors 40, which could lead to improper assembly between the motor bracket 20 and the handle housing 10.

[0065] Furthermore, please refer to Figures 2 and 7 together. The connecting hole 20a is at least partially arranged opposite to the first rib 11 on the corresponding side, and an avoidance notch 11 is provided at the position where the first rib 11 and the corresponding connecting hole 20a are arranged opposite to each other. This arrangement can, on the one hand, avoid contact between the two first ribs 11 and the corresponding connecting piece 40, and on the other hand, can also reduce the width of the avoidance recess 21a in the radial direction of the handle housing 10, thereby ensuring that the width of the mounting platform 21 in the radial direction of the handle housing 10 is large enough, thereby ensuring the strength of the mounting platform 21.

[0066] Further, please refer to Figure 7. In some embodiments of the present invention, the height of the mounting platform 21 in the axial direction of the handle housing 10 is greater than the depth of the assembly groove 10b in the axial direction of the handle housing 10. That is, after the mounting platform 21 is assembled into the assembly groove 10b, the motor bracket 20 and the first rib 11 and the second rib 12 are spaced apart. In this way, the motor bracket 20 and the handle housing 10 are isolated, that is, the position where the handle housing 10 is connected to the motor bracket 20 is isolated by the sealing sleeve 30, which is conducive to reducing the vibration and noise generated when the motor is working. On the other hand, the surface of the motor bracket 20 facing the first rib 11 and the second rib 12 can also be used for the installation of other components.

[0067] Please refer to Figures 5 and 10. In some embodiments of the present invention, the sealing lug 32 has two sealing surfaces 321 arranged in opposite directions on the circumference of the mounting platform 21. Each sealing surface 321 is provided with a sealing bone position 322. Each sealing bone position 322 is extended axially along the shell. When each sealing lug 32 is sleeved on the corresponding limit platform 22 and abuts against the inner wall of the corresponding limit groove 10c, the sealing bone position 322 on each sealing surface 321 abuts against the inner wall of the corresponding limit groove 10c and deforms. This not only makes the assembly between the limit platform 22 and the corresponding limit groove 10c more stable under the action of the sealing lug 32, but also makes the sealing effect of the sealing lug 32 better.

[0068] Please refer to Figure 7. In some embodiments of the present invention, the sealing body 31 partially extends into the through hole 10d and is sealed with the hole wall of the through hole 10d, that is, the sealing body 31 is arranged in a step-like shape, and the part with a larger outer diameter of the sealing body 31 cooperates with the assembly groove 10b, and the part with a smaller outer diameter of the sealing body 31 cooperates with the through hole 10d. With this arrangement, the sealing body 31 can be sealed with the handle housing 10, and at the same time, the sealing body 31 can be sealed with the output shaft of the motor, so that the setting of the sealing parts of the fuselage assembly 100 can be reduced.

[0069] Referring to Figure 12 , the present invention further provides an oral cleaning device 1000, which includes a cleaning head 200 and a body assembly 100, wherein the cleaning head 200 is connected to the body assembly 100. The specific structure of the body assembly 100 is similar to that of the above-mentioned embodiments. Since the oral cleaning device 1000 adopts all the technical solutions of all the above-mentioned embodiments, it also has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0070] 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 housing, characterized in that: The handle shell is in the shape of a cylinder with one end open, and a receiving cavity is provided inside the handle shell for installing the motor bracket and the battery bracket; The cavity wall of the accommodating cavity in the axial direction of the handle housing is provided with an assembly groove and a limiting groove, a through hole is penetrated through the groove bottom of the assembly groove, the limiting groove is located at the peripheral side of the assembly groove and communicated with the assembly groove, and the assembly groove and the limiting groove are both matched with the motor bracket; The cavity wall of the accommodating cavity is also provided with a track groove cooperating with the battery bracket, the track groove and the limiting groove are arranged at intervals in the axial direction of the handle shell, and the track groove and the limiting groove are arranged in alignment in the circumferential direction of the handle shell.

2. The handle housing according to claim 1, characterized in that: There are two limit grooves, which are arranged on two opposite sides of the assembly groove, and are both connected to the assembly groove. There are two track grooves, which are spaced apart along the circumference of the handle shell. The two track grooves correspond to the two limit grooves one by one, and the two track grooves are respectively aligned with the corresponding limit grooves in the circumference of the handle shell.

3. The handle housing according to claim 2, characterized in that: The cavity wall of the accommodating cavity is provided with two first convex ribs and two second convex ribs, the two first convex ribs are arranged opposite to each other, the two first convex ribs are bent in a direction away from each other and arranged in an arc shape, and the two first convex ribs and the cavity wall of the accommodating cavity are jointly surrounded to form the assembly groove; The two second convex ribs are arranged opposite to each other and are respectively connected to the ends of the two first convex ribs on the same side. The two second convex ribs are recessed in a direction away from each other. The two second convex ribs and the cavity wall of the accommodating cavity are respectively arranged to form the limiting groove.

4. The handle housing according to claim 3, characterized in that: The side of each first convex rib facing away from another first convex rib is connected to the cavity wall of the accommodating cavity through a plurality of first reinforcing ribs, and the side of each second convex rib facing away from another second convex rib is connected to the cavity wall of the accommodating cavity through a plurality of second reinforcing ribs.

5. The handle housing according to claim 4, characterized in that: Three first reinforcing ribs are arranged on the side of each first convex rib facing away from another first convex rib, and the three first reinforcing ribs are arranged at intervals along the extension direction of the corresponding first convex rib. The first reinforcing rib located in the middle of the three first reinforcing ribs extends in the direction in which the two first convex ribs approach or move away from each other. The two first reinforcing ribs located on both sides of the three first reinforcing ribs are respectively arranged at angles to the first reinforcing rib located in the middle, and the spacing between the two first reinforcing ribs located on both sides of the three first reinforcing ribs gradually increases in the direction away from the corresponding first convex rib.

6. The handle housing according to claim 3, characterized in that: A side of each of the first convex ribs away from the cavity wall of the accommodating cavity is provided with an avoidance notch.

7. The handle housing according to claim 6, characterized in that: The position where each first convex rib is provided with the avoidance notch is also connected to the cavity wall of the accommodating cavity through a first reinforcing rib, and each first reinforcing rib is located on the side of the corresponding first rib facing away from another first convex rib.

8. The handle housing according to claim 1, characterized in that: The cavity wall of the accommodating cavity is provided with a buckle groove, which is arranged at one end of the track groove away from the limiting groove, and the buckle groove is used to buckle with the buckle platform on the battery bracket.

9. A fuselage assembly, characterized in that: The body assembly includes a motor bracket, a battery bracket, a sealing sleeve and a handle housing as described in any one of claims 1 to 8; wherein, The motor bracket is connected to the battery bracket at one axial end of the handle housing, and the motor bracket is provided with a mounting platform and a limiting platform at the other axial end of the handle housing, the mounting platform cooperates with the assembly groove, and the limiting platform cooperates with the limiting groove; The sealing sleeve comprises a sealing body and a sealing lug, wherein the sealing body is sleeved on the outer side of the mounting platform and abuts against the inner wall of the assembly groove, and the sealing lug is sleeved on the outer side of the limiting platform and abuts against the inner wall of the limiting groove; The outer peripheral wall of the battery bracket is provided with an assembly rib, the assembly rib extends along the axial direction of the handle shell, the assembly rib is aligned with the limit platform in the circumferential direction of the handle shell, and the assembly rib cooperates with the track groove.

10. The fuselage assembly according to claim 9, characterized in that: The mounting platform is provided with an avoidance recess, and the avoidance recess is penetrated from a side of the mounting platform adjacent to the motor bracket to a side of the mounting platform away from the motor bracket. A connecting hole is provided at a position of the motor bracket opposite to the avoidance recess, and the connecting hole is for a connecting piece connected to the motor to pass through; and a clearance notch is provided at a position of the sealing body opposite to the avoidance recess.

11. The fuselage assembly according to claim 9, characterized in that: The sealing lug has two sealing surfaces arranged back to back in the circumferential direction of the handle shell, each of the sealing surfaces is provided with a sealing bone position, each of the sealing bone positions is extended axially along the handle shell, and each of the sealing bone positions is used to abut against the inner wall corresponding to the limiting groove.

12. An oral cleaning device, characterized in that: The invention comprises a cleaning head and a fuselage assembly according to any one of claims 1 to 11, wherein the cleaning head is connected to the fuselage assembly.

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