CN220714076U - Oral care implement - Google Patents

Abstract

The present utility model provides an oral care implement comprising: a handle; a first circuit board; the cover body comprises an outer shell and an inner shell, a gap for accommodating the first circuit board is formed between the outer shell and the inner shell, sealant is filled in the gap, and one side of the cover body, far away from the handle, is a first end part; the upper cover is detachably assembled at the first end part, and at least one groove is formed in the side wall of the upper cover; the cover body is bilayer structure, the circuit board sets up in the clearance of shell and inner shell, it has sealed glue to pack in the clearance, the cover body has fine water-proof effects, the one end that the handle was kept away from to the cover body still is provided with the upper cover, the upper cover can be dismantled with the first tip of the cover body and be connected, when the cover body needs to be cleared up, unpack the upper cover, can scrub or the clear water washes the cover body, avoid influencing the disinfection effect because of the deposit of toothpaste and spot, guarantee the clean and tidy of the cover body, the design of recess is favorable to the dismantlement of upper cover, labour saving and time saving.

Description

Oral care implement

Technical Field

The utility model relates to the field of oral health, in particular to an oral care implement.

Background

In daily use, the toothbrush head after washing is wet, is not easy to dry when placed in a tooth glass, is easy to become a warm bed for bacteria to breed, and seriously affects the health of a user. In the prior art, some disinfection devices for toothbrush heads exist, but after a period of use, the devices are easy to accumulate toothpaste and stains which are difficult to clean on the inner wall, so that the disinfection effect is affected, and even secondary pollution is caused.

Disclosure of Invention

The present utility model aims to provide an oral care implement which aims to solve the problems set forth above.

The present utility model provides an oral care implement comprising:

a handle;

a first circuit board;

the cover body comprises an outer shell and an inner shell, a gap for accommodating the first circuit board is formed between the outer shell and the inner shell, sealant is filled in the gap, and one side of the cover body, far away from the handle, is a first end part;

the upper cover is detachably assembled at the first end part, and at least one groove is formed in the side wall of the upper cover.

In one embodiment, the oral care implement comprises a handle and a cover body, the cover body is of a double-layer structure, the circuit board is arranged in a gap between the outer shell and the inner shell, and sealant is filled in the gap, so that the cover body has a very good waterproof effect, an upper cover is further arranged at one end of the cover body far away from the handle, the upper cover is detachably connected with the first end of the cover body, and when the cover body needs to be cleaned, the upper cover is detached, so that the cover body can be scrubbed or flushed with clean water, and the toothpaste and dirt are prevented from being deposited.

Further, the side wall of the upper cover is provided with a first groove and a second groove, the first groove and the second groove are symmetrically arranged, and the two grooves are symmetrically arranged, so that the upper cover is conveniently detached, and a space for ventilation is provided, so that air in the cover body is communicated with air outside.

Further, the upper cover comprises a first clamping hook and a second clamping hook, the first clamping hook and the second clamping hook are respectively arranged in the first groove and the second groove, the arrangement of the clamping hooks can ensure firm connection between the upper cover and the first end part, the area of the grooves can be increased, and the cover body has better ventilation effect.

Further, the upper cover further comprises a first step part, a second step part and a first clamping part, and the first end part comprises a guide inclined plane, a second positioning part and a convex ring; the guide inclined plane has the contained angle with the central axis of the cover body, and first step portion and second location portion cooperate and are used for prescribing a limit to the position that the upper cover was packed into, and second step portion and bulge loop closely cooperate, and first joint portion cooperation is detained the lateral wall of bulge loop.

Specifically, the guide inclined plane has the function of guiding the installation of the upper cover, and meanwhile, the upper cover is in clearance fit with the first end part, so that the upper cover is also convenient to detach; the first step part is matched with the second positioning part to limit the loading position of the upper cover, so that the upper cover cannot sink into the cavity of the cover body; the second step part is in a concave state relative to the first step part and the first clamping part, and is tightly matched with the convex ring; the first clamping part is matched and buckled into the side wall of the convex ring, and the upper cover is assembled into the first end part.

Further, the upper cover further comprises a top wall and a first positioning part, the top wall is provided with anti-skid threads, and the first positioning part is used for outwards removing the upper cover relative to the first end part; the first end part also comprises a third positioning part, and the third positioning part is used for limiting the position of the first clamping part; the anti-skid threads are arranged to increase friction, the first positioning portion provides an operation space for outward removal, and the third positioning portion is used for limiting the position of the first clamping portion.

Further, a UV lamp is arranged on the first circuit board, a mounting groove and a first opening are formed in the inner shell, the first circuit board is mounted in the mounting groove, and the UV lamp is exposed from the first opening; the UV lamp can emit ultraviolet light to disinfect the oral cavity cleaning appliance, foam is arranged in a gap between the first circuit board and the first opening, and sealant can not overflow.

Further, a humidity sensor is arranged on the first circuit board, a second opening is formed in the inner shell, the humidity sensor is exposed out of the second opening, and foam is arranged in a gap between the first circuit board and the second opening; because of humidity can influence the disinfection effect of UV lamp greatly, can set up humidity transducer and detect the internal humidity of cover, when detecting humidity and be greater than the threshold value then extension UV lamp irradiation time, the cotton setting of bubble can make the sealant not overflow.

Further, the shell is provided with the light-transmitting window, the inner shell is provided with the third groove, the light-transmitting window corresponds to the third groove in position, light irradiated by the UV lamp can irradiate the light-transmitting window from the third groove, a user can intuitively find that the user is disinfecting, and convenience is brought to life of the user.

Further, the cover body further comprises a first conductive elastic needle set, the handle further comprises a second conductive elastic needle set and a second circuit board, the second circuit board is provided with a control module, and the second circuit board is electrically connected with the first circuit board through the first conductive elastic needle set and the second conductive elastic needle set; after the first conductive spring needle group and the second conductive spring needle component are in electrical contact, the control module automatically starts the UV lamp working mode and/or the travel lock control mode.

In one embodiment, the cover body is assembled on the handle, after the two groups of conductive spring pins are in electric contact, the UV lamp disinfection mode is automatically started, and the travel lock control mode can also be started at the same time, so that a switch key on the handle is invalid in the state, and the false touch is effectively avoided.

Further, a first buckling position is arranged on the inner shell, a first buckle is arranged on one side, close to the cover body, of the handle, a base is arranged on one side, far away from the cover body, of the handle, the base protrudes out of the handle, and a second buckle is arranged on the outer wall of the base; the first buckling position and the first snap fit assembly are used for fixing the cover body at one end, far away from the base, of the handle, the first buckling position and the second snap fit assembly are used for fixing the cover body at one end, close to the base, of the handle, namely, the cover body can be connected to the base, the length of the handle can be prolonged, and the comfort of handheld use is improved.

The utility model comprises a handle, a first circuit board, a cover body and an upper cover, wherein the cover body comprises an outer shell and an inner shell, a gap for accommodating the first circuit board is formed between the outer shell and the inner shell, sealant is filled in the gap, one side of the cover body, which is far away from the handle, is a first end part, the upper cover is detachably assembled on the first end part, at least one groove is formed in the side wall of the upper cover, the cover body has good waterproof performance, when the cover body needs to be cleaned, the upper cover can be directly scrubbed or flushed by clean water after being detached, the deposition of toothpaste and stains is avoided, the disinfection effect is influenced, the groove is designed to facilitate the detachment of the upper cover, time and labor are saved, and the customer experience is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates an overall schematic of an oral care implement in some embodiments;

FIG. 2 illustrates a schematic structural view of an oral care implement housing in some embodiments;

FIG. 3 illustrates an exploded schematic view of an oral care implement in some embodiments;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 illustrates a schematic cross-sectional structure of an oral care implement housing in some embodiments;

fig. 6 illustrates a schematic perspective view of an oral care implement in some embodiments;

FIG. 7 illustrates a schematic cross-sectional structure of an oral care implement in some embodiments;

FIG. 8 is an enlarged schematic view at B in FIG. 7;

FIG. 9 illustrates a schematic cross-sectional view of a humidity sensor in some embodiments;

FIG. 10 shows a schematic structural view of an upper cover in some embodiments;

FIG. 11 shows a schematic structural view of an upper cover in another embodiment;

fig. 12 shows a schematic view of the structure of the first end portion in another embodiment.

Wherein, each reference sign in the figure: 1000-an electric toothbrush; 100-a cover body; 200-handle; 101-a housing; 102-an inner shell; 103—a first end; 1031-an annular plane; 1032—a guide ramp; 1033-a second positioning portion; 1034-a collar; 1035-a third positioning portion; 104-a second end; 1041-spring needle opening; 105-upper cover; 1051-a top wall; 1052-first positioning portion; 1053-first step; 1054-a second step; 1055-first bayonet; 1056-first hook; 1057-second hook; 1058-first groove; 1059-second recess; 106-a first circuit board; 107-a first conductive pin set; 108-a second conductive spring pin set; 109-a first magnet; 110-a second magnet; 111-a second circuit board; 112-mounting slots; 113-soaking cotton; 114-a third groove; 115-UV lamp; 116-a light-transmitting window; 117-humidity sensor; 118-a first opening; 119-a second opening; 201-a base; 202-a first buckle; 203-a second clasp; 204 first fastening position; 205-avoiding a gap; 301-brush head; 302-control module.

Description of the embodiments

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

The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

In the following, the terms "comprises", "comprising", "having" and their cognate terms may be used in various embodiments of the present application are intended only to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing. The terms "first," "second," "third," and the like herein are used solely for distinguishing between descriptions and should not be construed as indicating or implying a relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, rotatably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiments of the present application provide an oral care implement including, but not limited to, an electric toothbrush, a dental rinse, and the like. The electric toothbrush is described below as an example, but is not particularly limited to the scope of protection. Some embodiments of the electric toothbrush are described in detail with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 and 2, an oral care implement according to an embodiment of the present utility model includes an electric toothbrush 1000, where the electric toothbrush 1000 includes a housing 100 and a handle 200, the housing 100 includes an outer housing 101 and an inner housing 102, a gap is formed between the outer housing 101 and the inner housing 102, a sealant is filled in the gap, a first end 103 is located at a side of the housing 100 away from the handle 200, a second end 104 is located at a side of the housing 100 near the handle 200, the electric toothbrush 1000 further includes an upper cover 105 and a first circuit board 106, the upper cover 105 is detachably assembled at the first end 103, a base 201 is disposed at an end of the handle 200 away from the housing 100, and the base 201 protrudes from the handle.

As shown in fig. 3 and 5, the inner wall of the inner shell 102 is provided with a first buckling position 204, one side of the handle 200, which is close to the cover body 100, is provided with a first buckle 202, the base 201 is provided with a second buckle 203, the first buckling position 204 and the first buckle 202 are assembled in a matching way to fix the cover body 100 at one end of the handle, which is far away from the base 201, the cover body 100 is fixed at one end of the handle, which is close to the base 201, namely, the cover body 100 can be connected to the base 201, which can be used for prolonging the length of the handle 200 and increasing the comfort of hand-held use.

It can be understood that the number of the first buckling position, the first buckling buckle and the second buckling buckle is at least one, and when the product needs to be connected more stably and firmly, the buckling positions and the buckling buckles can be arranged in a plurality; in addition, the first fastening portion 204 may be configured as a groove, and the first fastening portion 202 and the second fastening portion 203 are correspondingly configured as a convex ring, and the shapes of the groove and the convex ring are adapted.

In another embodiment, the inner housing 102 is further provided with a first magnet 109, and the side of the handle 200 near the cover 100 is provided with a second magnet 110, where the first magnet 109 and the second magnet 110 are attracted to each other. A third magnet (not shown) may be provided on the outer wall of the base 201, and the first magnet 109 and the third magnet may be attracted to each other.

It is understood that the number of the first magnet 109, the second magnet 110 and the third magnet is at least one, and when the product needs a larger attraction force, a plurality of magnets can be provided, and a plurality of shapes such as a ring shape, a semi-ring shape, a round shape, a square shape, an oval shape, a horseshoe shape or a racetrack shape can be provided, which is within the scope of protection of the present disclosure.

Referring to fig. 6 again, the inner case 102 is provided with a mounting groove 112 and a first opening 118, the first circuit board 106 is mounted in the mounting groove, the first circuit board 106 is provided with a UV lamp 115, the UV lamp 115 can emit ultraviolet light to disinfect the brush head 301, the UV lamp 115 is exposed from the first opening 118, collodion 113 is disposed in a gap between the first circuit board 106 and the first opening 118, and a waterproof coating is disposed on the UV lamp 115.

In one embodiment, the first circuit board 106 is firstly installed in the installation groove 112, then the installation groove 112 is filled with sealant, the collodion 113 is used for isolating the sealant, the sealant is prevented from overflowing, the cover body 100 after glue injection has good waterproof effect, when the cover body 100 needs to be cleaned, the upper cover 105 is detached, the cover body 100 can be scrubbed or flushed with clean water, the deposition of toothpaste and stains is prevented, the cleanness and the cleanliness of the toothpaste are ensured, and the occurrence of bacterial pollution is avoided.

It will be appreciated that the surface of the UV lamp 115 is cleaned while the cover 100 is being rinsed, so that the disinfection effect of the UV lamp 115 is ensured, and the effect of disinfection due to surface stains is avoided.

In addition, the outer shell 101 is provided with a light-transmitting window 116, the inner shell 102 is provided with a third groove 114, the positions of the light-transmitting window 116 and the third groove 114 correspond to each other, light irradiated by the UV lamp 115 can be irradiated onto the light-transmitting window 116 from the third groove 114, a user can intuitively see that the light is being disinfected, and convenience is brought to life of the user.

In one embodiment, the number of the third grooves 114 is two, the two third grooves 114 are symmetrically arranged, the number of the light-transmitting windows 116 is also two, and the positions of the two light-transmitting windows 116 and the two grooves 114 correspond to each other.

In another embodiment, the number of the third grooves 114 may be plural, and the number of the light-transmitting windows 116 may be plural, which may be adaptively adjusted according to the design requirements of the product.

As shown in fig. 3 and 4, the upper cover 105 further includes a first step portion 1053, a second step portion 1054, and a first clamping portion 1055, and the first end portion 103 includes a guiding inclined surface 1032, a second positioning portion 1033, and a convex ring 1034; the guide inclined surface 1032 forms an included angle with the central axis Y of the cover 100, the first step portion 1053 and the second positioning portion 1033 cooperate to define a position where the upper cover 105 is mounted, the second step portion 1054 and the collar 1034 cooperate tightly, and the first clamping portion 1055 engages and buckles the sidewall of the collar 1034.

Specifically, the guiding inclined surface 1032 has the function of guiding the installation of the upper cover 105, and meanwhile, the upper cover 105 is in clearance fit with the first end 103, which is also beneficial to the removal of the upper cover 105; the first step portion 1053 and the second positioning portion 1033 cooperate to define a position in which the upper cover 105 is installed without the upper cover 105 being trapped in the cavity of the housing 100; the second step portion 1054 is in a concave state relative to the first step portion 1053 and the first clamping portion 1055, and forms a tight fit with the convex ring 1034; the first snap-fit portion 1055 is matingly snapped into the sidewall of the collar 1034, i.e., the assembly of the upper cover 105 into the first end 103 is completed.

The upper cover 105 further comprises a top wall 1051 and a first positioning portion 1052, wherein the top wall 1051 is provided with anti-slip threads, and the first positioning portion 1052 is used for outwards detaching the upper cover 105 relative to the first end 103; the first end 103 further includes an annular plane 1031 and a third positioning portion 1035, the third positioning portion 1035 is used for further defining a position of the first clamping portion 1055, the anti-skid thread is beneficial to increasing friction force, the first positioning portion 1052 provides an operation space for being detached outwards, the third positioning portion 1035 is used for further defining a position of the first clamping portion 1055, and after assembly, the first clamping portion 1055 is located between a side wall of the convex ring 1034 and the third positioning portion 1035.

As shown in fig. 7 and 8, the cover 100 further includes a first conductive pin group 107, the handle 200 further includes a second conductive pin group 108 and a second circuit board 111, the second circuit board 111 is provided with a control module 302, and the second circuit board 111 and the first circuit board 106 are electrically connected through the first conductive pin group 107 and the second conductive pin group 108.

One end of the first conductive pin set 107 is welded on the first circuit board 106, the other end of the first conductive pin set 107 has a deformation space, one end of the second conductive pin set 108 is welded on the second circuit board 111, the second conductive pin set 108 has no deformation space, and after the first conductive pin set 107 and the second conductive pin set 108 are in electrical contact, the control module 302 automatically starts the UV lamp working mode and/or the travel lock control mode. The two groups of conductive spring pins are welded on one side of the circuit board, so that the space on the circuit board can be saved, the positions of the two groups of conductive spring pins and the circuit board are relatively fixed, displacement can not occur, and the service life is prolonged.

In one embodiment, the cover 100 is assembled on the handle 200, and after the two groups of conductive spring pins are electrically contacted, the UV lamp disinfection mode is automatically started, and the travel lock control mode can be started simultaneously as required, so that the switch key on the handle 200 is invalid in this state, and the false touch is effectively avoided.

It will be appreciated that the junction of the upper cover 105 and the handle 200 employs two sets of conductive pins for electrical connection, which provides better contact than conventional hard pins, and has a long life, and is not easily displaced or damaged.

In addition, under the teaching of the scheme, the number of the conductive elastic needle assemblies can be set to any one value of 4 groups, 6 groups, 8 groups or 10 groups, the number of the elastic needles of one group of conductive elastic needle assemblies can be set to any one value of 2, 3, 4, 5, 6, 7, 8, 9 or 10 groups, and the contact mode of the conductive elastic needle assemblies can be any one or combination of two of sliding connection and rotating connection, which are all within the protection scope of the scheme.

As shown in fig. 9, the first circuit board 106 may further be provided with a humidity sensor 117, the inner casing 102 is provided with a second opening 119, the humidity sensor 117 is exposed from the second opening 119, and foam is disposed in a gap between the first circuit board 106 and the second opening 119; because of humidity can influence the disinfection effect of UV lamp greatly, can set up humidity transducer 117 and detect the humidity in the cover body 100, detect humidity and be greater than the threshold value then extension UV lamp irradiation time, guarantee the disinfection effect, the setting of bubble cotton can make the sealant not overflow, makes the cover body 100 have good waterproof performance.

As shown in fig. 10, the side wall of the upper cover 105 is provided with a first groove 1058 and a second groove 1059, the first groove 1058 and the second groove 1059 are symmetrically arranged, and the two grooves are symmetrically arranged, so that on one hand, the upper cover 105 is easy to be detached, and on the other hand, a space for ventilation is provided, so that the air in the cover body 100 is communicated with the air outside.

As shown in fig. 11, in other embodiments, the upper cover 105 includes a first hook 1056 and a second hook 1057, the first hook 1056 and the second hook 1057 are respectively disposed in the first groove 1058 and the second groove 1059, and the arrangement of the hooks can ensure the firm connection between the upper cover 105 and the first end 103, and increase the area of the groove, so that the cover body has better ventilation effect.

In other embodiments, as shown in fig. 12, the first end 103 may be further provided with a relief notch 205 to facilitate manual removal of the upper cover 105 by a user.

It is understood that the avoidance gap 205 may be square, oval, racetrack, fan-shaped, pentagram-shaped, etc.; the number of the avoidance notches 205 is at least one, and can be set to be 2, 3, 4, 5 and the like, and the number can be adaptively adjusted according to the shape of the cover body or the design requirement of the product.

Compared with the prior art, the novel cleaning device has the advantages that dirt deposition is caused by inconvenient cleaning of the cover body, the cover body of the novel cleaning device is double-layered, the cover body is respectively an outer cover and an inner cover, a gap for accommodating a first circuit board is formed between the outer cover and the inner cover, sealant is filled in the gap, one side of the cover body, which is far away from the handle, is a first end part, the upper cover is detachably assembled at the first end part, at least one groove is formed in the side wall of the upper cover, the cover body has good waterproof performance, when the cover body needs to be cleaned, the upper cover can be directly scrubbed or flushed with clean water after being detached, the effect of cleaning is prevented from being influenced due to the deposition of toothpaste and dirt, the disassembly of the upper cover is facilitated due to the design of the groove, time and labor are saved, and the experience of customers is improved.

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

Claims (10)

1. An oral care implement, comprising:

a handle;

a first circuit board;

the cover body comprises an outer shell and an inner shell, a gap for accommodating the first circuit board is formed between the outer shell and the inner shell, sealant is filled in the gap, and one side, far away from the handle, of the cover body is a first end part;

the upper cover is detachably assembled at the first end part, and at least one groove is formed in the side wall of the upper cover.

2. The oral care implement of claim 1, wherein a first groove and a second groove are formed in a side wall of the upper cover, the first groove and the second groove being symmetrically disposed.

3. The oral care implement of claim 2, wherein the upper cover further comprises a first hook and a second hook, the first hook and the second hook being disposed in the first groove and the second groove, respectively.

4. The oral care implement of claim 1, wherein the upper cover further comprises a first step, a second step, and a first snap-fit portion, the first end comprising a guide ramp, a second positioning portion, and a collar;

the guide inclined plane is provided with an included angle with the central axis of the cover body, the first step part is matched with the second positioning part to limit the position where the upper cover is installed, the second step part is tightly matched with the convex ring, and the first clamping part is matched and buckled into the side wall of the convex ring.

5. The oral care implement of claim 4, wherein the upper cover further comprises a top wall provided with anti-slip threads and a first positioning portion for outwardly removing the upper cover relative to the first end;

the first end part further comprises a third positioning part, and the third positioning part is used for limiting the position of the first clamping part.

6. The oral care implement of claim 1, wherein the first circuit board is provided with a UV lamp, the inner housing is provided with a mounting slot and a first opening, the first circuit board is mounted in the mounting slot, the UV lamp is exposed from the first opening, and foam is disposed in a gap between the first circuit board and the first opening.

7. The oral care implement of claim 1 or claim 6, wherein the first circuit board is provided with a humidity sensor, the inner housing is provided with a second aperture, the humidity sensor is exposed from the second aperture, and foam is disposed in a gap between the first circuit board and the second aperture.

8. The oral care implement of claim 1, wherein the outer housing defines a light transmissive window and the inner housing defines a third recess, the light transmissive window corresponding in position to the third recess.

9. The oral care implement of claim 6, wherein the housing further comprises a first conductive pin set, the handle further comprises a second conductive pin set and a second circuit board, the second circuit board having a control module disposed thereon, the second circuit board and the first circuit board being electrically connected by the first conductive pin set and the second conductive pin set;

after the first conductive spring needle group is electrically contacted with the second conductive spring needle assembly, the control module automatically starts a UV lamp working mode and/or a travel lock control mode.

10. The oral care implement of claim 1, wherein a first catch is provided on the inner housing, a first catch is provided on a side of the handle adjacent the housing, a base is provided on a side of the handle remote from the housing, the base protrudes from the handle, and a second catch is provided on an outer wall of the base;

the first buckling position and the first snap fit assembly are used for fixing the cover body at one end, far away from the base, of the handle, and the first buckling position and the second snap fit assembly are used for fixing the cover body at one end, close to the base, of the handle.