CN209091694U - Electric toothbrush motor shaft waterproof construction and electric toothbrush - Google Patents

Abstract

The utility model relates to a kind of electric toothbrush motor shaft waterproof construction and electric toothbrushes, belong to electric toothbrush technology field.The inside of brush head offers the first accommodating chamber open at one end, connector is located in the first accommodating chamber and is resisted against on the inner wall of brush head, connector is located at the open end of the first accommodating chamber, handle casing includes the second accommodating chamber, the motor shaft of brushless motor is located in the second receiving and the first accommodating chamber, connector is sheathed on the outside of motor shaft and is clamped with motor shaft, handle casing is connect with brush head by silicone gasket, silicone gasket is sheathed on the outside of motor shaft and is tightly connected with motor shaft, and connector is sheathed on the outside of silicone gasket and is tightly connected with silicone gasket.The electric toothbrush motor shaft waterproof construction and electric toothbrush, significantly more efficient it can solve motor shaft and the waterproof problem at the cooperation of handle shell, assembly is simple, structural member is few, at low cost, reduces the vibrating noise of motor shaft and brush head, improves the service life of electric toothbrush product.

Description

Electric toothbrush motor shaft waterproof construction and electric toothbrush

Technical field

The utility model relates to electric toothbrush technology fields, in particular to a kind of electric toothbrush motor shaft waterproof knot Structure and electric toothbrush.

Background technique

Currently on the market acoustic toothbrush motor shaft and handle cooperation at by flexible glue seal waterproof, due to sound wave adult Toothbrush motor or so wobble frequency is up to 30000 beats/min or more, and most product increases metal in flexible glue and machine mandrel's matching part Bullet circle compression, the head components such as plastic cement nut cap play the role of tightening silica gel clamping motor axis, but actually use process and work as In, because the influences such as motor shaft swing, flexible glue mildew, dirt, material ageing will lead to product failure after leak.

Utility model content

The purpose of this utility model is that in view of the above-mentioned problems, provide a kind of electric toothbrush motor shaft waterproof construction, it can be more Add the waterproof problem at effective solution motor shaft and the cooperation of handle shell, assembly is simple, structural member is few, at low cost, drop The low vibrating noise of motor shaft and brush head, improves the service life of electric toothbrush product, improves the above problem.

Another of the utility model is designed to provide a kind of electric toothbrush, motor shaft good water-proof effect, and low noise mentions High service life, meets the needs of user.

The utility model is realized in this way:

The embodiments of the present invention provide a kind of electric toothbrush motor shaft waterproof construction, including brush head assembly and handle Component, the brush head assembly include brush head and connector, and the inside of the brush head offers the first accommodating chamber open at one end, institute It states connector to be located in first accommodating chamber and be resisted against on the inner wall of the brush head, the connector is located at described first and holds Receive the open end of chamber, the Handleset includes handle casing and brushless motor, and the handle casing includes the second accommodating chamber, institute It states brushless motor to be installed in second accommodating chamber, the motor shaft of the brushless motor is located at described second and accommodates and described the In one accommodating chamber, the connector be sheathed on the outside of the motor shaft and with the motor shaft be clamped, the handle casing with The brush head by silicone gasket connect, the silicone gasket be sheathed on the outside of the motor shaft and with the motor sealing Connection, the connector are sheathed on the outside of the silicone gasket and are tightly connected with the silicone gasket.

In the utility model optional embodiment, the motor shaft offers the first groove and the second groove, and described One groove is located in first accommodating chamber, and the connector is connected in first groove, and second groove is located at institute State the junction of the first accommodating chamber Yu the second accommodating chamber, second groove is circumferentially distributed around the motor shaft, and described the Outer surface radially extending along the motor shaft of two grooves by the motor shaft, close first appearance of the silicone gasket Receiving one end of chamber is sheathed in the second groove.

In the utility model optional embodiment, first groove is V-shaped slot, and first groove is along the electricity The tangential direction of arbor is arranged, and the connector includes clamping portion, and the clamping portion is connected in first groove.

In the utility model optional embodiment, the circumferential direction of the connector offers U-shaped slot, the wedging position In in the U-shaped slot, one end close to second accommodating chamber of the clamping portion is provided with and first groove cooperation Fixture block, the fixture block protrudes by the axis of inner wall towards the connector of the connector, and the fixture block is located at described the In one groove.

In the utility model optional embodiment, the part silicone gasket is located in second accommodating chamber, described One end close to the brush head of silicone gasket is protruded into first accommodating chamber, and the silicone gasket includes washer body and sets It is placed in the annular sleeve of the inside of the washer body, the washer body is sealed with the connector and the handle casing respectively Connection, the annular sleeve are located at the inside of the washer body, and one end of the annular sleeve is connect with the washer body, described Annular sleeve is axially extending along the motor shaft, and the annular sleeve is sheathed on the outside of the motor shaft, the annular sleeve and institute It states and forms cushion chamber between washer body.

In the utility model optional embodiment, one end and described second close to the brush head of the washer body Groove cooperates and is tightly connected with the motor shaft, and the inner surface of the annular sleeve offers oil storage tank, and the oil storage tank is located at One end close to the washer body of the annular sleeve, circumferential setting of the oil storage tank around the annular sleeve, the storage The shoe cream room of annular is formed between oil groove and the motor shaft.

In the utility model optional embodiment, dubbing is filled in the shoe cream room, the dubbing applies It smears in the outside of the motor shaft.

In the utility model optional embodiment, one end close to the Handleset of the connector is provided with the One sealing surface, the primary sealing area are located at the inner surface of the connector, and the silicone gasket is connect with the connector One end be provided with secondary sealing area, the primary sealing area, which is connected to the secondary sealing area and seals with secondary sealing area, to be connected It connects.

In the utility model optional embodiment, the outer surface of the silicone gasket is provided at least one circle seal line, The seal line is circumferentially distributed along the silicone gasket, and the silicone gasket is close by the seal line with the handle casing Envelope connection.

The embodiments of the present invention additionally provide a kind of electric toothbrush, including above-mentioned electric toothbrush motor shaft waterproof knot Structure.

Compared with prior art, the utility model has the following beneficial effects:

The electric toothbrush motor shaft waterproof construction, can be at significantly more efficient solution motor shaft and the cooperation of handle shell Waterproof problem, assembly is simple, structural member is few, at low cost, reduces the vibrating noise of motor shaft and brush head, improves electric toothbrush The service life of product.

The electric toothbrush, motor shaft good water-proof effect, low noise improve service life, meet the needs of user.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the schematic diagram for the electric toothbrush motor shaft waterproof construction that the utility model first embodiment provides；

Fig. 2 is the cross-sectional view in the direction A-A of Fig. 1；

Fig. 3 is enlarged diagram at the B of Fig. 2；

Fig. 4 is the structural schematic diagram of the motor shaft of Fig. 2；

Fig. 5 is the structural schematic diagram of the connector of Fig. 2；

Fig. 6 is the cross-sectional view in the direction C-C of Fig. 5；

Fig. 7 is the structural schematic diagram of the silicone gasket of Fig. 2；

Fig. 8 is the cross-sectional view in the direction D-D of Fig. 7.

Icon: 100- electric toothbrush motor shaft waterproof construction；1- brush head assembly；11- brush head；12- connector；121- clamping Portion；122- fixture block；123-U font groove；124- primary sealing area；13- bristle；The first accommodating chamber of 14-；2- Handleset；21- hand Handle shell；22- brushless motor；The second accommodating chamber of 23-；24- motor shaft；The first groove of 241-；The second groove of 242-；3- silicagel pad Circle；31- washer body；311- first connecting portion；312- secondary sealing area；32- annular sleeve；321- oil storage tank；322- second connects Socket part；323- shoe cream room；33- cushion chamber；34- seal line.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.This Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in utility model.

First embodiment

Fig. 1 is please referred to, the present embodiment provides a kind of electric toothbrush motor shaft waterproof constructions 100, including brush head assembly 1 and hand Handle component 2.

In the present embodiment, brush head assembly 1 includes brush head 11 and connector 12, and brush head 11 is connected with bristle 13, is used for tooth The cleaning of tooth；The inside of brush head 11 offers the first accommodating chamber 14 open at one end, and connector 12 is located in the first accommodating chamber 14, And it is resisted against on the inner wall of brush head 11, connector 12 is located at the open end of the first accommodating chamber 14；Handleset 2 includes outside handle Shell 21 and brushless motor 22, handle casing 21 include the second accommodating chamber 23, and handle casing 21 connect to form toothbrush sheet with brush head 11 Body, brushless motor 22 are installed in the second accommodating chamber 23, and the motor shaft 24 of brushless motor 22 is located at the second accommodating chamber 23 and first In accommodating chamber 14, connector 12 is sheathed on the outside of motor shaft 24 and is clamped with motor shaft 24, plays brush head 11 and motor shaft 24 Connecting bridge beam action, handle casing 21 and brush head 11 connect by silicone gasket 3, and silicone gasket 3 is sheathed on motor shaft 24 Outside and be tightly connected with motor shaft 24, waterproof action played to motor shaft 24, connector 12 is sheathed on the outer of silicone gasket 3 Portion is simultaneously tightly connected with silicone gasket 3, forms waterproof layer.The electric toothbrush motor shaft waterproof construction 100, significantly more efficient can solve Certainly motor shaft 24 and the waterproof problem at 21 cooperation of handle shell, assembly is simple, structural member is few, at low cost, reduces electricity The vibrating noise of arbor 24 and brush head 11 improves the service life of electric toothbrush product.

Specific structure to all parts of the electric toothbrush motor shaft waterproof construction 100 and mutual position below Relationship is described in detail.

In the present embodiment, brush head assembly 1 includes brush head 11 and connector 12, and Handleset 2 includes 21 He of handle casing Brushless motor 22, brush head assembly 1 and Handleset 2 are assembled to form the toothbrush body of electric toothbrush.

As shown in Figures 2 and 3, brush head assembly 1 includes brush head 11 and connector 12, and brush head 11 is used for fixed bristles 13, just The cleaning of tooth is carried out in user；The inside of brush head 11 offers the first accommodating chamber 14 open at one end, the first accommodating chamber 14 Positioned at one end of the separate bristle 13 of brush head 11, for accommodating the motor shaft 24 of brushless motor 22；Connector 12 is located at first and holds It receives in chamber 14, and is resisted against on the inner wall of brush head 11, connector 12 is located at the open end of the first accommodating chamber 14, is convenient for and motor Axis 24 connects.Handleset 2 includes handle casing 21 and brushless motor 22, and handle casing 21 is corresponding with brush head 11；Handle casing 21 include the second accommodating chamber 23, and brushless motor 22 is installed in the second accommodating chamber 23, and the motor shaft 24 of brushless motor 22 is located at the It in two accommodating chambers 23 and the first accommodating chamber 14, is equivalent to motor shaft 24 and is protruded into the first accommodating chamber 14 by the second accommodating chamber 23, even Fitting 12 is sheathed on the outside of motor shaft 24, and is clamped with motor shaft 24, and the swing of motor shaft 24 is able to drive the swing of brush head 11； Handle casing 21 is connect with brush head 11 by silicone gasket 3, and silicone gasket 3 is sheathed on the outside of motor shaft 24, and and motor shaft 24 are tightly connected, and silicone gasket 3 also acts as the function of noise reduction for preventing water from entering motor shaft 24；Connector 12 is arranged It is tightly connected in the outside of silicone gasket 3, and with silicone gasket 3, forms sealant, prevent water from entering in the second accommodating chamber 23.

As shown in figure 4, motor shaft 24 offers the first groove 241 and the second groove 242, the first groove 241 is located at first In accommodating chamber 14, connector 12 is connected in the first groove 241, the setting of the first groove 241, so that connector 12 and motor shaft 24 are connected firmly, and play the role of limit；Second groove 242 is located at the junction of the first accommodating chamber 14 and the second accommodating chamber 23, Second groove, 242 wound motor axis 24 it is circumferentially distributed, the second groove 242 by motor shaft 24 outer surface along motor shaft 24 diameter To extension, one end close to the first accommodating chamber 14 of silicone gasket 3 is sheathed in the second groove 242, and the second groove 242 is set It sets, is both convenient for the positioning of silicone gasket 3 and motor shaft 24, prevents silicone gasket 3 along the axial movement of motor shaft 24, meanwhile, increase The connection sealing for adding silicone gasket 3 Yu motor shaft 24 prevents water from the junction flow direction motor of silicone gasket 3 and motor shaft 24 The inside of axis 24, plays the role of waterproof layer.

Specifically, the first groove 241 is V-shaped slot, and the first groove 241 is arranged along the tangential direction of motor shaft 24, first Groove 241 is opened in the surface of motor shaft 24, and connector 12 includes clamping portion 121, clamping portion 121 be located at connector 12 with the The corresponding position of one groove 241, clamping portion 121 are connected in the first groove 241, and clamping portion 121 and the first groove 241 are clamped, So that connector 12 is connected firmly with motor shaft 24, the mobile effect of limitation shackle member is played.

Further, as shown in Figure 5 and Figure 6, the circumferential direction of connector 12 offers U-shaped slot 123, and clamping portion 121 is located at U In font groove 123, one end close to the second accommodating chamber 23 of clamping portion 121 is provided with the fixture block with the cooperation of the first groove 241 122, fixture block 122 is protruded by the axis of inner wall towards the connector 12 of connector 12, and fixture block 122 is located in the first groove 241.U The design of font groove 123 enables clamping portion 121 to deform so that fixture block 122 is connected in the first groove 241 or fixture block 122 remove out of first groove 241.In the present embodiment, connector 12 has certain elasticity, when connector 12 and motor shaft When 24 assembly, clamping portion 121 is deformed, and enters fixture block 122 in first groove 241, to play the role of limit；Work as connector 12 with motor shaft 24 when separating, and only firmly need to pull motor shaft 24 separates fixture block 122 with the first groove 241.

In the present embodiment, as shown in figure 3, part silicone gel washer 3 is located in the second accommodating chamber 23, silicone gasket 3 is leaned on One end of nearly brush head 11 is protruded into the first accommodating chamber 14.As shown in Figure 7 and Figure 8, silicone gasket 3 includes washer body 31 and setting Annular sleeve 32 in the inside of washer body 31, washer body 31 are tightly connected with connector 12 and handle casing 21 respectively, pad One end of circle ontology 31 is connect with connector 12, and the other end of washer body 31 is connect with handle casing 21, thus closing second Accommodating chamber 23 close to brush head 11 entrance so that water can not enter in the second accommodating chamber 23 from the junction of brush head 11 and handle. Washer body 31 has accommodation space, and annular sleeve 32 is located at the inside of washer body 31, one end of annular sleeve 32 and washer body 31 connections, and annular sleeve 32 extends along the axial direction (length direction) of motor shaft 24, and annular sleeve 32 is sheathed on the outer of motor shaft 24 Portion and with motor shaft 24 be tightly connected, between annular sleeve 32 and washer body 31 formed cushion chamber 33.

Silicone gasket 3 and the connection of motor shaft 24 and the connection of silicone gasket 3 and handle casing 21 form two layers and prevent Water layer is easy to implement the water-proof function of motor shaft 24.

Further, in order to improve the waterproof effect of silicone gasket 3, the outer surface of silicone gasket 3 is provided at least one circle Seal line 34, seal line 34 is circumferentially distributed along silicone gasket 3, and silicone gasket 3 is sealed with handle casing 21 by seal line 34 Connection.In the present embodiment, seal line 34 is provided with a circle, convenient for the sealed connection of silicone gasket 3 and handle casing 21.

Washer body 31 is pyramidal structure, and the diameter small end of washer body 31 (for ease of description, is defined as the first company Socket part 311) it is connect with motor shaft 24, annular sleeve 32 is connect with the diameter small end (first connecting portion 311) of washer body 31, from And annular sleeve 32 and being relatively large in diameter between end for washer body 31 is made to form gap, which is cushion chamber 33.First connection When portion 311 and annular sleeve 32 follow motor shaft 24 to swing, annular sleeve 32 can be swung relative to handle casing 21, to squeeze Cushion chamber 33 has certain elasticity since the material of silicone gasket 3 is silica gel, and silicone gasket 3 also acts as the work for reducing noise With.

One end (first connecting portion 311) of the close brush head 11 of washer body 31 and the second groove 242 cooperate, the first connection The inner surface in portion 311 is located in the second groove 242, and first connecting portion 311 and motor shaft 24 are tightly connected, and forms sealing waterproof Layer.

For the ease of the demand of different product, as the optional way of the present embodiment, the inner surface of annular sleeve 32 is offered Oil storage tank 321, oil storage tank 321 are located at one end of the close washer body 31 (first connecting portion 311) of annular sleeve 32, oil storage tank 321 are arranged around the circumferential of annular sleeve 32, and the shoe cream room 323 of annular, the first connection are formed between oil storage tank 321 and motor shaft 24 (part of the removing oil storage tank 321 of annular sleeve 32 is defined as second connecting portion 322, such as Fig. 8 institute for portion 311 and part-toroidal set 32 Show) contacts and be tightly connected with motor shaft 24, so that sealing waterproof between silicone gasket 3 and motor shaft 24.In shoe cream room 323 Filled with dubbing, dubbing is applied to the outside of motor shaft 24, meets the waterproof demand of different product.

In the present embodiment, one end of the close Handleset 2 of connector 12 is provided with primary sealing area 124, and first is close Cover 124 is located at the inner surface of connector 12, and the one end (first connecting portion 311) of silicone gasket 3 connecting with connector 12 is set It is equipped with secondary sealing area 312, primary sealing area 124 is connected to secondary sealing area 312 and is tightly connected with secondary sealing area 312. In order to guarantee to guarantee the bonding strength of connector 12 and silicone gasket 3, primary sealing area 124 and secondary sealing area 312 are closely matched It closes.As the optional way of the present embodiment, first connecting portion 311 is pyramidal structure, the diameter small end of first connecting portion 311 with Primary sealing area 124 connects, convenient for the cooperation of connector 12 and first connecting portion 311, so that connector 12 and silicone gasket 3 Junction forms sealing waterproof layer.

The working principle of the utility model embodiment are as follows:

Handleset 2 and brush head assembly 1 are connected by silicone gasket 3, silicone gasket 3 is sheathed on the outer of motor shaft 24 Portion, and connecting with handle casing 21, silicone gasket 3 and motor shaft 24, which are tightly connected, forms first of waterproof layer, silicone gasket 3 with The sealed connection of handle casing 21 forms second waterproof layer；Connector 12 is sheathed on the outside of motor shaft 24, and connector 12 Inner surface and silicone gasket 3 outer surface be tightly connected, formed third road waterproof layer.The setting of three waterproof layers, enhances The waterproof effect of motor shaft 24, assembly is simple, structure reduces, is at low cost, meanwhile, silicone gasket 3 also acts reduction motor shaft 24 with the vibrating noise of brush head 11, improve the service life of electric toothbrush product.

Second embodiment

A kind of electric toothbrush is present embodiments provided, the electric toothbrush motor shaft waterproof construction provided including first embodiment 100。

In the present embodiment, the electric toothbrush uses electric toothbrush motor shaft waterproof construction 100, and motor shaft 24 obtains Effectively waterproofing protection, meanwhile, it noise when toothbrush workpiece is reduced, provides comfortable usage experience for user, improve The service life of toothbrush, meets the use demand of user.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention can be tied mutually It closes.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of electric toothbrush motor shaft waterproof construction, which is characterized in that including brush head assembly and Handleset, the brush head group Part includes brush head and connector, and the inside of the brush head offers the first accommodating chamber open at one end, and the connector is located at institute It states in the first accommodating chamber and is resisted against on the inner wall of the brush head, the connector is located at the open end of first accommodating chamber, The Handleset includes handle casing and brushless motor, and the handle casing includes the second accommodating chamber, the brushless motor peace Loaded in second accommodating chamber, the motor shaft of the brushless motor is located in second receiving and first accommodating chamber, The connector is sheathed on the outside of the motor shaft and is clamped with the motor shaft, and the handle casing passes through with the brush head Silicone gasket connection, the silicone gasket are sheathed on the outside of the motor shaft and are tightly connected with the motor shaft, the company Fitting is sheathed on the outside of the silicone gasket and is tightly connected with the silicone gasket.

2. electric toothbrush motor shaft waterproof construction according to claim 1, which is characterized in that the motor shaft offers One groove and the second groove, first groove are located in first accommodating chamber, and it is recessed that the connector is connected in described first In slot, second groove is located at the junction of first accommodating chamber and the second accommodating chamber, and second groove is around described Motor shaft it is circumferentially distributed, second groove by the motor shaft outer surface radially extending along the motor shaft, it is described One end close to first accommodating chamber of silicone gasket is sheathed in the second groove.

3. electric toothbrush motor shaft waterproof construction according to claim 2, which is characterized in that first groove is V word Shape slot, first groove are arranged along the tangential direction of the motor shaft, and the connector includes clamping portion, the clamping portion card It is connected in first groove.

4. electric toothbrush motor shaft waterproof construction according to claim 3, which is characterized in that the circumferential direction of the connector is opened Equipped with U-shaped slot, the wedging position is in the U-shaped slot, one end close to second accommodating chamber of the clamping portion Be provided with first groove cooperation fixture block, the fixture block by the connector inner wall towards the connector axis Protrusion, the fixture block are located in first groove.

5. electric toothbrush motor shaft waterproof construction according to claim 2, which is characterized in that the part silicone gasket position In in second accommodating chamber, one end close to the brush head of the silicone gasket is protruded into first accommodating chamber, described Silicone gasket include washer body and be set to the washer body inside annular sleeve, the washer body respectively with it is described Connector and the handle casing are tightly connected, and the annular sleeve is located at the inside of the washer body, and the one of the annular sleeve End is connect with the washer body, and the annular sleeve is axially extending along the motor shaft, and the annular sleeve is sheathed on the electricity The outside of arbor forms cushion chamber between the annular sleeve and the washer body.

6. electric toothbrush motor shaft waterproof construction according to claim 5, which is characterized in that the washer body it is close One end of the brush head and second groove cooperate and are tightly connected with the motor shaft, and the inner surface of the annular sleeve opens up There is oil storage tank, the oil storage tank is located at one end close to the washer body of the annular sleeve, and the oil storage tank is around described The circumferential setting of annular sleeve, forms the shoe cream room of annular between the oil storage tank and the motor shaft.

7. electric toothbrush motor shaft waterproof construction according to claim 6, which is characterized in that be filled in the shoe cream room Dubbing, the dubbing are applied to the outside of the motor shaft.

8. electric toothbrush motor shaft waterproof construction according to claim 1, which is characterized in that the close institute of the connector The one end for stating Handleset is provided with primary sealing area, and the primary sealing area is located at the inner surface of the connector, the silicon The one end of rubber gasket connecting with the connector is provided with secondary sealing area, and it is close that the primary sealing area is connected to described second Cover is simultaneously tightly connected with secondary sealing area.

9. electric toothbrush motor shaft waterproof construction according to claim 1, which is characterized in that the appearance of the silicone gasket Face be provided at least one circle seal line, the seal line is circumferentially distributed along the silicone gasket, the silicone gasket with it is described Handle casing is tightly connected by the seal line.

10. a kind of electric toothbrush, which is characterized in that anti-including electric toothbrush motor shaft described in any one of claim 1-9 Water-bound.