CN211067133U

CN211067133U - Electric toothbrush waterproof construction

Info

Publication number: CN211067133U
Application number: CN201921769913.4U
Authority: CN
Inventors: 罗宁
Original assignee: Cixi Saijia Electronics Co ltd
Current assignee: Cixi Saijia Electronics Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-24
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses an electric toothbrush waterproof structure, which comprises a body, one end of the body is provided with a first opening, a bottom cover is arranged in the first opening, one end of the bottom cover, which is far away from the first opening, is provided with a second opening, an accessory is inserted on the bottom cover, a USB charging plate is inserted in the accessory, a sealant is arranged in the second opening, the USB charging plate and the accessory are positioned in an area enclosed by the sealant and an inner cavity of the bottom cover, one end of the accessory, which is far away from the first opening, is provided with a ventilation part, one end of the ventilation part passes through the sealant and is provided with a waterproof breathable film, the waterproof breathable film is communicated with the inner cavity of the bottom cover, and an O-shaped ring; its advantage has guaranteed its gas permeability for having carried out waterproof when to electric toothbrush charging side.

Description

Electric toothbrush waterproof construction

Technical Field

The utility model relates to an electric toothbrush field especially relates to an electric toothbrush waterproof construction.

Background

Electric toothbrushes are widely used for reasons of convenience and high cleanliness. The electric toothbrush is internally provided with components such as a battery and a motor, the electric toothbrush can be fully contacted with water in the using process, if the water enters the inside of the electric toothbrush, a short circuit phenomenon can occur, so that the circuit of the electric toothbrush is damaged, and even the battery is overheated and exploded, and a waterproof structure needs to be added in the electric toothbrush.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an electric toothbrush waterproof construction that can prevent to advance water from charging end is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an electric toothbrush waterproof construction, includes the body, the one end of body is provided with first opening, be provided with the bottom in the first opening, the one end that first opening was kept away from to the bottom is provided with the second opening, it is equipped with the accessory to insert on the bottom, it is equipped with the USB charging panel to insert in the accessory, be provided with sealed glue in the second opening, USB charging panel and accessory are located sealed regional of enclosing with the bottom, the accessory is kept away from first open-ended one end and is provided with ventilative portion, the one end of ventilative portion is passed sealed glue and is provided with waterproof ventilated membrane, be provided with O type circle between bottom and the body. The waterproof performance inside the bottom cover and between the bottom cover and the toothbrush body is realized through the O-shaped ring and the sealant.

In a further improvement, one end of the bottom cover, which is close to the first opening, is connected with a USB cover plate to protect the charging port on the bottom cover.

In a further improvement, the USB cover plate is fixedly connected with a cover plate rubber coating, and the cover plate rubber coating is connected with the bottom cover to play a role in preventing dust and toothpaste foam.

In a further improvement, a limiting rod is arranged on the cover plate rubber coating, one end of the limiting rod extends into the bottom cover, a limiting protrusion is arranged on the limiting rod, and the limiting protrusion is located in the bottom cover.

Compared with the prior art, the utility model has the advantages that the inside and the outside of the toothbrush body are separated by the O-shaped ring and the sealant to prevent water from entering the toothbrush from one side of the bottom cover with the charging port; the waterproof breathable film on the accessory is used for discharging gas generated in the lithium battery charging process; the USB cover plate and the cover plate rubber coating are used for preventing dust and toothpaste foam and discharging gas generated by charging.

Drawings

Fig. 1 is an exploded view of the present invention.

Figure 2 is the utility model discloses a bottom, accessory, waterproof ventilated membrane, USB apron and apron rubber coating after-assembly sketch map.

Fig. 3 is the connection relationship between the bottom cover, the fitting, the waterproof breathable film, the USB cover plate and the body after the cover plate is encapsulated.

Fig. 4 is an assembly diagram of the accessory and the USB charging pad of the present invention.

Fig. 5 is an assembly diagram of the bottom cover, the USB cover plate and the cover plate rubber of the present invention.

Fig. 6 is a sectional view of the assembled parts of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Fig. 1 is a waterproof structure of an electric toothbrush, which comprises a body 1, wherein the body 1 is hollow and used for placing a relevant charging component and an electric motor.

One side of a handle of the electric toothbrush is cylindrical, a first opening 11 is formed in one end, close to the handle, of the body 1, and a bottom cover 5 is arranged in the first opening 11. The bottom cover 5 is cylindrical, a sealing cover is arranged at one end facing the outside, and a USB charging hole is formed in the sealing cover, so that the USB charging end can be inserted into the bottom cover 5 and connected with an internal charging structure.

The outer side surface of the bottom cover 5 is provided with two annular bulges, the groove surrounded by the annular bulges is internally provided with an O-shaped ring 6, when the bottom cover 5 is installed in the toothbrush body 1, the O-shaped ring 6 is deformed to fill a gap between the side surface of the bottom cover 5 and the toothbrush body 1, and water is prevented from entering the toothbrush body 1 from a gap between the outer side surface of the bottom cover 5 and the toothbrush body 1.

There are two fixed inserted sheets 52 of radial setting on the bottom 5, the one end of fixed inserted sheet 52 is located bottom 5, and the other end is located bottom 5 outside and is provided with the fixed slot. The toothbrush body 1 is provided with a protrusion at a position corresponding to the fixing groove. When the bottom cover 5 is placed in the body 1 for fixing, the protrusion extends into the fixing groove.

The end of the bottom cover 5 away from the first opening 11 is provided with a second opening 51, the second opening 51 is provided with a fitting 3, and the specific structure of the fitting 3 is shown in fig. 2 and 4. The fitting 3 is cylindrical as a whole, and a first groove 31 and a second groove 32 which are isolated from each other are arranged at one end of the fitting 3 close to the bottom cover 5. The side of the accessory 3 is provided with a limiting groove, a limiting strip is arranged at a position corresponding to the limiting groove in the bottom cover 5, and the limiting groove and the limiting strip are matched with each other so that the accessory 3 cannot rotate when being installed inside the bottom cover 5.

The accessory 3 is far away from the one end of bottom 5 and is provided with cylindric ventilative portion 33 corresponding to the position department of second groove 32, the tip of ventilative portion 33 is provided with bleeder vent 36, bleeder vent 36 communicates with each other with second groove 32, the tip of ventilative portion 33 is through the mode fixedly connected with waterproof ventilated membrane 2 of hot pressing or attaching glue. The waterproof breathable film 2 is used for discharging gas generated during charging of the internal lithium battery and preventing external liquid from entering the body 1.

The working principle of the waterproof breathable film 2 is as follows: under the state of water vapor, water particles are very fine, and can smoothly permeate into the capillary to the other side according to the principle of capillary motion, so that the vapor permeation phenomenon is generated. After the water vapor is condensed into water drops, the particles become bigger, and water molecules can not smoothly separate from the water drops to permeate to the other side under the action of the surface tension of the water drops, so that the permeation of water is prevented, and the vapor permeable membrane has a waterproof function.

The waterproof breathable film 2 mainly comprises three layers: PP spunbonded nonwoven, PE macromolecule breathable film and PP spunbonded nonwoven. The spun-bonded non-woven fabric mainly has the effects of enhancing tensile force and hydrostatic pressure and protecting the middle layer, namely the breathable film, and the middle layer PE high-molecular breathable film is mainly used for real ventilation.

The USB charging plate 4 is fixedly connected to the inside of the first groove 31 of the accessory 3, and more specifically, mounting grooves are provided on both side walls of the first groove 31, the USB charging plate 4 is inserted into the mounting grooves, and the fixing structure of the first groove 31 and the USB charging plate 4 is shown in fig. 4. The opening of the accessory 3 faces the bottom cover 5, so that when the accessory 3 is placed in the bottom cover 5, the inner bottom plate of the bottom cover 5 closes the first groove 31, thereby fixing the USB charging pad 4 in the first groove 31 of the accessory 3. And a charging port is arranged on the USB charging plate 4. The utility model discloses a USB charges the mouth and adopts micro USB's interface, can be compatible with the cell-phone charger mutually. The bottom of the first groove 31 of the accessory 3 is provided with a wire hole 34, and an electric wire 35 on the USB charging board 4 extends into the body 1 through the wire hole 34 and is connected with the battery.

The second opening 51, one end of the fitting 3 far away from the first opening 11 and the area surrounded by the air permeable part 33 are filled with sealant, so that the inner cavity of the bottom cover 5 is isolated from the inner part of the body 1. The one end that ventilative portion 33 was provided with waterproof ventilated membrane 2 stretches out sealed glue and meets with body 1 is inside, waterproof ventilated membrane 2 communicates lithium cell one side and the inner chamber of bottom 5.

The USB charging device is characterized in that one end, facing outwards, of the bottom cover 5 is connected with a USB cover plate 8 to protect a charging port, a cover plate rubber coating 7 is arranged on the USB cover plate 8 in a secondary injection molding mode, the cover plate rubber coating 7 is made of a flexible material, and the USB cover plate 8 and the cover plate rubber coating 7 are of an integrated structure. After the cover plate rubber coating 7 and the USB cover plate 8 are installed in place, the USB cover plate 8 can be attached to the bottom cover 5 through interference fit of the cover plate rubber coating 7 and the first opening 11. The cover plate rubber coating 7 is coated on the side surface of the USB cover plate 8 to play a role in preventing dust and toothpaste foam.

The cover plate rubber coating 7 is provided with a limiting rod 72, one end of the limiting rod 72 sequentially extends into the bottom cover 5 and the first groove 31, a limiting protrusion 71 is arranged on the limiting rod 72, and the limiting protrusion 71 is located in the bottom cover 5. One end of the limiting protrusion 71 close to the USB cover plate 8 is a plane, and the other end of the limiting protrusion is provided with a narrowed guide part, so that the limiting rod 72 can be conveniently inserted into the bottom cover 5 and can be prevented from being pulled out. The stop protrusion 71 is located at the middle section of the stop rod 72 before assembly, see fig. 1 and 5; when the assembly is completed, the excess portion of the stopper rod 72 behind the stopper projection 71 is cut off by scissors, and the excess portion of the stopper rod 72 is cut off in fig. 6. The limiting protrusion 71 can prevent the cover rubber 7 and the USB cover plate 8 from being separated from the bottom cover 5 and allow the USB cover plate 8 to be separated from the bottom cover 5 by a distance, so that the USB charging port can be exposed during charging.

And gas generated by the lithium battery charging is discharged out of the body 1 through a gap between the waterproof breathable film 2, the air hole 36, the second groove 32, the limiting rod 72 and the limiting rod 72 hole of the bottom cover 5 in sequence.

Claims

1. A waterproof structure of an electric toothbrush comprises a body (1), wherein one end of the body (1) is provided with a first opening (11), a bottom cover (5) is arranged in the first opening (11), one end, far away from the first opening (11), of the bottom cover (5) is provided with a second opening (51), a fitting (3) is inserted on the bottom cover (5), a USB charging board (4) is inserted in the fitting (3), the waterproof structure is characterized in that a sealant is arranged in the second opening (51), the USB charging board (4) and the fitting (3) are located in an area enclosed by the sealant and an inner cavity of the bottom cover (5), one end, far away from the first opening (11), of the fitting (3) is provided with a ventilating part (33), one end of the ventilating part (33) penetrates through the sealant and is provided with a waterproof breathable film (2), and the inner cavity of the waterproof breathable film (2) is communicated with the inner cavity of the bottom cover (5), an O-shaped ring (6) is arranged between the bottom cover (5) and the body (1).

2. A waterproof structure of an electric toothbrush according to claim 1, wherein a USB cover (8) is attached to an end of the bottom cover (5) near the first opening (11).

3. A waterproof structure of an electric toothbrush according to claim 2, wherein a cover rubber (7) is fixedly connected to the USB cover (8), and the cover rubber (7) is connected to the bottom cover (5).

4. A waterproof structure of an electric toothbrush according to claim 3, wherein a limiting rod (72) is provided on the cover plate rubber (7), one end of the limiting rod (72) extends into the bottom cover (5), a limiting protrusion (71) is provided on the limiting rod (72), and the limiting protrusion (71) is located in the bottom cover (5).