CN201920932U - Electric toothbrush - Google Patents

Abstract

The utility model discloses an electric toothbrush, which comprises a toothbrush shell, an electric toothbrush driving device arranged in the toothbrush shell, a toothbrush head and a battery cover, wherein the electric toothbrush driving device comprises a driving device bracket, a motor, a gear transmission mechanism and a cam transmission mechanism; the gear transmission mechanism includes: a small bevel gear connected to the main shaft end of the motor, a large bevel gear engaged with the small bevel gear, a cylindrical gear A coaxially and synchronously rotating with the large bevel gear, and a middle cylindrical gear and a main cylindrical gear which are sequentially engaged and driven with the cylindrical gear A; the cam transmission mechanism includes: the eccentric wheel and the sliding groove which are arranged on two side faces of the main cylindrical gear are respectively matched with two sliding blocks of the eccentric wheel in a sliding manner, one side of each sliding block is matched with the inner wall of the driving device bracket in a sliding guide manner, and each sliding block comprises a connecting shaft which is connected to the upper end of the corresponding sliding block body, extends out of the toothbrush shell and is connected with a toothbrush head. The utility model has the advantages of energy loss is less, clean ability reinforce, efficient, easily realize and be difficult to break down.

Description

an electric toothbrush

technical field

The utility model relates to a toothbrush, in particular to an electric toothbrush.

Background technique

In a traditional electric toothbrush, the high-speed rotation of the motor is converted by a gear or cam mechanism into a reciprocating linear motion or a reciprocating rotational motion of the toothbrush head, as well as a small vibration to achieve the purpose of cleaning teeth.

In a traditional electric toothbrush, the reciprocating motion of the toothbrush head is generally driven by a single shaft to clean teeth, or a single toothbrush head that reciprocates and rotates to clean teeth. Wherein, the electric toothbrush driving part of the traditional reciprocating electric toothbrush is shown in Fig. 1 and Fig. 2 . When using these traditional electric toothbrushes, since only one toothbrush head reciprocates or vibrates slightly, the user needs to clean one side of the teeth before cleaning the other side, that is, from the outside to the inside or from the inside to the inside. External, or repeated internal and external cleaning of the teeth. This makes the time of brushing teeth longer, and some dead corners of teeth are not easy to clean; and after the motor energy is converted into small vibration and reciprocating rotation, energy loss is often large, and the efficiency is reduced. How to allow the toothbrush to clean teeth quickly and efficiently has become a difficult problem to be solved at present.

Utility model content

The technical problem to be solved by the utility model is to provide a fast, efficient and powerful electric toothbrush for the defects of the traditional electric toothbrush.

The technical scheme that the utility model solves its technical problem adopts is:

An electric toothbrush, comprising a toothbrush housing, an electric toothbrush driving device located in the toothbrush housing, a toothbrush head and a battery cover, the battery cover is connected to the lower end of the toothbrush housing, the electric toothbrush driving device includes a driving device bracket and is installed on the drive Motors, gear drives and cam drives within the device frame;

The gear transmission mechanism includes a small bevel gear connected to the main shaft end of the motor, a large bevel gear that is rotatably supported on the drive device bracket and meshed with the small bevel gear, a cylindrical gear A that rotates coaxially with the large bevel gear, and a Gear A meshes with the intermediate cylindrical gear and the main cylindrical gear in turn; one end of the intermediate cylindrical gear is rotatably supported on the drive device bracket, and the other end is rotatably supported on a connecting bridge, and the two ends of the connecting bridge are fixed on the drive device bracket. On the inner wall, both ends of the main cylindrical gear are rotatably supported on the drive device bracket;

The cam transmission mechanism includes an eccentric wheel arranged on both sides of the main cylindrical gear, and two sliding blocks respectively slidingly matched with the chute, and one side of the sliding block slides and guides with the inner wall of the drive device Matching, the slider includes a connecting shaft connected to the upper end of the slider body, extending out of the toothbrush shell and connected to a toothbrush head.

Wherein, the phases of the two eccentric wheels arranged on both sides of the main cylindrical gear are the same.

Wherein, the phase difference between the two eccentric wheels arranged on both sides of the main cylindrical gear is 180 degrees.

Wherein, the toothbrush head is composed of two symmetrical sub-toothbrush heads, and the bristles on the two sub-toothbrush heads are opposite to each other, leaving a gap in the middle.

Wherein, the gap between the bristles on the two sub-toothbrush heads is 0.1mm-0.9mm.

Wherein, the toothbrush casing is composed of an upper casing and a lower casing, and the toothbrush casing and the battery cover form a closed space.

Wherein, the small bevel gear is pressed into the rotating shaft of the motor with interference.

The beneficial effects of the utility model are:

1) In the utility model, since the motor drives the toothbrush head to do reciprocating linear motion through a simple gear transmission mechanism and a cam transmission mechanism, the energy loss is small, the toothbrush head has strong cleaning ability and high efficiency;

2) The utility model adopts a double-tooth brush head with a unique structure, which can cover the upper and lower teeth, and the inside and outside of the teeth at the same time, so the brushing time can be greatly shortened, and the efficiency is greatly improved compared with the traditional electric toothbrush;

3) The structure of the electric toothbrush driving device and the toothbrush head of the present utility model is relatively simple, easy to implement, and not prone to failure.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 and Fig. 2 are structural schematic diagrams of the driving part of the electric toothbrush of a conventional reciprocating electric toothbrush, wherein Fig. 1 is a front view, and Fig. 2 is a side view.

Figure 3 and Figure 4 are schematic diagrams of the overall structure of the electric toothbrush driving device provided by the embodiment of the present invention, wherein Figure 3 is a front view, and Figure 4 is a side view.

Fig. 5 is an exploded schematic diagram of the structure of the electric toothbrush driving device provided by the embodiment of the present invention.

Fig. 6 is a schematic diagram of the appearance of the toothbrush head of the electric toothbrush provided by the embodiment of the present invention.

Fig. 7 and Fig. 8 are schematic diagrams of the first step of bristling of the toothbrush head provided by the embodiment of the present invention.

Fig. 9 and Fig. 10 are schematic diagrams of the second step of hair planting of the toothbrush head provided by the embodiment of the present invention.

Fig. 11 and Fig. 12 are schematic diagrams of the third step of bristling of the toothbrush head provided by the embodiment of the present invention.

Fig. 13 and Fig. 14 are schematic diagrams of the fourth step of bristling of the toothbrush head provided by the embodiment of the present invention.

Fig. 15 is a schematic diagram of the positions of the two toothbrush heads of the toothbrush head provided by the embodiment of the present invention.

Fig. 16 is a schematic diagram of the method of using the electric toothbrush provided by the embodiment of the present invention.

【Description of figure number】

1 Battery cover 2 Toothbrush housing 3 Drive bracket 4 Motor

5 small bevel gear 6 large bevel gear 6′ cylindrical gear A 7 connecting shaft

8 Intermediate cylindrical gear 9 Connecting bridge 10 Main cylindrical gear 11 Slider

12 connecting shaft 13 toothbrush head

Detailed ways

Please refer to FIG. 3 , FIG. 4 and FIG. 5 , in the embodiment of the utility model, the electric toothbrush includes a battery cover 1 , a toothbrush casing 2 , an electric toothbrush driving device, and two toothbrush heads 13 . Wherein, the toothbrush housing 2 plays a sealing, waterproof and supporting role; the electric toothbrush driving device is located in the toothbrush housing 2, and extends out of the toothbrush housing 2 through two connecting shafts 12 and is connected with two toothbrush heads 13 respectively to drive two toothbrushes. The head 13 performs a reciprocating linear motion.

The electric toothbrush driving device includes a driving device bracket 3, a motor 4, a gear driving mechanism and a cam driving mechanism, wherein the driving device bracket 3 plays the role of a fixed support and a modular electric toothbrush driving part, and the motor 4, the gear driving mechanism and the cam driving mechanism The mechanism is installed in the drive device bracket 3; wherein, the gear drive mechanism includes a small bevel gear 5, a large bevel gear 6, a cylindrical gear A 6', an intermediate cylindrical gear 8 and a main cylindrical gear 10, and the cam driving mechanism includes a bevel gear located on the main cylindrical gear. 10 The eccentric wheels on both sides, the slider 11 cooperating with the eccentric wheel, and the connecting shaft 12 injected on the slider 11 are specifically:

The small bevel gear 5 is fixed on the main shaft end of the motor 4, and the small bevel gear 5 is pressed into the main shaft end of the motor 4 with interference; the large bevel gear 6 is rotatably supported on the drive device bracket 3 and meshed with the small bevel gear 5; the cylindrical gear A 6' rotates coaxially with the large bevel gear 6, and the middle cylindrical gear 8 and the main cylindrical gear 10 mesh with the cylindrical gear A 6' sequentially; On the connecting bridge 9, the two ends of the connecting bridge 9 are fixed on the inner wall of the drive device bracket 3;

The two sides of the main cylindrical gear 10 are respectively provided with an eccentric wheel, and the two sliders 11 are slidably matched with the eccentric wheel through the chute respectively; the two sliders 11 are respectively injection molded with a connecting shaft 12 with a locking position, and the two connecting shafts 12 are engaged with a toothbrush head 13 respectively, so that the toothbrush head can move up and down when the rotating shaft of the motor 4 moves. In addition, the phases of the eccentric wheels on both sides of the main spur gear 10 can be the same or 180 degrees different; the material of the connecting shaft 7 and the connecting shaft 12 is preferably stainless steel, and the material of the driving device bracket 3 is preferably plastic.

When the above-mentioned electric toothbrush is working, the rotating shaft of the motor 4 rotates at a high speed, and the rotation is transmitted to the large bevel gear 6 through the small bevel gear 5. 6', the intermediate cylindrical gear 8 transmits the rotation to the main cylindrical gear 10, and the main cylindrical gear 10 further reduces the rotational speed so that the motion of the toothbrush is converted into an acceptable working speed; These two eccentric wheels are integrated with the main cylindrical gear 10 and each cooperates with a slider 11, so when the main cylindrical gear 10 rotates, if the phases of the two eccentric wheels are the same, the two eccentric wheels will drive the corresponding slider 11 to rotate. Under the guidance of the driving device bracket 3, the synchronous forward and backward movement is realized, and finally the two toothbrush heads 13 are driven to realize periodic synchronous reciprocating linear motion; if the phase difference between the two eccentric wheels is 180 degrees, the two eccentric wheels will drive the corresponding The slider 11 realizes the asynchronous forward and backward movement one after the other under the guidance of the driving device bracket 3 , and finally drives the two toothbrush heads 13 to realize periodic opposite reciprocating linear movements.

In this embodiment, the structure of the toothbrush head 13 used is shown in Figure 6. The toothbrush head has a unique shape and structure, complex process, ergonomics, two symmetrical sub-toothbrush heads, and two sub-toothbrush heads. The toothbrush bristles face each other with a gap in between. In addition, for ease of use, toothbrush hairs of different lengths are implanted on each sub-toothbrush head. The implantation method of the toothbrush hairs is as follows: the first step, as shown in Figure 7 and Figure 8, implants the shortest toothbrush hairs; the second step, As shown in Figure 9 and Figure 10, implant the longer toothbrush hairs in the same direction; the third step, as shown in Figure 11 and Figure 12, implant the long tooth brush hairs in the other direction; the fourth step, as shown in Figure 13 and Figure 12 As shown in Figure 14, the longest toothbrush bristles are implanted. The toothbrush head has many processes, but the bristles of the toothbrush can reach various lengths and dimensions, and various angles, so that the toothbrush can be fully and effectively cleaned. In addition, preferably, as shown in FIG. 15 , a gap of about 0.1-0.9 mm is formed between the two toothbrush heads of the toothbrush head so that the teeth can cut in.

Figure 16 is a schematic diagram of the use method of the electric toothbrush in this embodiment, since the electric toothbrush has two toothbrush heads capable of reverse reciprocating linear motion, and each toothbrush head has two symmetrical sub-toothbrush heads, so when brushing teeth , can clean the inside and outside of the upper and lower teeth at the same time, not only has strong cleaning ability, but also greatly shortens the time of brushing teeth, improves the efficiency, and improves the utilization rate of motor energy.

The above embodiments are only used to illustrate the technical solutions of the present utility model without limitation, and the present utility model is described in detail with reference to preferred embodiments. Those skilled in the art should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the utility model, and all should be covered by the claims of the utility model.

Claims (7)

1. electric toothbrush, comprise the toothbrush shell, be located at driving device for electric toothbrush, head toothbrushes and battery cover in the toothbrush shell, this battery cover is connected this toothbrush shell lower end, it is characterized in that described driving device for electric toothbrush comprises the driving device support and is installed on driving device support interior motor, gear drive and cam drive;

Described gear drive comprise the cone pinion that is connected in the motor spindle end, rotational support on the driving device support and with the large bevel gear of cone pinion engagement, with the roller gear A of the coaxial synchronous rotation of this large bevel gear and with intermediate cylindrical gear and the main roller gear of roller gear A engaged transmission successively; Described intermediate cylindrical gear one end rotational support on the driving device support, other end rotational support is on a cross structure, the two ends of this cross structure are fixed on the inwall of driving device support, and described main roller gear two ends rotational support is on described driving device support;

Described cam drive comprises two slide blocks that the eccentric of being located at main roller gear two sides, chute are slidingly matched with described eccentric respectively, one side of described slide block cooperates with the inwall slide-and-guide of described driving device support, and described slide block comprises the connecting axle that is connected the slide body upper end, stretches out the toothbrush shell and be connected with a head toothbrushes.

2. electric toothbrush as claimed in claim 1 is characterized in that, described two eccentric phase places being located at main roller gear two sides are identical.

3. electric toothbrush as claimed in claim 1 is characterized in that, described two eccentric phase contrasts being located at main roller gear two sides are 180 degree.

4. as the arbitrary described electric toothbrush of claim 1 to 3, it is characterized in that described head toothbrushes is made up of symmetric two sub-head toothbrushes, and the bristles on two sub-head toothbrushes is relative, the slit is left in the centre.

5. electric toothbrush as claimed in claim 4 is characterized in that, the intermediary slit of bristles on described two sub-head toothbrushes is 0.1mm-0.9mm.

6. electric toothbrush as claimed in claim 1 is characterized in that, described toothbrush shell is made up of upper casing and lower casing, and this toothbrush shell and described battery cover form an enclosed space.

7. electric toothbrush as claimed in claim 1 is characterized in that, described cone pinion interference is pressed on the turning cylinder of motor.

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