Electric toothbrush with circular shaft

Abstract

The utility model relates to a circular shaft electric toothbrush, which comprises two parallel brush shafts, a brush neck, a motor and a rechargeable battery, bristles are arranged at one end of each brush shaft, the whole section of each brush shaft is a circular shaft, the other end of each brush shaft is arranged in the brush neck and is in transmission connection with the motor in a gear transmission mode, the motor is arranged in a motor bin, and the motor bin and the brush neck are connected into a whole in a threaded mode. The brush neck is a cavity body, two sides of the brush neck are respectively provided with a partition plate, a cavity is enclosed by the partition plate and the neck wall, the two partition plates are provided with shaft holes for the brush shaft to pass through, the rear end of the brush neck is provided with a transmission bin for installing a transmission gear, and the front end of the brush neck can be provided with a side cover to half surround the bristles. The end cover is arranged at the end opening of the side cover, the brush shaft enters an end cover hole, and the side cover is provided with a dirt discharge hole to prevent dirt from being gathered on the side cover. The novel electric torch is more reasonable in structure, convenient to use, easy to manufacture and assemble, capable of being charged, economical and practical.

Description

Technical Field

[0001] The utility model relates to a daily life appliance, in particular to a round-shaft electric toothbrush. Background Art

[0002] The utility model patent previously applied by the applicant is a dual-axis electric toothbrush, with announcement number CN2633242Y. The technical solution disclosed in the patent includes a brush head, a brush neck, a transmission device, a micro motor, a switch, and a handle. The brush head has two parallel upper and lower brush shafts with bristles fixed on the shafts. The front end of the brush shaft is connected to a brush head end cover, and the rear end of the brush shaft passes through the brush neck and is connected to the transmission device, which is in turn connected to the micro motor. The part of the brush shaft that fixes the bristles is a square shaft.

[0003] The electric toothbrush was a good design at the time, but now it seems that there are still some shortcomings. Specifically, the front section of the brush shaft is a square shaft, and the space of the brush head is limited. The round shaft occupies less space than the square shaft. In addition, the electric toothbrush is not easy to assemble. Its structure only considers its integrity, and does not consider the convenience of specific production and assembly from a structural perspective, which makes it difficult to implement. Therefore, it is necessary to improve its structure. Summary of the invention

[0004] Therefore, the utility model provides a round-shaft electric toothbrush, which has a more reasonable structure, is convenient to use, easy to manufacture and assemble, and can be charged, thereby overcoming the shortcomings of the prior art.

[0005] The utility model provides a round-shaft electric toothbrush, which has two parallel brush shafts, a brush neck, a motor and a rechargeable battery. The utility model is characterized in that bristles are arranged on one end of the brush shaft, the entire brush shaft is a round shaft, the other end is arranged in the brush neck and is connected to the motor through a gear transmission, the motor is arranged in the motor compartment, the motor compartment and the brush neck are connected as a whole through a threaded manner, the motor compartment and the battery compartment are connected through a threaded manner, the motor and the battery are electrically connected, and a switch is arranged on the electrical circuit.

[0006] The brush neck is a hollow body, with a partition on each of its two sides forming a cavity with the neck wall, shaft holes are provided on the two partitions for the brush shaft to pass through, and a transmission compartment is provided at the rear end of the brush neck for installing a transmission gear.

[0007] A shaft sealing ring is arranged on the brush shaft at the front end partition of the brush neck to prevent water from entering the inner cavity of the brush neck.

[0008] A side cover is arranged at the front end of the brush neck to half surround the bristles, an end cover is arranged at the end of the side cover, and the brush shaft enters into the end cover hole.

[0009] A drainage hole is provided on the side cover to prevent dirt from accumulating on the side cover.

[0010] A partition is provided at one end of the motor bin connected to the brush neck. The partition is provided with a motor shaft hole and an annular groove for two brush shafts to extend into, so as to prevent the brush shafts from moving axially.

[0011] The gear transmission is composed of a connected gear on the upper brush shaft and a driven gear and a motor gear on the lower shaft that are meshed and driven with the connected gear.

[0012] The battery compartment is connected to the motor compartment at one end with a partition to support the motor, the outer wall of the battery compartment is provided with a manual switch, the rear end of the battery compartment is provided with a threaded battery compartment cover, the battery compartment cover is provided with a charging socket, and the charging socket is provided with a charging cover outside the charging socket to protect the socket.

[0013] Waterproof rubber sealing rings are provided at the threaded connections between the brush neck and the motor compartment, between the motor compartment and the battery compartment, between the motor compartment and the battery compartment cover, and between the battery compartment cover and the charging cover.

[0014] The electric toothbrush with side cover has a sewage outlet on the side cover, so the washing waste can be discharged in time and will not accumulate.

[0015] The utility model adopts segmented combination, each component can be manufactured separately, the assembly is convenient, the sealing is good, the electrical parts are not easily affected by moisture, so the service life is long and the device is convenient to carry on the journey.

[0016] In short, the utility model has the characteristics of more reasonable structure, convenient use, easy manufacture and assembly, and can be charged at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view (AA section view) of the present utility model.

[0018] Figure 2 It is a top view of the utility model.

[0019] Figure 3 This is a BB cross-section diagram.

[0020] Figure 4 This is the front view of the brush neck (CC section view).

[0021] Figure 5 yes Figure 4 Left view.

[0022] Figure 6 yes Figure 4 Top view.

[0023] Figure 7 yes Figure 4 DD cross-section diagram.

[0024] Figure 8 This is the main view of the motor compartment (front section view).

[0025] Fig. 9 yes Figure 8 Left view.

[0026] Figure 1-9 The numbers of the components are as follows:

[0027] 1-end cover; 2-plug; 3-side cover; 4-brush shaft; 5-brush bristles; 6-shaft sealing ring; 7-brush neck; 8-hoop; 9-conjoined gear; 10-driven gear; 11-motor gear; 12-motor compartment; 13-battery compartment; 14-switch; 15-battery compartment cover; 16-charging socket; 17-charging cover; 18-metal contact; 19-motor; 20-sealing ring; 21-drain hole; 701-brush shaft hole; 702-transmission compartment thread; 703-transmission compartment; 1201-motor compartment internal thread; 1202-motor shaft hole; 1203-motor compartment external thread; 1204-brush shaft ring groove.

[0028] Among them, the sealing ring marked with number 20 refers to the sealing rings of all threaded connections. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] like Figure 1-9 As shown, the end cover 1, the side cover 3, the brush neck 7, the motor compartment 12, the battery compartment 13, the battery compartment cover 15 and the charging cover 17 are all made of plastic or metal materials, the side cover and the brush neck are made into one piece, and a slot is set at the port to fix the end cover. The remaining components are connected by threads, and the connection is sealed with a sealing ring 20 to prevent water leakage.

[0031] The brush shaft 4 includes an upper brush shaft and a lower brush shaft, both of which are installed through the brush shaft hole 701 of the brush neck, the right end of the shaft extends into the transmission compartment 703, and the end extends into the brush shaft ring groove 1204 on the motor compartment partition, and the conjoined gear 9 is a combination of a large gear and a small gear. The small gear is meshed with the motor gear 11 for transmission, and the large gear is meshed with the driven gear 10 for transmission to ensure that the two brush shafts rotate in opposite directions at the same speed.

[0032] The motor 19 is a micro motor, which is fixed in the motor compartment.

[0033] A rechargeable battery is installed in the battery compartment, and the positive and negative electrodes of the battery are connected to the motor to form an electric circuit, and a switch 14 and a charging socket 16 and supporting components are installed on the electric circuit. The socket is sealed with a charging cover 17, which is usually covered and opened during charging.

[0034] To facilitate connection, as part of the electrical circuit, a metal contact 18 is installed on the inner wall of the battery compartment to elastically contact the metal contact of the battery compartment cover. The circuit connection part is arranged according to the usual circuit connection, which will not be repeated here.

[0035] The products of this project are divided into two types: standard type and children's type.

[0036] The rest are as above. The parts and their part numbers not mentioned are as above.

Claims

1. A round-shaft electric toothbrush having two parallel brush shafts, a brush neck, a motor and a rechargeable battery, characterized in that One end of the brush shaft is equipped with bristles, the entire brush shaft is a round shaft, and the other end is installed in the brush neck and connected to the motor through gear transmission. The motor is installed in the motor compartment, the motor compartment and the brush neck are connected as a whole through a threaded manner, the motor compartment and the battery compartment are connected through a threaded manner, there is an electrical connection between the motor and the battery, and a switch is installed on the electrical circuit.

2. The round-shaft electric toothbrush according to claim 1, characterized in that The brush neck is a hollow body, with a partition on each side forming a cavity with the neck wall, and shaft holes are provided on the two partitions for the brush shaft to pass through, and a transmission compartment is provided at the rear end of the brush neck for installing a transmission gear.

3. The round-shaft electric toothbrush according to claim 1, characterized in that There is a shaft sealing ring on the brush shaft at the front end partition of the brush neck to prevent water from entering the inner cavity of the brush neck.

4. The round-shaft electric toothbrush according to claim 1, characterized in that A side cover is arranged at the front end of the brush neck to half surround the bristles, an end cover is arranged at the end of the side cover, and the brush shaft enters into the end cover hole.

5. The round-shaft electric toothbrush according to claim 4, characterized in that A drainage hole is provided on the side cover to prevent dirt from accumulating on the side cover.

6. The round-shaft electric toothbrush according to claim 1, characterized in that A partition is provided at one end of the motor compartment connected to the brush neck. The partition is provided with a motor shaft hole and an annular groove for the two brush shafts to extend into, so as to prevent the brush shafts from moving axially.

7. The round-shaft electric toothbrush according to claim 1, characterized in that The gear transmission is composed of a connected gear on the upper brush shaft and a driven gear and a motor gear on the lower shaft that mesh with the gear for transmission.

8. The round-shaft electric toothbrush according to claim 1, characterized in that A partition is arranged at one end of the battery compartment connected to the motor compartment to support the motor, a manual switch is arranged on the outer wall of the battery compartment, a battery compartment cover with threaded connection is arranged at the rear end of the battery compartment, a charging socket is arranged on the battery compartment cover, and a charging cover is arranged outside the charging socket.

9. The round-shaft electric toothbrush according to claim 1, characterized in that Waterproof rubber sealing rings are provided at the threaded connections between the brush neck and the motor compartment, between the motor compartment and the battery compartment, between the motor compartment and the battery compartment cover, and between the battery compartment cover and the charging cover.

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