CN220695388U

CN220695388U - Improved double-wheel toothbrush structure

Info

Publication number: CN220695388U
Application number: CN202321849856.7U
Authority: CN
Inventors: 李增泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-04-02
Anticipated expiration: 2033-07-13

Abstract

The utility model relates to an improved double-wheel toothbrush structure, which comprises a shell, wherein a transmission assembly is arranged in the shell, two transmission rods which are parallel to each other and can rotate in opposite directions are arranged in the transmission assembly, brush heads are respectively and axially connected to the ends of the two transmission rods extending out of the shell, the brush heads on the two transmission rods are mutually staggered in the axial direction, and each brush head comprises a brush wheel axially fixed on the transmission rod and brush hair circumferentially arranged along the brush wheel. The brush heads are arranged in a staggered manner, so that the lengths of the brush hairs can be ensured, and the cleaning capability of the toothbrush is ensured.

Description

Improved double-wheel toothbrush structure

Technical Field

The utility model belongs to the technical field of toothbrushes, and particularly relates to an improved double-wheel toothbrush structure.

Background

The double-wheel counter-rotating toothbrush is a novel toothbrush which uses two brush wheels to rotate in opposite directions, so that bristles arranged on the periphery of the brush wheels clean teeth.

The Chinese patent publication No. CN214156500U discloses a double-wheel counter-rotating toothbrush structure which comprises two brush wheels arranged in parallel. However, in the actual production process, the space between the two transmission rods is smaller due to the limitation of the size and the internal transmission structure of the toothbrush, so that the two brush wheels are arranged side by side, the rotation radius of the brush hair is insufficient, and the cleaning effect is affected.

Disclosure of Invention

The utility model aims to solve the problems and provides an improved double-wheel contrarotating toothbrush structure.

The utility model creatively provides an improved double-wheel toothbrush structure, which comprises a shell, wherein a transmission assembly is arranged in the shell, two transmission rods which are parallel to each other and can rotate in opposite directions are arranged in the transmission assembly, brush heads are respectively and axially connected to the ends of the two transmission rods extending out of the shell, the brush heads on the two transmission rods are mutually staggered in the axial direction, and each brush head comprises a brush wheel axially fixed on the transmission rod and brush bristles circumferentially arranged along the brush wheel.

The brush heads are arranged in a staggered manner, so that the lengths of the brush hairs can be ensured, and the cleaning capability of the toothbrush is ensured.

In the improved double-wheel toothbrush structure, two transmission rods are respectively provided with a brush head.

In the improved double-wheel toothbrush structure, a plurality of brush heads are respectively arranged on the two transmission rods in a staggered manner.

In the improved double-wheel toothbrush structure, the axial projection of the rotating body formed by the two groups of bristles on the two transmission rods is partially overlapped between the two transmission rods. Ensuring that the brush hair fully covers the tooth surface.

In the improved double-wheel toothbrush structure, the centers of the brush wheels of the two brush heads are respectively provided with a first limiting part along the axial direction, the two transmission rods are respectively provided with a second limiting part along the axial direction in a staggered manner, and the two first limiting parts are respectively matched and fixed with the two second limiting parts to limit the brush wheels to rotate circumferentially relative to the transmission rods.

Through the cooperation of first spacing portion and second spacing portion, avoid taking place circumference rotation between brush head and the transfer line.

In the improved double-wheel toothbrush structure, the first limiting part is a polygonal through hole with an axis penetrating through the brush wheel, and the second limiting part is a polygonal block matched with the polygonal through hole.

In the improved double-wheel toothbrush structure, the end cover is arranged at one end of the two brush heads, which is away from the shell, the end cover is detachably connected with the shell, two limiting holes which are in clearance fit with the inserting shafts at the ends of the two transmission rods are formed in the end cover, the brush heads which are positioned near one end of the shell are limited in axial direction through the axial limiting parts and the transmission rods which are connected to the transmission rods, and the brush heads which are positioned near one end of the end cover are limited in axial direction through the end cover and the transmission rods.

Through end cover and axial locating part, prevent the risk of brush head slippage.

In the improved double-wheel toothbrush structure, a toothpaste extruding device with an outlet end pointing to one end of the brush head and used for conveying toothpaste to the brush head is further arranged in the shell.

In the above-mentioned improved generation double round toothbrush structure, toothpaste extrusion device includes cavity and axial rotation locate in the cavity be arranged in with the material from the input to the screw rod of output, the pump body is connected to the output of cavity, and the pump body passes through the discharge channel and connects toothpaste transfer passage through the ooff valve, and the one end of the directional brush head of the exit end of this toothpaste transfer passage.

In the improved double-wheel toothbrush structure, the switch valve is a three-way valve, an inlet of the three-way valve is connected with the discharging channel, two outlets of the three-way valve are respectively connected with the toothpaste conveying channel and the toothpaste return channel, the toothpaste return channel is connected with a feed inlet of the pump body, and the three-way valve is provided with a pumping state communicated with the discharging channel and the toothpaste conveying channel and a return state communicated with the discharging channel and the toothpaste return channel.

Compared with the prior art, the toothpaste feed back channel directly returns to the feeding end of the pump body, the process of re-entering the pump body from the cavity is reduced, the power for transmission is saved, the stroke is shortened, and the space is saved.

In the improved double-wheel toothbrush structure, the discharging channel and the toothpaste return channel are both connected above the pump body.

The discharging channel and the toothpaste return channel are arranged above the pump body, so that the diameter of the shell is reduced, and the toothpaste return channel has a better market prospect.

In the improved double-wheel contra-rotating toothbrush structure, the pump body is a booster pump.

The pressurizing pump can be a gear pump or other pressurizing pump. The toothpaste is pressurized to be conveyed to the brush head, the feeding end of the pressurizing pump is connected with the output end of the cavity and the toothpaste return channel, and the discharging end is connected with the discharging channel.

Compared with the prior art, the utility model has the advantages that:

Compared with the prior art, the toothpaste feed-back channel directly returns to the feed end of the pump body, reduces the process of re-entering the pump body from the cavity, saves the transmission power, shortens the stroke and saves the space.

Drawings

Fig. 1 is a schematic structural view of an improved double-wheel counter-rotating toothbrush provided by the utility model.

Fig. 2 is a schematic view of a partial cross-sectional structure according to the present utility model.

Fig. 3 is a schematic view of another partial cross-sectional structure provided by the present utility model.

Fig. 4 is a schematic cross-sectional structure of a pump body according to the present utility model.

Fig. 5 is a schematic diagram of a connection structure between a brush head and a driving rod according to the present utility model.

In the figure, a casing 1, a transmission rod 2, a second limiting part 21, an axial limiting part 22, a plug-in shaft 23, a brush head 3, a brush wheel 31, bristles 32, a first limiting part 33, an end cover 4, a limiting hole 41, a toothpaste extruding device 5, a cavity 51, a toothpaste inlet 511, a screw 52, a pump body 53, a wheel axle 531, a gear ring 532, gear teeth 533, a crescent 534, a discharging channel 54, a toothpaste conveying channel 55, a three-way valve 56, a toothpaste feeding channel 57, a feeding port 58, a speed change mechanism 59, a battery 6 and a motor 7.

Detailed Description

Further illustrated by the following specific examples;

the utility model will be further illustrated with reference to specific examples, which are to be understood as illustrative only and are not intended to limit the scope of the utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

As shown in fig. 1, the improved double-wheel contra-rotating toothbrush structure comprises a shell 1, wherein a transmission assembly is arranged in the shell 1, two transmission rods 2 which are parallel to each other and can rotate in opposite directions are arranged in the transmission assembly, and the end parts of the two transmission rods 2 extending out of the shell 1 are respectively and axially connected with a brush head 3.

One end of the two brush heads 3, which is away from the shell 1, is provided with an end cover 4, and the end cover 4 and the shell 1 are detachably connected through a side cover. The brush head is convenient to replace. Specifically, the side cover is detachably connected to one side of the top end of the casing 1, and extends from one side of the two brush heads 3 to the top end of the brush heads 3 to be vertically connected with the end cover 4, and the end cover 4 is provided with two limiting holes 41 in clearance fit with the inserting shafts 23 of the end parts of the two transmission rods 2.

The two transmission rods 2 drive the brush heads 3 to rotate, so that the two brush heads 3 rotate in opposite directions on one side away from the extension surface to clean teeth.

The brush heads 3 on the two transmission rods 1 are mutually staggered in the axial direction. The two brush heads 3 are arranged on the two transmission rods 1 one by one.

Referring to fig. 1 and 5, the brush head 3 includes a brush wheel 31 axially fixed to the driving rod 2 and bristles 32 circumferentially arranged along the brush wheel 31. The axial projections of the rotating body formed by the two sets of bristles 32 partially coincide between the two drive rods 2. Bristles 32 extend beyond the side edges of the end cap 4 to contact the teeth. The centers of the brush wheels 31 of the two brush heads 3 are respectively provided with a first limiting part 33 along the axial direction, the first limiting parts 33 are polygonal through holes penetrating through the centers of the brush wheels 31, the two transmission rods 2 are respectively provided with a second limiting part 21 along the axial direction in a staggered manner, the second limiting parts 21 are polygonal blocks axially arranged on the transmission rods 2, and the polygonal blocks are in interference fit with the polygonal through holes so as to limit the brush wheels 31 to rotate relative to the transmission rods 2 in the circumferential direction.

The end surface of the transmission rod 2 protrudes out of the second limiting part 21, so that the transmission rod 2 axially limits the brush wheel 31 of the brush head 3. In a preferred embodiment, the second limiting portion 21 is a polygonal block formed by cutting on the transmission rod 2, that is, the cross section of the transmission rod 2 is greater than or equal to the circumscribed circle of the cross section of the second limiting portion 21.

The brush head 3 positioned near one end of the shell 1 is axially limited by the drive rod 2 through an axial limiting piece 22 connected to the drive rod 2, and the brush head 3 positioned near one end of the end cover 4 is axially limited by the end cover 4 and the drive rod 2.

The axial limiting piece 22 is of a truncated cone-shaped structure with the diameter gradually reduced from bottom to top, the bottom end of the axial limiting piece protrudes out of the second limiting portion 21, so that the brush wheel 31 of the brush head 3 is conveniently sleeved into the second limiting portion 21 through the truncated cone-shaped structure, and the bottom surface of the truncated cone-shaped structure abuts against the top end of the brush wheel 31 to axially limit.

In a preferred embodiment, the brush wheel 31 is made of a material having a certain elasticity, for example: the plastic material, the brush wheel 31 relies on the elasticity of self under the exogenic action to pass through the axial locating part 22 that the diameter is slightly greater than first spacing portion 33, with second spacing portion 21 interference fit, during the change, also can rely on self elasticity to deviate from the axial locating part 22 that supports and lean on its tip under the exogenic action.

As shown in fig. 3, a battery 6, a motor 7 and a toothpaste squeezing device 5 having an outlet end directed to one end of the brush head 3 for delivering toothpaste to the brush head 3 are further provided in the housing 1.

The toothpaste squeezing device 5 comprises a cavity 51 and a screw 52 axially and rotatably arranged in the cavity 51 for pushing the material in the cavity 51 from the input end to the output end. A toothpaste inlet 511 is provided at one side of the cavity 51, and the toothpaste inlet 511 is opened and closed by a sealing cover. The battery 6 supplies power to the motor 7, the motor 7 drives the screw 52, the motor 7 can select a variable speed motor 7 to control the rotating speed, and the motor 7 can also be connected with the screw 52 by adding a reduction gearbox. The output end of the cavity 51 communicates with the pump body 53 so that toothpaste can enter the pump body 53 from the cavity 51.

One construction of the pump body 53 is shown in fig. 4, and the pump body 53 is an internal gear pump, which includes a ring gear 532 having a gear inside, gear teeth 533 engaged with one side of the ring gear 532, and a crescent 534 provided between the ring gear 532 and the gear teeth 533, the gear teeth 533 being not coaxial with the ring gear 532. Referring to fig. 3 and 4, the wheel axle 531 of the gear teeth 533 is connected to the screw 52, and is connected to the two transmission rods 2 via the speed change mechanism 59 to rotate the transmission rods 2 in opposite directions.

The speed change mechanism 59 includes a speed change gear set for adjusting a speed change between the transmission lever 2 and the pump body 53.

As shown in fig. 2, the discharge passage 54 of the pump body 53 is connected to a toothpaste transfer passage 55 and a toothpaste return passage 57, respectively, through a three-way valve 56, and the outlet end of the toothpaste transfer passage 55 is directed to one end of the brush head 3. The toothpaste return passage 57 is connected to a feed port 58 of the pump body 53. That is, the feeding end of the pump body 53 is connected to the output end of the cavity 51 and the toothpaste return passage 57, and the discharging end is connected to the discharging passage 54.

The three-way valve 56 includes an oblate cavity communicating with the toothpaste transfer passage 55, the toothpaste return passage 57 and the discharge passage 54, respectively, a semicircular valve core rotatably disposed in the oblate cavity, and a deflector rod connected to the valve core and extending to the outside of the housing 1. The three-way valve 56 has a pumping state in which the discharge passage 54 communicates with the toothpaste transfer passage 55 and a return state in which the discharge passage 54 communicates with the toothpaste return passage 57. The discharge channel 54 and the toothpaste return channel 57 are connected above the pump body 53.

The working principle of the utility model is as follows:

when the transmission rod is used, the power supply is started, the motor 7 rotates, the pump body 53 is driven to operate through the screw 52, and meanwhile, the transmission rod 2 is driven to rotate through the speed change mechanism 59. The transmission rod 2 drives one side of the brush head 3 exposed to the outside to rotate oppositely so as to clean teeth. The screw 52 conveys the toothpaste in the cavity 51 to the upper end, enters the pump body 53 from one side, is pressed by the pump body 53, and is pressurized and output from the discharge channel 54. When the deflector rod is shifted to the pumping state, the discharging channel 54 is communicated with the toothpaste conveying channel 55, so that the toothpaste is extruded from the outlet of the toothpaste conveying channel 55 to the brush head 3. When the poking rod is poked to a feeding state, the discharging channel 54 is communicated with the toothpaste feeding channel 57, and toothpaste is returned to the feeding end of the pump body 53 through the toothpaste feeding channel 57.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as housing, drive rod, second limiter, axial limiter, plug shaft, brush head, brush wheel, bristles, first limiter, end cap, limiting hole, toothpaste squeezing device, cavity, toothpaste inlet, screw, pump body, axle, gear ring, gear tooth, crescent, discharge channel, toothpaste transfer channel, three-way valve, toothpaste return channel, feed inlet, speed change mechanism, battery, motor are more used herein. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims

1. The utility model provides an improved generation double round toothbrush structure, includes casing (1), is provided with drive assembly in casing (1), has two drive rods (2) that are parallel to each other and can pivoted casing (1) in opposite directions in this drive assembly, and the tip that these two drive rods (2) extend casing (1) is axial connection has brush head (3), its characterized in that respectively: the brush heads (3) on the two transmission rods (2) are arranged in a staggered manner in the axial direction, and each brush head (3) comprises a brush wheel (31) axially fixed on the transmission rod (2) and brush hairs (32) circumferentially arranged along the brush wheel (31).

2. An improved dual wheel toothbrush construction as recited in claim 1, wherein: the axial projections of the rotating body formed by the two groups of bristles (32) on the two transmission rods (2) partially coincide between the two transmission rods (2).

3. An improved dual wheel toothbrush construction as recited in claim 1, wherein: the brush wheel (31) centers of the two brush heads (3) are respectively provided with a first limiting part (33) along the axial direction, the two transmission rods (2) are respectively provided with a second limiting part (21) along the axial direction in a staggered way, and the two first limiting parts (33) are respectively matched and fixed with the two second limiting parts (21) to limit the brush wheel (31) to rotate relative to the transmission rods (2) in the circumferential direction.

4. An improved dual wheel toothbrush construction as recited in claim 3, wherein: the first limiting part (33) is a polygonal through hole with an axis penetrating through the brush wheel (31), and the second limiting part (21) is a polygonal block matched with the polygonal through hole.

5. An improved dual wheel toothbrush construction as recited in claim 4, wherein: the brush head (3) near the shell (1) one end is equipped with end cover (4), and end cover (4) can dismantle with shell (1) and be connected, and be equipped with on end cover (4) with two transfer line (2) tip peg graft axle (23) clearance fit's two spacing holes (41), be located brush head (3) near shell (1) one end and pass through axial locating part (22) and transfer line (2) axial spacing of connecting on transfer line (2), be located brush head (3) near end cover (4) one end and pass through end cover (4) and transfer line (2) axial spacing.

6. An improved dual wheel toothbrush construction as recited in claim 1, wherein: the toothpaste extruding device (5) with the outlet end pointing to one end of the brush head (3) and used for conveying toothpaste to the brush head (3) is also arranged in the shell (1).

7. An improved dual wheel toothbrush construction as recited in claim 6, wherein: the toothpaste extruding device (5) comprises a cavity (51) and a screw (52) axially and rotationally arranged in the cavity (51) and used for pushing materials in the cavity (51) from an input end to an output end, the output end of the cavity (51) is connected with a pump body (53), the pump body (53) is connected with a toothpaste conveying channel (55) through a discharging channel (54) via a switch valve, and the outlet end of the toothpaste conveying channel (55) points to one end of the brush head (3).

8. An improved dual wheel toothbrush construction as recited in claim 7, wherein: the on-off valve is a three-way valve (56), an inlet of the three-way valve (56) is connected with a discharging channel (54), two outlets of the three-way valve (56) are respectively connected with a toothpaste conveying channel (55) and a toothpaste return channel (57), the toothpaste return channel (57) is connected with a feeding port (58) of the pump body (53), and the three-way valve (56) is provided with a pumping state communicated with the discharging channel (54) and the toothpaste conveying channel (55) and a return state communicated with the discharging channel (54) and the toothpaste return channel (57).

9. An improved dual wheel toothbrush construction as recited in claim 8, wherein: the discharging channel (54) and the toothpaste return channel (57) are both connected above the pump body (53).

10. An improved two-wheeled toothbrush structure as claimed in claim 7 or 8,

the method is characterized in that: the pump body (53) is a booster pump.