CN214857729U

CN214857729U - Electric toothbrush head assembly and electric toothbrush

Info

Publication number: CN214857729U
Application number: CN202120534703.8U
Authority: CN
Inventors: 吴林; 卢经发; 叶兵; 易亮亮
Original assignee: Lanto Electronic Ltd
Current assignee: Lanto Electronic Ltd; Kunshan Liantao Electronics Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-11-26
Anticipated expiration: 2031-03-15

Abstract

The utility model belongs to the technical field of the toothbrush, a first subassembly of electric toothbrush and electric toothbrush is disclosed, first subassembly of electric toothbrush includes the brush head pole, a bearing, brush head and driving lever subassembly, the installation cavity along axial extension has in the brush head pole, the one end of installation cavity has the installing port of radial orientation, the bearing sets up in the installing port, the brush head passes through the bearing and rotates and set up in installing port department, the rotation axis of brush head and the rotation axis collineation of bearing, the driving lever subassembly includes the driving lever and supports the cover, support the cover and connect in the chamber wall of installation cavity, the driving lever is worn to locate and is supported the cover, the one end of driving lever is for dialling the end, the other end is the drive end, dial end swing joint in brush head, the drive driving end can drive the driving lever and use to support the cover and swing around its rotation axis, so that it drives the brush head to dial the end. The coaxial connection through the bearing can reduce the friction force generated when the brush head rotates. The utility model provides an electric toothbrush brush head assembly and electric toothbrush can improve the effective utilization ratio of energy.

Description

Electric toothbrush head assembly and electric toothbrush

Technical Field

The utility model belongs to the technical field of the toothbrush, especially, relate to a first subassembly of electric toothbrush brush and electric toothbrush.

Background

The electric toothbrush belongs to a tool for cleaning teeth, and compared with a common toothbrush, the electric toothbrush can more thoroughly remove dental plaque so as to reduce oral diseases such as gingivitis, periodontal disease, gingival bleeding and the like. Generally, an electric toothbrush drives a brush head to generate high-frequency vibration or rotation through a motor core, so that toothpaste is instantly decomposed into fine foams, and gaps between teeth are deeply cleaned.

At present, the brush head assembly of the electric toothbrush mainly adopts a crank and an eccentric transmission rod to drive the brush head to rotate, and the connecting structure can generate larger friction force between the pin and the spring in the using process, so that the consumption of electric energy and mechanical energy is larger, and the energy waste is caused.

Therefore, there is a need for a toothbrush head assembly and a toothbrush that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric toothbrush brush head assembly and electric toothbrush can effectively reduce the friction, reduce the loss of electric energy and mechanical energy, improve the utilization ratio of energy.

To achieve the purpose, the utility model adopts the following technical proposal:

a power toothbrush brushhead assembly, comprising:

the brush head rod is internally provided with a mounting cavity extending along the axial direction, and one end of the mounting cavity is provided with a mounting opening facing to the radial direction;

the bearing is arranged in the mounting port;

the brush head is rotatably arranged at the mounting opening through the bearing, and the rotating axis of the brush head is collinear with that of the bearing;

the driving lever assembly comprises a driving lever and a supporting sleeve, the supporting sleeve is connected to the wall of the installation cavity, the driving lever penetrates through the supporting sleeve, one end of the driving lever is a stirring end, the other end of the driving lever is a driving end, the stirring end is movably connected to the brush head, and the driving end can drive the driving lever to swing around the supporting sleeve as a fulcrum, so that the stirring end drives the brush head to swing around the rotating axis of the brush head.

Preferably, the brush head is provided with two stirring surfaces which are parallel to each other and arranged at intervals, the stirring surfaces are parallel to the rotating axis of the brush head, the stirring end is movably positioned between the two stirring surfaces, and when the stirring end swings, the stirring surfaces are stirred to enable the brush head to swing around the rotating axis.

Preferably, the end of the poking end is of a spherical structure.

Preferably, the deflector rod assembly further comprises a waterproof ring, and the waterproof ring is clamped between the deflector rod and the support sleeve.

Preferably, one end of the mounting cavity, which is away from the mounting opening, is provided with an axially-oriented socket, the support sleeve comprises an insertion part and an outer edge part connected to one end of the insertion part, the insertion part is inserted into the mounting cavity through the socket, and the outer edge part abuts against the end part of the socket.

Preferably, the eccentric shaft is connected to the driving end, and when the eccentric shaft rotates around the axis of the eccentric shaft, the driving end is driven to swing.

Preferably, one of the outer wall of the support sleeve and the inner wall of the mounting cavity is provided with a convex key, the other is provided with a groove, and the convex key is clamped in the groove.

Preferably, the inner wall of the mounting cavity is provided with a mounting shaft extending towards the mounting opening, the inner ring of the bearing is fixedly connected with the mounting shaft, and the outer ring of the bearing is fixedly connected with the brush head.

Preferably, the outer wall of the brush head rod is further provided with a plurality of water drainage through holes communicated with the mounting cavity.

An electric toothbrush, includes the toothbrush host computer, still includes foretell electric toothbrush head subassembly, electric toothbrush head subassembly can dismantle connect in the toothbrush host computer, the toothbrush host computer can drive brush head swing.

The utility model has the advantages that:

the utility model provides a first subassembly of electric toothbrush, the swing of external drive end can drive the driving lever and use the support cover to swing as the fulcrum to the end that stirs drives the brush head and swings around its axis of rotation, thereby realizes the cleanness to the tooth. The brush head is rotated through the bearing and is set up in installing port department, and the rotation axis collineation of the rotation axis of brush head and bearing, and the coaxial coupling through the bearing can reduce the frictional force that the brush head produced when rotating, consequently, the utility model provides a brush head assembly of electric toothbrush can effectively reduce the friction, reduces the loss of electric energy and mechanical energy, the effective utilization ratio of high energy.

Drawings

FIG. 1 is a schematic view of a power toothbrush head assembly provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a powered toothbrush head assembly provided by an embodiment of the present invention;

FIG. 3 is an exploded view from one perspective of a powered toothbrush brushhead assembly provided by an embodiment of the present invention;

fig. 4 is an exploded view from another perspective of a powered toothbrush brushhead assembly provided by an embodiment of the present invention;

fig. 5 is a schematic structural view of a brush head provided by an embodiment of the present invention.

In the figure:

1. a brush head rod; 2. a bearing; 3. a brush head; 4. a deflector rod assembly; 5. an eccentric shaft;

11. an installation port; 12. a socket; 13. a mounting cavity; 14. installing a shaft; 15. a groove; 16. a drain through hole; 31. a base; 32. brushing; 33. a toggle part; 41. a deflector rod; 42. a support sleeve; 43. a waterproof ring;

331. a pulling surface; 411. a toggle end; 412. a driving end; 413. a clamping section; 421. an insertion portion; 422. an outer edge portion;

4211. a convex key.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "mounted" are to be construed broadly and can include, for example, a mounted connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present embodiment provides a brush head assembly of an electric toothbrush, which includes a brush head rod 1, a bearing 2, a brush head 3 and a lever assembly 4, wherein the brush head rod 1 has an axially extending mounting cavity 13 therein, and one end of the mounting cavity 13 has a radially facing mounting opening 11; the bearing 2 is arranged in the mounting opening 11; the brush head 3 is rotatably arranged at the mounting port 11 through the bearing 2, and the rotating axis of the brush head 3 is collinear with the rotating axis of the bearing 2; the shift lever assembly 4 comprises a shift lever 41 and a support sleeve 42, the support sleeve 42 is connected to the cavity wall of the installation cavity 13, the shift lever 41 penetrates through the support sleeve 42, one end of the shift lever 41 is a shift end 411, the other end of the shift lever 41 is a driving end 412, the shift end 411 is movably connected to the brush head 3, and the driving end 412 can drive the shift lever 41 to swing by taking the support sleeve 42 as a fulcrum, so that the shift end 411 drives the brush head 3 to swing around the rotation axis of the brush head.

The first subassembly of electric toothbrush that this embodiment provided, brush head 3 rotates through bearing 2 and sets up in installing port 11 department, and the rotation axis collineation of the rotation axis of brush head 3 and bearing 2, and the coaxial coupling through bearing 2 can reduce the frictional force that brush head 3 produced when rotating, consequently, the first subassembly of electric toothbrush that this embodiment provided can effectively reduce the friction, reduces the loss of electric energy and mechanical energy, the high-efficient utilization ratio of energy.

As shown in figures 3 and 4, the brush head 3 is provided with two parallel and spaced poking surfaces 331, the poking surfaces 331 are parallel to the rotation axis of the brush head 3, the poking end 411 is movably positioned between the two poking surfaces 331, and when the poking end 411 swings, the poking surfaces 331 are poked to enable the brush head 3 to swing around the rotation axis. The driving end 412 can be driven by external force to swing back and forth in a plane perpendicular to the shifting surface 331, and then the shifting end 411 is driven to swing back and forth in a plane perpendicular to the shifting surface 331, so that the two shifting surfaces 331 are shifted in sequence, and the swing of the brush head 3 is realized. Or the driving end 412 can be driven by external force to do circumferential oscillation around the central axis of the supporting sleeve 42, so as to drive the poking end 411 to do circumferential oscillation around the central axis of the supporting sleeve 42, thereby sequentially poking the two poking surfaces 331 and realizing the oscillation of the brush head 3.

Specifically, the end of the toggle end 411 is a spherical structure. The spherical structure can reduce the friction force generated when the poking end 411 pokes the poking surface 331, so that the brush head 3 can swing smoothly.

Specifically, one end of the mounting cavity 13, which is away from the mounting opening 11, has an axially-facing insertion opening 12, the support sleeve 42 includes an insertion portion 421 and an outer edge portion 422 connected to one end of the insertion portion 421, the insertion portion 421 is inserted into the mounting cavity 13 through the insertion opening 12, and the outer edge portion 422 abuts against an end of the insertion opening 12. The insertion part 421 realizes the insertion with the insertion opening 12, and the outer edge part 422 covers the gap between the insertion part 421 and the inner wall of the installation cavity 13, thereby playing a role of sealing and preventing the water inside from flowing from the insertion opening 12 to the driving part for providing power drive for the brush head 3.

More specifically, the shift lever assembly 4 further includes a waterproof ring 43, and the waterproof ring 43 is interposed between the shift lever 41 and the support sleeve 42. The waterproof ring 43 serves as a seal to further prevent water at the brush head 3 from flowing through the brush head rod 1 to the drive member for powering the brush head 3. In this embodiment, in order to realize the stable installation of the waterproof ring 43, the shift lever 41 has a clamping section 413, the diameter of the clamping section 413 is larger to form an annular step, and the waterproof ring 43 is clamped at the annular step.

The electric toothbrush head assembly further comprises an eccentric shaft 5, the eccentric shaft 5 is connected to the driving end 412, and when the eccentric shaft 5 rotates around the axis of the eccentric shaft, the driving end 412 is driven to swing. Specifically, the driving end 412 extends into an eccentric groove of the eccentric shaft 5, and when the eccentric shaft 5 rotates around its axis, the eccentric groove drives the driving end 412 to swing.

Optionally, one of the outer wall of the support sleeve 42 and the inner wall of the mounting cavity 13 is provided with a convex key 4211, the other is provided with a groove 15, and the convex key 4211 is clamped in the groove 15. Specifically, the groove 15 is opened on the inner wall of the mounting cavity 13, the protruding key 4211 is arranged on the outer peripheral surface of the insertion portion 421, and the protruding key 4211 and the groove 15 are matched to realize the clamping connection of the support sleeve 42 and the mounting cavity 13.

In the process of brushing teeth, water on the brush head 3 easily enters the mounting cavity 13 through the mounting hole 11, and a plurality of water drainage through holes 16 communicated with the mounting cavity 13 are formed in the outer wall of the brush head rod 1 and used for draining the water inside. The drainage through hole 16 is arranged on the side wall of the brush head rod 1 opposite to the mounting opening 11 and is close to the socket 12, so that water can be drained conveniently.

Specifically, the brush head 3 includes a base 31, bristles 32 connected to one side of the base 31, and a striking part 33 fixedly connected to the other side of the base 31, a portion of the base 31 is located in the mounting opening 11 and connected to the bearing 2, another portion of the base 31 extends out of the mounting opening 11 and is connected to the bristles 32, and the striking part 33 is provided with a striking surface 331. In this embodiment, the brush head 3 is made of degradable recycled materials, so that pollution is reduced and the environment is protected.

More specifically, the inner wall of the mounting cavity 13 is provided with a mounting shaft 14 extending towards the mounting opening 11, the inner ring of the bearing 2 is fixedly connected to the mounting shaft 14, and the outer ring of the bearing 2 is fixedly connected to the brush head 3. In this embodiment, the outer race of the bearing 2 is attached to the base 31 of the brush head 3.

When the brush bristles 32 are worn and need to be replaced, the supporting sleeve 42, the eccentric shaft 5, the waterproof ring 43 and the shifting rod 41 are simultaneously pulled out from the brush head rod 1, and only the brush head 3, the bearing 2, the mounting shaft 14 and the brush head rod 1 need to be replaced, so that the conventional brush head assembly needs to be replaced as a whole and is wasted. Therefore, the electric toothbrush head assembly provided by the embodiment can save replacement cost.

This embodiment still provides an electric toothbrush, and it includes toothbrush host computer and the first subassembly of foretell electric toothbrush, and the first subassembly of electric toothbrush can be dismantled and connect in the toothbrush host computer, and the first 3 swings of brush can be driven to the toothbrush host computer.

Specifically, the toothbrush host computer includes host computer shell, battery, automatically controlled structure and motor, and battery, automatically controlled structure and motor set up in the host computer shell, and the battery is used for automatically controlled structure and motor power supply, and automatically controlled structure is used for opening and close of control motor, and brush head pole 1 is connected in the host computer shell to make motor drive connect in eccentric shaft 5, thereby can drive end 412 and do the circumference swing round the center pin that supports cover 42, and then realize the swing of brush head 3.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An electric toothbrush brushhead assembly, comprising:

the brush head rod (1) is internally provided with a mounting cavity (13) extending along the axial direction, and one end of the mounting cavity (13) is provided with a mounting opening (11) facing in the radial direction;

a bearing (2) disposed in the mounting opening (11);

the brush head (3) is rotatably arranged at the mounting opening (11) through the bearing (2), and the rotating axis of the brush head (3) is collinear with that of the bearing (2);

driving lever subassembly (4), including driving lever (41) and support cover (42), support cover (42) connect in the chamber wall of installation cavity (13), driving lever (41) wear to locate support cover (42), the one end of driving lever (41) is for stirring end (411), and the other end is drive end (412), stir end (411) swing joint in brush head (3), drive end (412) can drive driving lever (41) with support cover (42) is the fulcrum swing, so that stir end (411) and drive brush head (3) are around its axis of rotation swing.

2. An electric toothbrush brushhead assembly of claim 1, wherein said brushhead (3) has two spaced apart parallel dial surfaces (331), said dial surfaces (331) being parallel to the axis of rotation of said brushhead (3), said dial end (411) being movably located between said two dial surfaces (331), said dial surfaces (331) being dialed by said dial end (411) as said dial end oscillates to cause said brushhead (3) to oscillate about its axis of rotation.

3. The electric toothbrush brushhead assembly of claim 2, wherein the tip of the toggle end (411) is a bulbous structure.

4. The electric toothbrush brushhead assembly of claim 1, wherein said lever assembly (4) further includes a waterproof ring (43), said waterproof ring (43) being sandwiched between said lever (41) and said support sleeve (42).

5. The electric toothbrush brushhead assembly of claim 1, wherein the end of the mounting chamber (13) facing away from the mounting opening (11) has an axially facing socket (12), the support sleeve (42) including an insert portion (421) and an outer rim portion (422) connected to one end of the insert portion (421), the insert portion (421) being inserted into the mounting chamber (13) through the socket (12), the outer rim portion (422) abutting the end of the socket (12).

6. The electric toothbrush brushhead assembly of claim 1, further comprising an eccentric shaft (5), wherein said eccentric shaft (5) is connected to said drive end (412), said eccentric shaft (5) oscillating said drive end (412) when rotated about its axis.

7. The electric toothbrush head assembly according to claim 1, wherein one of the outer wall of the support sleeve (42) and the inner wall of the mounting cavity (13) is provided with a convex key (4211), the other is provided with a groove (15), and the convex key (4211) is clamped in the groove (15).

8. An electric toothbrush brushhead assembly of any one of claims 1 to 7, wherein the inner wall of the mounting chamber (13) is provided with a mounting shaft (14) which extends towards the mounting opening (11), the inner race of the bearing (2) being secured to the mounting shaft (14) and the outer race of the bearing (2) being secured to the brushhead (3).

9. The electric toothbrush and brush head assembly of any one of claims 1-7, wherein the outer wall of the brush head rod (1) is further provided with a plurality of water drainage through holes (16) communicated with the mounting cavity (13).

10. An electric toothbrush, comprising a toothbrush main body, characterized by further comprising an electric toothbrush head assembly according to claim 8 or 9, wherein the electric toothbrush head assembly is detachably connected to the toothbrush main body, and the toothbrush main body can drive the toothbrush head (3) to swing.