Patent Application
20240341937
The disclosure relates to the mechanical field, and more particularly to a toothbrush head for an electric toothbrush.
The toothbrush head of a conventional electric toothbrush has only one-sided brush bristles. As the upper and lower rows of the teeth are uneven, the blind area in the upper and inner sides of the teeth are difficult to clean. In addition, when brushing the teeth, it is necessary to change the directions of the toothbrush head for many times to clean the outer sides and the inner sides of the teeth and the surfaces of the molar teeth, which is time-consuming and laborious and a bad tooth brushing habit may be developed.
One objective of the disclosure is to provide a toothbrush head for an electric toothbrush.
To achieve the objective, the following technical schemes are adopted.
The disclosure provides an electric toothbrush comprising a toothbrush body; the toothbrush body comprises a toothbrush head; the toothbrush head comprises a handle part, a first platy body disposed below the handle part, and a first brushing sheet and a second brushing sheet disposed side by side and below the first platy body; and
In a class of this embodiment, the handle part comprises a first through hole, and a first pressing nail disposed through the first through hole; with the first pressing nail as a first rotating shaft, the first platy body comprises a first mounting hole for receiving the first rotating shaft;
In a class of this embodiment, the lining plate comprises two second mounting holes, and the two second mounting holes are respectively disposed in two side portions of the lining plate; and
The brush bristles on the lower surface of the second platy body are disposed vertically; the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second rush bristle sheet are disposed obliquely.
In a class of this embodiment, the first platy body comprises a first cylindrical protrusion; a front portion of the handle part comprises a driving wheel; with the first cylindrical protrusion as a first rotating shaft, a middle portion of the driving wheel comprises a first through hole for receiving the first rotating shaft;
The driven wheel and the cam are of an integrated structure.
The electric toothbrush comprises two first brushing sheet brackets, and the two first brushing sheet brackets are respectively disposed on two side portions of the lining plate; and
The brush bristles on the lower surface of the second platy body are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second rush bristle sheet are disposed obliquely.
In a class of this embodiment, a rear side surface of the first brushing sheet comprises a first embedding groove, and a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and
In a class of this embodiment, a front portion of the handle part comprises a mounting hole; a fixed nail is disposed through the mounting hole; the first platy body is disposed below the handle part; with the fixed nail as a first rotating shaft, a middle portion of the first platy body comprises a first through hole for receiving the first rotating shaft;
The electric toothbrush comprises two first brushing sheets, and the two first brushing sheets are respectively disposed on two side portions of the first sliding piece; and
The first brushing sheets are connected to the first sliding piece via the second rotating shaft, and the second brushing sheets are connected to the second sliding piece via the third rotating shaft.
The brush bristles on the lower surface of the first platy body are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet are disposed obliquely and the brush bristles on the front side surface of the second rush bristle sheet are disposed obliquely.
In a class of this embodiment, a rear side surface of the first brushing sheet comprises a first embedding groove; a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and
In a class of this embodiment, a second platy body is disposed below the handle part; the second platy body comprises a first cylindrical protrusion, and the front portion of the handle part is provided with a first groove for receiving the first cylindrical protrusion;
In a class of this embodiment, the front portion of the handle part comprises a second groove; a side wall of the second groove is provided with a fourth cylindrical protrusion and a fifth cylindrical protrusion; a first connecting rod is fixed to the fourth cylindrical protrusion, and a cross section of the first connecting rod is V-shaped; the middle portion of the first connecting rod is provided with a third through hole for receiving the fourth cylindrical protrusion;
The following advantages are associated with the electric toothbrush comprising three-sided brush bristles of the disclosure. Owing to the surrounding effect of the three-sided brush bristles and adapting to the thickness change from the frontal teeth to the molar teeth, a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth. The design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
To further illustrate, embodiments detailing an electric toothbrush with three-sided brush bristles are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure.
As shown in
The electric toothbrush comprises two second mounting holes, and the two second mounting holes are respectively disposed in two side portions of the lining plate 13. The electric toothbrush comprises two fourth mounting holes, and the two fourth mounting holes are respectively disposed in two side portions of the second platy body 6. The electric toothbrush comprises two first brushing sheets 9 and second brushing sheets 8; the four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
The cross section of the groove on the steering member 12 is U-shaped. It is convenient for the protrusion 10 on the front side of the handle part 1 to push the steering member 12 to generate angle deflection; the larger the angle by which the handle part 1 rotates is, the larger the gap between the first brushing sheet 9 and the second brushing sheet 8 is. The effect of being self-adaptive to tooth thickness is improved.
The handle part 1 is provided with the second embedding groove, and the upper portion of the stop dog 2 is disposed in the second embedding groove. A side surface of the stop dog 2 close to the first rotating shaft 16 is a cambered surface. In order to detach the stop dog 2, one side surface of the stop dog 2 is cambered, thereby improving the bulky body pushing effect, and it is smoother to push the bulky body 7.
To improve the cleaning effect, the brush bristles on the lower surface of the second platy body 6 are disposed vertically, the brush bristles on the rear side surface of the first brushing sheet 9 are disposed obliquely and the brush bristles on the front side surface of the second rush bristle sheet 8 are disposed obliquely.
The cross section of each of the brushing sheet brackets 14 is V-shaped; the third mounting hole is formed in the middle portion of the brushing sheet bracket 14; two side portions of the brushing sheet bracket 14 are provided with second insertion holes; the upper portion of the first brushing sheet 9 is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes. The upper portion of the first brushing sheet 9 is provided with a third embedding groove; the third embedding groove is internally provided with a nut; a lower portion of the connecting rod 15 is provided with an external nut, and a lower portion of the connecting rod 15 is screwed into the nut. The first pressing nail 16 comprises a first head and a first straight bar disposed below the first head; the first straight bar penetrates through the first through hole, and a width of the first head is greater than a diameter of the first through hole. The second pressing nail 17 comprises a second head and a second straight bar disposed below the second head; the second straight bar penetrates through the second through hole, and a width of the second head is greater than a diameter of the fourth through hole. In order to ensure a fixing effect, the structural stability of the device is improved.
When teeth are brushed, the front surface of the toothbrush is placed in the oval cavity, and the user pushes the handle part 1 along a tooth-brushing direction; the handle part 1 rotates, and the protrusion 10 disposed on the front side of the handle part 1 pushes the steering member 12 to deflect at angle, such that a certain gap is distracted to fit a corner of a tooth; the handle part 1 rotates continuously; the stop dog 2 mounted on the handle part 1 pushes the bulky body 7 to shift along with rotation; the bulky body 7 drives the sliding plate 5 and the connecting piece to shift together, such that the first brushing sheet 9 and the second brushing sheet 8 expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring 11 to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
As shown in
The driven wheel 19 and the cam 20 are of an integrated structure. The driven wheel 19 and the cam 20 are integrally formed by a plastic, such that a transmission effect is guaranteed.
The steering member 29 is a bulky body. A side portion of the steering member 29 close to the driven wheel 19 is provided with a groove. A bottom surface of the groove is cambered. It is ensured that the pushing effect that the cam 20 pushes the steering member 29 smoother.
There are two first brushing sheet brackets 31, and the two first brushing sheet brackets 31 are respectively disposed on two side portions of the lining plate 30; and there are two second brushing sheet brackets 33, and the two second brushing sheet brackets 33 are respectively disposed on two side portions of the second platy body 23. Thus, three are two first brushing sheets 26 and second brushing sheets 25; the four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
To improve the cleaning effect, the brush bristles disposed on the lower surface of the second platy body 23 are disposed vertically, and the brush bristles disposed on the rear side surface of the first brushing sheet 26 are disposed obliquely and the brush bristles disposed on the front side surface of the second rush bristle sheet are disposed obliquely.
The rear side surface of the first brushing sheet 26 comprises a first embedding groove, and a first tooth contact piece 24 is disposed in the first embedding groove; the first tooth contact piece 24 comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and a front side surface of the second brushing sheet 25 comprises a second embedding groove; a second tooth contact piece 34 is disposed in the second embedding groove; the second tooth contact piece 34 comprises a second protrusion, and an outer side surface of the second protrusion is cambered. Both the first tooth contact piece 24 and the second tooth contact piece 34 are strip-type body. There are two first protrusions and the two first protrusions are disposed on two side portions of the first tooth contact piece 24; and there are two second protrusions and the two second protrusions are disposed on two side portions of the second tooth contact piece 34. The first tooth contact piece 24 and the second tooth contact piece 34 in contact with teeth with different thicknesses can push the first brushing sheet 26 and the second brushing sheet 25 to expand towards two sides along with thickness change of the teeth so as to be self-adaptive to the thickness change from the front tooth to the molar tooth. The two first protrusions and two second protrusion fit the surfaces of the teeth during use, such that the brushing sheets fit the surfaces of the teeth better after rotation, and thus, the contact area between the brush bristles and the surfaces of the teeth is larger, and the cleaning effect is improved.
The upper portion of the first cylindrical protrusion 28 is provided with annular protrusion for fixing the handle part 18. The first platy body 21 is provided with two driven wheel mounting columns; middle portions of the driven wheel 19 and the cam 20 are provided with a fourth through hole for penetrating the driven wheel mounting columns; a second retainer ring for fixing the position of the driven wheel 19 is disposed above the driven wheel 19, and the second retainer ring is fixed to the upper portion of the driven wheel mounting columns. The cross section of the first brushing sheet bracket 31 is V-shaped; the second mounting hole is formed in the middle portion of the first brushing sheet bracket 31; two side portions of the first brushing sheet bracket 31 are provided with first insertion holes; the upper portion of the first brushing sheet 26 is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes; the cross section of the second brushing sheet bracket 33 is V-shaped; the third mounting hole is formed in the middle portion of the second brushing sheet bracket 33; two side portions of the second brushing sheet bracket 33 are provided with second insertion holes; the upper portion of the second brushing sheet 25 is provided with two cylindrical protrusions, and the cylindrical protrusions are inserted into the second insertion holes. In order to ensure a fixing effect, the structural stability of the device is improved.
When the teeth are brushed, the front surface of the toothbrush is placed in the oval cavity, and the user pushes the handle part 18 along a tooth-brushing direction; the handle part 18 rotates, and the driving wheel 27 disposed on the front side of the handle part 18 is in engaged transmission with the driven wheel 19; the driven wheel 19 drives the cam 20 below to push the steering member 29 to deflect at angle, such that a certain gap is distracted to fit a corner of a tooth; the first tooth contact piece 24 and the second tooth contact piece 34 mounted on the first brushing sheet 26 and the second brushing sheet 25 are in contact with the teeth with different thicknesses so as to further push the first brushing sheet 26 and the second brushing sheet 25 to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring 32 to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
As shown in the
A cross section of the cam 36 is elliptical. Thus, the first sliding piece 37 and the second sliding piece 38 are pushed conveniently at the same time.
The electric toothbrush comprises two first brushing sheets 41, and the two first brushing sheets 41 are respectively disposed on two side portions of the sliding piece; and the electric toothbrush also comprises two second brushing sheets 43, and the two second brushing sheets 43 are respectively disposed on two side portions of the second sliding piece 38. The first brushing sheets 41 are connected to the first sliding piece 37 via the second rotating shaft and the second brushing sheets 43 are connected to the second sliding piece 38 via the third rotating shaft. The four brushing sheets are rotatable, and different curved surfaces of teeth are laminated according to the design of the split brush bristles effectively, such that teeth gaps are cleaned efficiently.
To improve the cleaning effect, the brush bristles disposed on the lower surface of the first platy body 42 are disposed vertically, the brush bristles disposed on the rear side surface of the first brushing sheet 41 are disposed obliquely and the brush bristles disposed on the front side surface of the second rush bristle sheet are disposed obliquely.
Both the first sliding piece 37 and the second sliding piece 38 are bulky bodies; the middle of each of the bulky bodies is provided with a groove for placing the first platy body 42; the cam 36 is disposed above the first platy body 42, and the spring 40 is disposed below the first platy body 42. Two side portions on the first platy body 42 are provided with strip-type protrusions, and both the first sliding piece 37 and the second sliding piece 38 are provided with strip-type grooves matched with the strip-type protrusions. The using effect of the device is ensured, such that the first sliding piece 37 and the second sliding piece 38 are prevented from sliding laterally.
The rear side surface of the first brushing sheet 41 comprises a first embedding groove; a first tooth contact piece is disposed in the first embedding groove; the first tooth contact piece comprises a first protrusion, and an outer side surface of the first protrusion is cambered; and a front side surface of the second brushing sheet 43 comprises a second embedding groove; a second tooth contact piece is disposed in the second embedding groove; the second tooth contact piece comprises a second protrusion, and an outer side surface of the second protrusion is cambered. Both the first tooth contact piece and the second tooth contact piece are strip-type body. There are two first protrusions and the two first protrusions are disposed on two side portions of the first tooth contact piece; and there are two second protrusions and the two second protrusions are disposed on two side portions of the second tooth contact piece. The first tooth contact piece and the second tooth contact piece in contact with teeth with different thicknesses can push the first brushing sheet 41 and the second brushing sheet 43 to expand towards two sides along with thickness change of the teeth so as to be self-adaptive to the thickness change from the front tooth to the molar tooth. The two first protrusions and two second protrusion fit the surfaces of the teeth during use, such that the brushing sheets fit the surfaces of the teeth better after rotation, and thus, the contact area between the brush bristles and the surfaces of the teeth is larger, and the cleaning effect is improved.
When the teeth are brushed, the front surface of the toothbrush is placed in the oval cavity, the user pushes the handle part 35 along a tooth-brushing direction, the handle part 35 rotates, and the cam 36 disposed on the front side of the handle part 35 pushes and distracts the first sliding piece 37 and the second sliding piece 38 to fit the corner of the tooth; the first tooth contact piece and the second tooth contact piece mounted on the first brushing sheet 41 and the second brushing sheet 43 are in contact with the teeth with different thicknesses so as to further push the first brushing sheet 41 and the second brushing sheet 43 to deflect and expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring 40 to fit the tooth. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
As shown in
The front portion of the handle part 44 comprises a second groove; a side wall of the second groove is provided with a fourth cylindrical protrusion 57 and a fifth cylindrical protrusion 58; a first connecting rod 59 is fixed to the fourth cylindrical protrusion 57; a cross section of the first connecting rod 59 is V-shaped, and the middle portion of the first connecting rod 59 is provided with a third through hole for receiving the fourth cylindrical protrusion 57; the lower portion of the pull rod 52 is provided with a third protrusion for pushing and pulling the first connecting rod 59, and the third protrusion is disposed above the third through hole; the front side of the first connecting rod 59 is provided with a second connecting sheet 60; the first connecting rod 59 is provided with a sixth cylindrical protrusion; the back portion of the second connecting sheet 60 is provided with a fourth through hole for receiving the sixth cylindrical protrusion; the front side of the second connecting sheet 60 is provided with the second connecting rod 61; the back portion of the second connecting rod 61 is provided with a seventh cylindrical protrusion, and the front portion of the second connecting sheet 60 is provided with a fifth through hole for receiving the seventh cylindrical protrusion; the middle portion of the second connecting rod 61 is provided with a fourth through hole for receiving the sixth cylindrical protrusion, and the front portion of the second connecting rod 61 is disposed below the pushing piece 48; the front portion of the handle part 44 is provided with a mounting groove; a middle portion of the pushing piece 48 is disposed in the mounting groove, and a depth of the mounting groove is greater than a thickness of the middle portion of the pushing piece 48. By means of the design, when the handle part 44 rotates, the pushing piece 48 and the sliding pieces are in contact or non-contact. When the handle part 44 starts to rotate, the pushing piece 48 and the sliding pieces are in a contact state, the pushing piece 48 pushes the sliding pieces to move forwards; the sliding pieces drive the second brushing sheet 50 to move forward so as to further drive the first brushing sheet 51 and the second brushing sheet 50 to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth; when the handle part 44 rotates to a certain extent, a third protrusion on the lower portion of the pull rod 52 pushes the first connecting rod 59; the first connecting rod 59 drives the second connecting rod 61 to move via the second connecting sheet 60 so as to lift the upper portion of the second connecting rod upwards and push the pushing piece 48 upwards, such that the pushing piece 48 and the sliding piece are in a non-contact condition, and under the non-contact condition, the sliding piece and the handle part 44 are in contact; the handle part 44 rotates to push the sliding pieces, and the toothbrush head is not limited in rotating angle as the pushing piece 48 is in contact with the sliding pieces, such that the rotatable angle of the toothbrush head is improved and it is convenient for the user to brush teeth.
The cross section of the front portion of the second protrusion 49 is elliptical. The pushing piece 48 is a bulky body; two side portions of the bulky body are provided with fourth protrusion bended outwards, and the cross section of the front portion of the fourth protrusion is elliptical. It is convenient for the second protrusion 49 to push the sliding pieces to deflect smoother and for the pushing piece 48 to push the sliding piece to move forward smoother.
To improve the cleaning effect, the brush bristles d on the lower surface of the sliding piece are disposed vertically; the brush bristles on the front side surface of the first brushing sheet 51 are disposed obliquely, and the brush bristles on the rear side surface of the second rush bristle sheet are disposed obliquely.
When the toothbrush is used, the front surface of the toothbrush is placed in the oval cavity; the user pushes the handle part 44 along a tooth-brushing direction; the handle part 44 rotates about the first cylindrical protrusion 46, and the second protrusion 49 disposed on the front side of the handle part 44 is in contact with two third cylindrical protrusions below the rotating piece to push the rotating sheet 54 to deflect in angle, such that the rotating sheet 54 drives the first brushing sheet 51 below to deflect via the connecting rod, and thus, a gap between the first brushing sheet 51 and the second brushing sheet 50 is distracted to fit the corner of the tooth; and meanwhile, the pushing piece 48 disposed on the front side of the handle part 44 pushes the sliding pieces to move forwards, and the sliding pieces drive the first brushing sheet 51 to move forwards to further drive the first brushing sheet 51 and the second brushing sheet 50 to expand towards two sides along with thickness change to be self-adaptive to the thickness change from the front tooth to the molar tooth, and then the brush bristle is frapped by the spring 56 to fit the tooth. After use of the toothbrush, the toothbrush head is restored. Further, by matching and exerting the parts, a self-adaptive effect of expanding the toothbrush head, clinging the toothbrush head to the teeth and transforming the angle freely is achieved.
Owing to the surrounding effect of the three-sided brush bristles and adapting to the thickness change from the frontal teeth to the molar teeth, a self-adaptive effect that the brush bristles automatically attach to the teeth can achieve the purpose of effectively cleaning the teeth of people with different sizes of oral cavities and teeth. The design of the three-sided brush bristles solves the cleaning problem of the blind area on the inner side of the tooth and avoids the development of various bad tooth brushing habits. A user no longer needs to change the position of the toothbrush to search for a cleaning point and only needs to push the toothbrush head to complete the whole tooth brushing process, such that the tooth brushing process is simplified and the tooth brushing efficiency is improved.
It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201910183180.4 | Mar 2019 | CN | national |
This application is a continuation-in-part of U.S. application Ser. No. 17/403,817, filed on Aug. 16, 2021, now pending, which is a continuation-in-part of International Patent Application No. PCT/CN2020/076450 with an international filing date of Feb. 24, 2020. This Application also claims foreign priority to Chinese Patent Application No. 201910183180.4 filed Mar. 11, 2019. The contents of all of the aforementioned Applications, including any intervening amendments thereto, are incorporated herein by reference in their entirety. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P.C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, MA 02142.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17403817 | Aug 2021 | US |
| Child | 18755628 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2020/076450 | Feb 2020 | WO |
| Child | 17403817 | US |
