CN113288489A - Electric toothbrush - Google Patents
Electric toothbrush Download PDFInfo
- Publication number
- CN113288489A CN113288489A CN202110719156.5A CN202110719156A CN113288489A CN 113288489 A CN113288489 A CN 113288489A CN 202110719156 A CN202110719156 A CN 202110719156A CN 113288489 A CN113288489 A CN 113288489A
- Authority
- CN
- China
- Prior art keywords
- brush
- brush head
- rod
- plastic part
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/349—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
Abstract
An electric toothbrush comprises a brush head, a brush handle rod and a mounting structure for connecting the brush head and the brush handle rod, wherein a power source is arranged inside the brush handle rod, the power output end of the power source is connected with a transmission shaft, and a pinion is arranged at the shaft end of the transmission shaft; the brush head comprises an outer brush head, a middle brush head and an inner brush head which are arranged on the main shaft, and the inner side of the inner brush head is provided with a bull gear; the mounting structure comprises a left brush rod plastic part and a right brush rod plastic part which are arranged in a left-right split mode, and the left brush rod plastic part and the right brush rod plastic part are buckled with each other to form a first mounting groove and a second mounting groove; the gear wheel and the pinion are respectively embedded in the first mounting groove and the second mounting groove, and the brush head is embedded in the first mounting groove through the gear wheel to be connected with the brush handle rod. The brush head of the invention has higher installation precision and more accurate positioning, and can not cause the gear meshing clearance to be too large to cause transmission failure. The problem that the brush head is scrapped due to the fact that the meshing clearance of the gears is enlarged due to abrasion of the main shaft and the brush rod of the original electric toothbrush is also solved.
Description
Technical Field
The invention relates to a toothbrush, in particular to an electric toothbrush.
Background
At present, toothbrushes become necessities of life of people. Along with the development of the technology, the types of toothbrushes are more and more, and the electric toothbrush appears as a new form, so that the original tooth brushing mode of people is changed, and the electric toothbrush is gradually substituted for a common toothbrush.
Chinese patent CN2016212565252 discloses an all-directional electric toothbrush (refer to fig. 1 a-b), in order to make the brush head thinner as possible, the brush shaft is inserted from the rear side of the brush rod and is tightly fitted and fixed with the crown tooth brush head at the other side, the brush rod is clamped between the brush shaft and the crown tooth brush head to ensure a proper gap, and the pinion installed in the brush rod can be just engaged with the gear at the inner side of the crown tooth brush head.
The disadvantages are that: (1) the assembly precision requirement of spare part is high, promotes manufacturing degree of difficulty and manufacturing cost. In the scheme, the large gear and the small gear are arranged on different parts, and the assembled reference surfaces are different and need to be precisely meshed in spatial positions, so that the high requirements on the dimensional accuracy of a plurality of parts directly or indirectly related to the installation positions of the large gear and the small gear are caused, and the high accuracy is also needed during assembly; in the scheme, the brush shaft, the brush rod and the crown tooth brush head are pressed and assembled together through a special tool, and a large gear on the inner side of the crown tooth brush head is ensured to be meshed with a small gear in the brush rod in the press-fit process, so that the crown tooth brush head can normally rotate and cannot have too large gaps; the clearance is large, and the meshing part of the crown tooth brush head and the pinion is easy to slide or break; too small a gap, the brush head is not rotating or the resistance is too great. Because the assembly reference is not uniform, the assembly position of the gear on the inner side of the crown tooth brush head is inaccurate, and the assembly precision does not meet the requirement, thereby influencing the use performance of the electric toothbrush.
(2) The brush shaft in the scheme is a cantilever beam to support the weight of the whole brush head and also supports extra load during tooth brushing, the load of the brush shaft is very large, the bearing area of the end face of the brush shaft and the bearing area of the brush rod and the brush shaft are smaller, the end face of the brush shaft and the end face of the brush rod are abraded after long-time operation, so that the gap is enlarged, the gap between the crown tooth brush head and the pinion can be enlarged, and the meshing part can slide or break teeth more easily, thereby influencing the service life of the electric toothbrush.
Disclosure of Invention
In order to overcome the problems, the invention provides the electric toothbrush which is convenient and reliable to mount and reduces the occurrence of tooth sliding or tooth breakage.
The technical scheme adopted by the invention is as follows: an electric toothbrush comprises a brush head, a brush handle rod and a mounting structure for connecting the brush head and the brush handle rod, wherein the axis of the brush head is perpendicular to the axis of the brush handle rod; the brush head comprises an outer brush head, a middle brush head and an inner brush head which are sequentially arranged on the main shaft, the outer brush head and the inner brush head are oppositely arranged, one side close to the brush handle rod is taken as the inner side, and the other side is taken as the outer side; the inner side of the inner side brush head is provided with a gearwheel, and the gearwheel, the outer side brush head, the middle brush head and the inner side brush head are assembled on the main shaft together; the top of the brush handle rod is provided with an installation structure, the installation structure comprises a left brush rod plastic part and a right brush rod plastic part which are arranged in a left-right split mode, and the left brush rod plastic part and the right brush rod plastic part are buckled with each other to form a first installation groove and a second installation groove which correspond to the shapes of the large gear and the small gear; when the left brush rod plastic part and the right brush rod plastic part are buckled, the large gear and the small gear are respectively embedded in the first mounting groove and the second mounting groove, and the outer side wall of the first mounting groove is supported on the boss of the large gear; the first mounting groove and the second mounting groove restrain the large gear and the small gear to rotate only and not to move axially, the small gear is in meshed transmission with the large gear, and the brush head is embedded into the first mounting groove through the large gear to be connected with the brush handle rod.
Further, the structure of outside brush head, inboard brush head is unanimous, all includes brush head working of plastics and sets up a plurality of brush hair bundles on brush head working of plastics, is equipped with a plurality of pores of planting along the circumference interval on the brush head working of plastics, and each brush hair bundle passes with the help of the air current slant and plants the pore, and the tail end of each brush hair bundle crosses in brush head working of plastics central axis department after passing and planting the pore, and the tail end of adjacent brush hair bundle is through heating melt ring form stationary blade as an organic whole.
Further, the brush head plastic part is of a circular truncated cone structure, the circular truncated cone structure is hollow inside and open at the bottom, a plurality of planting holes are formed in the side face of the circular truncated cone structure at intervals along the circumferential direction, the circular fixing sheet is located inside the circular truncated cone structure, and a bottom cover is arranged on the bottom opening of the circular truncated cone structure.
Furthermore, the planting holes are circular holes, elliptical holes, triangular holes, square holes, rhombic holes or special-shaped holes.
Further, the front end faces of the bristle bundles are flush.
The invention has the beneficial effects that:
(1) the outer brush head, the middle brush head, the inner brush head and the large gear are fixed together through the main shaft to form the brush head, then the large gear and the small gear are respectively fixed in corresponding mounting grooves, and as the large gear and the small gear are mounted in the same component and have the same mounting reference, the assembly precision of the small gear and the large gear is easy to control, so that the small gear and the large gear are normally meshed.
(2) The left brush rod plastic part and the right brush rod plastic part can be fixed into a whole in a welding or glue mode, and the large gear and the small gear are respectively embedded in the first mounting groove and the second mounting groove; the brush head is embedded into the first mounting groove through the gear wheel to be connected with the brush handle rod, the outer side wall of the first mounting groove is supported on the boss of the gear wheel, and the boss of the gear wheel is thicker than the brush shaft, so that the brush head is larger in supporting area, and has better bearing capacity and service life. Even if the wear occurs after long-term use, the sliding teeth or broken teeth at the meshing part can not be caused. The problem that the brush head is scrapped due to the fact that the brush shaft and the brush rod are abraded due to long-time rotation of the original scheme is solved.
(3) The tail end of the bristle bundle adopts the scalding process, so that the bristles are firmer and are not easy to fall off. In addition, the copper sheet can be made into a special shape, the dilemma that the hair planting holes can only be in a round hole shape when the copper sheet is planted with hair is eliminated, and the hair planting density can be increased.
Drawings
Fig. 1a is a schematic view showing a structure of a conventional electric toothbrush.
FIG. 1b is a perspective assembly view of a prior art electric toothbrush.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a perspective assembly view of the head and handle.
Fig. 4 is a schematic view of the structure of the brush head and the brush handle.
Figure 5 is a perspective assembly view of bristle tufts and plastic head parts in either an inside or outside head.
FIG. 6 is a rear view of bristle tufts and plastic part of a brush head in an inside or outside brush head
Description of reference numerals: 1. a drive shaft; 2. a decorative sleeve; 3. a brush handle rod; 4. a left brush holder plastic part; 5. a right brush rod plastic part; 6. a pinion gear; 7. a main shaft; 8. a bull gear; 9. an inner side brush head; 10. a middle brush head; 11. an outer brush head; 12. a brush head plastic part; 13. and (4) a bristle bundle.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the attached drawings, the electric toothbrush comprises a brush head, a brush handle rod 3 and a mounting structure for connecting the brush head and the brush handle rod, wherein the axial lead of the brush head is perpendicular to the axial lead of the brush handle rod, a decorative sleeve 2 is mounted at the bottom of the brush handle rod 3, a power source is arranged inside the brush handle rod 3, the power output end of the power source is connected with a transmission shaft 1, and a small gear 6 is arranged at the shaft end of the transmission shaft 1; the brush head comprises an outer brush head 11, a middle brush head 10 and an inner brush head 9 which are sequentially arranged on the main shaft, the outer brush head 11 and the inner brush head 9 are oppositely arranged, one side close to the brush handle rod 3 is taken as the inner side, and the other side is taken as the outer side; the inner side of the inner side brush head 9 is provided with a gearwheel 8, and the gearwheel 8, the outer side brush head 11, the middle brush head 10 and the inner side brush head 9 are pressed on the main shaft 7 together; the top of the brush handle rod 3 is provided with a mounting structure, the mounting structure comprises a left brush rod plastic part 4 and a right brush rod plastic part 5 which are arranged in a left-right split mode, and the left brush rod plastic part 4 and the right brush rod plastic part 5 are buckled with each other to form a first mounting groove and a second mounting groove which are corresponding to the shapes of the large gear 8 and the small gear 9; when the left brush rod plastic part 4 and the right brush rod plastic part 5 are buckled, the large gear 8 and the small gear 6 are respectively embedded in the first mounting groove and the second mounting groove, and the outer side wall of the first mounting groove is supported on a boss of the large gear 8; the first mounting groove and the second mounting groove restrain the large gear 8 and the small gear 6 to rotate only and cannot move axially, the small gear 6 and the large gear 8 are in meshed transmission, and the brush head is embedded into the first mounting groove through the large gear 6 and is connected with the brush handle rod 3.
In the embodiment, the structures of the outer side brush head 11 and the inner side brush head 9 are consistent, and both the outer side brush head 11 and the inner side brush head 9 comprise a brush head plastic part 12 and a plurality of bristle bundles 13 arranged on the brush head plastic part 12, the brush head plastic part 12 is in a circular truncated cone structure, the interior of the circular truncated cone structure is hollow, the bottom of the circular truncated cone structure is open, and a plurality of planting holes are formed in the side surface of the circular truncated cone structure at intervals along the circumferential direction; each bristle bundle 13 obliquely passes through the planting holes by means of air flow, and the tail ends of each bristle bundle 13 are intersected at the central axis of the brush head plastic part in the circular truncated cone structure after passing through the planting holes; the tail ends of the adjacent bristle bundles are heated and melted into an integrated annular fixing piece through the heating welding head, so that the bristles are firmer and are not easy to fall off. Because the bristle bundle 13 passes through the hair planting hole by means of air flow, the problem that the hair planting hole can only be in a round hole shape when the copper sheet is planted with hair in the prior art is solved, and the hair planting hole can be an oval hole, a triangular hole, a square hole, a rhombic hole or a special-shaped hole. The front face of each bristle bundle may be either flush or wavy to provide better rotational cleaning of the tooth surface.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (5)
1. An electric toothbrush comprises a brush head, a brush handle rod and a mounting structure for connecting the brush head and the brush handle rod, wherein the axis of the brush head is perpendicular to the axis of the brush handle rod; the brush head comprises an outer brush head, a middle brush head and an inner brush head which are sequentially arranged on the main shaft, the outer brush head and the inner brush head are oppositely arranged, one side close to the brush handle rod is taken as the inner side, and the other side is taken as the outer side; the method is characterized in that: the inner side of the inner side brush head is provided with a gearwheel, and the gearwheel, the outer side brush head, the middle brush head and the inner side brush head are assembled on the main shaft together; the top of the brush handle rod is provided with an installation structure, the installation structure comprises a left brush rod plastic part and a right brush rod plastic part which are arranged in a left-right split mode, and the left brush rod plastic part and the right brush rod plastic part are buckled with each other to form a first installation groove and a second installation groove which correspond to the shapes of the large gear and the small gear; when the left brush rod plastic part and the right brush rod plastic part are buckled, the large gear and the small gear are respectively embedded in the first mounting groove and the second mounting groove, and the outer side wall of the first mounting groove is supported on the boss of the large gear; the first mounting groove and the second mounting groove respectively restrain the large gear and the small gear to rotate only and cannot move axially, the small gear is in meshed transmission with the large gear, and the brush head is embedded into the first mounting groove through the large gear to be connected with the brush handle rod.
2. The electric toothbrush of claim 1, wherein: the structure of outside brush head, inboard brush head is unanimous, all includes brush head working of plastics and sets up a plurality of brush hair bundles on brushing the head working of plastics, is equipped with a plurality of holes of planting along circumference interval on the brush head working of plastics, and each brush hair bundle passes with the help of the air current slant and plants the hole, and the tail end of each brush hair bundle crosses in brush head working of plastics central axis department after passing and planting the hole, and the tail end of adjacent brush hair bundle is through heating the melting ring form stationary blade of an organic whole formation.
3. An electric toothbrush according to claim 2, wherein: the brush head plastic part is of a circular truncated cone structure, the inside of the circular truncated cone structure is hollow, the bottom of the circular truncated cone structure is open, a plurality of plant pores are formed in the side face of the circular truncated cone structure at intervals along the circumferential direction, the circular fixing piece is located inside the circular truncated cone structure, and the bottom of the circular truncated cone structure is open and provided with a bottom cover.
4. An electric toothbrush according to claim 3, wherein: the planting holes are circular holes, elliptical holes, triangular holes, square holes, rhombic holes or special-shaped holes.
5. An electric toothbrush according to claim 4, wherein: the front end surfaces of the bristle bundles are flush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719156.5A CN113288489A (en) | 2021-06-28 | 2021-06-28 | Electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719156.5A CN113288489A (en) | 2021-06-28 | 2021-06-28 | Electric toothbrush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113288489A true CN113288489A (en) | 2021-08-24 |
Family
ID=77329768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110719156.5A Pending CN113288489A (en) | 2021-06-28 | 2021-06-28 | Electric toothbrush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113288489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115211991A (en) * | 2022-08-18 | 2022-10-21 | 江苏三笑集团有限公司 | Intelligent electric toothbrush assembly |
-
2021
- 2021-06-28 CN CN202110719156.5A patent/CN113288489A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115211991A (en) * | 2022-08-18 | 2022-10-21 | 江苏三笑集团有限公司 | Intelligent electric toothbrush assembly |
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