阅读说明：本技术 超声波牙刷 (Ultrasonic toothbrush ) 是由 李冬保 郑传周 翁金根 江西 于 2020-07-08 设计创作，主要内容包括：本发明涉及牙刷技术领域,公开一种超声波牙刷,包括手柄以及与手柄可拆卸连接的刷头,刷头包括刷毛、刷毛基座和设有第一腔体的刷杆,刷毛固定于刷毛基座,刷毛基座安装于刷杆的一端；手柄包括具有容纳腔的外壳、安装于容纳腔内的机芯组件和设有第二腔体的轴杆,轴杆包括第一端和第二端,第一端伸入第一腔体内并延伸到刷杆设有刷毛基座的端部,第二端固定于外壳内；超声波牙刷还包括超声波换能器,超声波换能器设于第二腔体内,固定于第一端并与刷毛基座对应设置；机芯组件包括与超声波换能器电连接的电源。本发明提供的超声波牙刷降低了生产成本,刷头易清洗更换,并降低超声波传递过程的能量损耗。(The invention relates to the technical field of toothbrushes, and discloses an ultrasonic toothbrush which comprises a handle and a brush head detachably connected with the handle, wherein the brush head comprises bristles, a bristle base and a brush rod provided with a first cavity, the bristles are fixed on the bristle base, and the bristle base is arranged at one end of the brush rod; the handle comprises a shell with a containing cavity, a core assembly arranged in the containing cavity and a shaft rod with a second cavity, the shaft rod comprises a first end and a second end, the first end extends into the first cavity and extends to the end part of the brush rod provided with the brush hair base, and the second end is fixed in the shell; the ultrasonic toothbrush also comprises an ultrasonic transducer, the ultrasonic transducer is arranged in the second cavity, is fixed at the first end and is arranged corresponding to the bristle base; the movement assembly includes a power source electrically connected to the ultrasonic transducer. The ultrasonic toothbrush provided by the invention has the advantages that the production cost is reduced, the brush head is easy to clean and replace, and the energy loss in the ultrasonic transmission process is reduced.)

1. The ultrasonic toothbrush is characterized by comprising a handle and a brush head detachably connected with the handle, wherein the brush head comprises bristles, a bristle base and a brush rod provided with a first cavity, the bristles are fixed on the bristle base, and the bristle base is arranged at one end of the brush rod;

the handle comprises a shell with a containing cavity, a movement assembly arranged in the containing cavity and a shaft rod with a second cavity, the shaft rod comprises a first end and a second end, the first end extends into the first cavity and extends to the end part of the brush rod, which is provided with the brush hair base, and the second end is fixed in the shell;

the ultrasonic toothbrush also comprises an ultrasonic transducer, and the ultrasonic transducer is arranged in the second cavity, fixed at the first end and arranged corresponding to the bristle base;

The movement assembly comprises a power supply, and the ultrasonic transducer is electrically connected with the power supply.

2. An ultrasonic toothbrush according to claim 1, wherein a sealant is disposed between the ultrasonic transducer and the shaft.

3. An ultrasonic toothbrush according to claim 1, wherein the portion of the shaft to which the ultrasonic transducer is secured is made of a metallic material.

4. The ultrasonic toothbrush of claim 1, wherein said bristle base is made of a metallic material.

5. An ultrasonic toothbrush according to claim 1, wherein the end of the stem at which the bristle base is located is provided with an aperture.

6. An ultrasonic toothbrush according to claim 1, wherein the ultrasonic transducer is a piezoceramic wafer.

7. The ultrasonic toothbrush according to claim 1, wherein the core assembly further comprises a core support, a motor and a control circuit board, the core support divides the accommodating cavity into a third cavity, a fourth cavity and a fifth cavity, the third cavity and the fourth cavity are formed by enclosing the core support, and the fifth cavity is formed by enclosing the core support and the housing;

The power supply is arranged in the third cavity, the motor is arranged in the fourth cavity, the control circuit board is arranged in the fifth cavity and fixed on the machine core bracket, and the ultrasonic transducer, the motor and the power supply are all electrically connected with the control circuit board;

the motor comprises a motor main body and a driving shaft, the driving shaft extends from the motor main body to the direction close to the brush head and is fixed at the second end, and the driving shaft is arranged in the second cavity.

8. The ultrasonic toothbrush of claim 7, wherein the handle further comprises a seal, the seal comprising a cylindrical portion and a dome portion, the cylindrical portion disposed between the shaft and the cartridge holder, the dome portion disposed between the cartridge holder and the housing.

9. The ultrasonic toothbrush of claim 7, further comprising a bottom cover mounted to the housing, wherein a charging coil is disposed on the bottom cover, and the charging coil is electrically connected to the power supply through the control circuit board.

10. The ultrasonic toothbrush according to any one of claims 1 to 9, wherein a locking groove is formed at one end of the brush holder away from the bristle base, the locking groove is formed at the inner side of the brush holder, a protrusion adapted to the locking groove is formed at the outer side of the shaft, and the brush head is mounted on the handle through the locking groove and the protrusion.

Technical Field

The invention relates to the technical field of toothbrushes, in particular to an ultrasonic toothbrush.

Background

With the development of toothbrush technology, electric toothbrushes using ultrasonic transducers for cleaning teeth by high-frequency vibration have been developed, but the existing electric toothbrushes have various disadvantages, such as: in some toothbrushes, the ultrasonic transducers are arranged in the toothbrush head, the coils are respectively arranged on the toothbrush head and the toothbrush handle to control the ultrasonic transducers to generate ultrasonic waves, but the toothbrush head needs to be replaced after being used for a period of time, and the coils and the ultrasonic transducers are replaced together by using the arrangement method, so that the use cost is high and the toothbrush is not environment-friendly; in some toothbrushes, a wire (or a metal contact) mode is adopted to supply power to an ultrasonic generator, the power supply mode limits the replacement of a brush head, has higher requirements on the water resistance of the brush head, and cannot be cleaned at will; in some toothbrushes, an ultrasonic transducer is arranged in a toothbrush handle, so that energy loss is serious in the ultrasonic transmission process, and an ideal vibration effect cannot be achieved; in some toothbrushes, a part of the shell of the brush holder is directly used as a shaft rod for ultrasonic and motor vibration, so that the handle is strong in vibration sense in the use process, and the use effect is poor.

Disclosure of Invention

The invention aims to provide an ultrasonic toothbrush, and aims to solve the technical problems that in the prior art, the cost is high, a toothbrush head is not easy to clean, the energy loss in the ultrasonic transmission process is serious, and the vibration sense of a handle in the use process is strong.

In order to achieve the purpose, the invention provides the following scheme: an ultrasonic toothbrush comprises a handle and a brush head detachably connected with the handle, wherein the brush head comprises bristles, a bristle base and a brush rod provided with a first cavity, the bristles are fixed on the bristle base, and the bristle base is arranged at one end of the brush rod;

the handle comprises a shell with a containing cavity, a movement assembly arranged in the containing cavity and a shaft rod with a second cavity, the shaft rod comprises a first end and a second end, the first end extends into the first cavity and extends to the end part of the brush rod, which is provided with the brush hair base, and the second end is fixed in the shell;

the ultrasonic toothbrush also comprises an ultrasonic transducer, and the ultrasonic transducer is arranged in the second cavity, fixed at the first end and arranged corresponding to the bristle base;

the movement assembly comprises a power supply, and the ultrasonic transducer is electrically connected with the power supply.

Furthermore, a sealing glue is arranged between the ultrasonic transducer and the shaft rod.

Further, a portion of the shaft to which the ultrasonic transducer is fixed is made of a metal material.

Further, the bristle base is made of a metal material.

Furthermore, one end of the brush rod, which is provided with the brush bristle base, is provided with an opening.

Further, the ultrasonic transducer is a piezoelectric ceramic piece.

The movement assembly further comprises a movement bracket, a motor and a control circuit board, the movement bracket divides the accommodating cavity into a third cavity, a fourth cavity and a fifth cavity, the third cavity and the fourth cavity are formed by enclosing the movement bracket, and the fifth cavity is formed by enclosing the movement bracket and the shell;

the power supply is arranged in the third cavity, the motor is arranged in the fourth cavity, the control circuit board is arranged in the fifth cavity and fixed on the machine core bracket, and the ultrasonic transducer, the motor and the power supply are all electrically connected with the control circuit board;

the motor comprises a motor main body and a driving shaft, the driving shaft extends from the motor main body to the direction close to the brush head and is fixed at the second end, and the driving shaft is arranged in the second cavity.

Further, the handle further comprises a sealing element, the sealing element comprises a cylindrical part and a circular table part, the cylindrical part is arranged between the shaft lever and the movement support, and the circular table part is arranged between the movement support and the shell.

Further, the ultrasonic toothbrush further comprises a bottom cover installed on the shell, a charging coil is arranged on the bottom cover, and the charging coil is electrically connected with the power supply through the control circuit board.

Furthermore, a clamping groove is formed in one end, far away from the bristle base, of the brush rod, the clamping groove is formed in the inner side of the brush rod, a protrusion matched with the clamping groove is formed in the outer side of the shaft rod, and the brush head is installed on the handle through the matching of the clamping groove and the protrusion.

The shaft lever can extend into the first cavity by arranging the brush rod with the first cavity; the second cavity is arranged on the shaft lever, the ultrasonic transducer can be fixed in the second cavity, the brush head is detachably connected with the handle, and the ultrasonic transducer does not need to be replaced when the brush head is replaced, so that the cost is saved; the first end through being fixed in the axostylus axostyle with ultrasonic transducer corresponds the setting with the brush hair base, and consequently the ultrasonic energy that ultrasonic transducer produced conveys the brush hair base fast, reduces the energy loss among the ultrasonic transmission process, improves user experience effect. Therefore, the ultrasonic toothbrush provided by the invention has the advantages that the production cost is reduced, the brush head is easy to clean and replace, and the energy loss in the ultrasonic transmission process is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an angled configuration of an ultrasonic toothbrush according to an embodiment of the present invention;

FIG. 2 is a schematic view of another angled configuration of an ultrasonic toothbrush according to an embodiment of the present invention;

FIG. 3 is an exploded schematic view of an ultrasonic toothbrush provided by an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a cross-sectional view of a brush head taken along line A-A in accordance with an embodiment of the present invention;

fig. 6 is a partially enlarged view at B in fig. 4.

The reference numbers illustrate: 100. an ultrasonic toothbrush; 1. a handle; 11. a housing; 111. a third cavity; 112. a fourth cavity; 12. a movement assembly; 121. a power source; 122. a movement bracket; 123. a motor; 1231. a motor main body; 1232. a drive shaft; 124. a control circuit board; 13. a shaft lever; 131. a second cavity; 132. a first end; 133. a second end; 134. a protrusion; 14. a seal member; 141. a cylindrical portion; 142. a circular table portion; 2. a brush head; 21. brushing; 22. a bristle base; 23. a brush bar; 231. a first cavity; 232. a card slot; 233. opening a hole; 3. an ultrasonic transducer; 4. a bottom cover; 5. a charging coil; 6. an LED lamp.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 6, an embodiment of the present invention provides an ultrasonic toothbrush 100, including a handle 1 and a brush head 2 detachably connected to the handle 1, wherein the brush head 2 includes bristles 21, a bristle base 22 and a brush rod 23 having a first cavity 231, the bristles 21 are fixed to the bristle base 22, the bristle base 22 is mounted at one end of the brush rod 23, and the bristle base 22 and the brush rod 23 can be integrally formed; the handle 1 comprises a shell 11 with a containing cavity, a movement assembly 12 arranged in the containing cavity and a shaft 13 provided with a second cavity 131, wherein the shaft 13 comprises a first end 132 and a second end 133, the first end 132 extends into the first cavity 231 and extends to the end of the brush rod 23 provided with the brush base 22, and the second end 133 is fixed in the shell 11; the ultrasonic toothbrush 100 further comprises an ultrasonic transducer 3, wherein the ultrasonic transducer 3 is arranged in the second cavity 131, fixed at the first end 132 and arranged corresponding to the bristle base 22; the movement assembly 12 includes a power source 121, and the ultrasonic transducer 3 is electrically connected to the power source 121.

By arranging the brush rod 23 with the first cavity 231, the shaft rod 13 can extend into the first cavity 231; the second cavity 131 is arranged on the shaft rod 13, the ultrasonic transducer 3 can be fixed in the second cavity 131, the brush head 2 is detachably connected with the handle 1, and the ultrasonic transducer 3 does not need to be replaced when the brush head 2 is replaced, so that the cost is saved; through being fixed in the first end 132 of axostylus axostyle 13 with ultrasonic transducer 3 and the corresponding setting of brush hair base 22, consequently ultrasonic energy that ultrasonic transducer 3 produced conveys brush hair base 22 fast, reduces the energy loss in the ultrasonic transmission process, improves user experience effect. Therefore, the ultrasonic toothbrush 100 provided by the embodiment of the invention reduces the production cost, the brush head 2 is easy to clean and replace, no resource waste is caused, and the energy loss in the ultrasonic transmission process is reduced.

In this embodiment, the one end of brush-holder stud 23 that is far away from bristle base 22 is equipped with draw-in groove 232, and draw-in groove 232 locates the inboard of brush-holder stud 23, and the outside of axostylus axostyle 13 is equipped with the arch 134 with draw-in groove 232 adaptation, and brush head 2 is installed in handle 1 through the cooperation of draw-in groove 232 with arch 134, realizes being connected dismantled of brush head 2 and handle 1. In other embodiments, the end of the brush rod 23 remote from the bristle base 22 is provided with a protrusion 134, and the outer side of the shaft 13 is provided with a locking groove 232 matched with the protrusion 134.

And a sealant is arranged between the ultrasonic transducer 3 and the shaft rod 13. Through this kind of mode of setting, can solve relative motion, area of contact between ultrasonic transducer 3 and the axostylus axostyle 13 little or the big problem in clearance, reduce energy loss, improve ultrasonic wave conduction efficiency. In the embodiment, the sealant can be resin, so that the bonding effect is good, and the transmission efficiency of the vibration energy is high. It can be understood that the sealant can also be made of other materials, and only the good bonding effect and the high transmission efficiency of the vibration energy are ensured.

In this embodiment, the first end 132 of the shaft 13 has no opening, the second end 133 of the shaft 13 has an opening (not shown), and the ultrasonic transducer 3 extends into the second cavity 131 through the opening of the second end 133 and is fixed to the first end 132 of the shaft 13. In other embodiments, the first end 132 may also be provided with an opening, and the ultrasonic transducer 3 is directly installed in the second cavity 131 through the opening of the first end 132, which not only facilitates installation of the ultrasonic transducer 3, but also further shortens the distance between the ultrasonic transducer 3 and the bristle base 22, reduces energy loss, and improves the ultrasonic conduction efficiency. And a sealant is arranged between the ultrasonic transducer 3 and the opening of the first end 132, so that moisture is prevented from flowing into the handle 1 from a gap between the shaft rod 13 and the ultrasonic transducer 3, relative movement between the shaft rod 13 and the ultrasonic transducer 3 is also prevented, and energy loss is reduced.

The shaft may be made of a plastic material. As a preferred embodiment, the portion of the shaft 13 to which the ultrasonic transducer 3 is fixed and the bristle base 22 are made of a metal material. Of course, it is also possible that the entire shaft 13 is made of a metallic material. By this arrangement, the ultrasonic vibration generated by the ultrasonic transducer 3 can be efficiently transmitted to the brush bristles 21, the transmission efficiency of the ultrasonic vibration is improved, and the cleaning effect is remarkably improved. In other embodiments, the first end 132 of the shaft 13 is provided with a metal plate at a location corresponding to the base of the head 2, the metal plate is in contact with the base of the head 2, and the metal plate can be attached to the shaft 13 by any one of ultrasonic, glue, snap fit, or insert molding.

The end of the brush bar 23 at which the bristle base 22 is located is provided with an aperture 233. By providing the opening 233, the ultrasonic energy transmission efficiency is improved. The number of openings 233 may be one, two, three, etc. In this embodiment, three openings 233 are provided, wherein two openings 233 are correspondingly provided at two sides of the brush rod 23, so that the ultrasonic emission at two sides of the brush 21 is balanced, and the cleaning effect is good. It is to be understood that the number and the arrangement position of the openings 233 are not limited to the embodiment and the drawings.

In the present embodiment, the ultrasonic transducer 3 is a piezoelectric ceramic plate.

Referring to fig. 4, the core assembly 12 further includes a core support 122, a motor 123 and a control circuit board 124, the core support 122 divides the accommodating cavity into a third cavity 111, a fourth cavity 112 and a fifth cavity (not shown in the figure), the third cavity 111 and the fourth cavity 112 are enclosed by the core support 122, and the fifth cavity is enclosed by the core support 122 and the housing 11; the power supply 121 is arranged in the third cavity 111, the motor 123 is arranged in the fourth cavity 112, the control circuit board 124 is arranged in the fifth cavity and fixed on the core bracket 122, and the ultrasonic transducer 3, the motor 123 and the power supply 121 are all electrically connected with the control circuit board 124; the motor 123 includes a motor main body 1231 and a driving shaft 1232, the driving shaft 1232 extends from the motor main body 1231 toward the direction close to the brush head 2 and is fixed at the second end 133, and the driving shaft 1232 is disposed in the second cavity 131. By disposing the drive shaft 1232 within the second chamber 131, the motor 123 can drive the shaft 13 to vibrate, thereby driving the bristles 21 disposed on the bristle base 22 to vibrate. Specifically, the motor 123 is a sonic motor, and the control circuit board 124 is a PCBA board.

In the embodiment, the ultrasonic transducer 3 and the acoustic motor form dual drive, the shaft rod 13 transmits vibration to the brush 21, and the acoustic motor drives the brush 21 to realize low-frequency mechanical vibration and repeatedly rub the surface of teeth so as to remove tooth stains and dental plaque on the surface of the teeth, which are easy to clean; the ultrasonic transducer 3 generates high-frequency vibration to enable the water to generate a supercritical cavitation phenomenon, stubborn dental calculus between teeth is removed, and the effect of cleaning teeth and oral cavity is achieved. The ultrasonic wave can directly kill bacteria and block the formation of dental plaque, and can wash the surface of teeth and hidden tartar and tooth stains through cavitated high-energy molecules to achieve the effects of cleaning and protecting teeth. In the embodiment, the vibration of the two frequency bands works respectively or together in a superposed mode, so that the combination of mechanical low-frequency vibration and ultrasonic vibration is achieved, the cleaning force is obviously improved, and deep and all-round tooth cleaning is carried out.

Referring to fig. 4 again, the second end 133 extends into the fourth cavity 112 and is connected to the movement bracket 122 and the housing 11 through the sealing member 14, the sealing member 14 includes a cylindrical portion 141 and a circular table portion 142, the cylindrical portion 141 is disposed between the shaft 13 and the movement bracket 122, and the circular table portion 142 is disposed between the movement bracket 122 and the housing 11. That is, the sealing member 14 can simultaneously seal the gap between the housing 11, the movement bracket 122 and the shaft 13, so as to prevent moisture from flowing into the housing 11 from the top end of the handle 1, and further prevent various components in the handle 1 from being damaged. In this embodiment, the cylindrical portion 141 and the circular table portion 142 are integrally formed, and the sealing member 14 is made of a soft rubber material, so that the vibration transmitted from the shaft 13 to the housing 11 can be reduced, and the vibration of the toothbrush handle 1 during use can be reduced.

The ultrasonic toothbrush 100 further comprises a bottom cover 4 mounted on the housing 11, a charging coil 5 is arranged on the bottom cover 4, and the charging coil 5 is electrically connected with the power supply 121 through the control circuit board 124.

In the present embodiment, the housing 11 of the handle 1 is injection molded from a material having a light shielding effect. Of course, it is also possible to form the housing 11 of a transparent or translucent material and then coat the surface with a paint layer to achieve the light-shielding effect. The surface of the control circuit board 124 is uniformly provided with a plurality of patch type high-brightness LED lamps 6 which emit light independently and do not interfere with each other, and the shell 11 is provided with corresponding through holes or marks (not shown in the figure) with corresponding indicating lamps by laser etching, so that the light of the LED lamps 6 can be emitted out of the handle 1 and seen by a user. The ultrasonic toothbrush 100 is further provided with a switch for turning on or off, and the housing 11 is provided with a through hole (not shown) at a position corresponding to the switch, and the switch is arranged corresponding to the through hole. Perforation and through-hole all are equipped with waterproof seal, and waterproof seal is connected as an organic wholely with shell 11, realize shell 11's inside seal, avoid outside liquid to pass through inside switch, the clearance infiltration shell 11 of 6 departments of LED lamp, have effectively protected motor 123 and electronic components in the shell 11, and safety, reliability are high. The sealing waterproof part corresponding to the switch is provided with a key for starting or closing the switch, and when the key is pressed by a finger, the sealing waterproof part moves downwards under pressure so as to touch the switch corresponding to the sealing waterproof part. The sealing waterproof piece can be transparent or semitransparent sealing waterproof soft rubber, can pass through light generated by the light-emitting element, and has a uniform light effect.

The ultrasonic toothbrush 100 provided by the embodiment of the invention has the advantages of low cost, simple structure, low energy loss, small vibration sense, good waterproof performance and good cleaning effect. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.