CN211187610U - Multifunctional oral nursing brush and brush head thereof - Google Patents

Abstract

The utility model relates to a multifunctional oral nursing brush and brush head, the brush head comprises two groups of brush hairs rotating oppositely, each group of brush hairs is driven to rotate by the middle brush rod, each group of brush hairs comprises a plurality of brush boards arranged along the circumferential direction of the brush rod, each brush board comprises an upper brush board and a lower brush board, two side surfaces of the upper brush board and the lower brush board both present a certain cambered surface structure or a straight surface structure, the contact parts of the upper brush board and the lower brush board and the brush rod are formed with a front contact line and a rear contact line, any one of the two contact lines can be a parabolic structure with a certain radian or a structure formed by two crossed straight lines; the upper brush plate and the lower brush plate are respectively provided with an upper notch and a lower notch, and the joint of the upper brush plate and the lower brush plate is provided with a middle notch. The utility model provides a multi-functional oral care brush and brush head thereof, than the existing brush head device, clean effect is better, elasticity is better, long service life, and difficult noise that produces.

Description

Multifunctional oral nursing brush and brush head thereof

Technical Field

The utility model relates to a cleaning means, concretely relates to multi-functional oral care brush and brush head.

Background

Tooth brushing has become one of the daily necessities of people, is an important oral health care method, and with the advancement of the living standard, a plurality of novel tooth brushing tools appear in the market, however, the tools have various defects:

1. at present, brush heads of most nursing brushes are made of nylon filament brush hairs, so that the nursing brushes are high in hardness and large in size, and are easy to damage gingiva in the using process, so that gingival bleeding is caused, and periodontal diseases are caused.

2. The brush head structure of the existing electric nursing brush is very single, and the arrangement of the brush hair does not consider the detail environment in the oral cavity, so that thorough and effective cleaning can not be realized during cleaning.

3. The existing medical apparatus for cleaning oral cavity mostly adopts a cleaning sterilizer to clean the patient, the cleaning sterilizer is structurally characterized in that a plunger is arranged on a container, water is sprayed in the oral cavity of the patient through the reciprocating motion of the plunger, in order to achieve the purpose of sterilization, a proper amount of disinfectant is generally added into clear water, and the cleaning sterilizer has the following defects: firstly, the pressure of the sprayed water flow is not easy to guarantee, when the pressure is high, the gum can be turned outwards or torn, if the pressure is too low, impurities in the oral cavity can be left in the slits between the teeth, and the cleaning effect is poor; secondly, the operation is inconvenient; thirdly, the occupied area is large, which is not beneficial to carrying, placing and sterilizing.

4. The existing oral cleaning tool mostly adopts stick-shaped bristles to clean the oral cavity, the structure is easy to damage teeth, in the cleaning process, the generated noise is high, and the roll-shaped brush rod is easy to touch the teeth.

In summary, the existing oral cleaning tools all have the defects of single function, complex structure, inconvenient use and easy damage to the health of the gum.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a brush head, which comprises two groups of brush hairs which rotate oppositely, each group of brush hairs is driven by a brush rod at the middle part to rotate, wherein,

each group of bristles comprises a plurality of brush plates arranged along the circumferential direction of the brush rod, each brush plate comprises an upper brush plate and a lower brush plate, two side surfaces of the upper brush plate and the lower brush plate are of a certain cambered surface structure or a certain straight surface structure, a front contact line and a rear contact line are formed at the contact parts of the upper brush plate and the lower brush plate and the brush rod, and any one of the two contact lines can be of a parabolic structure with a certain radian or a structure formed by two crossed straight lines; wherein, the included angle between the tangent line of the straight line or the parabola and the horizontal line is between 10 and 90 degrees; the upper brush plate and the lower brush plate are respectively provided with an upper notch and a lower notch, and the joint of the upper brush plate and the lower brush plate is provided with a middle notch.

Wherein, the contact part of the upper brush board and the lower brush board with the brush rod forms a parabola structure with a certain radian, and the opening faces to the rotating direction of the brush hair.

Wherein, the contact parts of the upper brush board and the lower brush board and the brush rod form two crossed straight lines, and the openings of the straight lines face the rotating direction of the brush hair.

Wherein, the cross section department on every brush board top all is formed with two outer contour lines, and these two outer contour lines are the pitch arc or the straight line that have certain radian.

Wherein the two outer contour lines have the same or different lengths.

Wherein, on the side face of the top end of each upper brush plate facing to the rotating direction, a chamfer tangent plane cut along the direction vertical to the brush rod is arranged.

Wherein, every is provided with at least one and goes up the opening on the brush board, also is provided with at least one lower opening on every brush board down, and every goes up opening and every lower opening and all is provided with a chamfer tangent plane of cutting out along the direction of perpendicular to brush-holder stud.

The upper gap on each upper brushing plate is different in height in the vertical direction, and the lower gap on each lower brushing plate is different in height in the vertical direction.

The upper gaps on the upper brushing plates are consistent in height in the vertical direction, and the lower gaps on the lower brushing plates are consistent in height in the vertical direction.

Wherein, every upper brush board is from top to bottom, and the horizontal distance of its outside edge and brush-holder stud decreases progressively.

Wherein, in each brush board, the height ratio of the height of the upper brush board in the vertical direction to the height of the lower brush board in the vertical direction is between 1: 4-3: 4.

in each brush plate, the upper gap and the lower gap are cut along the positions from one quarter to one half of the upper brush plate to the lower brush plate in the circumferential direction.

Wherein the number of the brush plates on each group of brush hairs is between 2 and 10.

The utility model provides a multi-functional oral care brush in addition, include:

the nursing brush body is internally provided with a driving mechanism;

the nursing brush handle is detachably connected with the nursing brush body, and a transmission mechanism which is matched and connected with the driving mechanism is arranged in the nursing brush handle;

wherein the nursing brush handle is provided with the brush head.

The transmission mechanism comprises a driving brush rod and a driven brush rod which are parallel to each other, and the bottom end of the driving brush rod is connected with the driving mechanism in a matching way;

two groups of bristles on the brush head are respectively arranged around the top ends of the two groups of brush rods;

the driving brush rod and the driven brush rod are meshed through a gear, so that two groups of bristles are transversely and inwards rotated in 360 degrees relatively.

The multifunctional oral care brush further comprises a recoil plate, wherein the recoil plate is arranged on the rear side of the brush head and is integrally formed with the care brush handle through an inclined plate.

In the brush head, the height of the middle gap on each brush plate is lower than the height of the recoil plate.

The utility model provides a multi-functional oral care brush and brush head thereof, than the existing brush head device, clean effect is better, elasticity is better, long service life, and difficult noise that produces.

Drawings

FIG. 1: the utility model provides a structural schematic diagram of a multifunctional oral nursing brush.

FIG. 2: the utility model provides a part side view of multi-functional oral care brush.

FIG. 3: the utility model discloses the stereogram of the brush head that multi-functional oral care brush used.

FIG. 4: the utility model discloses the front view of the brush head that multi-functional oral care brush used.

FIG. 5: the front view of one of the brush hairs in the brush head of the utility model.

FIG. 6: the front view of one of the brush hairs in the brush head of the utility model.

FIG. 7: the front view of one of the brush hairs in the brush head of the utility model.

FIG. 8: the utility model discloses a top view of brush head.

FIG. 9: the utility model discloses the stereogram of the brush head that multi-functional oral care brush used.

Description of the reference numerals

10-nursing brush body, 20-driving mechanism, 30-nursing brush handle, 41-driving brush rod, 42-driven brush rod, 50-recoil plate and 60-brush hair;

70-brush plate, 71-upper brush plate, 711-upper gap, 712& 713-outer contour line, 72-lower brush plate, 721-lower gap, 73-middle gap, 74-chamfer tangent plane.

Detailed Description

In order to further understand the technical solution and the advantages of the present invention, the following detailed description will be made with reference to the accompanying drawings.

Fig. 1 is the utility model provides a structural schematic diagram of multi-functional oral care brush, as shown in fig. 1, the utility model provides a multi-functional oral care brush mainly includes:

a nursing brush body 10, the interior of which is provided with a driving mechanism 20;

the nursing brush handle 30 is detachably connected with the nursing brush body 10, and a transmission mechanism which is matched and connected with the driving mechanism 20 is arranged in the nursing brush handle;

the transmission mechanism comprises a driving brush rod 41 and a driven brush rod 42 which are parallel to each other, and the bottom end of the driving brush rod 41 is connected with the driving mechanism 20 in a matching way;

two groups of bristles 60 are arranged at the top ends of the driving brush rod 41 and the driven brush rod 42, which are positioned outside the nursing brush holder 30, and the driving brush rod 41 and the driven brush rod 42 are meshed through gears, so that the two groups of bristles 60 are oppositely rotated in 360 degrees transversely.

Fig. 2 is the partial side view of the multi-functional oral care brush provided by the utility model, as shown in fig. 2, the utility model discloses in addition in brush head rear side, nursing brush holder 30's upper end setting and nursing brush holder 30 integrated into one piece's recoil board 50, the top of recoil board 50 is less than the top of two sets of brush hairs 60, the width of recoil board 50 is less than the outside width that two sets of brush hairs 60 set up side by side. The arrangement of the structure can prevent the back flushing plate 50 from shielding the cleaning operation of the brush hair 60 on teeth or tongue coating on one hand; on the other hand, when the brush hairs 60 rotate, the driven water flow impacts the recoil plate 50, and after the water flow recoils through the recoil plate 50, the position cleaned by the brush hairs 60 is washed, so that the oral cavity is further cleaned.

Fig. 3 and 4 are the perspective view and the front view of the brush head used by the multifunctional oral care brush of the present invention, as shown in fig. 3 and 4, the brush head of the present invention includes two sets of opposite rotation bristles 60, each set of bristles 60 is rotated by the brush rod in the middle of the brush head (i.e., the driving brush rod 41 and the driven brush rod 42), fig. 5 is the front view of one of the bristles in the brush head of the present invention, the detailed structure of the brush bristles is described below by taking this as an example, and the structure of the other brush bristles is symmetrical.

As shown in fig. 5, each group of bristles 60 includes a plurality of brush plates 70 arranged along the circumferential direction of the brush rod, each brush plate 70 includes an upper brush plate 71 and a lower brush plate 72, both side surfaces of the upper brush plate 71 and the lower brush plate 72 exhibit a certain arc structure, and the contact lines of the contact portions of the upper brush plate 71 and the lower brush plate 72 with the brush rod form a parabolic structure having an opening with a certain arc facing the rotation direction of the bristles 60, specifically, since the brush plate 70 has a certain thickness, for an actual product, the contact portions of the upper brush plate 71 and the lower brush plate 72 with the brush rod substantially form two contact lines, which are the intersection lines of the front and rear side surfaces of the brush plate 70 with the brush rod, in this embodiment, both of the intersection lines exhibit a parabolic structure having an opening facing the rotation direction of the bristles 60, that is, for the upper brush plate 71, the position of which gradually inclines backward from the top end to the bottom end along the rotation direction of the bristles 60, accordingly, the lower brush plate 72 is gradually inclined backward from the bottom end to the top end in the rotation direction of the brush bristles 60, so that both side surfaces of the lower brush plate 72 are simultaneously twisted to form a certain arc. Thus, in brushing teeth, taking the upper brush plate 71 as an example, the previous upper brush plate 71 smoothly contacts the tooth surface from the top end to the bottom end with the rotation of the brush rod, and when the previous upper brush plate 71 is separated from the tooth surface, the next upper brush plate 71 smoothly contacts the tooth surface from the top end to the bottom end; accordingly, taking the lower brush plate 72 as an example, the previous lower brush plate 72 smoothly contacts the tooth surface from the bottom end to the top end thereof with the rotation of the brush bar, and the next lower brush plate 72 smoothly contacts the tooth surface from the bottom end to the top end thereof immediately after the previous lower brush plate 72 is separated from the tooth surface; so, in the process of brushing teeth, the different positions of brush plate 70 contact the tooth surface all the time, compare prior art through setting up the structure that the multiunit brush hair cleaned the tooth in proper order, have following apparent advantage: 1. because the teeth are always contacted with the corresponding brush plates, the noise generated in the alternative process of different brush hairs in the prior art is avoided, and the full and effective cleaning is ensured; 2. the whole brush plate replaces the brush hair in the prior art, so that the elasticity of the whole brush hair structure is improved, the damage to teeth is reduced, and the service life of the brush head is prolonged.

In actual production, based on different application scenarios or the requirement for simplifying the processing technology, two side surfaces of the upper brush plate and the lower brush plate of each brush plate can be set to be straight surface structures, that is, the upper brush plate and the lower brush plate of each brush plate are flat plates in the actual sense, in this case, intersecting lines of the upper brush plate and the lower brush plate with the brush rod are two straight lines, specifically, for the upper brush plate, two straight lines intersecting the brush rod are provided, one straight line is a straight line formed by intersecting an inner side surface of the upper brush plate facing the rotation direction of the brush bristles with the brush rod, and the other straight line is a straight line formed by intersecting an outer side surface of the upper brush plate deviating from the rotation direction of the brush bristles with the brush rod; the lower brush plate is also the same as the upper brush plate, and the upper brush plate is opposite to the lower brush plate in the inclined direction, so that two straight lines formed by the intersection of the upper brush plate, the lower brush plate and the brush rod are intersected to finally form two contact lines, the two contact lines are formed by the two intersected straight lines, and the openings of the two intersected straight lines face the rotating direction of the brush bristles.

In addition, in the case of the brush plate being set as a cambered surface structure, the brush plate and the brush rod form a tangent line which is different from the horizontal line, the utility model discloses the limited 10-90 degrees, the number of the contact lines which can be adjusted according to the number of the brush plates can be adjusted according to the number of the contact lines, the number of the brush plates can be adjusted according to the number of the contact lines which are larger than the number of the contact lines which are formed by the brush plate, the number of the brush plates can be adjusted according to the number of the contact lines which are larger than the number of the brush plates, and the number of the brush plates can be adjusted according to the number of the brush plates which are larger than the number of the contact lines which are formed by the brush plate, so that the included angles between the tangent line of the outer ends of the upper brush plate and the lower brush plate and the horizontal line are smaller than the included angles between the tangent line of the lower brush plate and the horizontal line, thereby facilitating understanding of the tangent line of the parabolic line or between the straight line and the horizontal line of the linear line defined by the utility model, L being the horizontal line as the included angles between the horizontal line and the horizontal line (which is perpendicular to the brush rod).

Referring to fig. 5 and fig. 3, in the present invention, a chamfer section 74 cut along a direction perpendicular to the brush rod is disposed on a side of the top end of each upper brush plate facing the rotation direction, and it should be noted that since the upper brush plate 71 has a certain radian, when the top end is cut along the direction perpendicular to the brush rod, the cut chamfer section 74 is not a plane perpendicular to the brush rod, but a chamfer section 74 having a certain inclination with respect to the brush rod, but the chamfer section 74 is closer to the brush rod direction and is more perpendicular to the brush rod. In addition, each brush plate 70 of the present invention, from top to bottom, has a horizontal distance between the outer edge thereof and the brush rod gradually decreased and then gradually increased, so that the outer contour line of each group of bristles 60 has a parabolic structure with an opening deviating from the brush rod along the circumferential direction of the brush rod; or, the upper brush plate 71 shows a descending trend, the lower brush plate 72 is basically kept stable, so that the topmost end of the brush plate 70 has the widest outer contour, and the chamfer section 74 has the function of pushing the chamfer section 74 into the slit of the teeth when cleaning the oral cavity, so that dirt in the slit of the teeth can be removed similarly to toothpicks, in addition, the structure that the outer contour of the upper brush plate 71 is gradually reduced from top to bottom also avoids the defect that the brush rod is easy to touch the teeth when the existing roller-shaped toothbrush is used for brushing the teeth, because the topmost end of the upper brush plate 71 is arranged to be widest, the brush rod is far away from the tooth surface, the experience of touching the teeth can not be generated, and when brushing the teeth, the cleanliness of the upper brush plate 71 is gradually reduced from the upper end to the lower end along with the rotation of the brush plate 70, so that the top end part of the upper brush plate 71 plays a.

As shown in fig. 5, the upper brush plate 71 and the lower brush plate 72 of the present invention are respectively provided with an upper opening 711 and a lower opening 721, the upper opening 711 and the lower opening 721 both include two side surfaces, and one of the side surfaces of the upper opening 711 and the lower opening 721 is the same as the above-mentioned chamfer cut surface 74, and is also cut along a direction perpendicular to the brush rod (as indicated by the section a in fig. 4, it is clearly visible here), so that the upper opening 711 and the lower opening 721 are both corresponding to a small "chamfer cut surface", so that each of the upper opening 711 and the lower opening 721 also has the function similar to a toothpick.

In addition, as shown in fig. 5, a middle gap 73 is formed at the joint of the upper brush plate 71 and the lower brush plate 72, so that the generated toothpaste foams can be collected from the upper side and the lower side to the middle under the action of the upper brush plate 71 and the lower brush plate 72 respectively and collected into the middle gap 73 in the process of brushing teeth, because the two side surfaces of the upper brush plate 71 and the lower brush plate 72 on the same brush plate 70 are both converged toward the bristle rotating direction, and meanwhile, the arc-shaped openings of the two brush plates 70 on the bristles 60 rotating with the object are opposite to each other, a converging effect is also generated, so that the toothpaste foams in the side surfaces of the upper brush plate 71 and the lower brush plate 72 facing the bristle rotating direction are also converged toward the joint of the two; after the polymerization, under the rotatory centrifugal force effect that produces of brush hair 60, the toothpaste foam is got rid of to recoil plate 50 by last brush board 71 and lower brush board 72 handing-over department, under the impact of recoil plate 50, produces better washing effect, from this, the utility model discloses an go up the structure setting of the special arcwall face of brush board, lower brush board, the opening orientation setting of special arcwall face to and the setting of special three group's openings, the setting of cooperation recoil plate has simultaneously greatly improved the foam making function of toothpaste, thereby has greatly increased the clean effect of brush hair.

In order to ensure that the toothpaste foam at the middle gap 73 can be smoothly hit on the recoil plate 50, the utility model discloses the better sets up that the middle gap 73 on each brush plate 70 is located highly to be less than the height of the recoil plate 50.

In the present invention, in order to ensure that the toothpaste foam can be smoothly collected at the junction between the upper brush plate 71 and the lower brush plate 72 in each brush plate 70, the toothpaste foam on the upper brush plate 71 has its own gravity, so that the height of the upper brush plate 71 in the vertical direction should be smaller than the height of the lower brush plate 72 in the vertical direction when setting up, so that the upper brush plate 71 provides less force to the toothpaste foam than the lower brush plate 72 can provide, otherwise, if the heights of the two are equal, the toothpaste foam tends to be collected at a certain position of the lower brush plate 72; the utility model discloses the best setting is gone up brush board 71 and is in the ascending height ratio in vertical direction of vertical direction and lower brush board 72 and be in 1: 4-3: 4, preferably 1: 2, the impact force on the upper and lower toothpaste foams approaches to balance, so that the toothpaste foams smoothly collect at the middle gap 73.

The utility model discloses in, in every brush board 70, go up opening 711 and lower opening 721 preferred and all follow brush board 71 and brush board 72 fourth to half down in week, the cutting of the position department that the preferred is the third particularly to the crossing point of opening and brush board 70 is the standard, and the width at intersection to the opening edge occupies approximately the third of the brush board 70 width of intersection place cross section, so sets up, can ensure that brush board 70 remains sufficient elasticity.

Please refer to fig. 6, in comparison with fig. 5, the positions of the upper gap 711 and the lower gap 721 on the same brush plate 70 are marked with thick lines in fig. 6, as shown, the upper gap 711 and the lower gap 721 on the same brush plate 70 are staggered in the vertical direction; thus, the impact force can be staggered, so that the toothpaste foam is uniformly distributed at the joint of the upper brush plate 71 and the lower brush plate 72.

In addition, please refer to fig. 7, compare fig. 5, the present invention uses black dots to mark the positions of the upper gap 711 and the lower gap 721 on different brush plates 70 in fig. 7, as shown in the figure, the height of the upper gap 711 on each upper brush plate 71 in the vertical direction is not consistent, and the height of the lower gap 721 on each lower brush plate 721 in the vertical direction is not consistent. Due to the arrangement, on the basis that the upper gaps 711 and the lower gaps 721 are alternately arranged, the distance between each upper brushing plate 71 and each lower brushing plate 72 can be reduced as much as possible, so that each upper brushing plate 71 and each lower brushing plate 72 can be smoothly transited in the process of cleaning the oral cavity, and the generation of 'toggle' noise is avoided, and in the transition process, different brushing plates clean different parts of teeth through respective gaps, so that the defect that one part of the teeth is excessively cleaned and other parts are not cleaned under the condition that the positions of the gaps are the same is avoided, and the cleaning effect is more uniform; in addition, the staggered structure can also play a very good cleaning role for uneven tooth surfaces. For the brush plate provided with a plurality of upper openings and a plurality of lower openings, the upper openings and the lower openings which are not arranged on the brush plate can be arranged to be distributed in a staggered manner, so that the same technical effect is realized.

Of course, the utility model provides an above-mentioned restriction also can not be done to the position of each opening, in order to simplify processing technology, also can all set up opening and each opening down the ascending height of vertical side into unanimity respectively, perhaps, set up opening and the position of opening down in vertical side on same brush board into overlapping, all above.

Fig. 8 is a top view of the brush head of the present invention, as shown in fig. 8, wherein two outer contour lines, shown as outer contour line 712 and outer contour line 713, are formed at the cross section of the top end of each upper brush plate 71, wherein the arc of the outer contour line 712 facing in the direction of rotation is smaller than the arc of the outer contour line 713 facing away from the direction of rotation; thus, the outer contour line 712 is arranged to be steeper in the process of rotation because it directly contacts the tooth surface, so that a structure similar to a scraper is formed, the cleaning force on the tooth surface can be increased, the cleaning effect can be improved, and the outer contour line 713 is not directly contacted with the tooth surface, so that the arrangement is smoother, the structural elasticity of the whole brush board can be improved, and the structural stability of the brush board can be maintained; of course, in practical settings, the two contour lines may be set to have equal lengths or radians, or the radian of the outer contour line 712 may be set to be greater than the radian of the outer contour line 713, which is not limited by the present invention; it should be noted that the intersection of the outer contour line 712 with the outer contour line 713 also presents a smoothly transitioning corner, rather than a sharp corner.

In addition, in practical implementation of the present invention, the two outer contour lines formed at the cross section of the top end of each upper brush plate 71 may be straight lines, and similarly, the length, the angle, and the like of the two straight lines may be equal to each other, or the straight line on one side facing the rotation direction may be steeper than the straight line on one side facing the rotation direction.

Referring to fig. 3 and 4, the bristles 60 rotating in opposite directions are symmetrical in structure, so that the arc openings of the brush plates 70 of the bristles 60 are opposite in direction during the rotation in opposite directions, thereby collecting the toothpaste.

It should be noted that the brush bristles used in the oral care brush of the present invention can be used not only in oral cleaning tools, but also in any devices requiring the same technical effect.

The utility model has the advantages as follows:

1. the whole brush plate replaces the existing stick-shaped brush hair, so that the elasticity of the whole brush hair structure is improved, the damage to teeth and the noise generated in the cleaning process are reduced, and the service life of the brush head is prolonged.

2. Through the structure setting of the special arcwall face of last brush board, lower brush board, the opening orientation setting of special arcwall face to and the setting of three special group openings, the setting of cooperation recoil board has greatly improved the foam function of making of toothpaste simultaneously, thereby has greatly increased the clean effect of brush hair.

3. Through the special outer contour variation trend of the brush plate and the arrangement of the chamfer section, the defect that the brush rod is easy to touch teeth when the existing roller-shaped toothbrush is used for brushing teeth is avoided.

Although the present invention has been described with reference to the above preferred embodiments, it is not intended to limit the scope of the present invention, and various changes and modifications relative to the above embodiments may be made by those skilled in the art without departing from the spirit and scope of the present invention.

Claims (17)

1. A brush head is characterized in that: comprises two groups of bristles which rotate oppositely, each group of bristles is driven to rotate by a brush rod at the middle part of each group of bristles, wherein,

each group of bristles comprises a plurality of brush plates arranged along the circumferential direction of the brush rod, each brush plate comprises an upper brush plate and a lower brush plate, two side surfaces of the upper brush plate and the lower brush plate are of cambered surface structures or straight surface structures, a front contact line and a rear contact line are formed at the contact parts of the upper brush plate and the lower brush plate and the brush rod, and any one of the two contact lines can be of a parabolic structure with a certain radian or a structure formed by two crossed straight lines; wherein, the included angle between the tangent line of the straight line or the parabola and the horizontal line is between 10 and 90 degrees; the upper brush plate and the lower brush plate are respectively provided with an upper notch and a lower notch, and the joint of the upper brush plate and the lower brush plate is provided with a middle notch.

2. The brushhead of claim 1, wherein: the contact parts of the upper brush board and the lower brush board and the brush rod form a parabola structure with a certain radian, and the opening faces to the rotating direction of the brush hair.

3. The brushhead of claim 1, wherein: the contact parts of the upper brush plate and the lower brush plate and the brush rod form two crossed straight lines, and the openings of the straight lines face the rotating direction of the brush hairs.

4. The brushhead of claim 1, wherein: the cross section department at every upper brush board top all is formed with two outer contour lines, and these two outer contour lines are the pitch arc or the straight line that have certain radian.

5. The brushhead of claim 4, wherein: the two outer contour lines may be the same or different in length.

6. The brushhead of claim 1, wherein: the side surface of the top end of each upper brush plate facing to the rotating direction is provided with a chamfer tangent plane cut along the direction vertical to the brush rod.

7. The brushhead of claim 1, wherein: each upper brushing plate is provided with at least one upper opening, each lower brushing plate is also provided with at least one lower opening, and each upper opening and each lower opening are respectively provided with a chamfer section cut along the direction vertical to the brushing rod.

8. The brushhead of claim 1, wherein: the upper gap on each upper brushing plate is different in height in the vertical direction, and the lower gap on each lower brushing plate is different in height in the vertical direction.

9. The brushhead of claim 1, wherein: the upper gaps on each upper brushing plate are consistent in height in the vertical direction, and the lower gaps on each lower brushing plate are consistent in height in the vertical direction.

10. The brushhead of claim 1, wherein: each upper brush plate is from top to bottom, and the horizontal distance between the outer edge of each upper brush plate and the brush rod is gradually reduced.

11. The brushhead of claim 1, wherein: in each brush plate, the ratio of the height of the upper brush plate in the vertical direction to the height of the lower brush plate in the vertical direction is between 1: 4-3: 4.

12. the brushhead of claim 1, wherein: in each brush plate, the upper gap and the lower gap are cut along the positions from one quarter to one half of the upper brush plate and the lower brush plate in the circumferential direction.

13. The brushhead of claim 1, wherein: the number of the brush plates on each group of brush hair is 2-10.

14. A multi-functional oral care brush, comprising:

the nursing brush body is internally provided with a driving mechanism;

the nursing brush handle is detachably connected with the nursing brush body, and a transmission mechanism which is matched and connected with the driving mechanism is arranged in the nursing brush handle;

wherein the care handle is provided with a brush head according to any one of claims 1-13.

15. The multi-functional oral care brush of claim 14, wherein:

the transmission mechanism comprises a driving brush rod and a driven brush rod which are parallel to each other, and the bottom end of the driving brush rod is connected with the driving mechanism in a matching way;

two groups of bristles on the brush head are respectively arranged around the top ends of the two groups of brush rods;

the driving brush rod and the driven brush rod are meshed through a gear, so that two groups of bristles are transversely and inwards rotated in 360 degrees relatively.

16. The multi-functional oral care brush of claim 14, wherein: the multifunctional oral care brush further comprises a recoil plate, wherein the recoil plate is arranged at the rear side of the brush head and is integrally formed with the care brush handle through an inclined plate.

17. The multi-functional oral care brush of claim 16, wherein: in the brush head, the height of the middle gap on each brush plate is lower than that of the recoil plate.

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