CN217828138U - Electric toothbrush head and electric toothbrush with same - Google Patents

Abstract

The utility model discloses an electric toothbrush head and electric toothbrush who has it, include: the toothbrush comprises a toothbrush head body, wherein the toothbrush head body comprises a toothbrush rod part and a toothbrush plate part, the toothbrush rod part comprises a first end and a second end which are opposite in the length direction, the toothbrush plate part is connected to the first end of the toothbrush rod part, the two sides of the thickness of the toothbrush plate part are respectively a front side and a back side, and the deformable angle of the toothbrush head body is less than 10 degrees; the two ends of the length of the brush hair are respectively a root part and a head part, the root part of the brush hair is connected to the brush board part, and the head part of the brush hair extends out from the front side of the brush board part; and a flexible member having a hardness smaller than that of the brush plate portion, the flexible member including at least one of a first flexible portion provided on a back side of the brush plate portion, a second flexible portion provided on a peripheral side of the brush plate portion, and a third flexible portion provided on a front side of the brush plate portion. Therefore, the utility model discloses an electric toothbrush head can transmit the vibration of motor better, and cleaning performance is good, and has better oral cavity protection effect.

Description

Electric toothbrush head and electric toothbrush with same

Technical Field

The utility model belongs to the technical field of the clean technique of oral cavity and specifically relates to an electric toothbrush head and electric toothbrush who has it are related to.

Background

The electric toothbrush is convenient and labor-saving to use, and has good cleaning force, so the electric toothbrush is popular with a plurality of users. Some electric toothbrushes of the related art achieve cleaning of teeth by driving a brush head to vibrate. However, the vibration amplitude is not enough, so that the cleaning strength is poor, and the toothbrush head has high hardness, so that the toothbrush head can touch teeth, gums and the like when vibrating, so that the oral cavity is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide an electric toothbrush head, which can better transmit the vibration of the motor, has good cleaning performance, and has better oral cavity protection effect.

The utility model also provides an electric toothbrush which adopts the electric toothbrush head.

In order to achieve the above object, according to a first aspect of the present invention, there is provided an electric toothbrush head, comprising: the brush head comprises a brush head body, the brush head body comprises a brush rod part and a brush plate part, the brush rod part comprises a first end and a second end which are opposite in the length direction, the brush plate part is connected to the first end of the brush rod part, the two sides of the thickness of the brush plate part are respectively a front side and a back side, and the deformable angle of the brush head body is smaller than 10 degrees; the two ends of the length of each brush hair are respectively a root and a head, the roots of the brush hairs are connected to the brush board part, and the heads of the brush hairs extend out from the front side of the brush board part; a flexible member, the hardness of which is less than the hardness of the brush plate portion, and the flexible member includes at least one of a first flexible portion provided on a back side of the brush plate portion, a second flexible portion provided on a peripheral side of the brush plate portion, and a third flexible portion provided on a front side of the brush plate portion.

According to the utility model discloses an electric toothbrush head can transmit the vibration of motor better, and cleaning performance is good, and has better oral cavity protection effect.

According to some embodiments of the invention, the brush plate portion and the brush rod portion are an integral part, and a sum of a maximum deformation angle of the brush plate portion and a maximum deformation angle of the brush rod portion is less than 10 °.

According to some embodiments of the present invention, the brush plate portion and the brush rod portion are separate pieces, the brush head body further comprises a connecting portion, and the brush plate portion and the brush rod portion are connected through the connecting portion; wherein a sum of a maximum deformation angle of the brush plate portion, a maximum deformation angle of the brush bar portion, and a maximum deformation angle of the connecting portion is less than 10 °.

According to some embodiments of the invention, the connecting portion is located at a back side of the brush plate portion, and the connecting portion and the brush bar portion are integrally formed, a part of the flexible member is located between the connecting portion and the brush plate portion, and connects the connecting portion and the brush plate portion.

According to some embodiments of the invention, the connecting portion is located along a length extending direction of the shaft portion between the blade portion and the shaft portion, and connects the blade portion with the shaft portion.

According to some embodiments of the invention, the flexible member comprises both the first flexible portion and a second flexible portion, and the thickness of the second flexible portion is less than the thickness of the first flexible portion; and/or the flexible piece comprises the first flexible part and a third flexible part at the same time, and the thickness of the third flexible part is smaller than that of the first flexible part.

According to some embodiments of the invention, the thickness of the first flexible portion is less than 1/2 of the thickness of the brush plate portion.

According to some embodiments of the present invention, the flexible member includes both the first flexible portion and the second flexible portion, the first flexible portion extending toward the circumferential side surface of the brush plate portion and being connected to the second flexible portion; and/or the flexible piece comprises the third flexible part and the second flexible part at the same time, and the third flexible part extends to the peripheral side surface of the brush plate part and is connected with the second flexible part.

According to some embodiments of the invention, the flexible member comprises the first flexible portion, the second flexible portion and the third flexible portion at the same time, and completely wraps the brush plate portion except for avoiding the bristles.

According to some embodiments of the present invention, the flexible member includes the first flexible portion, the back surface of the brush rod portion is formed with a groove portion, the flexible member further includes an extension portion, the extension portion is filled in the groove portion and is connected to the first flexible portion.

According to some embodiments of the invention, the width of the groove portion is gradually reduced and then gradually increased along a direction from the brush plate portion to the brush rod portion.

According to some embodiments of the invention, the connection of brush plate portion the cross-sectional area of the one end of brush rod portion is less than the connection of brush rod portion the cross-sectional area of the one end of brush plate portion, the part of flexible piece is located the connection of brush plate portion the one end of brush rod portion, so that the electric toothbrush head is in brush plate portion with the surface smooth transition of the junction of brush rod portion.

According to some embodiments of the invention, the brush plate portion is formed with a mounting hole, the root of the brush hair being located in the mounting hole.

According to some embodiments of the utility model, the positive side surface of brush board portion is formed with a plurality of annular protrudingly, the bellied inner ring of annular forms the mounting hole, the flexible piece includes the third flexible portion, be formed with on the third flexible portion and dodge the bellied hole of dodging of annular, the thickness of third flexible portion is not more than the bellied height of annular.

According to some embodiments of the invention, the height of the annular protrusion does not exceed 2mm; and/or the annular bulge is soft.

According to some embodiments of the invention, the mounting hole is a through hole, the root of the bristle is hot-melt connected in the mounting hole, the flexible member includes the first flexible portion, the first flexible portion covers the mounting hole.

According to some embodiments of the invention, the brush hair is in the dorsal part of the brush board portion forms the hot melt connection piece, the hot melt connection piece extends to the peripheral region of mounting hole, first flexible portion covers the hot melt connection piece.

According to the utility model discloses a some embodiments, the dorsal part of brash portion is formed with the edge the protruding muscle of annular of the edge extension of brash portion, the hot melt connection piece is located the inner ring region of the protruding muscle of annular, just the thickness of hot melt connection piece is greater than the height of the protruding muscle of annular, first flexible portion covers the inner ring region of the protruding muscle of annular extends to the outer loop region of the protruding muscle of annular.

According to some embodiments of the utility model, the brush board portion has state before the hot melt and state after the hot melt under the state before the hot melt, the dorsal part surface of brush board portion has and is located the hot melt structure of mounting hole border, the hot melt structure includes chamfer face and/or hot melt post, the chamfer face is in the footpath of mounting hole is along keeping away from the direction orientation of mounting hole is close to the direction slope of brush board portion extends under the state after the hot melt, the hot melt connection piece with the hot melt structure butt fusion is as an organic whole.

According to a second aspect of the present invention, there is provided an electric toothbrush, comprising: a brush handle including a drive shaft; and an electric toothbrush head according to an embodiment of the first aspect of the invention, the electric toothbrush head being detachably connected to the transmission shaft.

According to the utility model discloses an electric toothbrush of second aspect embodiment, through utilizing according to the utility model discloses an electric toothbrush head of first aspect embodiment can transmit the vibration of motor better, and cleaning performance is good, and has better oral cavity protection effect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

figure 1 is a perspective view of a powered toothbrush head according to a first embodiment of the present invention;

figure 2 is a top plan view of a powered toothbrush head according to a first embodiment of the invention;

figure 3 is a front elevational view of a powered toothbrush head according to a first embodiment of the invention;

figure 4 is an angled cross-sectional schematic view of a powered toothbrush head according to a first embodiment of the invention;

figure 5 is a schematic cross-sectional view of another angle of the powered toothbrush head according to the first embodiment of the invention;

figure 6 is a schematic perspective view of the head body of a powered toothbrush head according to a first embodiment of the present invention;

figure 7 is a top plan view of a powered toothbrush head according to a first embodiment of the invention;

figure 8 is a schematic view of bristles of a powered toothbrush head according to an embodiment of the present invention;

figure 9 is a schematic perspective view of a flexible member of a powered toothbrush head according to a first embodiment of the invention;

figure 10 is a schematic perspective view of a powered toothbrush head according to a second embodiment of the invention;

figure 11 is a top plan view of a powered toothbrush head according to a second embodiment of the invention;

figure 12 is a front elevational view of a powered toothbrush head according to a second embodiment of the invention;

figure 13 is an angled cross-sectional schematic view of a powered toothbrush head according to a second embodiment of the invention;

figure 14 is a schematic view of the engagement of the bristles of a powered toothbrush head according to a second embodiment of the invention with the flexible member;

figure 15 is a perspective view of a powered toothbrush head according to a third embodiment of the invention;

figure 16 is an angled cross-sectional schematic view of a powered toothbrush head according to a third embodiment of the invention;

figure 17 is a schematic view of the head body of a powered toothbrush head according to a third embodiment of the invention;

figure 18 is a schematic view of a flexible member of a powered toothbrush head according to a third embodiment of the invention.

Reference numerals:

the power-driven toothbrush head 100 is,

a brush head body 10, a brush rod part 11, a first end 11a, a second end 11b, a groove part 111, a brush plate part 12, a front side 12a, a back side 12b, an annular convex rib 121, a hot melting structure 122, an annular bulge 125,

the number of bristles 20, root 21, head 22,

the flexible member 30, the first flexible portion 31, the extension portion 32, the second flexible portion 33, the third flexible portion 34,

a connecting portion 40 to which the tube 50 is attached; avoidance hole a and mounting hole b.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more.

Hereinafter, an electric toothbrush head 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-3, a powered toothbrush head 100 according to the present invention includes a head body 10, a plurality of bristles 20, and a flexible member 30.

As shown in fig. 4 to 6, the brush head body 10 includes a brush rod portion 11 and a brush plate portion 12, the brush rod portion 11 includes a first end 11a and a second end 11b opposite to each other in a length direction, the brush plate portion 12 is connected to the first end 11a of the brush rod portion 11, two sides of a thickness of the brush plate portion 12 are a front side 12a and a back side 12b, respectively, and a deformable angle of the brush head body 10 is less than 10 °.

It should be noted that, the deformable angle of the brush plate portion 12 relative to the brush rod portion 11 being less than 10 ° means that one end of the brush plate portion 12 is configured as a fixed end connected to the first end 11a of the brush rod portion 11, the other end of the brush plate portion 12 is configured as a free end, and a connection line between the fixed end and the free end of the brush plate portion 12 is an initial connection line when the brush plate portion 12 is in an unstressed state relative to the brush rod portion 11, and is an instantaneous connection line when the brush plate portion 12 is in a stressed deformed state relative to the brush rod portion 11, and an included angle between the instantaneous connection line and the initial connection line can be changed between 0 ° and 10 °, for example, 1 °, 2 °, 4 °, 6 °, 8 °, and so on.

Combine fig. 1 and 5, the second end 11b of brush pole portion 11 is suitable for connecting electric toothbrush's brush holder, and brush pole portion 11 transmits the vibration that electric toothbrush's brush holder produced to brush board portion 12, because electric toothbrush head 100's flexible angle is less than 10, therefore electric toothbrush head 100's deformation degree is little, and electric toothbrush head 100 has better transmission effect to the vibration of brush holder, can guarantee the clean dynamics of brush hair 20 to the tooth.

As shown in fig. 8, the length of the brush 20 has a root 21 and a head 22 at two ends, the root 21 of the brush 20 is connected to the brush board 12 (for example, the root 21 and the brush board 12 may be directly fixed, such as the brush board 12 and the brush 20 are fixed by glue, heat-melting, etc., the root 21 and the brush board 12 may be indirectly fixed, such as the brush 20 is fixed to a bracket fixed to the brush board 12, etc.), and the head 22 of the brush 20 extends from the front side 12a of the brush board 12, may extend perpendicularly outwards, or may extend obliquely outwards with a certain angle (i.e., with a certain angle to the normal of the brush board 12).

As shown in fig. 1 and 4, the flexible member 30 has a hardness smaller than that of the brush plate portion 12, and the flexible member 30 includes at least one of a first flexible portion 31, a second flexible portion 33, and a third flexible portion 34, wherein the first flexible portion 31 is disposed on the back side of the brush plate portion 12, the second flexible portion 33 is disposed on the peripheral side of the brush plate portion 12, and the third flexible portion 34 is disposed on the front side of the brush plate portion 12, so that the flexible member 30 can wrap at least a portion of the brush plate portion 12, and the relatively soft flexible member 30 can be used to reduce the rigid contact between the brush plate portion 12 and the oral cavity surface, or the gum surface, or the tooth surface, thereby improving the comfort level. Moreover, the relatively hard brush plate part 12 is beneficial to the fixed connection of the brush 20, can ensure the connection reliability of the brush 20, and can keep the shape of the flexible element 30 to prevent the flexible element 30 from being deformed by force.

As shown in fig. 1, 4 and 9, the flexible member 30 includes at least a first flexible portion 31, and the first flexible portion 31 is located on a side of the root portion 21 of the bristle 20 away from the head portion 22 and covers at least a portion of the back surface of the brush plate portion 12. From this, first flexible portion 31 both can shelter from the dorsal part of brush hair 20, can cover at least part of dorsal part 12b of brush board portion 12 again, thereby both can improve the reliability of being connected of brush hair 20 and brush board portion 12, can form the flexible layer at dorsal part 12b of brush board portion 12 again, reduce the dorsal part 12b of brush board portion 12 and to the colliding with that the oral cavity caused, further improve user's use travelling comfort, and, because electric toothbrush head 100 is effectual to the vibration transmission of brush holder, through setting up first flexible portion 31, can be when brush hair 20 receives the flank of tooth reaction force, form the flexible protection to the oral cavity surface more effectively.

As shown in fig. 1 and 9, the flexible member 30 includes at least a second flexible portion 33, and the second flexible portion 33 covers at least a portion of the circumferential side surface of the brush plate portion 12. For example, when the user turns the brush plate portion 12 from the outer tooth surface side to the inner tooth surface side or from the inner tooth surface side to the outer tooth surface side at the time of using the electric toothbrush, the circumferential side of the brush plate portion 12 is likely to collide with the teeth, and for example, when the brush 20 cleans the tooth surface, the vibration of the brush plate portion 12 in the width direction thereof is likely to cause the circumferential side of the brush plate portion 12 to impact the oral cavity surface, and further, for example, when the line connecting the longitudinal line of the brush plate portion 12 and the center of each tooth surface is inclined, the circumferential side of the brush plate portion 12 is likely to impact the oral cavity surface, and the like. Thus, at least part of the peripheral side surface of the brush plate portion 12 is covered with the relatively soft second flexible portion 33, so that the rigid contact between the peripheral side surface of the brush plate portion 12 and the oral surface, the gum surface, the tooth surface, or the like can be minimized, and the use comfort can be improved.

As shown in fig. 12-14, the flexible member 30 at least includes a third flexible portion 34, the third flexible portion 34 covers at least a portion of the front side surface of the brush plate portion 12, an avoiding hole a is formed in the third flexible portion 34, and a portion of the bristles 20 located on the front side 12a of the brush plate portion 12 passes through the avoiding hole a. Therefore, when the user uses the electric toothbrush with a large force and presses the brush plate portion 12 in the direction of the tooth surface, the brush bristles 20 may be deformed to a large extent in contact with the tooth surface, and the front side surface of the brush plate portion 12 may contact the tooth surface or the gum, so that at least a part of the front side surface of the brush plate portion 12 is covered with the relatively soft third flexible portion 34, and the rigid contact between the front side surface of the brush plate portion 12 and the gum surface, the tooth surface, or the like can be minimized, thereby improving the use comfort.

The first flexible portion 31, the second flexible portion 33 and the third flexible portion 34 may be made of the same material, such as soft glue, specifically, silicone rubber, etc.

According to some embodiments of the present invention, as shown in fig. 4, the brush plate portion 12 and the brush rod portion 11 are integrally formed, so that the electric toothbrush head 100 can be processed more simply and conveniently, thereby improving the processing efficiency and reducing the processing cost. And, the sum of the maximum deformation angle of the brush plate portion 12 and the maximum deformation angle of the brush bar portion 11 is less than 10 °. Therefore, other connecting structures are not needed to be arranged between the brush board part 12 and the brush rod part 11, and the vibration of the brush handle is prevented from being attenuated in the redundant connecting structures, so that the cleaning force of the brush bristles 20 on the teeth is stronger, and the teeth are cleaned more thoroughly.

The brush plate portion 12 and the brush rod portion 11 may be made of rigid plastic, such as PC, PV, PP, PS, ABS, etc.

According to some embodiments of the present invention, as shown in fig. 12 and 13, the brush plate portion 12 and the brush rod portion 11 are separated, the brush head body 10 further includes a connecting portion 40, the brush plate portion 12 and the brush rod portion 11 are connected through the connecting portion 40, in other words, in the embodiment where the brush plate portion 12 and the brush rod portion 11 are separated, the brush rod portion 11 is disposed on the connecting portion 40, the connecting portion 40 is connected with the brush rod portion 11, the brush plate portion 12 is used for installing the bristles 20, and the brush plate portion 12 and the brush rod portion 11 are separated, so that the bristles 20 can be assembled on the brush plate portion 12, and the assembling convenience of the electric toothbrush head 100 can be improved.

Wherein the sum of the maximum deformation angle of the brush plate part 12, the maximum deformation angle of the brush bar part 11 and the maximum deformation angle of the connecting part 40 is less than 10 degrees. So that the deformation of the head body 10 is still small and the connecting portion 40 may be a hard plastic member.

In some optional embodiments of the present invention, referring to fig. 13, the connecting portion 40 is disposed on the back side 12b of the brush plate portion 12, the connecting portion 40 and the brush rod portion 11 are integrally formed, a part of the flexible member 30 is disposed between the connecting portion 40 and the brush plate portion 12, and the flexible member 30 connects the connecting portion 40 and the brush plate portion 12.

Therefore, the connecting portion 40 is formed as a bracket connected to the first end 11a of the brush rod portion 11, the brush plate portion 12 and the connecting portion 40 are connected through the flexible member 30, the flexible member 30 is at least partially coated on the connecting portion 40, and the bonding area between the connecting portion 40 and the flexible member 30 is increased, so that the connection stability between the brush plate portion 12 and the connecting portion 40 is improved.

In other optional embodiments of the present invention, the connecting portion 40 is disposed between the brush plate portion 12 and the brush bar portion 11, and the connecting portion 40 is disposed along the length extending direction of the brush bar portion 11, and connects the brush plate portion 12 and the brush bar portion 11. Therefore, the length of the brush rod part 11 can be reduced properly, so that the brush rod part is convenient to manufacture, disassemble and assemble.

Of course, the present invention is not limited thereto, for example, in other embodiments, the connecting portion 40 and the brush rod portion 11 may also be separate components and assembled to be connected, or the connecting portion 40 and the brush plate portion 12 may also be connected by other manners, such as bonding or other fixing manners, and the details are not described herein.

In some embodiments of the present invention, as shown in fig. 1 and 9, the flexible member 30 includes both the first flexible portion 31 and the second flexible portion 33, so as to form a better flexible barrier from the back side and the peripheral side of the brush plate portion 12, and to protect the oral cavity, the gum tooth surface, and the like better and more comprehensively.

When the flexible member 30 includes both the first flexible portion 31 and the second flexible portion 33, the thickness of the second flexible portion 33 is smaller than that of the first flexible portion 31. Thereby, the peripheral side edge of the flexible member 30 can be narrowed, and the width of the brush plate portion 12 is relatively wide, so that the area of the brush plate portion 12 for arranging the bristles 20 is larger, and the range in which the bristles 20 can be set is larger.

Illustratively, the thickness of the second flexible portion 33 is not more than 1mm, so that it can be better avoided that the distribution area of the second flexible portion 33 on the circumferential side of the brush plate portion 12 is too large to affect the distribution of the bristles 20.

At this time, the first flexible portion 31 extends toward the peripheral side surface of the brush plate portion 12 to be connected to the second flexible portion 33. It is understood that the first flexible portion 31 extends along the length and width of the back side 12b of the brush plate portion 12, while the second flexible portion 33 surrounds the circumferential edge of the first flexible portion 31 and extends along the thickness of the brush plate portion 12, and when the first flexible portion 31 is connected to the second flexible portion 33, the back side 12b and at least a portion of the circumferential side of the brush plate portion 12 can be covered.

Therefore, on one hand, the connection stability of the flexible part 30 and the brush board part 12 can be improved, and the local tilting phenomenon of the flexible part 30 is improved; on the other hand, the flexible member 30 has a larger covering area for the brush plate portion 12, so that the rigid portion of the brush plate portion 12, including the edge rigid portion where the back surface meets the peripheral surface, can be better isolated from the gum, the mouth, the tooth surface, and the like, thereby further improving the comfort of use.

In other embodiments of the present invention, as shown in fig. 12 and 14, the flexible member 30 includes both the second flexible portion 33 and the third flexible portion 34, so as to form a better flexible barrier from the front side and the peripheral side of the brush plate portion 12, thereby providing better and more comprehensive protection for the oral cavity, the gingival tooth surface, etc.

When the flexible member 30 includes both the second flexible portion 33 and the third flexible portion 34, the third flexible portion 34 extends toward the peripheral side surface of the brush plate portion 12 to be connected to the second flexible portion 33. Therefore, on one hand, the connection stability of the flexible part 30 and the brush board part 12 can be improved, and the local tilting phenomenon of the flexible part 30 is improved; on the other hand, the flexible member 30 has a larger covering area for the brush plate portion 12, and can better isolate the rigid portion of the brush plate portion 12, including the rigid portion where the front surface and the peripheral surface meet, from the gum, the mouth, the tooth surface, and the like, to further improve the comfort in use.

In still other embodiments of the present invention, as shown in fig. 12 and 14, the flexible member 30 includes both the first flexible portion 31 and the third flexible portion 34, so as to form a better flexible barrier from the front side and the back side of the brush plate portion 12, and to form a better and more comprehensive protection for the oral cavity, the tooth surface of the gum, and the like.

Alternatively, when the flexible member 30 includes both the first flexible portion 31 and the third flexible portion 34, the thickness of the third flexible portion 34 is smaller than that of the first flexible portion 31. Specifically, on the premise of ensuring the overall strength of the electric toothbrush head 100, the brush head portion of the electric toothbrush head 100 needs to have a certain thickness, if the thickness of the third flexible portion 34 located on the front side is too thick and is formed by injection molding, the third flexible portion is affected by the bristles 20 during injection molding and is not easy to be uniformly injected, so that the first flexible portion 31 on the back side is relatively thicker, most of the rest thicknesses of the brush head portion are increased, the transmission effect of the brush head body 10 on the vibration of the brush handle is further optimized, and the first flexible portion 31 which is relatively thicker can form better buffer protection from the back side of the brush plate portion 12.

Illustratively, the thickness of the third flexible portion 34 is not more than 1mm, so that the problem that the injection molding thickness of the third flexible portion 34 is too large, which causes poor flowability of soft glue injection molding, and further causes non-uniformity of an injection molding structure can be avoided.

In some embodiments of the present invention, the thickness of the first flexible portion is less than 1/2 of the thickness of the brush plate portion. In other words, the thickness of the first flexible portion 31 is not more than half of the thickness of the brush plate portion 12, so that the thickness of the brush plate portion 12 can be increased to ensure the rigidity of the brush plate portion 12 and prevent the deformation of the brush plate portion 12, and the first flexible portion 31 can be stably connected to the back side 12b of the brush plate portion 12 to improve the structural strength of the entire electric toothbrush head 100.

Further, as shown in fig. 12 and 14, the flexible member 30 includes three of the first flexible portion 31, the second flexible portion 33 and the third flexible portion 34, so that a better flexible barrier can be formed from the front side, the back side and the peripheral side of the brush plate portion 12, and a better and more comprehensive protection can be formed for the oral cavity, the gum tooth surface and the like.

When the flexible member 30 includes the first flexible portion 31, the second flexible portion 33, and the third flexible portion 34, as shown in fig. 15, the flexible member 30 may be further configured to wrap the entire surface of the brush plate portion 12. That is, the outer side of the brush plate portion 12 is covered with the flexible member 30, the flexible member 30 is configured as a flexible sleeve having a contour substantially identical to that of the brush plate portion 12, and is injection-molded or sleeved on the brush plate portion 12, and a portion of the flexible member 30 located on the front side 12a of the brush plate portion 12 is opened with an avoiding hole a for the bristles 20 to pass through.

Therefore, on one hand, the connection between the flexible part 30 and the brush board part 12 can be improved to be more stable and reliable, and the local tilting phenomenon of the flexible part 30 can be better improved; on the other hand, the flexible member 30 covers the brush plate portion 12 in a larger area, so that the rigid portion of the brush plate portion 12, including the rigid portions such as the back surface, the peripheral surface, the front surface, and the edge of the junction between the adjacent surfaces, can be better isolated from the gum, the mouth, the tooth surface, and the like, thereby further improving the comfort of use.

According to some embodiments of the present invention, as shown in fig. 15-18, the flexible member 30 includes a first flexible portion 31, the back surface of the brush rod portion 11 is formed with a groove portion 111, and the flexible member 30 further includes an extension portion 32, and the extension portion 32 is filled in the groove portion 111 and connected to the first flexible portion 31.

In other words, the brush rod portion 11 is provided with a groove portion 111 on the first end 11a of the brush rod portion 11 on the same side as the back side 12b of the brush plate portion 12, the flexible member 30 has an extending portion 32 matching with the groove portion 111, the flexible member 30 is provided with the extending portion 32 on the side facing the first end 11a of the brush rod portion 11 for connecting with the brush rod portion 11, and the extending portion 32 is matched with the groove portion 111 in a conformal design and is filled in the groove portion 111.

In this way, the extending portion 32 and the first flexible portion 31 can perform buffering of the reaction force of the tooth surface and effective protection of the gum and the oral surface in the back side 12b of the brush plate portion 12. And, when groove portion 111 is inserted with extension portion 32, it can be interference fit to prevent extension portion 32 from deviating from groove portion 111, so as to improve the stability of the fit between flexible member 30 and brush head body 10, and improve the service life of electric toothbrush head 100. Alternatively, the extended portion 32 may be injection molded in the groove portion 111, thereby simplifying the process and further improving the connection reliability.

In some alternative embodiments, first flexible portion 31 and extension portion 32 may be integrally formed, or, in other embodiments, first flexible portion 31 and extension portion 32 may be constructed as a single piece, first flexible portion 31 may be secured to back side 12b of brash section 12, extension portion 32 is secured partially to back side 12b of brash section 12, partially within grooved portion 111 or fully within grooved portion 111, and so forth.

In addition, in some embodiments, the flexible member 30 may be integrally formed as an injection-molded member and connected to the head body 10 by injection molding, so as to simplify the manufacturing process and improve the reliability of the combination of the two.

In some embodiments, the groove wall of the groove portion 111 may be configured as a curved surface, thereby facilitating the flow of the injection molding material within the groove portion 111 and improving the uniformity of injection molding.

Further, the width of the groove portion 111 gradually decreases and then gradually increases in the direction from the brush plate portion 12 to the brush rod portion 11.

From this, can form to closing up earlier, the form of flaring again to guarantee that the whole width of concave part 111 can be even relatively, the wide department is unlikely to too wide, and narrower department is unlikely to too narrow, thereby makes extension 32 and concave part 111 be connected more reliably, and anticreep nature is better, is favorable to moulding plastics moreover more.

In some embodiments of the present invention, as shown in fig. 10-13, the cross-sectional area of the end of the brush plate portion 12 connected to the brush rod portion 11 is smaller than the cross-sectional area of the end of the brush rod portion 11 connected to the brush rod portion 12, and a portion of the flexible member 30 is disposed at the end of the brush plate portion 12 connected to the brush rod portion 11, so that the outer surface of the electric toothbrush head 100 at the joint of the brush plate portion 12 and the brush rod portion 11 is smoothly transited.

Thus, on the one hand, the appearance of the electric toothbrush head 100 is smoother, the gripping comfort can be improved, the dirt accumulation at the joint of the brush plate part 12 and the brush rod part 11 is avoided, and the cleaning performance is improved, and on the other hand, the connection stability of the brush plate part 12 and the brush rod part 11 can be improved.

According to some embodiments of the present invention, as shown in fig. 4 to 7, the brush plate portion 12 is formed with a mounting hole b, and the root portion 21 of the brush 20 is disposed in the mounting hole b. Therefore, the root 21 of the bristle 20 can be limited by the mounting hole b, so that the connection stability of the bristle 20 and the cleaning force of the bristle 20 to the tooth surface can be improved. For example, the bristles 20 are multiple, the multiple bristles 20 can be formed into several bristle tufts with the same or different geometric shapes, and each mounting hole b is correspondingly provided with one bristle tuft.

Further, as shown in fig. 10 and 11, the front side surface of the brush plate portion 12 is formed with a plurality of annular protrusions 125, inner rings of the annular protrusions 125 form mounting holes b, the flexible member 30 includes a third flexible portion 34, the third flexible portion 34 is formed with avoiding holes b avoiding the annular protrusions 125, and the thickness of the third flexible portion 34 is not greater than the height of the annular protrusions 125.

From this, when third flexible portion 34 processed to brush board portion 12 through injection molding process on, can avoid moulding plastics in-process fluid state's material to flow into the mounting hole b of brush hair 20 through the separation of annular protrusion 125, avoid leading to brush hair 20 adhesion phenomenon to appear, also make things convenient for follow-up electric toothbrush head 100's washing, avoid hiding between the brush hair 20.

Alternatively, the height of the annular protrusion 125 does not exceed 2mm, and thus, the restriction of the deformation of the bristles 20 by the annular protrusion 125 can be reduced, so that the bristles 20 can better exert the deformation, and the cleaning effect on the tooth surface can be improved.

Alternatively, the annular protrusion 125 is soft, and thus, the restriction of the deformation of the bristles 20 by the annular protrusion 125 can be reduced, so that the bristles 20 can be better deformed, and the cleaning effect on the tooth surface can be improved.

According to some embodiments of the present invention, the mounting hole b is a through hole, the root 21 of the bristle 20 is thermally fused to the mounting hole b, the flexible member 30 includes a first flexible portion 31, and the first flexible portion 31 covers the mounting hole b.

Wherein, the first flexible portion 31 that is located the dorsal part 12b of brush board portion 12 covers in mounting hole b to shelter from mounting hole b, guarantee electric toothbrush head 100's surface finish, the dorsal part 12b unevenness of the brush board portion 12 of avoiding the assembly after finishing leads to hiding dirty phenomenon, improves clean convenience, and can form the protection to the root 21 of brush hair 20, improves brush hair 20's connection reliability. In addition, the thermal melting connection mode is beneficial to fixing the bristles 20, and the processing convenience and the connection reliability are improved.

Further, the brush staples 20 are formed with a heat-fusible connecting piece on the back side 12b of the brush plate portion 12, the heat-fusible connecting piece extending to the outer peripheral region of the mounting hole b, and the first flexible portion covers the heat-fusible connecting piece. It can be understood that the bristles 20 are inserted into the mounting holes b, and the hot-melt connecting pieces are melted and then solidified with the bristles 20 to fix the roots 21 of the bristles 20 on the brush plate portion 12, and the first flexible portions 31 are covered outside the hot-melt connecting pieces, so that the specified stability of the bristles 20 on the brush plate portion 12 can be improved, and the unevenness of the outer surface of the electric toothbrush head 100 caused by the hot-melt process can be avoided to improve the cleaning convenience.

Further, as shown in fig. 15 to 18, the back side 12b of the brush plate portion 12 is formed with an annular rib 121 extending along the edge, a heat-fusible connecting sheet is provided in an inner ring area of the annular rib 121, and the thickness of the heat-fusible connecting sheet is larger than the height of the annular rib 121, and the first flexible portion 31 covers the inner ring area of the annular rib 121 and extends to an outer ring area of the annular rib 121.

That is to say, the periphery of brush board portion 12 is provided with annular protruding muscle 121, the recess (being the inner ring region) is injectd to the inside of annular protruding muscle 121, the hot melt connection piece sets up in the recess, the rest in the recess is filled by first flexible portion 31, the outer part of recess is also covered by first flexible portion 31, the height that highly is higher than annular protruding muscle 121 of hot melt connection piece, therefore, make brush board portion 12 more non-deformable, electric toothbrush head 100 has better transmission effect to the vibration of the motor in electric toothbrush, can guarantee brush hair 20 to the clean dynamics of tooth.

Alternatively, as shown in fig. 6 to 7, the brush plate portion 12 has a pre-heat-melting state in which the back surface of the brush plate portion 12 has the heat-melting structure 122 located around the mounting hole b, and the heat-melting structure 122 includes a chamfered surface and/or a heat-melting post, the chamfered surface obliquely extending in the radial direction of the mounting hole b in the direction away from the mounting hole b toward the direction close to the brush plate portion 12, and a post-heat-melting state in which the heat-melting connecting piece is welded integrally with the heat-melting structure 122.

Specifically, the chamfer of the opening of the mounting hole b forms a chamfer surface, has a certain guiding function on the form of the hot-melt connecting sheet formed after the bristles 20 are hot-melted, and is beneficial to guiding the bristles 20 to be hot-melt connected sheet with the cross section area larger than that of the mounting hole b. The periphery interval of the mounting hole b of brush board portion 12 is provided with a plurality of hot melt posts, and the hot melt post is as an organic whole with the butt fusion when brush hair 20 is heated, has promoted the connection effect of brush hair 20 and brush board portion 12. From this, through the setting of chamfer face and/or hot melt post, make the hot melt processing back, the brush hair 20 is more stable with the fixed of brush board portion 12, avoids electric toothbrush head 100 in-process, and the phenomenon that drops appears in brush hair 20, improves and uses experience.

Of course, the present invention is not limited thereto, and the brush 20 may not be directly connected to the mounting holes b, for example, in some other embodiments, as shown in fig. 11, a mounting tube 50 is disposed in at least one mounting hole b, and the root 21 of the brush 20 is connected to the mounting tube 50. Thus, by providing the attachment pipe 50, the attachment of the brush 20 can be achieved, and the stability of connection between the brush 20 and the brush plate portion 12 can be improved.

It should be noted that the mounting tube 50 may be completely embedded in the corresponding mounting hole b, or may have a portion exposed outside the mounting hole b, which is not limited herein.

Hereinafter, an electric toothbrush according to an embodiment of the present invention, which includes a handle including a transmission shaft and an electric toothbrush head 100 according to the above embodiment of the present invention, and the electric toothbrush head 100 is detachably coupled to the transmission shaft, will be described with reference to the accompanying drawings.

According to the utility model discloses electric toothbrush, through utilizing according to the utility model discloses the vibration of motor can be transmitted betterly to electric toothbrush head 100 of the above-mentioned embodiment, and cleaning performance is good, and has better oral cavity protection effect.

Other constructions and operations of the powered toothbrush head 100 and powered toothbrushes having the same according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (20)

1. An electric toothbrush head, comprising:

the brush head comprises a brush head body, the brush head body comprises a brush rod part and a brush plate part, the brush rod part comprises a first end and a second end which are opposite in the length direction, the brush plate part is connected to the first end of the brush rod part, the two sides of the thickness of the brush plate part are respectively a front side and a back side, and the deformable angle of the brush head body is smaller than 10 degrees;

the two ends of the length of each brush hair are respectively a root and a head, the roots of the brush hairs are connected to the brush board part, and the heads of the brush hairs extend out from the front side of the brush board part;

a flexible member, the hardness of which is smaller than the hardness of the brush plate portion, and the flexible member includes at least one of a first flexible portion provided on a back side of the brush plate portion, a second flexible portion provided on a peripheral side of the brush plate portion, and a third flexible portion provided on a front side of the brush plate portion.

2. The powered toothbrush head of claim 1 wherein the plate portion and the shaft portion are integrally formed, the sum of the maximum deformation angle of the plate portion and the maximum deformation angle of the shaft portion being less than 10 °.

3. The powered toothbrush head of claim 1, wherein the blade portion and the shaft portion are separate pieces, the body further including a connecting portion through which the blade portion and the shaft portion are connected;

wherein a sum of a maximum deformation angle of the brush plate portion, a maximum deformation angle of the brush bar portion, and a maximum deformation angle of the connecting portion is less than 10 °.

4. The powered toothbrush head of claim 3 wherein the connecting portion is located on a back side of the brash segment and is integrally formed with the brash stem, and a portion of the flexible member is located between and connects the connecting portion and the brash segment.

5. A powered toothbrush head according to claim 3 characterised in that the connecting portion is provided between and connects the plate portion and the shaft portion in the direction of extension of the length of the shaft portion.

6. The powered toothbrush head of claim 1 wherein the flexible member includes both the first flexible portion and a second flexible portion, the second flexible portion having a thickness less than a thickness of the first flexible portion; and/or the presence of a gas in the gas,

the flexible piece comprises the first flexible portion and a third flexible portion, and the thickness of the third flexible portion is smaller than that of the first flexible portion.

7. The powered toothbrush head of claim 1 wherein the first flexible portion has a thickness less than 1/2 of the thickness of the brushplate portion.

8. The powered toothbrush head of claim 1 wherein the flexible member includes both the first flexible portion and the second flexible portion, the first flexible portion extending toward the peripheral side surface of the brush plate portion and being connected to the second flexible portion; and/or the presence of a gas in the gas,

the flexible piece simultaneously includes third flexible portion with the second flexible portion, the third flexible portion to the week side surface extension of brush board portion and with the second flexible portion links to each other.

9. The powered toothbrush head of claim 8 wherein the flexible member includes all of the first, second and third flexible portions and completely encases the portion except for the bristles.

10. The powered toothbrush head of claim 1 wherein the flexible member includes the first flexible portion, the back surface of the shaft portion being formed with a recessed portion, the flexible member further including an extension portion filling the recessed portion and connected to the first flexible portion.

11. The powered toothbrush head of claim 10 wherein the width of the groove portion gradually decreases and then gradually increases in a direction from the blade portion to the shaft portion.

12. The powered toothbrush head of claim 1 wherein the cross-sectional area of the portion of the brush plate adjacent the end of the shaft portion is less than the cross-sectional area of the portion of the brush plate adjacent the end of the shaft portion, and a portion of the flexible member is disposed at the end of the portion of the brush plate adjacent the end of the shaft portion to provide a smooth transition of the outer surface of the powered toothbrush head at the junction of the portion of the brush plate and the shaft portion.

13. An electrically powered toothbrush head according to any one of claims 1 to 12 wherein the plate portion is formed with mounting holes in which the root portions of the bristles are located.

14. The powered toothbrush head of claim 13 wherein the front surface of the brush plate portion is formed with a plurality of annular protrusions, the inner ring of the annular protrusions forming the mounting holes, the flexible member including the third flexible portion, the third flexible portion being formed with an avoidance hole to avoid the annular protrusions, the thickness of the third flexible portion being no greater than the height of the annular protrusions.

15. The powered toothbrush head of claim 14 wherein the height of the annular protrusion is no more than 2mm; and/or the annular bulge is soft.

16. The powered toothbrush head of claim 13 wherein the mounting hole is a through hole, the root portion of the bristle being thermally fused to the mounting hole, the flexible member including the first flexible portion, the first flexible portion covering the mounting hole.

17. The powered toothbrush head of claim 16, wherein the bristles form a heat-fusible web on a back side of the brush plate portion, the heat-fusible web extending to a peripheral region of the mounting hole, the first flexible portion covering the heat-fusible web.

18. The powered toothbrush head of claim 17 wherein the back side of the brush plate portion is formed with an annular bead extending along the edge of the brush plate portion, the heat-fusible web is located in an inner annular region of the annular bead, and the thickness of the heat-fusible web is greater than the height of the annular bead, the first flexible portion covering the inner annular region of the annular bead and extending to an outer annular region of the annular bead.

19. The electric toothbrush head according to claim 17, wherein the brush plate portion has a pre-heat-melting state in which the back surface of the brush plate portion has a heat-melting structure located around the mounting hole, and a post-heat-melting state in which the heat-melting connecting piece is welded integrally with the heat-melting structure, the heat-melting structure including a chamfered surface and/or a heat-melting post, the chamfered surface extending obliquely in a radial direction of the mounting hole in a direction away from the mounting hole toward a direction close to the brush plate portion.

20. An electric toothbrush, comprising:

a brush handle, the brush handle including a drive shaft; and

the powered toothbrush head of any of claims 1-19 removably connected to the drive shaft.

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