CN215651691U - Electric toothbrush and brush head thereof - Google Patents

Abstract

The embodiment of the utility model provides an electric toothbrush and a brush head thereof. The brush head provided by the utility model comprises a brush head body and a soft rubber sleeve; the head part of the brush head body is used for fixing bristles; the soft rubber sleeve at least partially covers the head of the brush head body so as to protect the teeth when the brush head collides with the teeth; the soft rubber sleeve is an injection molding piece, and the soft rubber sleeve and the brush head body form an integrated piece through injection molding. The utility model also provides an electric toothbrush which comprises a handle and the brush head. According to the brush head provided by the utility model, the soft rubber sleeve at least partially covers the head part of the brush head body, and when the head part of the brush head collides with teeth, the soft rubber sleeve can play a role in vibration reduction, so that the teeth are protected.

Description

Electric toothbrush and brush head thereof

Technical Field

The embodiment of the utility model relates to the technology of electric toothbrushes, in particular to an electric toothbrush and a toothbrush head thereof.

Background

At present, along with the gradual improvement of living standard, people pay more and more attention to oral hygiene, and the electric toothbrush also gradually enters into vast families. The electric toothbrush drives the brush head to generate high-frequency vibration by utilizing the high-speed vibration of the driving motor, so that the toothpaste is decomposed into fine foam, and the fine foam extends into gaps between teeth to be cleaned.

The existing electric toothbrush comprises a handle and a brush head matched with the handle, wherein a driving motor is positioned in the handle, and an output shaft of the driving motor is inserted into the brush head after extending out of the handle. Wherein, the brush hair is fixed at the head of the brush head body, the output shaft of the driving motor is inserted at the tail of the brush head body, and then the output shaft of the driving motor can drive the brush hair at the head of the brush head body to clean teeth when vibrating.

However, when a user cleans one side of teeth with the electric toothbrush, other parts of the head of the brush head are easy to collide with the other side of teeth, which affects the use experience of the user.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an electric toothbrush and a toothbrush head thereof, and aims to solve the problem that other parts of the head of the toothbrush head are easy to collide with teeth on the other side when the existing electric toothbrush cleans the teeth on one side, so that the use experience of a user is influenced.

According to the embodiment of the utility model, the brush head of the electric toothbrush is provided, which comprises a brush head body and a soft rubber sleeve;

the head part of the brush head body is used for fixing bristles;

the soft rubber sleeve at least partially covers the head of the brush head body so as to protect the teeth when the brush head collides with the teeth;

the soft rubber sleeve is an injection molding piece, and the soft rubber sleeve and the brush head body form an integrated piece through injection molding.

In one possible implementation, the soft rubber sleeve covers the back and/or the side of the head of the brush head body. As can be understood by those skilled in the art, through the arrangement, when the back and/or the side of the head of the brush head body collides with the teeth, the soft rubber sleeve can play a role in vibration reduction, so that the teeth are protected.

In one possible implementation, the soft rubber sleeve extends to the tail part of the brush head body. As can be understood by those skilled in the art, the arrangement can ensure that the soft rubber sleeve positioned at the tail part of the brush head body can also play a role in vibration reduction when the tail part of the brush head body collides with teeth, thereby protecting the teeth.

In one possible implementation manner, the brush head body comprises a bristle planting sheet and a brush head rod, the bristle planting sheet is used for fixing bristles, and the first end of the brush head rod is used for being fixedly connected with a handle of the electric toothbrush; the soft rubber sleeve covers the hair-planting sheet, and the soft rubber sleeve, the hair-planting sheet and the brush head rod are formed into an integrated piece through injection molding. As can be understood by those skilled in the art, the arrangement can ensure the reliability of the connection among the hair-planting sheet, the brush head rod and the soft rubber sleeve.

In a possible implementation manner, the second end of the brush head rod is provided with a boss extending out of the end part of the brush head rod, and the boss is provided with a positioning hole; the boss is wrapped by the soft rubber sleeve;

one end of the bristle planting piece, which faces the brush head rod, is provided with a positioning column, the positioning column is inserted into the positioning hole, and part of the positioning column is in interference fit with the positioning hole;

an opening communicated with the positioning hole is formed in the side wall of the boss, a feeding channel is defined by the opening, the other part of the positioning column and part of the hole wall of the positioning hole, and the feeding channel is used for enabling molten soft rubber to enter the positioning hole during injection molding. As can be understood by those skilled in the art, the arrangement can enable the part of the soft rubber sleeve to be positioned between the hair planting sheet and the brush head rod, so that the vibration of the brush head is softer, and the function of protecting the gum can be achieved.

In a possible implementation manner, the positioning column includes a large-size section and a small-size section, and two ends of the large-size section are respectively and fixedly connected with the hair-planting sheet and the small-size section; the opening extends from the top of the boss to the root of the boss, and the length of the opening is larger than the length of the large-size section inserted into the positioning hole. It will be appreciated by those skilled in the art that the above arrangement may be such that another portion of the locating post defines the feed channel with a portion of the wall of the locating hole.

In a possible implementation mode, a flanging is arranged at the edge of the back of the flocking sheet, the soft rubber sleeve covers the flanging, and the large-size section is fixedly connected with the flanging; and/or the presence of a gas in the gas,

the positioning holes are through holes or blind holes. As can be understood by those skilled in the art, the back surface of the bristle-implanting piece is provided with the flanging, and the part of the soft rubber sleeve positioned in the positioning hole can be ensured not to be separated from the positioning hole after the soft rubber sleeve covers the flanging, namely the soft rubber sleeve can be ensured not to be separated from the bristle-implanting piece and the brush head rod.

In a possible implementation manner, the toothbrush further comprises a metal rod, wherein a boss extending out of the end part of the brush head rod is arranged at the second end of the brush head rod, and a positioning hole is formed in the boss;

the brush head comprises a brush head rod, a soft rubber sleeve and a metal rod, wherein one side of the brush head rod, facing the brush head rod, is provided with a connecting hole, the first end of the metal rod is inserted into the connecting hole and is in interference fit with the connecting hole, the second end of the metal rod is inserted into the positioning hole and is in interference fit with the positioning hole, the end part of the boss and the end part of the brush head are arranged at intervals, and the part of the soft rubber sleeve covers the boss and the part of the metal rod, located between the boss and the connecting hole. As will be appreciated by those skilled in the art, the metal rod may, on the one hand, increase the structural strength of the neck of the brush head, and, on the other hand, act as a counterweight, increasing the excursion of the brush head and improving cleaning ability.

In a possible implementation manner, the hair-planting sheet is further provided with a plurality of supporting columns, and the side walls of the supporting columns are coated by the soft rubber sleeves; and/or the presence of a gas in the gas,

the outer side of the soft rubber sleeve is provided with a plurality of bulges used for cleaning the tongue coating. As can be understood by those skilled in the art, when the soft rubber sleeve is used for injection molding, the end part of the support column is abutted against the inner wall of the mold, namely, the support column can play a role in injection molding positioning. On the other hand, the outer side of the soft rubber sleeve is provided with a plurality of bulges, so that the user can also use the bulges on the outer side of the soft rubber sleeve to clean the tongue fur in the process of brushing teeth, and the function of the brush head is increased.

According to another aspect of the embodiments of the present invention, there is provided an electric toothbrush comprising a handle and the above-mentioned brush head;

the toothbrush is characterized in that a driving motor is arranged inside the handle, an output shaft of the driving motor extends out of the end part of the handle, and the output shaft of the driving motor is inserted into the tail part of the toothbrush head body.

Those skilled in the art will appreciate that the brush head of the present invention includes a brush head body and a soft rubber sleeve. The head part of the brush head body is used for fixing bristles; the soft rubber sleeve at least partially covers the head of the brush head body so as to protect the teeth when the brush head collides with the teeth. The soft rubber sleeve is an injection molding piece, and the soft rubber sleeve and the brush head body form an integrated piece through injection molding. Like this, the head of the at least partial cladding brush head body of flexible glue cover, when the head of brush head and tooth take place to collide with, flexible glue cover is located and can plays the effect of damping between brush head body and the tooth, and then protects tooth, promotes the comfort level when the user brushes teeth.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic view of a brush head according to an embodiment of the present invention;

FIG. 2 is a schematic view of an exploded structure of a brush head according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a brush head provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged partial view of a portion A of FIG. 3;

fig. 6 is a schematic view of an assembled structure of a bristle plate and a bristle tuft according to an embodiment of the present invention;

fig. 7 is a schematic view of the bristle plate and bristle tufts of fig. 6 from another perspective;

FIG. 8 is a schematic view of a portion of the structure of the back side of a toothbrush head provided by an embodiment of the present invention;

FIG. 9 is a schematic view of a structure of the hair-planting patch assembled with the brush head shaft according to the embodiment of the present invention;

FIG. 10 is a schematic view of another embodiment of the present invention showing the structure of the bristle planting plate assembled with the brush head shaft;

figure 11 is a partial cross-sectional view of another head provided by an embodiment of the present invention.

Description of reference numerals:

100-flocking sheet; 110-a positioning column;

111-large size section; 112-small size section;

120-support column; 130-flanging;

200-a brushhead stem; 210-a boss;

220-positioning holes; 230-an opening;

300-soft rubber sleeve; 310-a bump;

400-bristle tufts; 500-a metal rod;

600-brush head body.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be modified as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

An existing electric toothbrush generally comprises a handle and a brush head, wherein a driving motor is arranged in the handle, and an output shaft of the driving motor extends out of the handle and then is connected with the brush head in an inserting mode. The brush hair is fixed on one side of the head of the brush head body, and the output shaft of the driving motor is inserted in the tail of the brush head body, so that the brush hair at the head of the brush head body can be driven to clean teeth when the output shaft of the driving motor vibrates. However, when a user cleans one side of teeth with the electric toothbrush, other parts of the head of the brush head are easy to collide with the other side of teeth, which affects the use experience of the user.

Through thinking repeatedly and verifying, the inventor discovers, if can be if can use the head of soft gum cover cladding brush head body, the user is when using electric toothbrush clean one side tooth, and the flexible glue is towards the tooth of opposite side, and when the head of brush head and tooth take place to collide with, the effect that can play the damping is located between brush head body and the tooth to can protect the tooth.

In view of the above, the inventor designs a brush head of an electric toothbrush, which comprises a brush head body and a soft rubber sleeve; the head part of the brush head body is used for fixing bristles; the soft rubber sleeve at least partially covers the head of the brush head body so as to protect the teeth when the brush head collides with the teeth; the soft rubber sleeve is an injection molding piece, and the soft rubber sleeve and the brush head body form an integrated piece through injection molding. Therefore, the soft rubber sleeve at least partially covers the head of the brush head body, and when the head of the brush head collides with teeth, the soft rubber sleeve can play a role in protecting the teeth.

Example one

FIG. 1 is a schematic view of a brush head according to an embodiment of the present invention; FIG. 2 is a schematic view of an exploded structure of a brush head according to an embodiment of the present invention; FIG. 3 is a cross-sectional view of a brush head provided by an embodiment of the present invention; FIG. 4 is an enlarged view of a portion of FIG. 3 at A; FIG. 5 is an enlarged partial view of a portion A of FIG. 3; fig. 6 is a schematic view of an assembled structure of a bristle plate and a bristle tuft according to an embodiment of the present invention; fig. 7 is a schematic view of the bristle plate and bristle tufts of fig. 6 from another perspective; FIG. 8 is a schematic view of a portion of the structure of the back side of a toothbrush head provided by an embodiment of the present invention; FIG. 9 is a schematic view of a structure of the hair-planting patch assembled with the brush head shaft according to the embodiment of the present invention; FIG. 10 is a schematic view of another embodiment of the present invention showing the structure of the bristle planting plate assembled with the brush head shaft; figure 11 is a partial cross-sectional view of another head provided by an embodiment of the present invention.

As shown in fig. 1, the brush head provided by this embodiment includes a brush head body 600 and a soft rubber sleeve 300, the head of the brush head body 600 is used for fixing bristles, and here, the side of the head of the brush head body 600 for fixing bristles is defined as the front of the head of the brush head body 600. Illustratively, the head of the head body 600 is formed in a flat structure, and the head of the head body 600 is provided with a plurality of bristle holes for fixing bristles. As can be appreciated by those skilled in the art, the tail of the brush head body 600 can be used to connect to the output shaft of the driving motor, so that the output shaft of the driving motor can vibrate to drive the bristles at the head of the brush head body 600 to clean teeth. The soft rubber sleeve 300 at least partially covers the head of the brush head body 600, that is, the soft rubber sleeve 300 can partially cover the head of the brush head body 600 or completely cover the head of the brush head body 600, wherein the thickness of the soft rubber sleeve 300 can be set according to actual needs, and the embodiment is not limited herein. It will be readily appreciated that the soft gel sleeve 300 is softer in hardness than the head body 600, for example, the soft gel sleeve 300 may be made of TPE (Thermoplastic Elastomer) soft gel.

Through using soft gum cover 300 at least part cladding soft gum cover 300's head, when the brush head takes place to collide with the tooth, can avoid the brush head body 600 of stereoplasm to directly touch the tooth, soft gum cover 300 can play the effect of buffering promptly, and then protects the tooth.

In a possible implementation mode, the soft rubber sleeve 300 is an injection molding piece, the soft rubber sleeve 300 and the brush head body 600 are formed into an integrated piece through injection molding, the understanding is easy, the soft rubber sleeve 300 and the brush head body 600 are made into the integrated piece through injection molding, the reliability of connection between the soft rubber sleeve 300 and the brush head body 600 can be guaranteed, and the soft rubber sleeve 300 is not easy to fall off from the brush head body 600.

Specifically, the soft rubber sleeve 300 covers the back and/or the side of the head of the brush head body 600, that is, the soft rubber sleeve 300 may only cover the back of the head of the brush head body 600, or the soft rubber sleeve 300 may only cover the side of the head of the brush head body 600, and of course, the soft rubber sleeve 300 may also cover the back and the side of the head of the brush head body 600 at the same time. The technicians in the field can set the specific position of the soft rubber sleeve 300 for coating the head of the brush head body 600 according to actual needs, and as long as the brush head collides with the teeth, the soft rubber sleeve 300 is positioned between the teeth and the brush head body 600, so that the brush head body 600 is prevented from directly touching the teeth.

Further, the soft rubber sleeve 300 extends to the tail of the brush head body 600, that is, the soft rubber sleeve 300 also covers the tail of the brush head body 600. It is easy to understand, when the brush head stretched into the oral cavity when darker, the afterbody of brush head also can touch the tooth, extended soft gum cover 300 to the afterbody of brush head body 600, can avoid the afterbody of brush head body 600 directly to touch the tooth, and the flexible glue plays the effect of damping to protect the tooth, promote user comfort in use.

As shown in fig. 2, the head body 600 includes a bristle-setting plate 100 and a head rod 200. The soft rubber sleeve 300 covers the hair-planting patch 100, for example, the soft rubber sleeve 300 may only cover the back of the hair-planting patch 100, or the soft rubber sleeve 300 covers both the back and the side of the hair-planting patch 100. It is worth mentioning that the soft rubber sleeve 300 is an injection molding piece, and the soft rubber sleeve 300, the hair-planted sheet 100 and the brush head rod 200 are formed into an integrated piece through injection molding, so that the connection stability among the hair-planted sheet 100, the brush head rod 200 and the soft rubber sleeve 300 is ensured.

Further, the bristle-implanted sheet 100 and the brush head rod 200 are positioned by the positioning structure before the injection molding of the soft rubber, and the soft rubber can penetrate into the gap between the bristle-implanted sheet 100 and the brush head rod 200 and is fixed with the bristle-implanted sheet 100 and the brush head rod 200 respectively in the injection molding process, so that the reliability of the connection among the soft rubber sleeve 300, the bristle-implanted sheet 100 and the brush head rod 200 is ensured.

It is easily understood that the blade 100 is used to fix bristles. Fig. 2 shows that the main body of the hair-planting patch 100 has a sheet-like structure, wherein the main body of the hair-planting patch 100 may have any suitable shape, such as an oblong, a rectangular, or a circular shape. The bristles are substantially perpendicular to the main body of the blade 100, and the roots of the bristles are fixed to the blade 100.

Illustratively, the bristles are fixed to the blade 100 by a copper-free tufting process, and specifically, the blade 100 is provided with a plurality of tufting holes, and the bristles are arranged in a plurality of bristle tufts 400 according to a certain shape, it being understood that the cross-sectional shape of the bristle tufts 400 matches the cross-sectional shape of the tufting holes. Each bristle tuft 400 is sucked into a corresponding tuft hole by means of vacuum suction. The back surface of the bristle plate 100 is fixed to the root of the bristle tuft 400 by ultrasonic welding.

As can be understood by those skilled in the art, the bristles are fixed to the bristle-implanted sheet 100 through copper-free bristle implantation, so that the bristles are not fixed by using a metal sheet, and health problems caused by oxidation and rusting of the metal sheet can be avoided. In addition, the cross-sectional shape of the bristle tufts 400 may be any suitable shape, such as a circle, a triangle, or an oval as shown in fig. 6-7, and the present embodiment is not limited to the cross-sectional shape of the bristle tufts 400 as long as the cross-sectional shape of the bristle tufts 400 satisfies the copper-free tufting apparatus.

The first end of the brush head rod 200 is used for being fastened with a handle of the electric toothbrush, and illustratively, a driving motor is disposed in the handle of the electric toothbrush, an output shaft of the driving motor extends out of the handle, and the output shaft of the driving motor is fastened with the first end of the brush head rod 200. Fig. 2 shows that the brush head rod 200 is of an approximately conical structure, and the first end of the brush head rod 200 is the large diameter end of the conical structure. Illustratively, a mounting hole extending along the axial direction of the brush head rod 200 is formed in the first end of the brush head rod 200, an output shaft of the driving motor can be inserted into the mounting hole of the brush head rod 200, and the end surface of the first end of the brush head rod 200 can be abutted against the end of the handle.

As shown in fig. 8, a plurality of protrusions 310 are disposed on the outer side of the soft rubber sleeve 300, and the plurality of protrusions 310 are spaced from each other. Illustratively, the soft rubber sleeve 300 covers the back surface of the hair-planting plate 100, and a plurality of protrusions may be arranged at intervals on the back surface of the soft rubber sleeve 300 and positioned at the head of the brush head. Wherein, the plurality of protrusions 310 may be used to clean the tongue coating. Fig. 8 shows that the top of the protrusion 310 has a hemispherical structure, so that the comfort of the user can be improved when the tongue coating is cleaned by using the protrusion 310. It should be noted that the number of the protrusions 310 is not limited, and those skilled in the art can set the number according to actual needs. It is easy to understand that the protrusion 310 is also made of soft rubber, and after the soft rubber sleeve 300 is injection molded, a plurality of protrusions 310 are formed on the outer side of the soft rubber sleeve 300. As can be appreciated by those skilled in the art, the formation of the plurality of protrusions 310 on the outside of the soft gum cover 300 can also increase the function of the brush head, i.e., the user can also use the protrusions 310 on the outside of the soft gum cover 300 to clean the tongue fur during the tooth brushing process.

As shown in fig. 7-8, the bristle-implanting piece 100 is further provided with a plurality of supporting columns 120, and the supporting columns 120 are used for supporting the bristle-implanting piece 100 when the soft rubber sleeve 300 is injection-molded, that is, the supporting columns 120 abut against the inner wall of the mold during the injection-molding process of the soft rubber sleeve 300, so as to prevent the bristle-implanting piece 100 from moving relative to the mold. It should be noted that the cross section of the support columns 120 is not limited to a circle, and the sizes of the cross sections of the support columns 120 may be equal or different. The number of the supporting columns 120 and the specific positions of the plurality of supporting columns 120 on the back surface of the flocked sheet 100 are not limited in this embodiment, and those skilled in the art can set the supporting columns according to actual needs. Fig. 7-8 show that the soft rubber sleeve 300 covers the back of the hair-planting patch 100, the plurality of support columns 120 can be arranged on the back of the hair-planting patch 100, after the soft rubber sleeve 300 is injection molded, the soft rubber sleeve 300 covers the side walls of the support columns 120, and the outer surface of the soft rubber sleeve 300 is flush with the end surfaces of the support columns 120.

Through setting up a plurality of support columns 120 at tufting piece 100, support column 120 supports the internal surface of mould when soft gum cover 300 is moulding plastics, and support column 120 plays the effect of the location of moulding plastics promptly, prevents that the soft gum from moulding plastics in-process tufting piece 100 and taking place the motion for the mould.

Several implementations of the positioning structure between the bristle-setting plate 100 and the brush head rod 200 are described below, but those skilled in the art should understand that the following specific implementations of the positioning structure should not be considered as specific limitations on the bristle-setting plate 100 and the brush head rod 200.

As shown in fig. 2 to 5 and 9, the second end of the brush head rod 200 is provided with a boss 210 extending from the end of the brush head rod 200, the boss 210 is provided with a positioning hole 220, wherein the positioning hole 220 is located at the middle of the boss 210 and the extending direction of the positioning hole 220 is parallel to the length direction of the brush head rod 200. For example, the boss 210 and the brush head rod 200 may be formed as a single piece through a one-step molding process, thereby ensuring the connection strength between the boss 210 and the brush head rod 200. It should be noted that the outer side of the boss 210 is partially covered by the soft rubber sleeve 300, and the soft rubber sleeve 300 is connected with the brush head rod 200 and the bristle-implanting plate 100 through injection molding.

Correspondingly, one end of the bristle implanting plate 100 facing the brush head rod 200 is provided with a positioning column 110, the positioning column 110 is inserted into the positioning hole 220, and a part of the positioning column 110, namely, a part of the positioning column 110 close to the left side in fig. 4-5, is in interference fit with the positioning hole 220. Preferably, the cross section of the positioning post 110 is rectangular, and correspondingly, the cross section of the positioning hole 220 is also rectangular, so that after the positioning post 110 is inserted into the positioning hole 220 of the boss 210, the positioning post 110 cannot rotate relative to the boss 210, and the stability of the connection between the bristle-implanting plate 100 and the brush head rod 200 is ensured.

As shown in fig. 2 to 5, the sidewall of the boss 210 is formed with an opening 230 communicating with the positioning hole 220, and illustratively, the boss 210 is formed in a "U-shaped configuration" in cross section. Illustratively, the opening 230 of the "U-shaped structure" is toward the back of the head. The opening 230, the right portion of the positioning column 110 in fig. 4-5 and a part of the hole wall of the positioning hole 220 define a feeding channel, and the feeding channel is used for allowing molten soft glue to enter the positioning hole 220 during injection molding. The specific size of the feed channel can be set by those skilled in the art according to actual needs, and the embodiment is not limited herein.

It can be understood by those skilled in the art that the opening 230, another portion of the positioning post 110 and a portion of the hole wall of the positioning hole 220 define a feeding channel, and during the injection molding of the soft rubber sleeve 300, the melted soft rubber can enter the positioning hole 220 from the feeding channel, that is, a portion of the soft rubber sleeve 300 is located between the bristle plate 100 and the brush head rod 200. The soft rubber sleeve 300 located between the bristle-implanting plate 100 and the brush head shaft 200 can make the vibration of the brush head softer, thereby protecting the gum.

Specifically, as shown in fig. 4-5, the positioning column 110 includes a large-size section 111 and a small-size section 112, two ends of the large-size section 111 are respectively fixedly connected to the bristle-implanting sheet 100 and the small-size section 112, the specific sizes of the large-size section 111 and the small-size section 112 are not limited in this embodiment, and those skilled in the art can set the sizes according to actual needs. Accordingly, the opening 230 extends from the top of the boss 210 to the root of the boss 210, and the length of the opening 230 is greater than the length of the large-sized section 111 inserted into the positioning hole 220, that is, the opening 230 is partially opposite to the side wall of the small-sized section 112. As can be understood by those skilled in the art, by forming the feeding channel through the above arrangement, during the injection molding process of the soft gum cover 300, the melted soft gum enters the positioning hole 220 from the portion of the opening 230 opposite to the small-sized section 112, so that the portion of the soft gum cover 300 is located between the bristle-setting plate 100 and the brush head rod 200.

The positioning hole 220 of the boss 210 may be a blind hole or a through hole. When the positioning hole 220 is a blind hole, as shown in fig. 4, a gap is formed between the end of the positioning column 110 and the bottom of the positioning hole 220, and the part of the soft rubber sleeve 300 fills the gap between the positioning column 110 and the bottom of the positioning hole 220, that is, during the injection molding of the soft rubber sleeve 300, the soft rubber flows into the gap between the positioning column 110 and the bottom of the positioning hole 220 and fills the gap.

When the positioning hole 220 is a through hole, as shown in fig. 5, the positioning column 110 is inserted into the first end of the positioning hole 220, and the part of the soft rubber sleeve 300 fills the second end of the positioning hole 220. Fig. 5 shows that the positioning column 110 is inserted into the left end of the positioning hole 220, and during the injection molding process of the soft rubber sleeve 300, the soft rubber flows into the right end of the positioning hole 220 from the feeding channel and fills the right end of the positioning hole 220. Those skilled in the art will understand that the positioning hole 220 is provided as a through hole and the portion of the soft rubber sleeve 300 fills the second end of the positioning hole 220, so that the connection force of the soft rubber, i.e., the reliability of the connection between the bristle-setting plate 100 and the brush head shaft 200, can be improved.

As shown in fig. 4-5 and 7, a flange 130 is disposed at an edge of the back of the bristle-implanting plate 100, and fig. 7 shows that the flange 130 is an annular structure disposed around the edge of the back of the bristle-implanting plate 100, and the soft rubber sleeve 300 covers the flange 130, where the height of the flange 130 is not limited in this embodiment, as long as the soft rubber sleeve 300 can completely cover the flange 130 after injection molding.

As can be understood by those skilled in the art, as shown in fig. 4-5, the soft rubber sleeve 300 covers the boss 210 of the brush head rod 200 and the flange 130 of the bristle-implanting plate 100 at the same time, so as to ensure the reliability of the soft rubber sleeve 300 for connecting the brush head rod 200 and the bristle-implanting plate 100 through injection molding, that is, the part of the soft rubber sleeve 300 located in the positioning hole 220 cannot be separated from the positioning hole 220, and meanwhile, the part of the soft rubber sleeve 300 covers the boss 210 of the brush head rod 200, so as to ensure the reliability of the connection among the bristle-implanting plate 100, the soft rubber sleeve 300 and the brush head rod 200.

In another possible implementation, as shown in fig. 10-11, the brush head is further provided with a metal rod 500, the second end of the brush head rod 200 is provided with a boss 210 extending from the end of the brush head rod 200, and the boss 210 is provided with a positioning hole 220. The bristle implanting piece 100 is provided with a connecting hole on one side facing the brush head rod 200, a first end of the metal rod 500 is inserted into the connecting hole and the first end of the metal rod 500 is in interference fit with the connecting hole, a second end of the metal rod 500 is inserted into the positioning hole 220 and the second end of the metal rod 500 is in interference fit with the positioning hole 220. It should be noted that the cross section of the boss 210 is an annular structure, so that the second end of the metal rod 500 is inserted into the positioning hole 220 and cannot be separated from the sidewall of the positioning hole 220. Fig. 10 shows that the end of the boss 210 is spaced from the end of the bristle-implanted sheet 100, i.e. the middle section of the metal rod 500 is exposed before the soft rubber sleeve 300 is injection-molded.

Illustratively, metal rod 500 includes a first large diameter section, a small diameter section connected to the first large diameter section, and a second large diameter section connected to the small diameter section. First big diameter section cartridge is in the connecting hole of tufting piece 100 to the terminal surface of first big diameter section and the terminal surface parallel and level of tufting piece 100, the cartridge of second big diameter section is in the locating hole 220 of boss 210 and the terminal surface of the big diameter section of second and the terminal surface parallel and level of boss 210, and the little diameter section is located between tufting piece 100 and the brush head pole 200. Further, the sectional shape of the metal rod 500 may be an oblong, so that the bristle-implanted sheet 100 does not rotate with respect to the head rod 200 after the bristle-implanted sheet 100 and the head rod 200 are positioned using the metal rod 500.

Fig. 11 shows that the soft rubber sleeve 300 covers the boss 210 and the portion of the metal rod 500 between the boss 210 and the connection hole, i.e., the small-diameter section. Those skilled in the art can understand that the bristle planting sheet 100 and the brush head rod 200 are positioned by the metal rod 500, on one hand, the metal rod 500 can increase the structural strength of the neck of the brush head, namely, the joint of the bristle planting sheet 100 and the brush head rod 200, on the other hand, the metal rod 500 can play a role of a counterweight, the inertia of the brush head is increased, the swing of the brush head is increased on the basis of not influencing the softness of the vibration of the brush head, and further the cleaning capability of the brush head is improved.

In summary, in the brush head provided by the embodiment, the soft rubber sleeve 300 at least partially covers the head of the brush head body 600, and when the head of the brush head collides with the teeth, the soft rubber sleeve 300 is located between the brush head body 600 and the teeth, so as to protect the teeth; the soft rubber sleeve 300 is an injection molding piece, the soft rubber sleeve 300 and the brush head body 600 are formed into an integrated piece through injection molding, and the reliability of connection between the soft rubber sleeve 300 and the brush head body 600 can be guaranteed.

Example two

On the basis of the first embodiment, the embodiment also provides an electric toothbrush which comprises a handle and the brush head of the first embodiment.

In a possible implementation mode, the handle is of a columnar structure, the driving motor is arranged inside the handle, an output shaft of the driving motor extends out of the end portion of the handle, and the output shaft of the driving motor is inserted into the tail portion of the brush head body. Exemplarily, the tail part of the brush head body is provided with a mounting hole, and an output shaft of the driving motor is inserted into the mounting hole at the tail part of the brush head body. The specific structure of the handle is not limited in this embodiment, and a person skilled in the art can select any suitable handle according to actual needs, and of course, an existing handle on the market can also be selected.

The electric toothbrush that this embodiment provided owing to adopt the brush head among the embodiment one, when the back of brush head and tooth take place to collide with, the effect of damping can be played to the flexible glue cover of brush head, and then protects tooth, promotes user's use and experiences.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if any), and the like, as used herein, refer to an orientation or positional relationship as shown in the drawings, which are used for convenience in describing the present invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A brush head of an electric toothbrush is characterized by comprising a brush head body and a soft rubber sleeve;

the head part of the brush head body is used for fixing bristles;

the soft rubber sleeve at least partially covers the head of the brush head body so as to protect the teeth when the brush head collides with the teeth;

the soft rubber sleeve is an injection molding piece, and the soft rubber sleeve and the brush head body form an integrated piece through injection molding.

2. The brush head of claim 1, wherein the soft rubber sleeve covers the back and/or sides of the head of the brush head body.

3. The brush head of claim 2, wherein the soft rubber sleeve extends to the tail of the brush head body.

4. The brush head according to any one of claims 1 to 3, wherein the brush head body comprises a bristle-implanted sheet for fixing bristles and a brush head rod, a first end of which is used for being fixedly connected with a handle of the electric toothbrush; the soft rubber sleeve covers the hair-planting sheet, and the soft rubber sleeve, the hair-planting sheet and the brush head rod are formed into an integrated piece through injection molding.

5. The brushhead of claim 4, wherein the second end of the brushhead stem is provided with a boss which extends from the end of the brushhead stem, the boss being provided with a locating hole; the boss is wrapped by the soft rubber sleeve;

one end of the bristle planting piece, which faces the brush head rod, is provided with a positioning column, the positioning column is inserted into the positioning hole, and part of the positioning column is in interference fit with the positioning hole;

an opening communicated with the positioning hole is formed in the side wall of the boss, a feeding channel is defined by the opening, the other part of the positioning column and part of the hole wall of the positioning hole, and the feeding channel is used for enabling molten soft rubber to enter the positioning hole during injection molding.

6. The brush head of claim 5, wherein the positioning column comprises a large-size section and a small-size section, and two ends of the large-size section are fixedly connected with the hair-planting sheet and the small-size section respectively; the opening extends from the top of the boss to the root of the boss, and the length of the opening is larger than the length of the large-size section inserted into the positioning hole.

7. The brush head according to claim 6, wherein a flange is arranged at the edge of the back of the bristle-implanting piece, the soft rubber sleeve covers the flange, and the large-size section is fixedly connected with the flange; and/or the presence of a gas in the gas,

the positioning holes are through holes or blind holes.

8. The brushhead of claim 4, further comprising a metal rod, the second end of the brushhead rod being provided with a boss extending from the end of the brushhead rod, the boss being provided with a locating hole;

the brush head comprises a brush head rod, a soft rubber sleeve and a metal rod, wherein one side of the brush head rod, facing the brush head rod, is provided with a connecting hole, the first end of the metal rod is inserted into the connecting hole and is in interference fit with the connecting hole, the second end of the metal rod is inserted into the positioning hole and is in interference fit with the positioning hole, the end part of the boss and the end part of the brush head are arranged at intervals, and the part of the soft rubber sleeve covers the boss and the part of the metal rod, located between the boss and the connecting hole.

9. The brush head according to claim 4, wherein the bristle-implanting plate is further provided with a plurality of supporting columns, and the soft rubber sleeve covers the side walls of the supporting columns; and/or the presence of a gas in the gas,

the outer side of the soft rubber sleeve is provided with a plurality of bulges used for cleaning the tongue coating.

10. An electric toothbrush comprising a handle and a head according to any one of claims 1 to 9;

the toothbrush is characterized in that a driving motor is arranged inside the handle, an output shaft of the driving motor extends out of the end part of the handle, and the output shaft of the driving motor is inserted into the tail part of the toothbrush head body.

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