CN217723777U - Electric tooth brush - Google Patents

Abstract

The embodiment of the application relates to articles for daily use technical field provides an electric toothbrush, includes: the toothbrush comprises a toothbrush rod and a brush head part positioned at the end part of the toothbrush rod, wherein bristles are arranged on the peripheral surface of the brush head part, and a rotating shaft connected with the brush head part is arranged in the toothbrush rod; the toothbrush handle comprises a handle and a switch, wherein the handle is connected with the other end of the toothbrush rod, the switch is arranged on the handle, a containing cavity is formed in the handle, a rotating shaft extends to the outside of the handle from the containing cavity, a motor is arranged in the containing cavity, and the switch is used for controlling the motor to drive the rotating shaft to rotate so as to drive the brush head part to rotate around the rotating shaft in an axial direction relative to the toothbrush rod; the arc protecting crust in the brush hair outside is located to the cover, and the arc protecting crust is fixed mutually with the toothbrush pole, and has the opening that runs through the arc protecting crust along the axial of axis of rotation, and partial brush hair is exposed by the opening, and the position of brush head portion periphery is lower than the position of the terminal surface in the arc protecting crust that the opening exposes. The embodiment of the application is beneficial to efficiently cleaning teeth and simultaneously reducing the damage of the toothbrush to the teeth.

Description

Electric tooth brush

Technical Field

The embodiment of the application relates to the technical field of articles for daily use, in particular to an electric toothbrush.

Background

Tooth brushing is an essential tooth cleaning link in daily life of everyone, the scientific tooth brushing times are 3 times per day, and the scientific tooth brushing time is at least 3 minutes per time, but the rapid pace of modern life enables oral cleaning in some cases to be replaced by chewing gum. Therefore, if the tooth brushing time can be greatly reduced on the premise of ensuring the tooth brushing effect, the tooth brushing device has important significance for the oral health of the public.

The electric toothbrush is an oral cavity cleaning tool beneficial to reducing the tooth brushing time, and the toothbrush head is driven to move at a high speed mainly by an internal motor, so that the toothbrush bristles and the surfaces of teeth move at a relatively high speed, and then food residues and dental calculus are removed by friction under the action of water and toothpaste, and the teeth are cleaned. However, the existing electric toothbrush has the problems of poor cleaning effect or tooth abrasion.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an electric toothbrush which is at least beneficial to efficiently cleaning teeth and simultaneously reduces damage of the toothbrush to the teeth.

The embodiment of the application provides an electric toothbrush includes: the toothbrush comprises a toothbrush rod and a brush head part positioned at the end part of the toothbrush rod, wherein bristles are arranged on the peripheral surface of the brush head part, and a rotating shaft connected with the brush head part is arranged in the toothbrush rod; the toothbrush comprises a handle connected with the other end of a toothbrush rod and a switch arranged on the handle, wherein an accommodating cavity is formed in the handle, a rotating shaft extends out of the handle from the accommodating cavity, a motor is arranged in the accommodating cavity, and the switch is used for controlling the motor to drive the rotating shaft to rotate so as to drive the brush head part to axially rotate around the rotating shaft relative to the toothbrush rod; the arc protecting crust in the brush hair outside is located to the cover, and the arc protecting crust is fixed mutually with the toothbrush pole, and has the opening that runs through the arc protecting crust along the axial of axis of rotation, and partial brush hair is exposed by the opening, and the position of brush head portion periphery is lower than the position of the terminal surface in the arc protecting crust that the opening exposes.

In some embodiments, the arc shield has a reinforcing rib disposed around an outer sidewall of the arc shield adjacent the opening.

In some embodiments, the outer side wall of the arc-shaped protective shell is a circular arc surface.

In some embodiments, the arc-shaped protective shell is a transparent structure.

In some embodiments, the side of the arc-shaped protective shell far away from the opening is provided with a cleaning hole penetrating through the side wall of the arc-shaped protective shell, and the minimum spacing distance between the cleaning hole and the brush head part is larger than the maximum length of the bristles.

In some embodiments, a replaceable toothpaste container and a conduit connected with the toothpaste container are further arranged in the accommodating cavity, one end of the conduit, which is far away from the toothpaste container, is in contact with the brush head part, and a valve is arranged on the handle and is used for disconnecting or conducting a path for toothpaste in the toothpaste container to move to the brush head part through the conduit.

In some embodiments, the bristles differ in length in the direction of extension of the bristles, and in an axial direction parallel to the axis of rotation, a row of bristles is distributed in a wavy pattern away from the tip of the brush head.

In some embodiments, the least long bristles and the longest long bristles extend in a direction perpendicular to the axial direction of the rotational axis in the direction in which the bristles extend, with the remaining bristles extending away from the tip of the brush head toward the adjacent longest length bristles.

In some embodiments, the switch has a clockwise rotation flag and a counterclockwise rotation flag, and a spring is provided within the switch to return the switch.

In some embodiments, a rechargeable battery is disposed within the receiving cavity, and the electric toothbrush further includes a charging base for charging the rechargeable battery.

The technical scheme provided by the embodiment of the application has at least the following advantages:

in the above technical solution, an electric toothbrush includes: toothbrush rod, the brush head portion of toothbrush rod one end and the handle of the toothbrush rod other end, hold the chamber in the handle, it is provided with the rotatory motor of axis of rotation in the drive toothbrush rod to hold the intracavity, the motor makes the axis of rotation drive brush head portion revolute the axial rotation of axis of rotation for toothbrush rod, and then make the brush hair revolute the axial rotation of axis of rotation for toothbrush rod, the pivoted brush hair has two kinds of each other for reverse direction of rotation, two kinds of each other can be clockwise rotation direction and anticlockwise rotation direction for reverse direction of rotation respectively, make brush head portion rotatory and select clockwise rotation direction or anticlockwise rotation direction through the switch on the adjustment handle, different direction of rotation and the tooth of different positions match, realize cleaning the tooth of different positions along the direction that the tooth extends, direction along the slit between teeth is cleaned, so, be favorable to improving the clean effect to the tooth, and do benefit to avoiding the brush hair to form reverse bulldozing to the gum, avoid the brush hair to cause the damage to the gum. In addition, the brush hair outside cover of brushhead portion is equipped with the arc protecting crust, and the opening of arc protecting crust exposes partial brush hair, so, electric toothbrush during operation, with the opening and the tooth laminating of arc protecting crust, rotatory brush hair can pass through opening and tooth contact, and the brush hair that the surplus is located the region beyond the opening is covered by the arc protecting crust, can avoid rotatory brush hair to cause the scratch to other positions in the oral cavity, and then is favorable to avoiding causing the damage to other positions in the oral cavity. Moreover, the position of the periphery of the rotating brush head part is lower than the end face of the arc-shaped protective shell at the opening, so that the opening of the arc-shaped protective shell is attached to teeth, the rotating brush head part cannot be exposed even if the electric toothbrush is pressed forcefully, and the abrasion of the rotating brush head part with high hardness to the teeth is avoided.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings which correspond to and are not to be construed as limiting the embodiments, in which elements having the same reference numeral designations represent like elements throughout, and in which the drawings are not to be construed as limiting in scale unless otherwise specified.

FIG. 1 is a cross-sectional view of an electric toothbrush provided in accordance with an embodiment of the present application;

FIG. 2 is a schematic view of an electric toothbrush according to an embodiment of the present application;

FIG. 3 is a schematic view of a bristle structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of another bristle configuration provided by an example of the present application;

FIG. 5 is a cross-sectional view of a brush head portion provided in an embodiment of the present application, taken perpendicular to the axial direction of the rotatable shaft;

FIG. 6 is a schematic view of the rotational orientation of a powered toothbrush according to an embodiment of the present application;

fig. 7 is a schematic structural view of another electric toothbrush provided in the embodiments of the present application.

Detailed Description

As is known from the background art, the conventional electric toothbrush has problems of poor cleaning effect or tooth abrasion.

It is found that the existing electric toothbrush is usually provided with a toothbrush head driven by a motor to swing, so that the bristles on the toothbrush head continuously rub against the tooth surface to remove dirt on the tooth surface. Also, the brush head reciprocating makes it easy for the bristles to reversely damage the gums.

Another existing electric toothbrush is a sonic toothbrush that uses an electromagnetically driven toothbrush head to vibrate at high frequency to clean teeth. Sonic toothbrushes, although having little damage to teeth due to the small amplitude of vibration of bristles and primarily the generation of bubbles by sound waves to clean teeth, have poor cleaning ability and are expensive to manufacture.

In order to solve the above problems, an embodiment of the present invention provides an electric toothbrush, a containing cavity is provided in a handle of the electric toothbrush, a + rotation shaft connected to a brush head portion is provided in a toothbrush rod, a motor for driving the rotation shaft in the toothbrush rod to rotate is provided in the containing cavity, the motor drives the brush head portion to rotate axially around the rotation shaft relative to the toothbrush rod by the rotation shaft, and further the bristles rotate axially around the rotation shaft relative to the toothbrush rod, the rotated bristles have two opposite rotation directions, namely, a clockwise rotation direction and an anticlockwise rotation direction, when brushing teeth, the brush head portion rotates and selects the clockwise rotation direction or the anticlockwise rotation direction by adjusting a switch on the handle, so that different rotation directions are matched with teeth at different positions, and further the teeth at different positions are cleaned along a direction in which the teeth extend, that is, the teeth are cleaned along a direction between the teeth, which is beneficial to improving a cleaning effect on the teeth, and is beneficial to avoiding reverse pushing and pressing of the bristles on gum, and avoiding damage of the bristles to gum. In addition, the brush hair outside cover of brushhead portion is equipped with and has open-ended arc protecting crust, and the opening exposes partial brush hair, so, electric toothbrush during operation, with the opening and the tooth laminating of arc protecting crust, rotatory brush hair can pass through opening and tooth contact, and the brush hair that the surplus lies in the region beyond the opening is covered by the arc protecting crust, can avoid rotatory brush hair to cause the scratch to other positions in the oral cavity, and then is favorable to avoiding causing the damage to other positions in the oral cavity. In addition, the position of the periphery of the rotating brush head part is lower than the end face of the arc-shaped protective shell at the opening, so that after the opening of the arc-shaped protective shell is attached to teeth, the opening is not exposed out of the rotating brush head part even if the electric toothbrush is pressed forcefully, and the abrasion of the rotating brush head part with high hardness to the teeth is avoided.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the examples of the present application, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

FIG. 1 is a cross-sectional view of an electric toothbrush provided in accordance with an embodiment of the present application; FIG. 2 is a schematic view of an electric toothbrush according to an embodiment of the present application; FIG. 3 is a schematic view of a bristle structure according to an embodiment of the present disclosure; FIG. 4 is a schematic view of another bristle configuration provided by an example of the present application; FIG. 5 is a cross-sectional view of a brush head portion provided in an embodiment of the present application, taken perpendicular to the axial direction of the rotatable shaft; FIG. 6 is a schematic view of the rotational orientation of a powered toothbrush according to an embodiment of the present application; fig. 7 is a schematic structural view of another electric toothbrush provided in the embodiments of the present application.

Referring to fig. 1 and 2, the electric toothbrush includes: a toothbrush rod 100 and a brush head part 110 positioned at an end of the toothbrush rod 100, the brush head part 110 having bristles 111 on an outer circumferential surface thereof, the toothbrush rod 100 having a rotation shaft 101 therein connected to the brush head part 110; a handle 120 connected to the other end of the toothbrush rod 100 and a switch 121 disposed on the handle 120, wherein the handle 120 has an accommodating cavity 122 therein, the rotating shaft 101 extends from the accommodating cavity 122 to the outside of the handle 120, a motor 123 is disposed in the accommodating cavity 122, and the switch 121 is used for controlling the motor 123 to drive the rotating shaft 101 to rotate, so as to drive the brush head part 110 to rotate around the rotating shaft 101 in the axial direction relative to the toothbrush rod 100; the arc-shaped protective shell 112 is sleeved outside the bristles 111, the arc-shaped protective shell 112 is fixed to the toothbrush rod 100 and has an opening 113 penetrating through the arc-shaped protective shell 112 along the axial direction of the rotating shaft 101, a part of the bristles 111 is exposed by the opening 113, and the position of the periphery of the brush head part 110 is lower than the position of the end surface of the arc-shaped protective shell 112 exposed by the opening 113. When brushing teeth, the motor drives axis of rotation 101 rotatory, and then make axis of rotation 101 drive brush head portion 110 for toothbrush rod 100 around the axial rotation of axis of rotation 101, it is specific, brush hair 111 of brush head portion 110 has two kinds of rotation directions that are reverse each other, be clockwise rotation direction and anticlockwise rotation direction respectively, switch 121 through adjustment handle 120 makes brush head portion 110 rotatory and select clockwise rotation direction or anticlockwise rotation direction, make different rotation directions and the tooth matching of different positions, and then realize cleaning the tooth of different positions along the direction that the tooth extends, clean along the direction of slit between teeth promptly, so, be favorable to improving the cleaning effect to the tooth, and do benefit to avoiding brush hair 111 to form reverse bulldozing to the gum, avoid brush hair 111 to cause the damage to the gum. In addition, the opening 113 of the arc-shaped protective shell 112 is attached to teeth, the rotating bristles 111 can be contacted with the teeth through the opening 113, the remaining bristles 111 outside the opening 113 are covered by the arc-shaped protective shell 112, the rotating bristles 111 can be prevented from scratching other parts in the oral cavity, and further damage to other parts in the oral cavity can be avoided. The position of the periphery of the rotating brush head part 110 is lower than the end surface of the arc-shaped protective shell 112 at the opening 113, so that after the opening 113 of the arc-shaped protective shell 112 is attached to the teeth, even if the electric toothbrush is pressed forcibly, the opening 113 can not expose the rotating brush head part 110, and the abrasion of the rotating brush head part 110 with high hardness to the teeth can be avoided.

Specifically, the toothbrush rod 100 is a transition and connection between the brush head part 110 and the handle 120, and the toothbrush rod 100 has a tubular structure, and in some embodiments, the toothbrush rod 100 may have a round tubular structure, and the outer wall of the toothbrush rod 100 having the round tubular structure has a smooth surface, which is beneficial to cleaning the outer wall of the toothbrush rod 100 and avoiding scratching the hand during use due to the edge-shaped outer wall. It will be appreciated that in other embodiments, the toothbrush bar 100 may also be a square tubular structure or other shaped tubular structure. When the toothbrush rod 100 is of other tubular structures, the prismatic structure of the outer wall of the toothbrush rod 100 is a rounded prismatic structure, which is also beneficial to avoid scratching the hand during use.

In some embodiments, the material of the toothbrush rod 100 may be a polypropylene material, which is a thermoplastic material, and the polypropylene material has the characteristics of good toughness, high strength, good heat insulation, light weight, corrosion resistance, low cost, and recyclability. The use of the polypropylene material for the toothbrush rod 100 is advantageous in reducing the manufacturing cost of the toothbrush rod 100 and in extending the lifespan of the toothbrush rod 100.

Referring to fig. 1, a rotation shaft 101 in a toothbrush rod 100 is connected to a brush head part 110 through the toothbrush rod 100 for rotating the brush head part 110. In some embodiments, the rotating shaft 101 may be cylindrical, and the type of the motor 123 matched with the cylindrical shaft is more common, and the cylindrical rotating shaft 101 is beneficial to reduce the assembly difficulty of the electric toothbrush. In other embodiments, the rotating shaft 101 may also be a square column or other column structure.

Referring to fig. 1 to 4, the brush head 110 is used for arranging the bristles 111, specifically, the bristles 111 are arranged around the brush head 110 in a circle, in some embodiments, referring to fig. 3, the bristles 111 have different lengths in the extending direction of the bristles 111, and in the axial direction parallel to the rotating shaft 101, a row of the bristles 111 is distributed in a wave shape away from the top end of the brush head 110. Bristles 111 of different lengths are beneficial for cleaning teeth in different positions, specifically, bristles 111 of longer lengths can better clean interdental spaces, and bristles 111 of shorter lengths are beneficial for cleaning tooth surfaces.

In some embodiments, the bristles 111 with longer length are softer than the bristles 111 with shorter length, which is beneficial to prevent the bristles 111 with higher hardness and longer length from wearing the gums and the bristles 111 with higher hardness and longer length from obstructing the bristles 111, i.e., the bristles 111 with longer length can reduce the pressing force when the bristles 111 with shorter length are attached to the teeth, thereby reducing the difficulty of using the electric toothbrush.

In some embodiments, referring to fig. 3, in the extending direction of the bristles 111, the bristles 111 having the smallest length and the bristles 111 having the longest length extend in a direction perpendicular to the axial direction of the rotating shaft 101, and the remaining bristles 111 extend away from the tip of the head part 110 toward the adjacent bristles 111 having the longest length. Thus, the shorter bristles 111 extending toward the tips of the longest bristles 111 in the extending direction of the bristles 111 are inclined, and the inclined bristles 111 are advantageous for better cleaning of interdental spaces at different angles. In other embodiments, the bristles 111 may each extend in a direction perpendicular to the axial direction of the rotating shaft 101.

In some embodiments, referring to fig. 4, the bristles 111 with shorter length extend in a direction perpendicular to the axial direction of the rotating shaft 101, and the bristles 111 with longer length are inclined toward the bristles 111 with shorter length arranged at intervals based on the bristles 111 with shorter length arranged at intervals, so that the bristles 111 with longer length are inclined while the brush head part 110 is ensured to have the bristles 111 with different lengths, which is beneficial to improving the cleaning capability of the electric toothbrush to interdental spaces.

Referring to fig. 1, the handle 120 connected to an end of the toothbrush bar 100 remote from the head portion 110 is a hand-held portion of the electric toothbrush, and the outer peripheral shape of the handle 120 may be cylindrical. In some embodiments, the outer periphery of the handle 120 may also be shaped as a square column or other shaped cylindrical structure.

With continued reference to fig. 1, the handle 120 has a receiving cavity 122 for accommodating other structures of the electric toothbrush therein, the end of the handle 120 facing the toothbrush rod 100 has a mounting hole penetrating through the outer wall of the handle 120 and communicating with the receiving cavity 122, and the rotating shaft 101 in the toothbrush rod 100 penetrates through the mounting hole and extends into the receiving cavity 122 to be rotatably connected with the motor 123 in the receiving cavity 122.

Referring to fig. 1 to 2, the outer wall of the handle 120 is provided with a switch 121 for controlling the rotation of the brush head portion 110, specifically, when the electric toothbrush is not in use, the switch 121 is located at the reset position, the switch 121 has two pushing directions, and if the electric toothbrush starts to work, the switch 121 is pushed in one pushing direction, so that the motor 123 drives the rotating shaft 101 to rotate along the axial direction of the rotating shaft 101, and further the brush head portion 110 rotates along the axial direction of the rotating shaft 101. Moreover, the rotation directions of the brush head 110 corresponding to different pushing directions are different, and the two different rotation directions are opposite and can be a clockwise rotation direction and a counterclockwise rotation direction, respectively. The rotation direction of the brush head 110 can be controlled to enable the bristles 111 to clean teeth at different positions along the extending direction of the teeth, for example, referring to fig. 6, if the user cleans the outer side of the upper row of teeth, the bristles 111 attached to one side of the teeth can be rotated from top to bottom.

In some embodiments, referring to fig. 2, the switch 121 has a clockwise rotation mark 151 and a counterclockwise rotation mark 150, and a spring is provided within the switch 121 to reset the switch 121. The user can select the pushing direction of the switch 121 according to the clockwise rotation mark and the anticlockwise rotation mark on the switch 121, and the use convenience of the electric toothbrush can be improved. Moreover, when the switch 121 has an external force, the spring in the switch 121 can stabilize the operating position for controlling the rotation of the brush head portion 110, and the external force acting on the switch 121 is cancelled, so that the switch 121 can automatically return to the reset position, and the brush head portion 110 immediately stops rotating. The advantages of such an arrangement are: even if the user forgets to push the switch 121 to the reset position due to negligence, the switch 121 can be automatically reset, which is beneficial to avoiding additional power consumption and improving the use convenience of the electric toothbrush.

In some embodiments, the rotation speed of the brush head portion 110 may be controlled by the displacement degree of the switch 121 in different pushing directions, and the larger the displacement of the switch 121 in the pushing direction is, the faster the rotation speed of the brush head portion 110 is, so that a user can simply and conveniently adjust the rotation speed of the brush head portion 110, and further adjust the cleaning strength of teeth, which is beneficial to improving the convenience of the electric toothbrush.

In some embodiments, referring to fig. 1, a replaceable toothpaste container 130 and a conduit 131 connected to the toothpaste container 130 are further disposed in the accommodating chamber 122, an end of the conduit 131 away from the toothpaste container 130 is in contact with the brush head portion 110, and a valve (not shown) is disposed on the handle 120 and is used for opening or closing a path for toothpaste in the toothpaste container 130 to move to the brush head portion 110 through the conduit 131.

The replaceable toothpaste container 130 is used for placing toothpaste, the conduit 131 between the brush head part 110 and the toothpaste container 130 is used for conducting the toothpaste in the toothpaste container 130 to the brush head part 110, when the toothpaste is not needed to be used, the valve on the control handle 120 cuts off the path of the toothpaste in the toothpaste container 130 moving to the brush head part 110 through the conduit 131, the toothpaste in the toothpaste container 130 can be sealed, and the toothpaste in the toothpaste container 130 is favorably prevented from being polluted or being dried by air. When the toothpaste is needed to be used, the valve on the control handle 120 conducts the path of the toothpaste in the toothpaste container 130 moving to the brush head 110 through the conduit 131, and the toothpaste in the toothpaste container 130 can be extruded to the brush head 110 through the conduit 131. After the toothpaste in the toothpaste container 130 is exhausted, the empty toothpaste container 130 is replaced by the toothpaste container 130 with the full toothpaste, so that the toothpaste can be conveniently supplemented. In addition, the electric toothbrush with the toothpaste container 130 enables a user to clean teeth only by carrying the electric toothbrush without carrying toothpaste when the user needs to go out, which is beneficial to saving time for preparing a dental appliance and enables the electric toothbrush to be more suitable for a use scene of going out for carrying. It will be appreciated that in some use scenarios, toothpaste may also be squeezed directly onto the bristles 111 of the brush head 110.

In some embodiments, referring to fig. 1, a rechargeable battery 124 is also disposed within the receiving cavity 122, and the electric toothbrush further includes a charging base 141 for charging the rechargeable battery 124. A rechargeable battery 124 located in the receiving cavity 122 is connected to the motor 123 for supplying power to the motor 123, and a charging base 141 is used for charging the rechargeable battery. Wherein, the rechargeable battery 124 is connected with a wireless charging receiving device, and the wireless charging receiving device is located at one end of the handle 120 far away from the brush head part 110. When the end of the handle 120 with the wireless charging receiving device is close to the charging base 141, the charging base 141 and the wireless charging receiving device can establish a wireless charging channel, so as to charge the rechargeable battery 124.

In some embodiments, the handle 120 has a retractable charging plug at an end thereof remote from the brush head portion 110, the retractable charging plug is connected to the rechargeable battery 124, the charging base 141 has a power jack, and the rechargeable battery 124 can be charged by inserting the retractable charging plug into the power jack of the charging base 141. In other embodiments, the end of the handle 120 remote from the brushhead portion 110 has a charging jack for connecting to a rechargeable battery 124, and the electric toothbrush has a removable charging cord that can be used to connect the charging jack to an electrical outlet, i.e., to recharge the rechargeable battery 124.

Referring to fig. 1 to 2 and 5 to 7, the brush head part 110 of the electric toothbrush is further sleeved with an arc-shaped protective shell 112, the arc-shaped protective shell 112 is fixed to one end of the toothbrush rod 100 away from the handle 120, one end of the arc-shaped protective shell 112 away from the toothbrush rod 100 is provided with a toothbrush top cover, and one end of the brush head part 110 away from the toothbrush rod 100 is rotatably contacted with the inner wall of the toothbrush top cover facing the brush head part 110. In some embodiments, the inner wall of the toothbrush top cover facing the brush head part 110 has a groove, and the end of the brush head part 110 away from the toothbrush rod 100 is embedded in the groove, which is beneficial to prevent the brush head part 110 from tilting relative to the rotation shaft 101 under the action of external force, and is further beneficial to prevent the tilted brush head part 110 from causing a poor cleaning effect on teeth.

Referring to fig. 2, in some embodiments, the opening 112 of the arc-shaped protective shell 112 may be a square opening with rounded angles. In some embodiments, referring to fig. 7, the opening 112 of the arc-shaped protective shell 112 may also be an elliptical opening.

In some embodiments, referring to fig. 1 and 5, the arc shield 112 has a reinforcing rib 114, the reinforcing rib 114 being disposed around an outer sidewall of the arc shield 112 adjacent to the opening 113. Because when pressing close to the tooth with brush head portion 110, be the terminal surface and the tooth of arc protecting shell 112 opening 113 department contact, be cavity formula design again in the arc protecting shell 112, after the repetitious usage, the terminal surface of arc protecting shell 112 opening 113 department easily takes place deformation, consequently, set up on arc protecting shell 112 and strengthen arris 114, be favorable to the increase to be close to the thickness of arc protecting shell 112 of opening 113 department, the great arc protecting shell 112 stability of thickness is higher, difficult emergence deformation.

In some embodiments, referring to fig. 1 and 5, the outer sidewall of the arc-shaped protective shell 112 is a circular arc surface. The arc-shaped protective shell 112 with the outer side wall of the arc surface can prevent the arc-shaped protective shell 112 placed in the oral cavity from scratching the gum or tongue and the like in the oral cavity in the process of brushing teeth. In other embodiments, the outer sidewall of the arc-shaped protective shell 112 may also have a rounded corner-like structure.

In some embodiments, the arc guard 112 is a transparent structure. The transparent arc-shaped protective shell 112 is convenient for a user to directly observe the rotation state of the brush head part 110 bristles 111 on one hand, and further adjusts the rotation state of the brush head part 110 bristles 111; on the other hand, the transparent arc-shaped protective shell 112 facilitates observation of the cleanliness of the bristles 111, the brush head part 110 and the inner wall of the arc-shaped protective shell 112, thereby facilitating a user to judge whether the electric toothbrush needs cleaning or replacement according to the cleanliness.

In some embodiments, referring to fig. 5, the side of the arc-shaped protective shell 112 away from the opening 113 has a cleaning hole 115 penetrating through the side wall of the arc-shaped protective shell 112, and the minimum spacing distance between the cleaning hole 115 and the brush head 110 is greater than the maximum length of the bristles 111. Cleaning hole 115 on arc protecting crust 112 is favorable to reducing the inside difficulty of cleaning arc protecting crust 112 under the condition that does not expose brush hair 111, and is specific, can dip brush head portion 110 into clear water, push switch 121 makes brush head portion 110 rotatory, and the cleaning hole 115 of arc protecting crust 112 inner wall makes the dirt be not restricted to flowing out from opening 113, is favorable to the discharge of arc protecting crust 112 inner wall dirt.

In some embodiments, the minimum distance between the cleaning hole 115 and the head 110 is less than the maximum length of part of the bristles 111, but the opening gap of the cleaning hole 115 is less than the diameter of the bristles 111 in the direction perpendicular to the extending direction of the bristles 111, so as not to expose the bristles 111 from the cleaning hole 115, and thus, the cleaning hole 115 can be arranged to reduce the difficulty of cleaning the inside of the arc-shaped protective shell 112 without exposing the bristles 111.

In some embodiments, the inner wall of the arc-shaped protective shell 112 has a stainless steel alloy film, and the stainless steel alloy film is made of food-grade inorganic antibacterial material, which is beneficial to effectively inhibiting bacteria on the inner wall of the arc-shaped protective shell 112. In other embodiments, the stainless steel alloy film may be a copper-containing alloy film or a silver-containing alloy film, which is also beneficial for effectively inhibiting bacteria on the inner wall of the arc-shaped protective shell 112.

In some embodiments, the arc-shaped protective shell 112 and the brush head portion 110 are detachable structures, which is beneficial to reducing the cost waste caused by replacing the whole electric toothbrush.

The above embodiment provides an electric toothbrush comprising: toothbrush pole 100 and brush head 110 of toothbrush pole 100 one end, brush head 110 has brush hair 111, be provided with motor 123 in the holding chamber 122 of the handle 120 of toothbrush pole 100 other end, motor 123 is used for driving the axis of rotation 101 in the toothbrush pole 100 rotatory, make axis of rotation 101 drive brush head 110 revolve around the axial of axis of rotation 101, brush head 110 pivoted brush hair 111 has two kinds of directions that are reverse rotation each other, two kinds of rotation directions that are reverse each other can be clockwise rotation direction and anticlockwise rotation direction respectively, when brushing teeth, switch over clockwise rotation direction or anticlockwise rotation direction through switch 121 on the adjustment handle 120, make different rotation directions and the tooth matching of different positions, and then realize cleaning the tooth of different positions along the direction that the tooth extends, clean the direction along the tooth that extends to the tooth, namely along the direction of slit between teeth, so, not only be favorable to improving the cleaning effect, still be favorable to avoiding brush hair 111 to form reverse bulldozing to the gum, be favorable to avoiding causing the damage to the gum. In addition, the outer side of the bristles 111 of the brush head part 110 is sleeved with the arc-shaped protective shell 112, and the opening 113 of the arc-shaped protective shell 112 exposes part of the bristles 111, so that when the electric toothbrush works, the opening 113 of the arc-shaped protective shell 112 is attached to teeth, the rotating bristles 111 can be contacted with the teeth through the opening 113, the rest bristles 111 in the region outside the opening 113 are covered by the arc-shaped protective shell 112, and the rotating bristles 111 can be prevented from scratching other parts in the oral cavity. Moreover, the position of the periphery of the rotating brush head part 110 is lower than the end surface of the arc-shaped protective shell 112 at the opening 113, so that after the opening 113 of the arc-shaped protective shell 112 is attached to the teeth, the opening 113 can not expose the rotating brush head part 110 even if the electric toothbrush is pressed forcefully, and the abrasion of the rotating brush head part 110 with high hardness to the teeth can be avoided.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An electric toothbrush, comprising:

the toothbrush comprises a toothbrush rod and a brush head part positioned at the end part of the toothbrush rod, wherein bristles are arranged on the peripheral surface of the brush head part, and a rotating shaft connected with the brush head part is arranged in the toothbrush rod;

the toothbrush comprises a handle and a switch, wherein the handle is connected with the other end of the toothbrush rod, the switch is arranged on the handle, an accommodating cavity is formed in the handle, a rotating shaft extends from the accommodating cavity to the outside of the handle, a motor is arranged in the accommodating cavity, and the switch is used for controlling the motor to drive the rotating shaft to rotate so as to drive the brush head to axially rotate around the rotating shaft relative to the toothbrush rod;

the toothbrush comprises a brush head part and a toothbrush rod, wherein the brush head part is sleeved with an arc-shaped protective shell outside the brush hair, the arc-shaped protective shell is fixed with the toothbrush rod and is provided with an opening which penetrates through the arc-shaped protective shell along the axial direction of the rotating shaft, part of the brush hair is exposed out of the opening, and the position of the periphery of the brush head part is lower than that of the end surface of the arc-shaped protective shell exposed out of the opening.

2. The electric toothbrush according to claim 1, wherein the arc-shaped shield has a reinforcing rib disposed around an outer side wall of the arc-shaped shield adjacent to the opening.

3. The electric toothbrush of claim 1, wherein the outer side wall of the arc-shaped protective case is a circular arc surface.

4. The electric toothbrush of claim 1, wherein the arc-shaped protective shell is a transparent structure.

5. The electric toothbrush according to claim 1, wherein the side of the arc-shaped shield away from the opening has a cleaning hole extending through the side wall of the arc-shaped shield, and the minimum distance between the cleaning hole and the brush head portion is greater than the maximum length of the bristles.

6. The electric toothbrush as claimed in claim 1, wherein a replaceable toothpaste container and a conduit connected to the toothpaste container are further disposed in the accommodating chamber, an end of the conduit away from the toothpaste container is in contact with the brush head portion, and a valve is disposed on the handle for opening or closing a path for toothpaste in the toothpaste container to move to the brush head portion through the conduit.

7. The electric toothbrush according to claim 1, wherein said bristles have different lengths in a direction in which said bristles extend, and a row of said bristles is waved away from a tip end of said head portion in an axial direction parallel to said rotational axis.

8. The electric toothbrush according to claim 6, wherein in the extending direction of said bristles, said bristles having the smallest length and said bristles having the longest length extend in a direction perpendicular to the axial direction of said rotational shaft, and the remaining bristles extend toward the adjacent bristles having the longest length away from the tip of said head portion.

9. The electric toothbrush of claim 1, wherein the switch has a clockwise rotation flag and a counterclockwise rotation flag, and the switch has a spring therein to return the switch.

10. The electric toothbrush of claim 1, wherein a rechargeable battery is further disposed within the receiving cavity, the electric toothbrush further comprising a charging base for charging the rechargeable battery.

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