KR102626201B1 - Elastic toothbrush for easy brushing and Elastic Mechanism - Google Patents

Abstract

A brushing guide and elastic toothbrush are provided. The elastic toothbrushing guide toothbrush includes: a toothbrush head portion provided with toothbrush bristles on an outer peripheral surface of one side in the longitudinal direction; a toothbrush handle portion connected to the longitudinal rear end of the toothbrush head portion and extending in one direction so that the user can hold it with his or her hand; And an elastic rotation restoration part provided between the toothbrush head and the toothbrush handle, allowing rotation of the toothbrush handle and rotation of the toothbrush head based on the rotation of the toothbrush handle, wherein the toothbrush bristles are aligned with the user's position. When force is applied to the toothbrush handle by the user such that the toothbrush handle is rotated in one direction about the longitudinal axis in a state of pressurized contact with the teeth or gums, the elastic rotation restoration unit rotates the toothbrush handle. Allowed, but storing the rotational force generated by the toothbrush handle portion, and in a state in which the rotational force generated by the toothbrush handle portion is stored in the elastic rotation restoration portion, the pressure and adhesion of the toothbrush bristles from the user's teeth or gums is released. In this case, the elastic rotation restoration unit rotates the toothbrush head in the same direction as the toothbrush handle and provides the stored rotational force to the toothbrush head so that the teeth or gums can be brushed by the toothbrush bristles. .

Description

Toothbrushing guide elastic toothbrush and elastic restoration mechanism {Elastic toothbrush for easy brushing and Elastic Mechanism}

The present invention relates to a toothbrushing guide elastic toothbrush, and more specifically, to a toothbrushing guide elastic toothbrush that guides the user to easily perform a rotational method when brushing teeth.

The present invention relates to an elastic restoration mechanism, and more specifically, to a mechanism that provides elastic twist and elastic restoration force along the longitudinal axis.

The rotation method while brushing refers to a method of brushing from the gums to the teeth while rotating the wrist holding the toothbrush.

More specifically, the rotation method refers to a method of holding the toothbrush so that it faces the gums and rotating the wrist to brush the upper teeth in a downward direction and the lower teeth in a downward-to-upward direction.

However, the rotational method of brushing was difficult to use in actual brushing due to the difficulty of the brushing motion.

One technical problem to be solved by the present invention is to provide an elastic toothbrush guide for toothbrushing, which guides the user to easily perform the rotation method when brushing teeth.

Another technical problem to be solved by the present invention is to provide a toothbrushing guide elastic toothbrush that can stimulate a young child's interest in brushing teeth.

Another technical problem to be solved by the present invention is to provide an elastic restoration mechanism.

The technical problems to be solved by the present invention are not limited to those described above.

An elastic restoration mechanism according to an embodiment of the present invention and a toothbrush applied to the mechanism include a toothbrush head portion provided with toothbrush bristles on one outer peripheral surface in the longitudinal direction; a toothbrush handle portion connected to the longitudinal rear end of the toothbrush head portion and extending in one direction so that the user can hold it with his or her hand; And an elastic rotation restoration part provided between the toothbrush head and the toothbrush handle, allowing rotation of the toothbrush handle and rotation of the toothbrush head based on the rotation of the toothbrush handle, wherein the toothbrush bristles are aligned with the user's position. When force is applied to the toothbrush handle by the user such that the toothbrush handle is rotated in one direction about the longitudinal axis in a state of pressurized contact with the teeth or gums, the elastic rotation restoration unit rotates the toothbrush handle. Allowed, but storing the rotational force generated by the toothbrush handle portion, and in a state in which the rotational force generated by the toothbrush handle portion is stored in the elastic rotation restoration portion, the pressure and adhesion of the toothbrush bristles from the user's teeth or gums is released. In this case, the elastic rotation restoration unit converts the stored torsional energy into a restoring rotational force on the toothbrush head so that the tooth or gums can be brushed by the toothbrush bristles while the toothbrush head rotates in the same direction as the toothbrush handle. It can be released.

According to one embodiment, the elastic rotation restoration unit rotates clockwise about the longitudinal axis when force is applied to the toothbrush handle by the user so that the toothbrush handle rotates clockwise about the longitudinal axis and the toothbrush handle rotates clockwise about the longitudinal axis. When force is applied to the toothbrush handle by the user to rotate clockwise, corresponding restoration rotational forces can be provided.

According to one embodiment, the elastic rotation allowing portion may have an elastic modulus smaller than at least one of the toothbrush head portion and the toothbrush handle portion.

According to one embodiment, the elastic rotation allowing portion may have a higher deformation rate against external force than at least one of the toothbrush head portion and the toothbrush handle portion.

According to one embodiment, the toothbrush head portion and the toothbrush handle portion may be spaced apart from each other in the longitudinal direction, and at least a portion of the elastic rotation allowing portion may be located between the toothbrush head portion and the toothbrush handle portion. .

According to one embodiment, the toothbrush head portion and the toothbrush handle portion are separate structures, and the toothbrush head portion and the toothbrush handle portion may be coupled to each other by the elastic rotation allowing portion.

According to one embodiment, at least one of the toothbrush head and the toothbrush handle may have a protrusion that protrudes toward the other. The protrusion can reduce the gap between the toothbrush head and the toothbrush handle.

According to another embodiment, the elastic rotation restoration part may be made of at least two protrusions extending from the toothbrush head part or the toothbrush handle part. The protrusion may be linear rod-shaped. According to one example, when tooth brushing force is applied by the user, the twisting energy may be stored in a direction where the linear rods intersect each other.

According to another embodiment, the elastic rotation restoration part may have a plate shape and a thin thickness. According to one example, the restoring rotation force can be generated by the thin thickness of the plate. According to one example, there may be at least one elastic rotation restoration unit. According to one example, the elastic rotation restoration part is provided between one end of the toothbrush head part and one end of the toothbrush handle part, and may be formed integrally with the toothbrush head part and the toothbrush handle part. According to one example, the elastic rotation restoration part may be made of the same material as the toothbrush head part and the toothbrush handle part. At least a portion of the outer peripheral surface of the elastic rotation restoration unit may be covered by another elastic rotation restoration unit that has a higher strain rate against external force than the elastic rotation restoration unit. According to one example, the elastic rotation restoration unit may be formed of four thin plate-shaped wings, and may have a cross-sectional shape of a cross or more. When the plate-shaped thin wing consists of two wings parallel to each other, a connection part connecting the two wings may be provided. One of the wings may be thicker than the other wing to reduce bending in an unintended direction due to the force of brushing. According to one example, at least one hole may be provided in the elastic rotation restoration part. According to one example, when at least one hole is provided in the elastic rotation restoration part, another elastic rotation restoration part made of a material that has a higher strain rate against external force than the elastic rotation restoration part may be filled in the hole. The other elastic rotation restoration unit may be compressed and deformed while the hole of the elastic rotation restoration unit is torsionally deformed when the user brushes the teeth, thereby storing torsional energy.

According to another embodiment, one end of the toothbrush head portion and one end of the toothbrush handle portion may be coupled to each other to enable relative rotation. According to one example, the protrusion protruding from the toothbrush head may be arranged to be rotatable relative to the protrusion protruding from one end of the toothbrush handle. According to one example, a protrusion protruding from the toothbrush head may be arranged to be relatively rotated in a rotation hole provided at one end of the toothbrush handle. According to one example, a protrusion protruding from the toothbrush handle may be arranged to be relatively rotated in a rotation hole provided at one end of the toothbrush head portion. According to one example, the toothbrush head, the toothbrush handle, and the protrusion may be made of the same material. According to one example, the toothbrush head, the toothbrush handle, and the protrusion may be made of different materials. The outer peripheral surface of the protrusion may be at least partially covered with the toothbrush head portion, the toothbrush handle portion, and another elastic rotation restoration portion that has a higher deformation rate against external force than the protrusion portion.

According to another embodiment, the elastic rotation restoration part may have a thin plate shape. The thin plate shape may have a cross-sectional shape such as a single line, a cross, or a snowflake. The elastic rotation restoration part may be provided on at least one of one end of the toothbrush head part and one end of the toothbrush handle part. According to one example, at least one of one end of the toothbrush head part and one end of the tooth hand handle part is provided with a protrusion having an empty space inside, and when the toothbrush head part and the tooth hand handle part are combined, rotation is accommodated by the empty space. Space can be defined. According to one example, the elastic rotation restoration unit within the rotation accommodation space may be torsionally deformed when the torsional energy is stored. According to one example, the toothbrush head, protrusion, toothbrush handle, and elastic rotation restoration part may all be made of the same material. According to one example, one end of the toothbrush head portion and one end of the toothbrush handle portion are coupled to each other, and another elastic rotation restoration portion having a higher deformation rate against external force than the toothbrush head portion, the protrusion, the toothbrush handle portion, and the elastic rotation restoration portion. It can be combined by . According to one example, at least part of the rotation receiving space may be filled by the other elastic rotation restoration unit, or it may still be empty. According to one example, the coupling line between one end of the toothbrush head and one end of the toothbrush handle may be tilted toward the top, horizontal, or toward the bottom as it moves in the radial direction about the longitudinal axis.

According to another embodiment, one end of the toothbrush head portion and one end of the toothbrush handle portion may be coupled to each other to enable relative rotation. According to one example, the extension portion extending from the toothbrush head portion may be arranged to be rotatable relative to the extension portion extending from one end of the toothbrush handle portion. According to one example, an extension portion extending from the toothbrush head portion may be disposed to be capable of relative rotation in a rotation hole provided at one end of the toothbrush handle portion. According to one example, an extension part extending from the toothbrush handle may be arranged to be relatively rotated in a rotation hole provided at one end of the toothbrush head part. According to one example, the toothbrush head, the toothbrush handle, and the protrusion may be made of the same material. According to one example, at least one of one end of the toothbrush head part and one end of the tooth hand handle part is provided with a protrusion having an empty space inside, and when the toothbrush head part and the tooth hand handle part are combined, rotation is accommodated by the empty space. Space can be defined. According to one example, one end of the toothbrush head portion and one end of the toothbrush handle portion are coupled to each other, and another elastic rotation restoration portion having a higher deformation rate against external force than the toothbrush head portion, the protrusion, the toothbrush handle portion, and the elastic rotation restoration portion. It can be combined by . According to one example, at least part of the rotation receiving space may be filled by the other elastic rotation restoration unit, or it may still be empty. According to one example, the coupling line between one end of the toothbrush head and one end of the toothbrush handle may be tilted toward the top, horizontal, or toward the bottom as it moves in the radial direction about the longitudinal axis.

According to an embodiment of the present invention, the toothbrushing guide elastic toothbrush includes a toothbrush head portion provided with toothbrush bristles on one outer peripheral surface in the longitudinal direction; a toothbrush handle portion connected to the longitudinal rear end of the toothbrush head portion and extending in one direction so that the user can hold it with his or her hand; And an elastic rotation restoration part provided between the toothbrush head and the toothbrush handle, allowing rotation of the toothbrush handle and rotation of the toothbrush head based on the rotation of the toothbrush handle, wherein the toothbrush bristles are aligned with the user's position. When force is applied to the toothbrush handle by the user such that the toothbrush handle is rotated in one direction about the longitudinal axis in a state of pressurized contact with the teeth or gums, the elastic rotation restoration unit rotates the toothbrush handle. Allowed, but storing the rotational force generated by the toothbrush handle portion, and in a state in which the rotational force generated by the toothbrush handle portion is stored in the elastic rotation restoration portion, the pressure and adhesion of the toothbrush bristles from the user's teeth or gums is released. In this case, the elastic rotation restoration unit rotates the toothbrush head in the same direction as the toothbrush handle and provides the stored rotational force to the toothbrush head so that the teeth or gums can be brushed by the toothbrush bristles. .

Accordingly, a toothbrushing guide elastic toothbrush that can guide the toothbrush to easily perform a rotational method can be provided.

According to an embodiment of the present invention, even if the user is a young child, the rotation method can be easily performed, and through this, the young child can be guided to maintain his or her teeth in a healthy state.

In addition, according to an embodiment of the present invention, the toothbrush head connected to the longitudinal end of the toothbrush handle is rotated by rotating the toothbrush handle, thereby arousing the interest of young children. Through this, it is possible to reduce a young child's resistance to brushing their teeth.

According to an embodiment of the present invention, an elastic restoration mechanism can be provided with a simple configuration.

1 is an exploded view schematically illustrating an elastic toothbrushing guide toothbrush according to an embodiment of the present invention.
Figure 2 is a combined view showing the combined state of Figure 1.
Figure 3 is a view showing the toothbrushing guide elastic toothbrush according to an embodiment of the present invention as seen from the direction "A" of Figure 2.
4 to 6 are diagrams for explaining the operation of the elastic rotation restoration part of the elastic toothbrushing guide toothbrush according to an embodiment of the present invention.
Figures 7 to 9 are diagrams for explaining the operation of the toothbrushing guide elastic toothbrush according to the toothbrushing position according to an embodiment of the present invention.
Figure 10 is a diagram for explaining a toothbrushing guide elastic toothbrush according to another embodiment of the present invention.
Figure 11 is a diagram for explaining the elastic rotation restoration portion of the toothbrushing guide elastic toothbrush according to another embodiment of the present invention.
Figure 12 is a diagram for explaining a toothbrushing guide elastic toothbrush according to another embodiment of the present invention.
Figure 13 is a diagram for explaining the toothbrush head portion and toothbrush handle portion of an elastic toothbrushing guide toothbrush according to another embodiment of the present invention.
14 to 17 are diagrams for explaining another embodiment of the present invention.
18 to 35 are diagrams for explaining manufacturing methods of embodiments of the present invention.
36 to 61 are diagrams for explaining other embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical idea of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be formed directly on the other element or that a third element may be interposed between them. Additionally, in the drawings, the shape and size are exaggerated for effective explanation of technical content.

Additionally, in various embodiments of the present specification, terms such as first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. Additionally, in this specification, 'and/or' is used to mean including at least one of the components listed before and after.

In the specification, singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, components, or a combination thereof described in the specification, but are not intended to indicate the presence of one or more other features, numbers, steps, or components. It should not be understood as excluding the possibility of the presence or addition of elements or combinations thereof. Additionally, in this specification, “connection” is used to mean both indirectly connecting and directly connecting a plurality of components.

Additionally, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

The toothbrushing guide elastic toothbrush according to the description below may be abbreviated as an elastic toothbrush.

Figure 1 is an exploded view schematically shown to explain a toothbrushing guide elastic toothbrush according to an embodiment of the present invention, Figure 2 is a combined view showing the combined state of Figure 1, and Figure 3 is an embodiment of the present invention. It is a view showing the toothbrushing guide elastic toothbrush according to the "A" direction of Figure 2, and Figures 4 to 6 illustrate the action of the elastic rotation restoration portion of the toothbrushing guide elastic toothbrush according to an embodiment of the present invention. 7 to 9 are drawings for explaining the operation of the toothbrushing guide elastic toothbrush according to an embodiment of the present invention for each toothbrushing position.

As shown in Figures 1 and 2, the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention can guide the toothbrush to easily perform a rotational method.

Here, the rotation method may refer to a method of brushing the teeth by holding the toothbrush so that it faces the gums and turning the wrist, sweeping the upper teeth in a downward direction and the lower teeth in a downward-to-upward direction. In addition, the meaning of guiding can be understood as helping to make difficult toothbrushing movements easier.

That is, the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention can guide toothbrushing when the user brushes from the gums to the teeth while turning the wrist holding the toothbrush.

The toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention can guide the user to easily perform the rotation method even if the user is a young child, and through this, the young child can brush his or her own teeth. You can manage the status.

At this time, most young children find it difficult to brush their teeth. Therefore, the toothbrush itself must be able to attract the interest of young children and make them want to brush their teeth using this toothbrush.

Unlike a conventional fixed stick-shaped toothbrush, the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention moves according to the user's manipulation, for example, like a toy robot, so it can arouse the interest of young children. , Through this, it is possible to alleviate young children’s resistance to brushing their teeth.

Accordingly, young children use the elastic toothbrushing guide toothbrush 100 according to an embodiment of the present invention without resistance, and as the rotational method of brushing is guided by the elastic toothbrushing guide toothbrush 100, the toothbrushing guide elastic toothbrush 100 is guided by the toothbrushing guide elastic toothbrush 100. You can have fun. Accordingly, a young child who brushes his teeth using the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention can have confidence or pride in taking care of his own teeth.

Even in adults, incorrect tooth brushing habits can lead to incomplete brushing results and gum damage, so the development of the right toothbrush is required.

To this end, the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention may be formed to include a toothbrush head part 110, a toothbrush handle part 120, and an elastic rotation restoration part 130.

The toothbrush head portion 110 may form the tip of the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention. The toothbrush head portion 110 serves to support toothbrush bristles (B) provided on one outer peripheral surface in the longitudinal direction.

According to one embodiment of the present invention, the toothbrush head portion 110 rotates relative to the toothbrush handle portion 120 by energy emitted from the elastic rotation restoration portion 130, which is described in more detail below. Let me explain.

According to one embodiment of the present invention, the toothbrush head portion 110 may include a head body 111, a guide bar 112, an insertion end 113, and a first fixed end 114.

The head body 111 forms the exterior of the toothbrush head portion 110. The head body 111 may be provided in the form of a bar extending in one direction. At this time, the head body 111 may have a square or circular cross section.

The head body 111 may provide a space where the toothbrush bristles (B) are provided on one outer peripheral surface in the longitudinal direction. The toothbrush bristles (B) are provided in numbers and arranged in a specific shape, and may be provided on one outer peripheral surface in the longitudinal direction of the head body 111 with their tip facing to the side.

At this time, referring to Figure 3, the top of the toothbrush bristles (B) may be formed of a flat surface and an inclined surface inclined to both sides of the flat surface. When the upper inclined surface of the toothbrush bristles (B) is pressed and adhered to the tooth (T in FIG. 7), the rotation angle of the toothbrush head portion 110 is lower than when the flat surface is pressed and adhered to the tooth (T in FIG. 7). It is further amplified, which will be explained in more detail below. However, it is an example that the top of the toothbrush bristles (B) has a flat surface and inclined surfaces on both sides of the flat surface, and is not limited thereto.

The guide bar 112 may be provided at the rear end of the head body 111. The guide bar 112 may extend rearward from one side of the rear end of the head body 111 in the circumferential direction. The guide bar 112 may support the insertion end 113 provided at its end. The guide bar 112 may guide the insertion end 113 provided at its end to the slit 122 of the toothbrush handle portion 120, which will be described later.

According to one embodiment of the present invention, the guide bar 112 is in close contact with the outer peripheral surface of the toothbrush handle 120 in the longitudinal direction when the toothbrush head 110 and the toothbrush handle 120 are coupled in one direction. It can be.

Meanwhile, according to a modified embodiment, the guide bar 112 is in close contact with the inner peripheral surface of the toothbrush handle 120 in the longitudinal direction when the toothbrush head 110 and the toothbrush handle 120 are coupled in one direction. It can be.

The insertion end 113 may be provided at the longitudinal end of the guide bar 112. The insertion end 113 may protrude from the longitudinal end of the guide bar 112 in a direction perpendicular to the longitudinal direction. For example, when the head body 111 is provided in a cylindrical shape, the insertion end 113 may protrude from the longitudinal end of the guide bar 112 in the radial direction of the head body 111.

According to one embodiment of the present invention, this insertion end 113 is guided by the guide bar 112 when the toothbrush head portion 110 and the toothbrush handle portion 120 are coupled in one direction, and the toothbrush handle portion 113 is guided by the guide bar 112. It may be inserted into the slit 122 provided in the part 120 from the outside to the inside.

According to a modified embodiment, when the head body 111 is provided in a cylindrical shape, the insertion end 113 may protrude outward in the radial direction of the head body 111 from the longitudinal end of the guide bar 112. When the toothbrush head portion 110 and the toothbrush handle portion 120 are coupled in one direction, this insertion end 113 is attached to the inner peripheral surface of the toothbrush handle portion 120 in the longitudinal direction by a guide bar 112. It may be guided and inserted into the slit 122 provided in the toothbrush handle portion 120 from the inside to the outside of the toothbrush handle portion 120.

At this time, the slit 122 is provided in the circumferential direction around one side of the toothbrush handle portion 120, and the insertion end 113 inserted into this slit 122 is located in the longitudinal direction of the slit 122, that is, the toothbrush handle. The portion 120 may be rotated in a circumferential direction. Accordingly, according to an embodiment of the present invention, relative rotation of the toothbrush head portion 110 with respect to the toothbrush handle portion 120 may be possible, and also, the toothbrush handle portion 120 with respect to the toothbrush head portion 110 Relative rotation may be possible.

The first fixed end 114 may be provided at the rear end of the head body 111 in the longitudinal direction. The first fixed end 114 may extend rearward from the longitudinal rear end of the head body 111. This first fixed end 114 is coupled to one side in the circumferential direction of the elastic rotation restoration portion 130 disposed parallel to the circumferential direction of the toothbrush head portion 110 and the toothbrush handle portion 120 to form an elastic rotation restoration portion 130. ) can be fixed.

Meanwhile, although not shown, according to an embodiment of the present invention, a circular trench in which the elastic rotation restoration part 130, which is provided in the form of a circular spring, is seated may be provided inside the longitudinal rear end of the head body 111.

Continuing with reference to FIGS. 1 and 2 , the toothbrush handle portion 120 may form the rear end of the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention. That is, the toothbrush handle portion 120 may be connected to the rear end of the toothbrush head portion 110 in the longitudinal direction. This toothbrush handle portion 120 extends rearward from the longitudinal rear end of the toothbrush head portion 110 so that the user can hold it by hand, and may be connected to the longitudinal rear end of the toothbrush head portion 110. .

According to one embodiment of the present invention, when force is applied by the user to rotate the toothbrush handle portion 120 in one direction (clockwise or counterclockwise) about the longitudinal axis, the elastic rotation restoration portion 130 ), relative rotation with respect to the toothbrush head portion 110 may be permitted.

This toothbrush handle portion 120 may include a handle body 121, a slit 122, and a second fixed end 123.

The handle body 121 forms the exterior of the toothbrush handle portion 120. The handle body 121 may be provided in the form of a bar extending in one direction. At this time, the handle body 121 may have a square or circular cross section, and may have the same shape as the head body 111.

For example, the handle body 121 may be provided with a length that can be sufficiently grasped by an adult user with an average palm size. Accordingly, the handle body 121 may be provided to have a relatively longer length than the head body 111.

Additionally, the slit 122 may be combined with the insertion end 113 provided on the toothbrush head 110. For this purpose, the slit 122 may be provided on one side of the handle body 121 in the longitudinal direction. Specifically, the slit 122 may be provided at a point corresponding to the length of the guide bar 112 provided on the toothbrush head 110 from the tip of the handle body 121. These slits 122 may be provided in the circumferential direction of the handle body 121 at the corresponding points. For example, when the handle body 121 is provided in a cylindrical shape, the slit 122 may be provided in the circumferential direction of the handle body 121 at the corresponding point. At this time, the slit 122 may have a width that allows insertion of the insertion end 113.

According to one embodiment of the present invention, when the toothbrush head portion 110 and the toothbrush handle portion 120 are coupled in one direction, the insertion end 113 guided by the guide bar 112 is inserted into the slit 122. ), the coupling between the toothbrush head portion 110 and the toothbrush handle portion 120 can be completed.

At this time, the slit 122 can enable the insertion end 113 inserted into the slit to rotate in its longitudinal direction, that is, in the circumferential direction of the handle body 121. Accordingly, according to an embodiment of the present invention, relative rotation of the toothbrush head portion 110 with respect to the toothbrush handle portion 120 may be possible, and also, the toothbrush handle portion 120 with respect to the toothbrush head portion 110 Relative rotation may be possible.

Meanwhile, the second fixed end 123 may be provided at the longitudinal end of the handle body 121. The second fixing part 123 may extend forward from the longitudinal end of the handle body 121. This second fixed end 123 is coupled to one side in the circumferential direction to the other side in the circumferential direction of the elastic rotation restoration part 130, which is fixed to the first fixed end 114 of the toothbrush head 110, to elastically restore rotation. Part 130 can be fixed.

At this time, the second fixed end 123 may be provided to face the first fixed end 114 with respect to the origin of the elastic rotation restoration unit 130.

Continuing to refer to FIGS. 1 and 2 , the elastic rotation restoration unit 130 may be provided between the toothbrush head unit 110 and the toothbrush handle unit 120. According to one embodiment of the present invention, the elastic rotation restoration unit 130 may allow the toothbrush handle unit 120 to rotate by force applied from the user's hand.

Additionally, according to one embodiment of the present invention, the elastic rotation restoration unit 130 may allow rotation of the toothbrush head unit 110 based on the rotation of the toothbrush handle unit 120.

That is, according to an embodiment of the present invention, rotation of the toothbrush head 110 and the toothbrush handle 120 can be allowed by the elastic rotation restoration part 130 provided between them.

Accordingly, the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention, when force is applied from the user, causes the first rotation of the toothbrush handle portion 120 according to the rotation of the elastic rotation restoration portion 130. It may include an operation mode and a second rotation operation mode of the toothbrush head unit 110 by rotational energy according to the first rotation operation provided from the elastic rotation restoration unit 130.

According to one embodiment of the present invention, the second rotation operation mode may be started with a time difference from the first rotation operation mode. That is, the second rotation operation mode may be started after the first rotation operation mode is completed.

Here, the first rotation operation mode may be initiated in a state in which the toothbrush bristles (B) are in pressurized contact with the user's teeth (T in FIG. 7 ) or gums. Additionally, the second rotation operation mode may be initiated at the point when the pressure and adhesion of the toothbrush bristles (B) is released from the user's teeth (T in FIG. 7 ) or gums.

In the first rotation operation mode, the toothbrush handle 120 is rotated in one direction about the longitudinal axis by the user while the toothbrush bristles (B) are pressed and in close contact with the user's teeth (T in FIG. 7) or gums. When force is applied to the handle portion 120, the elastic rotation restoration portion 130 may be initiated by allowing the toothbrush handle portion 120 to rotate.

At this time, in the first rotation operation mode, the elastic rotation restoration unit 130 may store the rotational force generated by the toothbrush handle unit 120.

In addition, the second rotation operation mode is a state in which the rotational force generated by the toothbrush handle unit 120 is stored in the elastic rotation restoration unit 130, and the toothbrush bristles (B) are pressed from the user's teeth (T in FIG. 7) or gums. When the adhesion is released, the toothbrush head part 110 rotates in the same direction as the toothbrush handle part 120 and the elastic rotation restoration part (T in FIG. 7) or gums can be brushed by the toothbrush bristles (B). 130 may be initiated by providing the stored rotational force to the toothbrush head portion 110.

Referring to FIG. 4, the elastic rotation restoration unit 130 according to an embodiment of the present invention may be provided as a circular spring. The elastic rotation restoration unit 130 provided as a circular spring may be arranged parallel to the circumferential direction of the toothbrush head unit 110 and the toothbrush handle unit 120.

At this time, according to an embodiment of the present invention, one circumferential side of the elastic rotation restoration unit 130 provided as a circular spring may be coupled to the first fixed end 114 provided on the toothbrush head unit 110. For example, the first fixed end 114 may be coupled to the circular spring at a position B1 in the circumferential direction of the circular spring.

Additionally, the other side of the circular spring in the circumferential direction may be coupled to the second fixed end 123 provided on the toothbrush handle portion 120. For example, the second fixed end 123 may be coupled to the circular spring at a position A1 in the circumferential direction of the circular spring.

Here, the position A1 in the circumferential direction of the circular spring to which the second fixed end 123 is coupled and the position B1 in the circumferential direction of the circular spring to which the first fixed end 123 is coupled are the diameter of the circular spring passing through the origin. It can be defined as both ends of the direction.

According to an embodiment of the present invention, when the force applied to the toothbrush handle portion 120 is transmitted through the second fixed end 123, that is, the user holding the toothbrush handle portion 120 moves the toothbrush head portion. When force is applied to the toothbrush handle portion 120 to rotate (120), when the force applied to the toothbrush handle portion 120 is transmitted through the second fixed end 123, elastic rotation restoration provided by a circular spring The portion 130 may be compressed in the direction of the force applied to the toothbrush handle portion 120. In this way, the elastic rotation restoration unit 130 may enable rotation of the toothbrush handle unit 120 while being compressed in the direction of the force applied to the toothbrush handle unit 120.

As such, in the case of the first rotation operation mode, the toothbrush handle 120 may be rotated and the toothbrush head 110 may be fixed.

Referring to Figure 5, the toothbrush bristles (B) are pressurized and adhered to the user's teeth (T in Figure 7) or gums, and the second fixed end 123 provided on the toothbrush handle portion 120 is aligned in the circumferential direction of the circular spring. For example, the toothbrush handle 120 is held in a state where it is coupled to the A1 position and the first fixed end 114 provided on the toothbrush head 120 is coupled to the B1 position in the circumferential direction of the circular spring. When the user rotates the toothbrush handle 120 to the left (based on the drawing), the second fixed end 123 coupled to the position A1 in the circumferential direction of the circular spring moves to the position A2 in the circumferential direction of the circular spring. do.

At this time, the first fixed end 114 coupled to the position B1 in the circumferential direction of the circular spring presses and adheres the toothbrush bristles B provided on the toothbrush head 110 to the user's teeth (T in FIG. 7) or gums. Therefore, it can be continuously maintained in the position B1 in the circumferential direction of the circular spring. Accordingly, only the second fixed end 123 moves from the A1 position in the circumferential direction of the circular spring to the A2 position, and as a result, the circular spring between the A2 position and the B1 position in the circumferential direction of the circular spring can be compressed. Through this, the toothbrush handle portion 120 can be rotated in the direction desired by the user.

In addition, according to an embodiment of the present invention, the elastic rotation restoration unit 130 is compressed in the direction of the force applied to the toothbrush handle portion 120, for example, a circular shape forming the elastic rotation restoration unit 130. When the fixing force of the toothbrush head 110 is released in a compressed state between the A2 position and the B1 position in the circumferential direction of the spring, that is, the toothbrush head (B) is pressed and pressed against the user's teeth (T in FIG. 7) or gums. ) When the force applied to the circular spring is removed, elastic energy is released in the same direction as the compressed direction and the toothbrush head portion 110 can be rotated in the same direction as the rotation direction of the toothbrush handle portion 120. You can. By rotating the toothbrush head 110, the user's teeth (T in FIG. 7) can be brushed by the bristles B provided on the toothbrush head 110.

Referring to FIG. 6, when the force applied to the toothbrush bristles (B) to press and adhere to the user's teeth (T in FIG. 7) or gums is removed while the circular spring is compressed between positions A2 and B1 in the circumferential direction, The second fixed end 123 moved to the A2 position of the circular spring may be maintained at the A2 position. That is, the toothbrush handle portion 120 can be maintained in a fixed state.

On the other hand, since the toothbrush head portion 110 can freely rotate, the circular spring compressed between the A2 position and B1 can be elastically restored by releasing elastic energy in a clockwise direction. Accordingly, the first fixed end 114 coupled to the position B1 in the circumferential direction of the circular spring moves to the position B2 in the circumferential direction of the circular spring. Here, the position A2 in the circumferential direction of the circular spring and the position B2 in the circumferential direction of the circular spring may be both ends in the longitudinal direction of the diameter passing through the origin of the circular spring.

As such, in the case of the second rotation operation mode, the toothbrush handle 120 is fixed and the toothbrush head 110 can be rotated.

Meanwhile, referring to FIG. 7, when brushing the tooth (T) at position 1 corresponding to the upper teeth using a rotation method, the tooth can be brushed as if sweeping from top to bottom.

When brushing the tooth (T) at position 1 using a rotational method using the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention, the user first uses the toothbrush head provided on one side of the toothbrush head 110. The top of the toothbrush bristles (B) can be pressed and brought into close contact with the surface of the tooth (T) at position 1.

Next, the user can rotate the toothbrush handle portion 120 that is being held so that the tooth (T) at position 1 is cleaned by the toothbrush bristles (B) that move as if sweeping the tooth from top to bottom. At this time, the rotational force generated by the toothbrush handle unit 120 may be stored in the elastic rotation restoration unit 130.

Then, when the user removes the force applied to the toothbrush bristles (B) toward the teeth (T), the rotational force generated by the toothbrush handle portion (120) stored in the elastic rotation restoration portion (130), for example , As elastic energy is released, the toothbrush head portion 110 and the toothbrush bristles (B) provided on one side thereof may be rotated in the same direction as the rotation direction of the toothbrush handle portion 120. Accordingly, the tooth (T) at position 1, which corresponds to the upper tooth, can be brushed by the toothbrush bristles (B) as if sweeping from top to bottom.

At this time, referring to FIG. 8, the user can first press and adhere the inclined surface of the upper end of the toothbrush bristles (B) provided on one side of the toothbrush head unit 110 to the surface of the tooth (T) at the first position.

In this case, in the form shown in Figure 7, a greater rotational force can be stored in the elastic rotation restoration unit 130 than when the top of the toothbrush bristles (B) is pressed and adhered to the surface of the tooth (T), and accordingly, Figure 7 The rotation angle of the toothbrush head 110 can be further amplified than in the case of .

Meanwhile, referring to FIG. 8, when brushing the tooth (T) at the second position corresponding to the lower tooth using a rotation method, the tooth can be brushed as if sweeping from bottom to top.

When brushing the tooth (T) at position 2 using a rotational method using the toothbrushing guide elastic toothbrush 100 according to an embodiment of the present invention, the user first uses the toothbrush head provided on one side of the toothbrush head 110. The top of the toothbrush bristles (B) can be pressed and brought into close contact with the surface of the tooth (T) at position 2.

At this time, as described above, when the inclined surface on one side of the top of the toothbrush bristles (B) is pressed and brought into close contact with the surface of the tooth (T) at the second position, the upper center part of the toothbrush bristles (B) is pressed against the surface of the tooth (T) at the second position. The rotation angle of the toothbrush head 110 can be further amplified compared to the case of pressurized contact.

Next, the user can rotate the toothbrush handle 120 being held so that the tooth (T) at position 2 is cleaned by the toothbrush bristles (B) that move the teeth as if sweeping them from bottom to top. At this time, the rotational force generated by the toothbrush handle unit 120 may be stored in the elastic rotation restoration unit 130.

Then, when the user removes the force applied to the toothbrush bristles (B) toward the teeth (T), the rotational force generated by the toothbrush handle portion (120) stored in the elastic rotation restoration portion (130), for example , As elastic energy is released, the toothbrush head portion 110 and the toothbrush bristles (B) provided on one side thereof may be rotated in the same direction as the rotation direction of the toothbrush handle portion 120. Accordingly, the tooth (T) at the second position, corresponding to the lower tooth, can be brushed by the toothbrush bristles (B) as if sweeping from bottom to top.

From another perspective, according to an embodiment of the present invention, the elastic rotation restoration unit 130 is capable of providing twisting and restoring force in a clockwise direction about the longitudinal direction of the toothbrush handle unit 120, and in a counterclockwise direction. It may also be possible to provide torsion and resilience. Accordingly, it may be possible to utilize the rotation and restoring force in both directions required when brushing teeth using the rotation method.

Furthermore, according to one example, the restoring force after twisting clockwise about the longitudinal direction of the toothbrush handle portion 120 and the restoring force after twisting counterclockwise about the longitudinal direction of the toothbrush handle portion 120 correspond to each other. You can. More specifically, the restoring force can be the same regardless of direction.

Hereinafter, an elastic toothbrushing guide toothbrush according to another embodiment of the present invention will be described with reference to FIGS. 10 and 11.

Figure 10 is a diagram for explaining an elastic toothbrush guide for toothbrushing according to another embodiment of the present invention, and Figure 11 is a diagram for explaining an elastic rotation restoration part of an elastic toothbrush for brushing guide according to another embodiment of the present invention.

Referring to Figure 10, the toothbrushing guide elastic toothbrush 200 according to another embodiment of the present invention may be formed including a toothbrush head portion 210, a toothbrush handle portion 220, and an elastic rotation restoration portion 230. .

The toothbrush head portion 210 may form the tip of the toothbrushing guide elastic toothbrush 200 according to another embodiment of the present invention. Toothbrush bristles (B) may be provided on one outer peripheral surface of the toothbrush head portion 210 in the longitudinal direction. The toothbrush head portion 210 may be provided in a bar shape extending in one direction. At this time, the toothbrush head portion 210 may have a square or circular cross section.

The toothbrush head unit 210 may rotate relative to the toothbrush handle unit 220 by the energy emitted from the elastic rotation restoration unit 230.

The toothbrush handle portion 220 may form the rear end of the toothbrushing guide elastic toothbrush 200 according to another embodiment of the present invention. That is, the toothbrush handle portion 220 may be connected to the rear end of the toothbrush head portion 210 in the longitudinal direction. This toothbrush handle portion 220 extends rearward from the longitudinal rear end of the toothbrush head portion 210 so that the user can hold it by hand, and may be connected to the longitudinal rear end of the toothbrush head portion 210. .

The toothbrush handle portion 220 may be provided in the form of a bar extending in one direction. At this time, the toothbrush handle portion 220 may have a square or circular cross section, and may have the same shape as the toothbrush head portion 210.

According to another embodiment of the present invention, when force is applied by the user to rotate the toothbrush handle portion 220 in one direction about the longitudinal axis, the toothbrush head portion 210 is rotated by the elastic rotation restoration portion 230. ) relative rotation may be permitted.

According to another embodiment of the present invention, the elastic rotation restoration unit 230 may be provided as an elastic polymer band. At this time, the elastic rotation restoration unit 230 provided as an elastic polymer band may have a mesh structure to store and release elastic energy in clockwise and counterclockwise directions.

Referring to FIG. 11, the elastic polymer band forming the elastic rotation restoration part 230 may be provided in a form that surrounds the contact portion of the toothbrush head part 210 and the toothbrush handle part 220 that are connected in one direction.

At this time, the elastic polymer band may be divided into a bonded area 231 and a non-bonded area 232 depending on whether or not it is bonded to the toothbrushing guide elastic toothbrush 200.

That is, according to another embodiment of the present invention, both ends of the elastic polymer band in the longitudinal direction may be a bonding area 231 that is bonded to the outer peripheral surfaces of the toothbrush head portion 210 and the toothbrush handle portion 220.

Additionally, in the elastic polymer band, the portion excluding both ends in the longitudinal direction may be a non-bonded area 232 that is not bonded to the outer peripheral surfaces of the toothbrush head portion 210 and the toothbrush handle portion 220.

According to another embodiment of the present invention, the non-bonded area 232 may include a portion where the longitudinal rear end of the toothbrush head 210 and the longitudinal front end of the toothbrush handle 220 contact.

Accordingly, relative rotation of the toothbrush handle 220 with respect to the toothbrush head 210 in a fixed state may be possible, and the relative rotation of the toothbrush head 210 with respect to the toothbrush handle 220 in a fixed state This may be possible.

Accordingly, the toothbrushing guide elastic toothbrush 200 according to another embodiment of the present invention operates in the same manner as the toothbrushing guide elastic toothbrush (100 in FIG. 1) according to an embodiment of the present invention, and is used for the user's toothbrushing using the rotation method. can guide you.

That is, the toothbrushing guide elastic toothbrush 200 according to another embodiment of the present invention performs a first rotational motion of the toothbrush handle portion 220 according to rotation of the elastic rotation restoration portion 230 when force is applied from the user. It may include a second rotational operation mode of the toothbrush head unit 210 by rotational energy according to the first rotational operation provided from the elastic rotation restoration unit 230.

According to another embodiment of the present invention, the second rotation operation mode may be started with a time difference from the first rotation operation mode. That is, the second rotation operation mode may be started after the first rotation operation mode is completed.

Here, the first rotation operation mode may be initiated in a state in which the toothbrush bristles (B) are in pressurized contact with the user's teeth (T in FIG. 7 ) or gums. Additionally, the second rotation operation mode may be initiated at the point when the pressure and adhesion of the toothbrush bristles (B) is released from the user's teeth (T in FIG. 7 ) or gums.

Hereinafter, an elastic toothbrushing guide toothbrush according to another embodiment of the present invention will be described with reference to FIGS. 12 and 13.

Figure 12 is a diagram for explaining an elastic toothbrush guide according to another embodiment of the present invention, and Figure 13 is a diagram for explaining the toothbrush head portion and the toothbrush handle portion of the elastic toothbrush brushing guide according to another embodiment of the present invention. It is a drawing.

Referring to Figure 12, the toothbrush guide elastic toothbrush 300 according to another embodiment of the present invention may be formed including a toothbrush head portion 110, a toothbrush handle portion 120, and an elastic rotation restoration portion 230. there is.

Since another embodiment of the present invention is a combination of one embodiment of the present invention and another embodiment of the present invention, the same reference numerals are assigned to the same components and detailed description thereof will be omitted.

The toothbrush head unit 110 according to another embodiment of the present invention may be the same as the toothbrush head unit (110 in FIG. 1) according to an embodiment of the present invention.

Referring to Figure 13, that is, the toothbrush head part 110 according to another embodiment of the present invention, like the toothbrush head part (110 in Figure 1) according to an embodiment of the present invention, includes a head body 111, It may include a guide bar 112, an insertion end 113, and a first fixed end 114.

Additionally, the toothbrush handle portion 120 according to another embodiment of the present invention may be the same as the toothbrush handle portion (120 in FIG. 1) according to an embodiment of the present invention. That is, the toothbrush handle portion 120 according to another embodiment of the present invention has a handle body 121, a slit 122, and a second toothbrush handle portion (120 in FIG. 1) according to an embodiment of the present invention. It may include 2 fixed ends (123).

As described above, according to another embodiment of the present invention, the toothbrush head portion 110 is provided with a first fixed end 114, and the toothbrush handle portion 120 is provided with a second fixed end 123. Accordingly, a circular spring whose one side and the other side in the circumferential direction are fixed by the first fixed end 114 and the second fixed end 123 may be provided between the toothbrush head part 110 and the toothbrush handle part 120. .

The circular spring, together with the elastic polymer band described later, can store the force applied from the toothbrush handle portion 120 and release the stored force to rotate the toothbrush head portion 110.

However, according to another embodiment of the present invention, since the elastic rotation restoration part 230 made of an elastic polymer band is provided, the circular spring may be omitted.

Meanwhile, the elastic rotation restoration unit 230 according to another embodiment of the present invention may be the same as the elastic rotation restoration unit (230 in FIG. 10) according to another embodiment of the present invention.

That is, the elastic rotation restoration unit 230 according to another embodiment of the present invention is provided with an elastic polymer band having a mesh structure, and is provided in contact with the toothbrush head unit 110 and the toothbrush handle unit 120 connected in one direction. It may be provided in a form that surrounds the area.

That is, as in other embodiments, both longitudinal ends of the elastic rotation restoration part 230 made of an elastic polymer band may be joined to the outer peripheral surface of the toothbrush head 110 and the toothbrush handle 120, and the longitudinal direction Parts excluding both ends may be non-bonded to the outer peripheral surfaces of the toothbrush head portion 110 and the toothbrush handle portion 120.

At this time, the longitudinal rear end of the toothbrush head 110 and the longitudinal front end of the toothbrush handle 120 are located below the elastic polymer band area that is not bonded to the outer peripheral surface of the toothbrush head 110 and the toothbrush handle 120. The contact area may be located.

Here, the elastic polymer band may be provided to cover the slit 122 formed in the toothbrush handle portion 120.

In general, toothbrushes can be mainly used in environments with high humidity, such as bathrooms. Accordingly, according to another embodiment of the present invention, an elastic polymer band provided in a form that surrounds the contact area between the toothbrush head portion 110 and the toothbrush handle portion 120 is formed on one side of the toothbrush handle portion 120 in the longitudinal direction. By covering the slit 112, it is possible to block moisture from penetrating into the slit 112, thereby preventing mold from forming inside the toothbrush handle 120.

That is, according to another embodiment of the present invention, by covering the slit 112 with an elastic polymer band, the toothbrushing guide elastic toothbrush 300 can be managed more hygienically.

The toothbrushing guide elastic toothbrush 300 according to another embodiment of the present invention, which is a combination of one embodiment of the present invention and another embodiment of the present invention, operates in the same manner as one embodiment and other embodiments and uses a rotation method. It can guide the user's toothbrushing.

That is, the toothbrushing guide elastic toothbrush 300 according to another embodiment of the present invention causes the first rotation of the toothbrush handle 120 according to the rotation of the elastic rotation restoration part 230 when force is applied from the user. It may include an operation mode and a second rotation operation mode of the toothbrush head unit 110 by rotational energy according to the first rotation operation provided from the elastic rotation restoration unit 230.

According to another embodiment of the present invention, the second rotation operation mode may be started with a time difference from the first rotation operation mode. That is, the second rotation operation mode may be started after the first rotation operation mode is completed.

Here, the first rotation operation mode may be initiated in a state in which the toothbrush bristles (B) are in pressurized contact with the user's teeth (T in FIG. 7 ) or gums. Additionally, the second rotation operation mode may be initiated at the point when the pressure and adhesion of the toothbrush bristles (B) is released from the user's teeth (T in FIG. 7 ) or gums.

Modified examples of the present invention are described below. We will omit the explanation of overlapping parts and describe the differentiated configuration in detail.

14 to 17 are diagrams for explaining another embodiment of the present invention.

Referring to FIG. 14, the toothbrushing guide elastic toothbrush 400 according to another embodiment of the present invention may include at least one of a toothbrush head portion 410 and a toothbrush handle portion 420. At this time, as described above, toothbrush bristles (B) may be provided on one side of the toothbrush head portion 410, and the shape and function of the toothbrush bristles (B) correspond to those described with reference to FIGS. 3 and 8, so a detailed description is provided. Decided to omit it.

A separation space (S) may be provided along the longitudinal direction of the toothbrush head portion 410 and the toothbrush handle portion 420 according to another embodiment of the present invention. That is, at least a portion of the toothbrush head portion 410 in the longitudinal direction and at least a portion of the toothbrush handle portion 420 in the longitudinal direction may be spaced apart from each other.

An elastic rotation restoration unit 450 may be provided in the separation space (S). The function of the elastic rotation restoration unit 450 corresponds to the elastic rotation restoration units 130 and 230 described above, and more specifically, as described with reference to FIGS. 7, 8, and 9, elastic energy is used to guide toothbrushing. It can perform storage and release functions.

The elastic rotation restoration unit 450 may be made of a material that is soft and has good elasticity. For example, the elastic rotation restoration part 450 may be made of a material that is softer and has better elasticity than at least one of the toothbrush head part 410 and the toothbrush handle part 420. Through this, when a torsional torque occurs due to brushing between the toothbrush head portion 410 and the toothbrush handle portion 420, the elastic rotation restoration portion 450 can store elastic energy, and the stored elastic energy under predetermined conditions. can emit. For example, the elastic modulus of the elastic rotation restoration part 450 may be smaller than that of at least one of the toothbrush head part 410 and the toothbrush handle part 420.

The manufacturing method will be described below with reference to FIGS. 15 to 17. The description of the manufacturing of the toothbrush bristles (B) will be omitted. Hereinafter, some drawings will show the inside of the elastic rotation restoration unit 450 so that it can be seen.

Referring to Figure 15(a), first, the toothbrush head portion 410 and the toothbrush handle portion 420 may be provided with a space between them, and referring to Figure 15(b), the toothbrush head portion 410 and the toothbrush handle portion 420 may elastically rotate in the space. The restoration portion 450 may be filled. The elastic rotation restoration part 450 may further cover one side of the toothbrush head part 410 and the toothbrush handle part 420. Accordingly, mechanical durability can be improved, and slipping of the finger grip point can also be prevented.

At this time, storage and release of torsional elastic energy between the toothbrush head 410 and the toothbrush handle 420 are possible, but relative movement in the space between the toothbrush head 410 and the toothbrush handle 420 is limited. Possible designs may be further considered.

Referring to Figure 16(a) in more detail, the toothbrush head portion 410 and the toothbrush handle portion 420 are provided with a space between them, and a protrusion is provided so that the space is narrowed in the longitudinal direction (L). It can be. The spacing space in the longitudinal direction (L) is narrowed by the protrusion, and the elastic rotation restoration part 450 can be filled therein. In this case, since the separation space (S) is narrowed, the relative movement between the toothbrush head portion 410 and the toothbrush handle portion 420 is limited, while the torsional elasticity between the toothbrush head portion 410 and the toothbrush handle portion 420 Energy storage and release may still be possible.

Furthermore, a manufacturing method such as that shown in Figure 17 may also be possible. Referring to FIG. 17(a), first, in the injection process, the toothbrush head portion 410 and the toothbrush handle portion 420 may be connected to the thin connecting portion 452.

Afterwards, as shown in FIG. 17(b), the space S between the toothbrush head portion 410 and the toothbrush handle portion 420 may be filled with an elastic rotation restoration portion 450.

Subsequently, as shown in FIG. 17(c), the thin connecting portion 452 between the toothbrush head portion 410 and the toothbrush handle portion 420 may be cut. To this end, an external force may be applied between the toothbrush head portion 410 and the toothbrush handle portion 420 to cause relative deformation. As the thin connecting portion 452 is cut off, relative movement may be possible between the toothbrush head portion 410 and the toothbrush handle portion 420. However, in the case where the connecting portion 452 is broken, the longitudinal spacing between the toothbrush head 410 and the toothbrush handle 420 is very small, so the toothbrush head 410 and the toothbrush handle 420 during toothbrushing. Relative movement of the liver may rarely occur or, if it does occur, may not cause toothbrushing discomfort.

The manufacturing method described above with reference to FIGS. 15 to 17 may be performed through a predetermined double injection process or an insert process.

The manufacturing method will be described below, and the description of the manufacturing method can be applied to the toothbrush described with reference to FIGS. 14 to 17.

18 to 35 are diagrams for explaining manufacturing methods of embodiments of the present invention.

Referring to FIG. 18, a first mold 1000 and a second mold 1100 may be prepared. It is assumed that the first mold 1000 is a basic mold and the second mold 1100 is a moving mold. The basic mold and the moving mold can be reversed. That is, the first mold 1000 may be a movable mold.

As shown in FIG. 19, the second mold 1100 may move to the first mold 1000 to form a cavity. That is, a first cavity (for 410) for injection of the toothbrush head portion and a second cavity (for 420) for injection of the toothbrush handle portion (450) may be formed.

As shown in FIG. 20, the toothbrush head portion 410 and the toothbrush handle portion 450 may be injected by injecting a plastic source from the first and second cavities.

As shown in FIG. 21, the second mold 1100 can be removed.

As shown in FIG. 22, the 2-A mold 1110 can then be prepared.

The 2-A mold 1110 may form a third cavity (for 450) for injection of the elastic rotation restoration part together with the first mold 1000 (see FIG. 23).

As shown in FIG. 24, an elastic rotation restoration part 450 made of an elastic material may be formed through the third cavity (for 450). This series of processes can also be called double injection.

As shown in FIG. 25, the injection molded product may be separated and the brush B may be planted on the toothbrush head portion 410. As a result, the toothbrushing guide elastic toothbrush according to the embodiment can be manufactured.

Meanwhile, by modifying the shapes of the first and second cavities, the protrusions described with reference to FIG. 16 can be provided. Subsequently, as shown in FIG. 26, an elastic rotation restoration part may be formed through the third cavity. As shown in Figure 27, the injection product can then be separated from the mold and the brush (B) can be planted. In FIG. 27, the elastic rotation restoration part 450 is shown as translucent to illustrate the internal protrusion. The elastic rotation restoration unit 450 according to an embodiment may be opaque, translucent, or transparent.

In this way, the elastic rotation restoration part 450 can be formed even if the toothbrush head part 410 and the toothbrush handle part 450 are separated by the space S, and in this way, as shown in FIGS. 14 to 14 The embodiments described with reference to 17 can be manufactured.

Furthermore, a mesh structure may be formed on the surface of the elastic rotation restoration unit 450 in a diagonal direction (refer to the diagonal mesh direction of reference numeral 230 in FIG. 10 ) to facilitate storage and release of elastic energy.

Hereinafter, a modified example of the manufacturing method according to an embodiment of the present invention will be described.

Referring to FIG. 28, a first mold 1000 and a second mold 1130 may be prepared. As the second mold 1130 moves to the first mold 1000, as shown in FIG. 29, the first cavity (for 410) for the toothbrush head injection 410 and the toothbrush handle 450 are injected. A second cavity (for 450) may be formed.

Referring to FIG. 30, the first mold 1130 may be separated.

Referring to FIG. 31, the 1-A mold (1010, see red line) may be rearranged in the direction of the arrow to form the third cavity. Accordingly, as shown in FIG. 32, one end of the toothbrush head 410, the space S, and one end of the toothbrush handle 450 may be provided as a cavity. Additionally, a corresponding second mold 1140 may be prepared.

As shown in FIG. 33, the first mold and the second mold 1000 and 1140 are aligned, thereby forming a third cavity 450 for forming the elastic rotation restoration part 450.

As shown in FIG. 34, the elastic rotation restoration portion 450 is formed to surround one end of the toothbrush head portion 410, fill the space S, and surround one end of the toothbrush handle portion 450. You can. It is different from the embodiment described with reference to FIGS. 18 to 27 in that the elastic rotation restoration portion 450 surrounds one end of the toothbrush head portion 410 and one end of the toothbrush handle portion 450.

As a result, an elastic toothbrushing guide toothbrush according to an embodiment can be manufactured, as shown in FIG. 35. The manufacturing method described with reference to FIGS. 28 to 35 may be applied to the embodiments described with reference to FIGS. 14 to 17 .

In Figure 35, the elastic rotation restoration part 450 is shown as translucent to illustrate the internal protrusion. The elastic rotation restoration unit 450 according to an embodiment may be opaque, translucent, or transparent.

Furthermore, a mesh structure may be formed on the surface of the elastic rotation restoration unit 450 in a diagonal direction (refer to the diagonal mesh direction of reference numeral 230 in FIG. 10 ) to facilitate storage and release of elastic energy.

In Figure 35, the elastic rotation restoration part 450 is shown as translucent to illustrate the internal protrusion. The elastic rotation restoration unit 450 according to an embodiment may be opaque, translucent, or transparent.

Various examples will be described below with reference to FIG. 36 and below.

Referring to Figure 36(a), a first protrusion 412 is provided at one end of the toothbrush head portion 410 of the elastic toothbrush according to an embodiment of the present invention, and a first protrusion 412 is provided at one end of the toothbrush handle portion 420. A second protrusion 422 may be provided.

According to one example, the second protrusion 422 may extend from the toothbrush handle 420 in the Z-axis direction toward the toothbrush head 410. The first protrusion 412 may be spaced apart from the second protrusion 422 in the X-axis and/or Y-axis direction and may protrude in the direction of the toothbrush handle portion 420.

According to one example, referring to the cross-sectional shape (i.e., XY plane shape) at position V in FIG. 36(a), as shown in V', the first protrusion 412 has a circular cylindrical shape. The second protrusion 422 may have a stick shape. At this time, the first protrusion 412 may have the shape of an arc rather than a circle.

According to one example, when viewed in direction A of FIG. 36(a), the first and second protrusions 412 and 422 may overlap each other. Furthermore, in addition to the second protrusion 422, an auxiliary protrusion may be provided at one end of the toothbrush handle 420, which faces the first protrusion 412 and is non-overlapping in the A direction.

Depending on the manufacturing method, the elastic rotation restoration unit 450 may have the shape of Figure 36(b) or Figure 36(c), as described above.

Accordingly, the longitudinal movement of the Z-axis between the toothbrush head 410 and the toothbrush handle 420 can be minimized, and only the rotational freedom centered on the Z-axis can be selectively implemented.

At this time, in this embodiment, at least one of the first protrusion 412 and the second protrusion 422 may be omitted. Furthermore, the positions of the first protrusion 412 and the second protrusion 422 may be opposite. That is, the shape of the first protrusion 412 may be provided on the toothbrush handle portion 420, and the shape of the second protrusion 422 may be provided on the toothbrush head portion 410.

The elastic rotation restoration part 450 may have a groove into which the first protrusion 412 is inserted. For another example, the first protrusion 412 may be provided on the radial outer peripheral surface of the elastic rotation restoration part 450. At this time, depending on the shape of the first protrusion 412, at least a portion of the elastic rotation restoration part 450 may be surrounded by the first protrusion 412. Of course, the first protrusion 412 may entirely surround the outer peripheral surface of the elastic rotation restoration part 450.

Additionally, the elastic rotation restoration part 450 may have a groove into which the second protrusion 422 is inserted.

Hereinafter, another embodiment will be described with reference to FIG. 37. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 37, a first protrusion 412 is provided at one end of the toothbrush head portion 410 of the elastic toothbrush according to an embodiment of the present invention, and a second protrusion is provided at one end of the toothbrush handle portion 420. (422) can be provided.

According to one example, the second protrusion 422 may extend from the toothbrush handle 420 in the Z-axis direction toward the toothbrush head 410. The first protrusion 412 may be spaced apart from the second protrusion 422 in the X-axis and/or Y-axis direction and may protrude in the direction of the toothbrush handle portion 420.

According to one example, when viewed in direction A of FIG. 37, the first and second protrusions 412 and 422 may overlap each other. Furthermore, in addition to the second protrusion 422, an auxiliary protrusion may be provided at one end of the toothbrush handle 420, which faces the first protrusion 412 and is non-overlapping in the A direction.

At this time, an auxiliary protrusion 424 may be provided on one side of the second protrusion 422. The auxiliary protrusion 424 may serve to narrow the distance in the X and Y axes with the first protrusion 412 when viewed from the cross section at the V position. This is to limit degrees of freedom other than Z-axis rotation.

The auxiliary protrusion 424 is shown to be in the shape of a disk, but alternatively, it may be in the shape of a circular band with an empty interior, or may have several radial outward parts from the center of the Z axis, such as a cart wheel shape (see blue box 424a). Branches may also be connected in a circular band direction. This is to increase the contact area with the polymer material that makes up the elastic rotation part.

Additionally, teeth may be provided on the first and second protrusions 412 and 422 and the auxiliary protrusion 424 to provide a predetermined roughness. This is also to expand the contact area with the elastic rotation restoration part.

Additionally, at least one of the first and second protrusions 412 and 422 and the auxiliary protrusion 424 may be omitted. Furthermore, the locations may be reversed. That is, the shape of the first protrusion 412 may be provided on the toothbrush handle portion 420, and the shapes of the second protrusion 422 and the auxiliary protrusion 424 may be provided on the toothbrush head portion 410.

Meanwhile, FIG. 37 shows that the first protrusion 412 is formed on the outer line of the toothbrush head 410, but of course, it can be located at a predetermined inward location as shown in FIG. 36.

In addition, the elastic rotation restoration unit 450 may have a shape corresponding to the shape of FIG. 36(b) or the shape of FIG. 36(c), as described above, depending on the manufacturing method. .

The elastic rotation restoration part 450 may have a groove into which the first protrusion 412 is inserted. For another example, the first protrusion 412 may be provided on the radial outer peripheral surface of the elastic rotation restoration part 450. At this time, depending on the shape of the first protrusion 412, at least a portion of the elastic rotation restoration part 450 may be surrounded by the first protrusion 412. Of course, the first protrusion 412 may entirely surround the outer peripheral surface of the elastic rotation restoration part 450.

Additionally, the elastic rotation restoration part 450 may have a groove into which the second protrusion 422 is inserted.

Hereinafter, another modified example will be described with reference to FIG. 38. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 38, a first protrusion 412 is provided at one end of the toothbrush head portion 410 of the elastic toothbrush according to an embodiment of the present invention, and a second protrusion is provided at one end of the toothbrush handle portion 420. (422) can be provided.

According to one example, the second protrusion 422 may extend from the toothbrush handle 420 in the Z-axis direction toward the toothbrush head 410. The first protrusion 412 may be spaced apart from the second protrusion 422 in the X-axis and/or Y-axis direction and may protrude in the direction of the toothbrush handle portion 420.

According to one example, when viewed in direction A of FIG. 38, the first and second protrusions 412 and 422 may overlap each other. Furthermore, in addition to the second protrusion 422, an auxiliary protrusion may be provided at one end of the toothbrush handle 420, which faces the first protrusion 412 and is non-overlapping in the A direction.

According to one example, referring to the cross-sectional shape (i.e., XY plane shape) at position V in FIG. 38, the first protrusion 412 may have a circular cylindrical shape. The first protrusion 412 may have the shape of an arc rather than a circle.

At this time, an auxiliary protrusion 424 may be provided on one side of the second protrusion 422. The auxiliary protrusion 424 has a wagon wheel shape (not shown) as shown when viewed from the It can have any surface shape (also possible). As a result, the elastic rotational force in the Z-axis direction can be more easily transmitted to the toothbrush head portion 410.

As described above, teeth may be provided on the first and second protrusions 412 and 422 and the auxiliary protrusion 424 to provide a predetermined roughness. This is also to expand the contact area with the elastic rotation restoration part.

Additionally, at least one of the first and second protrusions 412 and 422 and the auxiliary protrusion 424 may be omitted. Furthermore, the locations may be reversed. That is, the shape of the first protrusion 412 may be provided on the toothbrush handle portion 420, and the shapes of the second protrusion 422 and the auxiliary protrusion 424 may be provided on the toothbrush head portion 410.

Meanwhile, FIG. 38 shows that the first protrusion 412 is formed on the outer line of the toothbrush head portion 410, but of course, it can be located at a predetermined inward location as shown in FIG. 36.

In addition, the elastic rotation restoration unit 450 may have a shape corresponding to the shape of FIG. 36(b) or the shape of FIG. 36(c), as described above, depending on the manufacturing method. .

Additionally, the shape of the auxiliary protrusion shown in FIG. 38 may be combined with the shape of the auxiliary protrusion described with reference to FIG. 37 to have a three-dimensional spherical shape. In contrast, of course, it can have a three-dimensional shape such as a tetrahedron or hexahedron.

The elastic rotation restoration part 450 may have a groove into which the first protrusion 412 is inserted. For another example, the first protrusion 412 may be provided on the radial outer peripheral surface of the elastic rotation restoration part 450. At this time, depending on the shape of the first protrusion 412, at least a portion of the elastic rotation restoration part 450 may be surrounded by the first protrusion 412. Of course, the first protrusion 412 may entirely surround the outer peripheral surface of the elastic rotation restoration part 450.

Additionally, the elastic rotation restoration part 450 may have a groove into which the second protrusion 422 is inserted.

Hereinafter, another modified example will be described with reference to FIG. 39. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 39, a first protrusion 412 is provided at one end of the toothbrush head portion 410 of the elastic toothbrush according to an embodiment of the present invention, and a second protrusion is provided at one end of the toothbrush handle portion 420. (422) can be provided.

According to one example, the second protrusion 422 may extend from the toothbrush handle 420 in the Z-axis direction toward the toothbrush head 410. The first protrusion 412 may be spaced apart from the second protrusion 422 in the X-axis and/or Y-axis direction and may protrude in the direction of the toothbrush handle portion 420.

According to one example, when viewed in direction A of FIG. 39, the first and second protrusions 412 and 422 may overlap each other. Additionally, when viewed along the Z axis, the first and second protrusions 412 and 422 may not overlap each other. The first and second protrusions 412 and 422 may have a plate shape or an arc shape when viewed from the Z axis. At this time, it is assumed that the direction in which the toothbrush bristles are planted is the X-axis direction. However, the technical idea of this embodiment can be applied even when the direction in which the toothbrush bristles are planted is in the Y-axis direction.

Furthermore, a first auxiliary protrusion 414 may be provided on one side of the first and second protrusions 412 and 422, and a second auxiliary protrusion 424 may be provided. The first auxiliary protrusion 414 and the second auxiliary protrusion 424 may perform a function of limiting other degrees of freedom in addition to the rotational freedom around the Z axis. The first auxiliary protrusion 414 and the second auxiliary protrusion 424 may or may not overlap each other in the A direction. A hole may be provided inside at least one of the first auxiliary protrusion 414 and the second auxiliary protrusion 424. The hole can expand the contact area between the auxiliary protrusion and the elastic rotation restoration part. Additionally, as described above, a serrated surface may be provided to expand the contact area.

In addition, the elastic rotation restoration unit 450 may have a shape corresponding to the shape of FIG. 36(b) or the shape of FIG. 36(c), as described above, depending on the manufacturing method. .

Additionally, the elastic rotation restoration part 450 may have a groove into which the first protrusion 412 is inserted. For another example, the first protrusion 412 may be provided on the radial outer peripheral surface of the elastic rotation restoration part 450. At this time, depending on the shape of the first protrusion 412, at least a portion of the elastic rotation restoration part 450 may be surrounded by the first protrusion 412.

Additionally, the elastic rotation restoration part 450 may have a groove into which the second protrusion 422 is inserted.

At this time, a first groove into which the first and second protrusions 412 and 422 can be inserted may be provided on the outer peripheral surface (that is, the radial outer surface) of the elastic rotation restoration part 450. Furthermore, a second groove into which the first auxiliary protrusion 414 and the second auxiliary protrusion 424 can be inserted may be provided on the outer peripheral surface of the elastic rotation restoration part 450.

Hereinafter, another modified example will be described with reference to FIG. 40. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 40, a first protrusion 412 is provided at one end of the toothbrush head portion 410 (brush bristles not shown) of an elastic toothbrush according to an embodiment of the present invention, and one end of the toothbrush handle portion 420 A second protrusion 422 may be provided.

According to one example, the second protrusion 422 may extend from the toothbrush handle 420 in the Z-axis direction toward the toothbrush head 410. The first protrusion 412 may be spaced apart from the second protrusion 422 in the X-axis and/or Y-axis direction and may protrude in the direction of the toothbrush handle portion 420.

According to one example, when viewed in direction A of FIG. 40 during assembly, the first and second protrusions 412 and 422 may overlap each other. Additionally, when viewed along the Z axis, the first and second protrusions 412 and 422 may not overlap each other. The first and second protrusions 412 and 422 may have a plate shape or an arc shape when viewed from the Z axis. At this time, it is assumed that the direction in which the toothbrush bristles are planted is in the radial direction.

Furthermore, a first auxiliary protrusion 414 may be provided on one side of the first and second protrusions 412 and 422, and a second auxiliary protrusion 424 may be provided. The first auxiliary protrusion 414 and the second auxiliary protrusion 424 may perform a function of limiting other degrees of freedom in addition to the rotational freedom around the Z axis. The first auxiliary protrusion 414 and the second auxiliary protrusion 424 may or may not overlap each other in the A direction. A hole may be provided inside at least one of the first auxiliary protrusion 414 and the second auxiliary protrusion 424. The hole can expand the contact area between the auxiliary protrusion and the elastic rotation restoration part. Additionally, as described above, a serrated surface may be provided to expand the contact area.

In addition, the elastic rotation restoration unit 450 may have a shape corresponding to the shape of FIG. 36(b) or the shape of FIG. 36(c), as described above, depending on the manufacturing method. .

The elastic rotation restoration part 450 may have at least one groove part 452. The second auxiliary protrusions 414 and 424 may be coupled to the groove 452. The arc-shaped first and second protrusions 412 and 42 may support the outer peripheral surface of the elastic rotation restoration part 450. At this time, the arc-shaped outer peripheral surfaces of the first and second protrusions 412 and 42 may be in contact with the elastic rotation restoration part so that relative movement is not permitted, or may be simply arranged to allow relative movement. .

Furthermore, as shown on the far right side of FIG. 40, one of the toothbrush head portion 410 and the toothbrush handle portion 420 may have a shape with a groove of a predetermined depth therein. In this case, the elastic rotation restoration unit 450 may be fitted into the groove (Z-axis direction). This shape can be understood as a shape in which the first and/or second protrusions described with reference to FIG. 36 and the like entirely surround the elastic rotation restoration unit 450.

In addition, even when the shape shown on the right side of FIG. 40 is adopted as at least one of the toothbrush head portion 410 and the toothbrush handle portion 420, the previously described protrusions may be additionally provided, and auxiliary protrusions may also be additionally provided. You can. Alternatively, the protrusion may be omitted and only an auxiliary protrusion may be provided. For example, the toothbrush head 410 is provided with a protrusion and an auxiliary protrusion in the rightmost drawing shape of FIG. 40, and the toothbrush handle 420 is provided with only auxiliary protrusions in the rightmost drawing shape of FIG. 40. It may be possible.

Also, according to one example, the number of grooves 452 of the elastic rotation restoration part may be at least one to correspond to the number of auxiliary protrusions.

Hereinafter, another modified example of the present invention will be described with reference to FIG. 41. We will only explain the differentiated components and omit explanations of overlapping parts. This modification is different from other embodiments in that the toothbrush head can be detached from the toothbrush handle.

Referring to FIG. 41A, this modified example may include a toothbrush head portion 410, a toothbrush handle portion 420, and an elastic rotation restoration portion 450 therebetween.

A fastening portion 460 for attaching and detaching the toothbrush handle portion 420 may be provided on one side of the toothbrush head portion 410. According to one example, the fastening part 460 may include two protrusions 462 and 464 like chopsticks.

The fastening part 460 may penetrate the inside of the elastic rotation restoration part 450 and be coupled to the toothbrush handle part 420.

Referring to FIG. 41B, the elastic rotation restoration part 450 and the toothbrush handle part 420 may have a predetermined opening for fastening the fastening part 460. The width D1 of the opening of the elastic rotation restoration part 450 and the width D2 of the opening of the toothbrush handle part 420 may be larger than the protrusions 462 and 464.

Meanwhile, when twisting occurs for the toothbrush rotation method, twisting may occur due to rotation R between the protrusions 462 and 464, as shown in FIG. 41D. That is, a predetermined angle may be generated between the virtual line B extending from one end of the protrusions 462 and 464 and the virtual line A extending from the other end of the protrusions 462 and 464. As the angle between one end and the other end of the protrusions 462 and 464 is restored, a strong toothbrush rotational force can be generated. At this time, the elastic rotation restoration part 450 may provide a restoring force so that the angle generated between one end and the other end of the protrusions 462 and 464 is quickly restored. Furthermore, in order to form the occurrence angle, as shown in FIG. 41C showing the cross section C of FIG. 41B, a twist path portion ( 425) may be provided in the circumferential direction of the toothbrush handle portion 420. Additionally, a block portion 427 may be provided to block the path of the twist path portion 425 to prevent excessive twisting. In addition, the elastic The opening inside the rotation restoration unit 450 may also have a shape such that the twist angle can occur. For example, the opening has an 11-shaped shape to accommodate the fastening part 460, thereby generating the twist angle. For this purpose, it may also have a spiral-shaped opening. In addition, when the twist angle is more than a predetermined amount, the opening shape may be provided so that a restoring force is generated. Meanwhile, the twist path portion 425 and the block portion 427 may be omitted. Of course.

In the modified example described with reference to FIG. 41, the toothbrush handle portion 410 and the fastening portion 460 may be manufactured integrally.

Additionally, in the modified example described with reference to FIG. 41, the elastic rotation restoration part 450 and the toothbrush handle part 420 may be manufactured through the double injection or insert injection process described above.

As described above, the elastic rotation restoration part 450 may be made of a material more flexible than the toothbrush handle part 410, the fastening part 460, and the toothbrush handle part 420. Additionally, the protrusions 462 and 464 of the fastening portion 460 may be made of a material that forms the twist angle described with reference to FIG. 41D and minimizes unwanted degrees of freedom.

Meanwhile, in order to smoothly generate a twist angle of the fastening part 460, the fastening part 460 may be made of a material somewhat more flexible than the toothbrush head part 410, like the elastic rotation restoration part 450. In this case, the fastening part 460 and the toothbrush head part 410 may be manufactured through a double injection or insert process.

In the modified example referring to FIG. 41, it is assumed that one end of the fastening portion 460 is fastened to the toothbrush handle portion 450, but alternatively, it may be fastened to the elastic rotation restoration portion 450.

Meanwhile, there may be one protrusion (462, 464) instead of two as shown, or there may be three or more protrusions (462, 464). If there is one, the protrusion may be located in the center.

Hereinafter, with reference to FIG. 42, a modified example in which the technical idea of the present invention is applied to a molar toothbrush (molar elastic toothbrush) will be described. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 42a, the elastic molar toothbrush according to an embodiment of the present invention may include a toothbrush head portion 410, a toothbrush handle portion 420, and an elastic rotation restoration portion 450 therebetween.

In this modified example, toothbrush bristles (B) are provided at one end of the toothbrush head portion 410, and the bristles (B) may be planted in a narrow area to perform the role of a normal molar toothbrush. For molar toothbrushes, please refer to the link (http://item.gmarket.co.kr/Item?goodscode=859705121).

Figure 42b shows a state in which the elastic rotation restoration unit 450 is not shown. For reference, the elastic rotation restoration part 450 may be provided between the toothbrush head part 410 and the toothbrush handle part 420. Furthermore, the elastic rotation restoration unit 450 may be provided to surround at least one of the outer peripheral surfaces of at least one end of the toothbrush head unit 410 and at least one external peripheral surface of the toothbrush handle unit 420.

In Figure 42c, the elastic rotation restoration unit 450 is not shown, but a first protrusion 412 is provided at one end of the toothbrush head unit 410, and a second protrusion 422 is provided at one end of the toothbrush handle unit 420. ) shows a case where it is provided. This is to enable rotation and restoration in the R direction in Figure 42a and limit the degree of freedom in other directions.

The elastic rotation restoration part 450 is not shown in Figure 42d, but a first protrusion 412 is provided at one end of the toothbrush head 410, and a second protrusion 422 is provided at one end of the toothbrush handle 420. ) shows a case where it is provided. This is to enable rotation and restoration in the R direction in Figure 42a and limit the degree of freedom in other directions. At this time, the molar elastic toothbrush according to this modification has a first protrusion 412 and a second protrusion 422, considering that the toothbrush head portion 410 forms a predetermined angle from the extension line of the toothbrush handle portion 420. ), one end of at least one of the protrusions may be formed to be inclined.

In the modified examples described with reference to FIGS. 42C and 42D, the shapes of the first and second protrusions are not limited thereto and may vary.

Additionally, as shown in Figure 42e, the toothbrush head portion 410 has a bent structure, the toothbrush handle portion 420 is spaced apart from it, and an elastic rotation restoration portion (not shown) may be provided between them. In this case, the technical idea of the embodiment described above with reference to FIGS. 1 to 41 may be applied.

Figure 43 is a diagram for explaining another modified example of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figures 43a and 43b, the elastic toothbrush according to an embodiment of the present invention may include a toothbrush head part 410, a toothbrush handle part 420, and a first elastic rotation restoration part 452 therebetween. there is.

For reference, Figure 43A shows a plan view and Figure 43B shows a side view.

The first elastic rotation restoration unit 452 may have a plate-like structure with a somewhat wide width (W) and a thin thickness (D), as shown in FIG. 43C. It may be arranged so that the width faces a plane, or it may be arranged so that the width faces the side.

Since the first elastic rotation restoration unit 452 has a plate-shaped structure that is somewhat wide and thin, it may be possible to store and release torsional (R) elastic energy.

According to one example, the first elastic rotation restoration unit 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of the first elastic rotation restoration part 452 may be in the range of 0.1 mm to 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

That is, even if the first elastic rotation restoration part 452 is made of plastic, if it has a thin plate-like structure, torsional deformation that twists the toothbrush about its longitudinal axis occurs, and thus torsional elastic energy storage and release may be possible. One end of the first elastic rotation restoration unit 452 is defined as A in FIG. 43C, and the other end is defined as C in FIG. 43. In this case, Figure 43D is a diagram explaining the twist phase of the first elastic rotation restoration unit 452 in areas A and B when twisting occurs, viewed from the F direction. As shown, the twist angle may be, for example, 90 degrees in area B compared to area A.

Continuing to look at V1 of FIG. 43C, the thickness D of the first elastic rotation restoration part 452 is not constant in its longitudinal direction (from the toothbrush head to the toothbrush handle direction) and there may be a somewhat thin point such as D'. there is. This is to make the twisting of the first elastic rotation restoration part 452 more smooth. Of course, the longitudinal thickness of the first elastic rotation restoration part 452 may be constant. In this technical spirit, the width of the first elastic rotation restoration part 452 in the longitudinal direction may be different.

Looking at V2 of FIG. 43C, the first elastic rotation restoration unit 452 may further have a leg 453. The leg 453 may be disposed on one side, for example, at the bottom, of the first elastic rotation restoration part 452 along its longitudinal direction. Accordingly, the first elastic rotation restoration unit 452 may have a reclining U-shape. This is to create a strong restoring force after torsion.

Referring to FIG. 43E, a second elastic rotation restoration part 454 may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, it may not be wrapped.

In the modified example described with reference to FIG. 43, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic or an eco-friendly material. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a wide and thin plate shape, so it can be twisted and restored.

The second elastic rotation restoration part 454 is made of a material more flexible than the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420, for example, a thermoplastic resin series, It can be manufactured in rubber-based, silicone-based, or polymer-based products. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

This technical idea can also be applied to the molar toothbrush described with reference to FIG. 42.

Meanwhile, the description has been made assuming that the number of the first elastic rotation restoration units 452 is one, but of course, there may be a plurality of them.

Additionally, this technical detail is applicable to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. As shown in Figure 44, the first elastic rotation restoration part 452 is provided on the toothbrush head part 410 side, and the second elastic rotation restoration part 454 is provided on the toothbrush handle part 420 side. You can. In this case, the first elastic rotation restoration unit 452 may be inserted into the second elastic rotation restoration unit 454 and coupled to the second elastic rotation restoration unit 454. ) can also be coupled to the toothbrush handle portion 420.

Meanwhile, for sturdiness, as shown in FIG. 44, an end toothbrush handle portion 422 may be further provided. The end toothbrush handle portion 422 may be manufactured from the same material as the toothbrush handle portion 420. Although not shown, the end toothbrush handle portion 422 and the toothbrush handle portion 420 may be connected through a connection portion connecting them. The connection portion may be manufactured from the same material as the end toothbrush handle portion 422 and the toothbrush handle portion 420 through the same injection process. The connection part can hold the end toothbrush handle part 422 and the toothbrush handle part 420 as a single body during the injection process, thereby facilitating the subsequent double injection process of the second elastic rotation restoration part 454. . That is, when the end toothbrush handle portion 422 and the toothbrush handle portion 420 are manufactured as two bodies during the injection process, difficulties in double injection design and steps can be resolved.

At this time, the path of the end toothbrush handle portion 422 through which the first elastic rotation restoration portion 452 passes may be wider than the second elastic rotation restoration portion 454.

In explaining FIG. 44, it is assumed that the first elastic rotation restoration part is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush handle side. In addition, it was assumed that the second elastic rotation restoration unit is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush head portion side.

Figure 45 is a diagram for explaining an elastic toothbrush according to another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 45, the elastic toothbrush according to an embodiment of the present invention may include a toothbrush head portion 410, a toothbrush handle portion 420, and a first elastic rotation restoration portion 452 therebetween. In the embodiment described with reference to FIG. 45, it is assumed that the technical idea of the present invention is applied to a molar toothbrush, but it can of course be applied to a general toothbrush.

The first elastic rotation restoration unit 452 may have a plate-shaped structure with a somewhat narrow width and a thick thickness, as shown in FIG. 45 . It can be seen that the thickness and width direction of the plate are different from the embodiment described with reference to FIG. 43.

According to one example, the first elastic rotation restoration unit 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of the first elastic rotation restoration part 452 may be in the range of 0.1 mm to 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

Since the first elastic rotation restoration unit 452 has a plate-shaped structure that is somewhat wide and thin, it may be possible to store and release torsional elastic energy. Torsional deformation occurs that twists the toothbrush about its longitudinal axis, and thus torsional elastic energy storage and release may be possible. This is the same as previously described with reference to FIGS. 43c and 43d.

Furthermore, the first elastic rotation restoration unit 452 described with reference to FIG. 45 may further include the leg described with reference to V2 in FIG. 43 .

Additionally, a hole may be provided in the first elastic rotation restoration unit 452.

For a more detailed description, please refer to FIG. 47. Referring to Figure 47 (a side view of the elastic toothbrush shown in Figure 45; color is not considered), it can be seen that the first elastic rotation restoration part 452 is provided with a hole 452h. The size and location of the hole 452h may be determined in consideration of the ease of twisting, the size of the restoring force, and the ease of manufacturing of the first elastic rotation restoration part 452. According to one example, as shown in FIG. 47A, the hole 452h may be provided in the longitudinal direction of the elastic toothbrush, and the first elastic rotation restoration part 452 may have two branches, upper and lower. That is, the first elastic rotation restoration unit 452 is divided into two branches by the hole 452h. Alternatively, the first elastic rotation restoration unit 452 may be composed of three or more branches. Additionally, as shown in FIG. 47B, a plurality of holes 452h may be provided in the longitudinal direction of the elastic toothbrush. For reference, the coupling force between the first elastic rotation restoration unit 452 and the second elastic rotation restoration unit, which will be described later, may be improved by the hole 452h.

As previously described with reference to FIG. 43E, a second elastic rotation restoration unit 454 may be provided on the surface of the first elastic rotation restoration unit 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, it may not be wrapped.

Figure 47 shows an example of the second elastic rotation restoration unit 452. Referring to FIG. 47, a predetermined pattern may be formed on the outside of the second elastic rotation restoration part 454 to enable deformation when the first elastic rotation restoration part 452 is twisted or untwisted. Inside the second elastic rotation restoration unit 454, a hole corresponding to the shape and size of the first elastic rotation restoration unit 452 may be provided to surround at least a portion of the first elastic rotation restoration unit 452. there is.

In the modified example described with reference to FIG. 45 , the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a wide and thin plate shape, so it can be twisted and restored.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

This technical idea can be applied without limitation to molar toothbrushes, general toothbrushes, etc.

Additionally, this technical detail is applicable to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. This is the same as described with reference to FIG. 44. Additionally, for robustness, as described with reference to FIG. 44, an end toothbrush handle portion 422 may be further provided. The end toothbrush handle portion 422 may be manufactured from the same material as the toothbrush handle portion 420. Although not shown, the end toothbrush handle portion 422 and the toothbrush handle portion 420 may be connected through a connection portion connecting them. The connection portion may be manufactured from the same material as the end toothbrush handle portion 422 and the toothbrush handle portion 420 through the same injection process. The connection part can hold the end toothbrush handle part 422 and the toothbrush handle part 420 as a single body during the injection process, thereby facilitating the subsequent double injection process of the second elastic rotation restoration part 454. . That is, when the end toothbrush handle portion 422 and the toothbrush handle portion 420 are manufactured as two bodies during the injection process, difficulties in double injection design and steps can be resolved.

At this time, the path of the end toothbrush handle portion 422 through which the first elastic rotation restoration portion 452 passes may be wider than the second elastic rotation restoration portion 454.

In the description of FIG. 44, it is assumed that the first elastic rotation restoration part is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush handle side. In addition, it was assumed that the second elastic rotation restoration unit is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush head portion side.

FIG. 46A shows a case where the first elastic rotation restoration unit 452 according to FIG. 45 is formed of two branches. For reference, the top of Figure 46A is an overall perspective view, and the bottom is an enlarged view. In the example referring to Figure 46A, a molar toothbrush is illustrated, but of course it can be applied to general toothbrushes and various other fields.

As shown in FIG. 46A, the first elastic rotation restoration unit 452 may be composed of two branches extending in the longitudinal direction. At this time, to reinforce strength, the two branches extending in the longitudinal direction may be connected to each other by a connecting bar. An injection molding source inlet may be located on one side of the connection bar. Through this, easy injection of the injection product source may be possible. Additionally, for strength reinforcement, the two longitudinally extending branches may be provided with reinforcing ribs facing one side (outward or inward as shown).

Since other descriptions are the same as those described with reference to FIGS. 45, 47 (hole 452h), and 48 (second elastic rotation restoration unit 454), descriptions will be omitted.

Figure 49 is a diagram for explaining an elastic toothbrush according to another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 49, the elastic toothbrush according to an embodiment of the present invention may include a toothbrush head portion 410, a toothbrush handle portion 420, and a first elastic rotation restoration portion 452 therebetween. In the embodiment described with reference to FIG. 49, it is assumed that the technical idea of the present invention is applied to a molar toothbrush, but it can of course be applied to a general toothbrush.

The first elastic rotation restoration unit 452 may have a positive cross-section as shown in FIGS. 49A and 49B (FIG. 49B shows a longitudinal cross-section of the elastic rotation restoration unit 452 in FIG. 49A). Also, according to one example, referring to Figure 49B(b), which shows a cross-section of the first elastic rotation restoration unit 452 in the direction of the arrow in Figure 49B(a), the first elastic rotation restoration unit 452 in the direction of the coordinate system ) may be provided, and the first elastic rotation restoration unit 452 may be provided in a direction inclined at 45 degrees to the coordinate system. In addition, the direction of the wings of the elastic rotation restoration unit 452 may vary. Also, according to one example, the first elastic rotation restoration unit 452 is made of two plate shapes, but of course, it may be made of three or more plates. That is, in the case of two plates, there are four wings, and in addition, wings such as 5, 6, 7, 8, 9, and 10 can be provided.

According to one example, the first elastic rotation restoration unit 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of each wing may be between 0.1 mm and 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

Since the first elastic rotation restoration unit 452 has a plate-shaped + cross-sectional shape, it may be possible to store and release torsional elastic energy. This is the same as previously described with reference to FIGS. 43c and 43d. That is, since the first elastic rotation restoration unit 452 has a plate-shaped + cross-sectional shape, it can maintain its shape without being deformed even when an external force is applied, as shown in FIG. 49B. That is, deformation of the first elastic rotation restoration unit 452 in an unintended direction is minimized, and torsional deformation that twists about the longitudinal direction of the toothbrush occurs, thereby making it possible to store and release torsional elastic energy.

According to one example, in order to increase rigidity against external force, the thickness of the + cross-sectional shape on the plate of the first elastic rotation restoration unit 452 may vary depending on the direction. For example, at least one of the blades in a direction parallel to the toothbrush bristles may be thicker than the blades in the other direction.

Additionally, a hole may be provided in the first elastic rotation restoration unit 452. This is the same as described with reference to FIG. 46.

As previously described with reference to FIG. 43E, a second elastic rotation restoration unit 454 may be provided on the surface of the first elastic rotation restoration unit 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, the second elastic rotation restoration unit 454 may be omitted.

According to one example, at least one hole may be provided in the first elastic rotation restoration unit 452 along the longitudinal direction of the first elastic rotation restoration unit 452. For example, three holes may be provided. Within this hole, the second elastic rotation restoration unit 454 may be provided. If the first elastic rotation restoration part 452 is made of a material harder than the second elastic rotation restoration part 454, that is, the first elastic rotation restoration part 452 is made of plastic, and the second elastic rotation restoration part 452 is made of plastic. When the elastic rotation restoration unit 454 is made of a rubber material, when the first elastic rotation restoration unit 452 is twisted by the rotation method, the hole shape of the first elastic rotation restoration unit 452 is deformed. It can happen. When the second elastic rotation restoration unit 454 is provided inside the hole of the first elastic rotation restoration unit 452, the second elastic rotation restoration unit 454 may also be deformed by deforming the shape of the hole. That is, the second elastic rotation restoration unit 454 can be compressed and deformed, and the second elastic rotation restoration unit 454 can also provide restoring force while restoring the compressed deformed shape. To this end, the second elastic rotation restoration unit 454 may be provided in a dot shape to fill only the hole of the first elastic rotation restoration unit 452, and may be arranged to cover other parts in addition to the hole. there is. In this example, not only when the first elastic rotation restoration unit 452 has a +-shaped cross section, but also when it has a single branch shape as described with reference to FIGS. 43, 44, and 45, FIG. 46 As explained with reference, it can also be applied in the case of having two parallel branch shapes.

Meanwhile, the second elastic rotation restoration unit 454 may have a concave-convex shape, for example, a mesh structure, on the surface as shown in Figure 48. However, since the first elastic rotation restoration unit 452 has a +-shaped cross section, , A second elastic rotation restoration part 454 may be formed at an angled portion of the + shape.

In the modified example described with reference to FIG. 49, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a thin cross-sectional shape of + shape as shown in FIG. 49, so it can be twisted and restored. According to one example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be made of at least one material selected from the group consisting of eco-friendly plastic, biodegradable material, and metal.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

This technical idea can be applied without limitation to molar toothbrushes, general toothbrushes, etc.

Additionally, this technical detail is applicable to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. This is the same as described with reference to FIG. 44. Additionally, for robustness, as described with reference to FIG. 44, an end toothbrush handle portion 422 may be further provided. The end toothbrush handle portion 422 may be manufactured from the same material as the toothbrush handle portion 420. Although not shown, the end toothbrush handle portion 422 and the toothbrush handle portion 420 may be connected through a connection portion connecting them. The connection portion may be manufactured from the same material as the end toothbrush handle portion 422 and the toothbrush handle portion 420 through the same injection process. The connection part can hold the end toothbrush handle part 422 and the toothbrush handle part 420 as a single body during the injection process, thereby facilitating the subsequent double injection process of the second elastic rotation restoration part 454. . That is, when the end toothbrush handle portion 422 and the toothbrush handle portion 420 are manufactured as two bodies during the injection process, difficulties in double injection design and steps can be resolved.

At this time, the path of the end toothbrush handle portion 422 through which the first elastic rotation restoration portion 452 passes may be wider than the second elastic rotation restoration portion 454.

In the description of FIG. 44, it is assumed that the first elastic rotation restoration part is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush handle side. In addition, it was assumed that the second elastic rotation restoration unit is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush head portion side.

Figure 50 shows another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 50, the elastic toothbrush according to an embodiment of the present invention includes a toothbrush head portion 410, a toothbrush handle portion 420, a first elastic rotation restoration portion 452 between them, and a first elastic rotation restoration portion. It may include a second elastic rotational restoration part 454 surrounding at least a portion of 452 . The second elastic rotation restoration unit 454 may be omitted.

In the embodiment described with reference to FIG. 50, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

The first elastic rotation restoration unit 452 may have a positive cross-section in the longitudinal direction, as described with reference to FIG. 49 . At this time, the + shape of the first elastic rotation restoration part 452 may be provided to increase toward the toothbrush handle part 420. Torsional deformation occurs that twists the toothbrush about its longitudinal axis, and thus torsional elastic energy storage and release may be possible.

According to one example, the first elastic rotation restoration unit 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of the first elastic rotation restoration part 452 may be in the range of 0.1 mm to 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

The first elastic rotation restoration unit 452 is made of two plate shapes, but of course, it can be made of three or more plates.

Additionally, a hole may be provided in the first elastic rotation restoration unit 452. This is the same as described with reference to FIG. 47. In addition, as in the example described with reference to FIG. 49, at least one hole is provided, and the second elastic rotation restoration part can provide restoration force after compression deformation.

A second elastic rotation restoration part 454 may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, the second elastic rotation restoration unit 454 may be omitted.

Meanwhile, the example of the second elastic rotation restoration unit 454 is the same as that described with reference to FIG. 48. However, since the first elastic rotation restoration unit 452 has a +-shaped cross section, the second elastic rotation restoration unit 454 may be formed at an angled portion of the + shape.

In the modified example described with reference to FIG. 50, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a thin cross-sectional shape of + shape, so it can be twisted and restored.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

Additionally, this technical detail is applicable to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. This is the same as described with reference to FIG. 44. Additionally, for robustness, as described with reference to FIG. 44, an end toothbrush handle portion 422 may be further provided. The end toothbrush handle portion 422 may be manufactured from the same material as the toothbrush handle portion 420. Although not shown, the end toothbrush handle portion 422 and the toothbrush handle portion 420 may be connected through a connection portion connecting them. The connection portion may be manufactured from the same material as the end toothbrush handle portion 422 and the toothbrush handle portion 420 through the same injection process. The connection part can hold the end toothbrush handle part 422 and the toothbrush handle part 420 as a single body during the injection process, thereby facilitating the subsequent double injection process of the second elastic rotation restoration part 454. . That is, when the end toothbrush handle portion 422 and the toothbrush handle portion 420 are manufactured as two bodies during the injection process, difficulties in double injection design and steps can be resolved.

Figure 51 shows another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 51, the elastic toothbrush according to an embodiment of the present invention includes a toothbrush head portion 410, a toothbrush handle portion 420, a first elastic rotation restoration portion 452 between them, and a first elastic rotation restoration portion. It may include a second elastic rotational restoration part 454 surrounding at least a portion of 452 . The second elastic rotation restoration unit 454 may be omitted.

In the embodiment described with reference to FIG. 51, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

The first elastic rotation restoration unit 452 may have a bent shape as shown. From another perspective, the virtual longitudinal extension line of the toothbrush head portion 410 and the virtual longitudinal extension line of the toothbrush handle portion 420 have a bent shape, and the first elastic rotation restoration portion 452 connects them. 1 The elastic rotation restoration unit 452 may have a bent shape. At this time, the first elastic rotation restoration part 452 may also have a thin plate shape to enable twisting and restoration.

Additionally, a hole may be provided in the first elastic rotation restoration unit 452. This is the same as described with reference to FIG. 47. In addition, as in the example described with reference to FIG. 49, at least one hole is provided, and the second elastic rotation restoration part can provide restoration force after compression deformation.

A second elastic rotation restoration part 454 may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, the second elastic rotation restoration unit 454 may be omitted.

In the modified example described with reference to FIG. 51, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a thin cross-sectional shape of + shape, so it can be twisted and restored.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

Figure 52 shows another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 51, an elastic toothbrush according to an embodiment of the present invention may include a toothbrush head portion 410 and a toothbrush handle portion 420.

At this time, the toothbrush handle portion 420 may have a U-shape in cross section so that it has a torsional elastic restoring force. The thickness of the U shape may be thin enough to enable longitudinal axis torsional deformation. For example, the thickness of the U shape may be between 0.1 mm and 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

Although not shown, the second elastic rotation restoration unit 454 described with reference to FIG. 51 may be provided on one side, for example, at least part of the U-shaped inner side of the toothbrush handle unit 420.

In the embodiment described with reference to FIG. 52, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

Figure 53 shows another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 53, the elastic toothbrush according to an embodiment of the present invention includes a toothbrush head portion 410, a toothbrush handle portion 420, a first elastic rotation restoration portion 452 between them, and a first elastic rotation restoration portion. It may include a second elastic rotational restoration part 454 surrounding at least a portion of 452 . The second elastic rotation restoration unit 454 may be omitted.

In the embodiment described with reference to FIG. 53, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

The first elastic rotation restoration unit 452 may have a curved shape along the longitudinal direction of the first elastic rotation restoration unit 452. At this time, the first elastic rotation restoration unit 452 may be composed of at least two layers. The first elastic rotation restoration unit 452 may also have twisting and restoring force. For this purpose, the cross section may have a thin plate shape.

Additionally, a hole may be provided in the first elastic rotation restoration unit 452. This is the same as described with reference to FIG. 47. In addition, as in the example described with reference to FIG. 49, at least one hole is provided, and the second elastic rotation restoration part can provide restoration force after compression deformation.

A second elastic rotation restoration part 454 may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, the second elastic rotation restoration unit 454 may be omitted.

Meanwhile, the hole may be formed on the outside of the second elastic rotation restoration part 454, rather than on the inside.

In the modified example described with reference to FIG. 53, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

Additionally, this technical detail can also be applied to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. This is the same as described with reference to FIG. 44.

Figure 54 shows another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 54, the elastic toothbrush according to an embodiment of the present invention includes a toothbrush head portion 410, a toothbrush handle portion 420, a first elastic rotation restoration portion 452 between them, and a first elastic rotation restoration portion. It may include a second elastic rotational restoration part 454 surrounding at least a portion of 452 . The second elastic rotation restoration unit 454 may be omitted.

In the embodiment described with reference to FIG. 54, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

The first elastic rotation restoration part 452 includes a first protrusion 452a protruding from the toothbrush head 410 and a second protrusion 452b protruding from the toothbrush handle 420. . The first protrusion 452a and the second protrusion 452b may be assembled to enable relative rotation about the longitudinal direction of the toothbrush. Here, the fact that relative rotation is possible may mean that the longitudinal axis of the second protrusion 452b is not rotated in conjunction with the longitudinal axis rotation of the first protrusion 452a.

To this end, the first protrusion 452a may be inserted into the longitudinal hollow of the second protrusion 452b in the direction of the arrow in FIG. 54. Conversely, unlike shown, the second protrusion 452b may be inserted into the longitudinal hollow of the first protrusion 452a in the direction of the arrow in FIG. 54.

Additionally, a hole may be provided in the first elastic rotation restoration unit 452. This is the same as described with reference to FIG. 47. In addition, as in the example described with reference to FIG. 49, at least one hole is provided, and the second elastic rotation restoration part can provide restoration force after compression deformation. Torsional deformation occurs that twists the toothbrush about its longitudinal axis, and thus torsional elastic energy storage and release may be possible.

A second elastic rotation restoration part 454 may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration unit 454 may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420.

Meanwhile, a concave portion or hole may be formed on the outside of the second elastic rotation restoration part 454, rather than on the inside.

According to one example, a sleeve (not shown) may be provided between the outer surface of the first elastic rotation restoration part 452 and the inner surface of the second elastic rotation restoration part 454. The sleeve may be shaped to at least partially surround the first elastic rotation restoration part 452 in the circumferential direction. As a result, the sleeve can prevent the second elastic rotation restoration part 454 and the first elastic rotation restoration part 452 from coming into direct contact. The sleeve may be omitted.

The second elastic rotation restoration unit 454 is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head portion 410, and the toothbrush handle portion 420, that is, a flexible material. For example, it can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part 454.

The first protrusion 452a and the second protrusion 452b are capable of relative rotation, and the second elastic rotation restoration part 454 is formed at least on a portion of the outer peripheral surface where the first protrusion 452a and the second protrusion 452b are joined. By wrapping,

1. The second elastic rotation restoration unit 454 can provide elastic twist and restoration force when brushing teeth using the rotation method,

2. Rigidity is ensured in the assembled state of the first protrusion 452a and the second protrusion 452b, and the phenomenon of unintentional pushing during tooth brushing can be minimized.

In this embodiment, the first elastic rotation restoration part 452 includes a first protrusion 452a protruding from the toothbrush head 410 and a second protrusion 452b protruding from the toothbrush handle 420. ), but any structure that allows relative rotation between the toothbrush head portion 410 and the toothbrush handle portion 420 may be possible.

For example, as shown in Figure 54, a first protrusion 452a is provided protruding and extending from the toothbrush head portion 410, and the first protrusion 452a is inside the toothbrush handle portion 420. An inlet may be provided. In this case, unlike Figure 54, the second protrusion 452b may be omitted.

For another example, as shown in FIG. 54, a second protrusion 452b is provided protruding and extending from the toothbrush handle 420, and the second protrusion 452b is provided on the toothbrush head 410. An inlet leading into the interior may be provided. In this case, the first protrusion 452a may be omitted.

According to one example, an opening is provided on one side of the toothbrush handle portion 420, and the first protrusion 452a penetrates the second protrusion 452b and opens the toothbrush handle portion 420. It can be exposed through. Accordingly, the user can press the exposed first protrusion 452a, and whether the toothbrush head 410 rotates may vary depending on whether the user presses the exposed first protrusion 452a. Through this, when the user wants to brush their teeth with a rotational method, they do not press the exposed first protrusion 452a, but on the contrary, when they want to brush their teeth with a rotational method, they can press the exposed first protrusion 452a. The exposed first protrusion 452a may be at least partially covered by the second elastic rotation restoration part 454.

According to another example, a rod may be provided instead of the first protrusion 452a and the second protrusion 452b. The rod may, for example, be shaped like a rod of long circular cross-section. The rod may be configured separately from the toothbrush head 410 and the toothbrush handle 420, but may be coupled to the toothbrush head 410 and the toothbrush handle 420 so as to be rotatable relative to them. To enable relative rotation, a hole may be provided at one end of the toothbrush head 410 and one end of the toothbrush handle 420 between the toothbrush head 410 and the toothbrush handle 420. there is. That is, the rod can be rotated relative to one end of the toothbrush head portion 410, and may also be rotated relative to one end of the toothbrush handle portion 420. Here, the second elastic rotation restoration part 454 may be disposed to surround at least a portion of the rod, the toothbrush head part 410, and the toothbrush handle part 420. That is, the rod, the toothbrush head part 410, and the toothbrush handle part 420 can be coupled by the second elastic rotation restoration part 454.

55 to 60 are diagrams for explaining another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts. FIG. 55 shows the appearance of another embodiment, FIG. 56 shows a plan cross-section, FIG. 57 shows a side cross-section, FIG. 58 shows a first protrusion 412, and FIG. 59 shows a second protrusion 422. ) is shown.

55 to 60, the elastic toothbrush according to an embodiment of the present invention includes a toothbrush head portion 410, a toothbrush handle portion 420, a first elastic rotation restoration portion 452, and a second elastic rotation restoration portion. It may include at least one of (454). The second elastic rotation restoration unit 454 may be omitted.

In the embodiment described with reference to FIGS. 55 to 60, it is assumed that the technical idea of the present invention is applied to a general toothbrush, but it can of course be applied to a molar toothbrush.

The toothbrush head portion 410 and the toothbrush handle portion 420 may be separate, independent components. A first protrusion 412 may be provided at one end of the toothbrush head portion 410. A second protrusion 422 may be provided at one end of the toothbrush handle 420. The first protrusion 412 may extend and protrude in the direction of the toothbrush handle portion 420, and the second protrusion 422 may extend and protrude in the direction of the toothbrush head portion 410.

At this time, an empty space may be provided inside the first protrusion 412. To this end, the first protrusion 412 may have the shape of a hollow circular cylinder. An empty space may also be provided inside the second protrusion 422. To this end, the second protrusion 422 may have the shape of a hollow circular cylinder. Accordingly, when the toothbrush head portion 410 and the toothbrush handle portion 420 are coupled, a rotation-accommodating hollow (E) may be provided therein.

As shown in FIGS. 56 and 57, one end of the first protrusion 412 may be inclined downward in the direction of the toothbrush handle portion 420 as it moves radially outward from the toothbrush rotation receiving hollow (E), It may be horizontal in the Y-axis direction, or, on the contrary, may be inclined upward toward the toothbrush head portion 410 as it goes outward in the radial direction. The second protrusion 422 may be aligned with the first protrusion 412.

The toothbrush head part 410 may be provided with a first elastic rotation restoration part 452 in the direction of the toothbrush handle part 420. For example, the first elastic rotation restoration part 452 may extend through at least a portion of the rotation receiving hollow (E). The first elastic rotation restoration unit 452 may have a plate-shaped structure with a somewhat narrow width and a thick thickness. That is, as in FIG. 56 showing the plane of FIG. 55, the first elastic rotation restoration part 452 is relatively narrow in the width direction (Y direction), and as in FIG. 57 showing the side of FIG. 55, the first elastic rotation restoration part 452 The elastic rotation restoration part 452 may be relatively thick in the height direction (Z direction). Accordingly, the first elastic rotation restoration unit 452 can undergo torsional deformation and release restoration force when brushing teeth using the rotation method. The shape of the first elastic rotation restoration unit 452 is an example, and as described above, the width and height directions may be reversed, the cross section may be a + shape, and the cross section may have fewer or more wings than the + shape. It may have two plates arranged side by side.

The first elastic rotation restoration part 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of the first elastic rotation restoration part 452 may be in the range of 0.1 mm to 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

Hereinafter, it will be assumed that the shape of the first elastic rotation restoration unit 452 is the shape shown in FIGS. 56 and 57.

In order for the first elastic rotation restoration part 452 to emit torsional deformation and restoration energy about the longitudinal axis of the toothbrush, when the toothbrush head part 410 and the toothbrush handle part 420 are coupled, the first elastic rotation restoration part 452 1 One end of the elastic rotation restoration part 452 may be accommodated in the receiving port (C, see FIG. 59) provided on one side of the toothbrush handle part 420.

After the toothbrush head portion 410 and the toothbrush handle portion 420 are coupled, at least a portion of the first protrusion 412 and the second protrusion 422 is surrounded by a second elastic rotation restoration portion 454. You can. The second elastic rotation restoration part 454 may function as a binder that couples the toothbrush head part 410 and the toothbrush handle part 420.

The toothbrush head portion 410, the first protrusion 412, the first elastic rotation restoration portion 452, the toothbrush handle portion 420, and the second protrusion 422 are made of hard material, and the second elastic rotation The restoration portion 454 may be made of soft material. For example, the hard material may be made of at least one of plastic, eco-friendly material, and biodegradable plastic, and the soft material may be made of at least one of thermoplastic resin series, rubber series, silicone series, and polymer series.

Due to the above-described coupling relationship and material relationship, when brushing teeth using the rotation method, the first elastic rotation restoration part 452 is torsionally deformed within the rotation receiving hollow E, and the second elastic rotation restoration part 454 ) is also transformed to stretch in the circumferential direction around the X axis. Accordingly, the first elastic rotation restoration unit 452 and the second elastic rotation restoration unit 454 can provide elastic restoration force in either direction in the S direction of FIG. 57.

Unlike the above-described example, the second elastic rotation restoration part 454 may fill at least a portion of the rotation receiving hollow (E).

In the above-described example, the toothbrush head portion 410, the first protrusion 412, and the first elastic rotation restoration portion 452 are injected as one part, and the toothbrush handle portion 420 and the second protrusion 422 are It can be injected separately as a different part.

For another example, the toothbrush head portion 410, the first protrusion 412, the first elastic rotation restoration portion 452, the toothbrush handle portion 420, and the second protrusion 422 may be injected as one part. It may be possible. In this case, the receiving port (C) may be omitted. Additionally, the second elastic rotation restoration unit 454 may be arranged by connecting the first protrusion 412 and the second protrusion 422 that can move with respect to the first protrusion 412 . Accordingly, the second elastic rotation restoration unit 454 can store and release torsional elastic energy.

In addition, in the above-described example, it is assumed that the first protrusion 452 and the second protrusion 454 are provided, but either one may be omitted. In this case, the remaining protrusion may further extend in the direction of the omitted protrusion, and the second elastic rotation restoration part 454 may be filled.

In addition, in the above-described example, it was assumed that the first elastic rotation restoration part 452 extends from the inside of the toothbrush head part 410 toward the toothbrush handle part 420. However, unlike this, the first elastic rotation restoration part 452 ) may extend from the inside of the toothbrush handle portion 420 toward the toothbrush head portion 410. In this case, a receiving port may be provided inside the toothbrush head portion 410.

Additionally, in the above-described example, it is assumed that the first elastic rotation restoration unit 452 and the second elastic rotation restoration unit 454 provide elastic rotation restoration force, but either one may be omitted.

For example, the first elastic rotation restoration unit 452 may be omitted. In this case, the second elastic rotation restoration unit 454 may provide elastic rotation restoration force. Furthermore, the rotation receiving hollow E may still be hollow, or may be omitted and filled with a toothbrush head portion or a toothbrush handle portion.

For another example, the second elastic rotation restoration unit 454 may be omitted. In this case, the first elastic rotation restoration unit 454 may provide elastic rotation restoration force.

According to one example, an opening (not shown) may be provided on one side of the toothbrush handle portion 420. For example, the opening may be a receiving port (C,) provided on one side of the toothbrush handle portion 420. (See Figure 59), it may be provided at the lower end (at the lower end in the direction opposite to the toothbrush head portion). The first elastic rotation restoration portion 452 may penetrate the receiving port C and be exposed through an opening of the toothbrush handle portion 420.

Accordingly, the user can press the exposed first elastic rotation restoration part 452, and whether the toothbrush head 410 rotates may vary depending on whether the user presses it. Through this, when the user wants to brush their teeth with a rotational method, they do not press the exposed first elastic rotational restoration part 452, but on the contrary, when they want to brush their teeth with a rotational method, they can press the exposed first elastic rotational restoration part 452. there is. The exposed first elastic rotation restoration part 452 may be at least partially covered by the second elastic rotation restoration part 454.

Additionally, for convenience of pressing, the first elastic rotation restoration part 452 may be wider in the Y direction in the exposed opening than in the toothbrush rotation receiving hollow (E).

Figure 60 is a modified example explained with reference to Figures 55 to 59. We will mainly explain the differentiated composition.

The toothbrush handle portion 420 may be provided with a protrusion 424. The first elastic rotation restoration part 452 may be fitted so as to be rotatable relative to the protrusion 424. In this case, the second elastic rotation restoration unit 454 may store and release torsional strain energy around the longitudinal axis of the toothbrush. At this time, the first elastic rotation restoration part 452 can reinforce strength against external force by being inserted into the protrusion 424. The first elastic rotation restoration unit 452 may simply function as a rotation unit.

To this end, the first elastic rotation restoration unit 452 may have the shape of a long bar with a circular cross-section. The protrusion 424 may have a shape that allows the first elastic rotation restoration part 452 to rotate relative to the inside of the protrusion 424.

Unlike the arrangement relationship in the above-described example, a component serving as the first elastic rotation restoration unit 452 may be provided in the toothbrush handle unit 420 rather than the toothbrush head unit 410. In this case, the protrusion 424 may be provided in the toothbrush head portion 410.

Other descriptions, such as other structural materials, are the same as those previously described with reference to FIGS. 55 to 59.

Figure 61 is a diagram for explaining another embodiment of the present invention. We will only explain the differentiated components and omit explanations of overlapping parts.

Referring to Figure 61, the elastic toothbrush according to an embodiment of the present invention may include a toothbrush head portion 410, a toothbrush handle portion 420, and a first elastic rotation restoration portion 452 therebetween. In the embodiment described with reference to FIG. 61, it is assumed that the technical idea of the present invention is applied to a molar toothbrush, but it can of course be applied to a general toothbrush.

As shown in FIG. 61, the first elastic rotation restoration unit 452 has a spiral screw shape and may have a predetermined thin thickness to enable storage and release of torsional energy deforming around the longitudinal axis of the toothbrush. . From another perspective, it can be understood as having the thin plate-shaped elastic rotation restoration part spiral structure described with reference to FIG. 45. Furthermore, the first elastic rotation restoration unit 452 may have a double helix structure like a base structure.

The first elastic rotation restoration part 452 may have a thin thickness to enable longitudinal axis torsional deformation. For example, the thickness of the first elastic rotation restoration part 452 may be in the range of 0.1 mm to 1.2 mm. More specifically, the wings may have any of the following thicknesses: 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, and 1.2mm. This is an example, and is possible as long as the thickness is capable of being twisted along the longitudinal axis of the toothbrush.

The thickness of the first elastic rotation restoration part 452 may vary depending on the direction. For example, it may become thicker in the direction from the toothbrush head portion 410 to the toothbrush handle portion 420.

In addition, the spiral structure of the first elastic rotation restoration unit 452 may have a phase change of one period in the direction from the toothbrush head unit 410 to the toothbrush handle unit 420, or may have a phase change of less or more than this. there is.

Additionally, the spiral structure of the first elastic rotation restoration unit 452 may have a shorter or longer pitch distance in the direction from the toothbrush head unit 410 to the toothbrush handle unit 420. If the pitch distance becomes longer and thicker, the elastic torsional force may be provided more strongly near the toothbrush head portion 410.

As described above, a second elastic rotation restoration part may be provided on the surface of the first elastic rotation restoration part 452. One end and the other end of the second elastic rotation restoration part may surround at least a portion of one end of the toothbrush head portion 410 and at least a portion of one end of the toothbrush handle portion 420. Of course, the second elastic rotation restoration unit 454 may be omitted.

According to one example, at least one hole may be provided in the first elastic rotation restoration unit 452 along the longitudinal direction of the first elastic rotation restoration unit 452. For example, three holes may be provided. Within this hole, the second elastic rotation restoration part may be provided. If the first elastic rotation restoration part 452 is made of a harder material than the second elastic rotation restoration part, that is, the first elastic rotation restoration part 452 is made of plastic, and the second elastic rotation restoration part is made of plastic. If the additional elastic rotation restoration part 452 is made of a rubber material, if the first elastic rotation restoration part 452 is twisted by the rotation method, the hole shape of the first elastic rotation restoration part 452 may be deformed. When the second elastic rotation restoration unit is provided inside the hole of the first elastic rotation restoration unit 452, the second elastic rotation restoration unit may also be deformed by deforming the shape of the hole. That is, the second elastic rotation restoration unit can be compressed and deformed, and the second elastic rotation restoration unit can also provide restoring force while restoring the compressed deformed shape. To this end, the second elastic rotation restoration unit may be provided in a dot shape to fill only the hole of the first elastic rotation restoration unit 452, or may be arranged to cover other parts other than the hole.

Meanwhile, the second elastic rotation restoration unit (as shown in FIG. 48 may have a concave-convex shape on the surface, for example, a mesh structure).

In the modified example described with reference to FIG. 61, the first elastic rotation restoration part 452 may be formed integrally with at least one of the toothbrush head part 410 and the toothbrush handle part 420. For example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be manufactured through a single injection process. From another perspective, the first elastic rotation restoration part 452 may be made of the same material as the toothbrush head part 410 and the toothbrush handle part 420, for example, plastic. That is, even if the first elastic rotation restoration part 452 is made of plastic, it has a thin plate-like cross-sectional shape as shown in FIG. 61, so it can be twisted and restored. According to one example, the first elastic rotation restoration part 452, the toothbrush head part 410, and the toothbrush handle part 420 may be made of at least one material selected from the group consisting of eco-friendly plastic, biodegradable material, and metal.

The second elastic rotation restoration unit is made of a material that has greater deformation against external force than the first elastic rotation restoration unit 452, the toothbrush head unit 410, and the toothbrush handle unit 420, that is, a flexible material, for example, It can be manufactured from thermoplastic resin series, rubber series, silicone series, and polymer series. That is, the double injection or insert process described above can be used to manufacture the second elastic rotation restoration part.

This technical idea can be applied without limitation to molar toothbrushes, general toothbrushes, etc.

Additionally, this technical detail can also be applied to the method of attaching and detaching the toothbrush head portion 410 to the toothbrush handle portion 420. This is the same as described with reference to FIG. 44. Additionally, for robustness, as described with reference to FIG. 44, an end toothbrush handle portion 422 may be further provided. The end toothbrush handle portion 422 may be manufactured from the same material as the toothbrush handle portion 420. Although not shown, the end toothbrush handle portion 422 and the toothbrush handle portion 420 may be connected through a connection portion connecting them. The connection portion may be manufactured from the same material as the end toothbrush handle portion 422 and the toothbrush handle portion 420 through the same injection process. The connection part can hold the end toothbrush handle part 422 and the toothbrush handle part 420 as a single body during the injection process, thereby facilitating the subsequent double injection process of the second elastic rotation restoration part. That is, when the end toothbrush handle portion 422 and the toothbrush handle portion 420 are manufactured as two bodies during the injection process, difficulties in double injection design and steps can be resolved. At this time, the path of the end toothbrush handle portion 422 through which the first elastic rotation restoration portion 452 passes may be wider than the second elastic rotation restoration portion. In the description of FIG. 44, it is assumed that the first elastic rotation restoration part is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush handle side. In addition, it was assumed that the second elastic rotation restoration unit is disposed on the toothbrush head portion, but alternatively, it may be disposed on the toothbrush head portion side.

In the present specification, embodiments may be combined with each other in various ways. That is, the toothbrush head part of a specific drawing, the toothbrush handle part of another drawing, and the elastic rotation restoration part of another drawing can be combined in various ways.

In addition, as described above, the surface of the elastic rotation restoration unit 450 (applicable to the first and second elastic rotation restoration units) may have irregularities formed on the surface to facilitate storage and release of elastic energy, for example, , a mesh structure in the diagonal direction (see diagonal mesh direction 230 in FIG. 10) may be formed. Of course, other than the mesh direction, vertical and/or horizontal directions and combinations thereof are also possible. Additionally, in the case of the molar elastic toothbrush described with reference to FIG. 42, the concave-convex structure may have a predetermined shape to enable smooth rotation when the toothbrush head portion and the toothbrush handle portion are at a predetermined angle.

The embodiments described above with reference to FIGS. 1 to 61 were aimed at toothbrushes, but the technical idea of the present invention can be applied to other products as an elastic restoration mechanism. In other words, it is not just for the purpose of restoring the rotational stability of toothbrush bristles, but can also be applied to applications for other purposes. For example, it can be applied to animal toothbrushes, molar toothbrushes, tongue cleaners, ear muffs, industrial multi-joints, razors, and various other structures for human, industrial, and household use (there is no limit to the scope of application). For example, when applied to a tongue cleaner, the posture of the tongue cleaner portion can be changed to correspond to the curved surface of the tongue, thereby enabling close cleaning. Furthermore, when applied to ear muffs, unintentional force is prevented from being applied to the ear by deformation of the elastic deformation allowance portion, and the efficiency of the ear muffler can be improved because elastic force can be added to the ear muff force. Additionally, when applied to a razor, the elastic deformation restoration portion may be provided between the razor blade and the shaving handle and may be deformed so that the razor blade can make good contact with the skin. In other words, the technical idea of the present invention is not mainly limited to the illustrated toothbrush, but can be utilized in various fields.

According to one example, the bending strength of toothbrush bristles may vary depending on the posture of the toothbrush bristles. For example, for the rotation method, the bristles of the toothbrush can be easily bent under a small external force while leaning against the surface of the teeth as a preparatory motion. When an external force is provided through the handle, the toothbrush bristles are bent to a certain extent. As the degree of bending increases, more force (toothbrush handle manipulation force) is required to bend further. Accordingly, the bending strength of the elastic rotation restoration unit (meaning at least one of the elastic rotation restoration unit, the first elastic rotation restoration unit, and the second elastic rotation restoration unit) according to the present embodiment is determined by the shape of the toothbrush bristles (toothbrush bristles according to tooth brushing) It can be determined by considering the bending shape of . For example, the stretched state in which no external force is applied to the toothbrush bristles (i.e., before the start of toothbrushing) is most easily bent by external force, and the elastic rotation restoration unit (elastic rotation restoration unit, first elastic rotation restoration unit, and second elastic rotation restoration unit) (meaning at least one of the restoration parts) may have a bending strength such that it begins to twist when a stronger external force is applied to it by brushing.

At least a portion of the elastic rotation restoration unit (meaning at least one of the elastic rotation restoration unit, the first elastic rotation restoration unit, and the second elastic rotation restoration unit) according to the present embodiment may be located outside the mouth when brushing teeth. .

According to one example, the toothbrush head and toothbrush handle may be manufactured from plastic, eco-friendly materials, biodegradable plastic, or silicone-based.

According to one example, the shape of the toothbrush bristles described with reference to FIG. 3 may also be applied to other embodiments.

Above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted in accordance with the appended claims. Additionally, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

Claims (7)

A toothbrush head portion provided with toothbrush bristles on one outer peripheral surface in the longitudinal direction;
a toothbrush handle portion connected to the longitudinal rear end of the toothbrush head portion and extending in one direction so that the user can hold it with his or her hand; and
A first elastic rotation restoration unit provided between the toothbrush head and the toothbrush handle, allowing rotation of the toothbrush handle and rotation of the toothbrush head based on the rotation of the toothbrush handle,
When a force is applied to the toothbrush handle by the user to rotate the toothbrush handle in one direction about the longitudinal axis while the toothbrush bristles are in pressurized contact with the user's teeth or gums, the first elastic rotation is restored. The portion allows rotation of the toothbrush handle portion through axial torsional deformation of the first elastic rotation restoration portion,
When the pressurized adhesion of the toothbrush bristles from the user's teeth or gums is released while the axial torsional energy resulting from the axial torsional deformation of the first elastic rotation restoration unit is stored in the first elastic rotation restoration unit, the first elastic rotation restoration The toothbrush head unit rotates in the same direction as the toothbrush handle unit and releases the stored axial twist energy to the toothbrush head unit so that the teeth or gums can be brushed by the toothbrush bristles,
The toothbrush head portion, the toothbrush handle portion, and the first elastic rotation restoration portion form a single body made of the same material,
The first elastic rotation restoration unit is made of at least one plate-shaped member whose length in one direction is thinner than the length in the other direction in the cross section for the axial torsional deformation and the axial torsional energy storage and release. Guide elastic toothbrush.
According to claim 1,
The first elastic rotation restoration unit is a toothbrushing guide elastic toothbrush in which a cross-section made of the at least one plate-shaped member forms a + shape.
According to claim 1,
A toothbrushing guide elastic toothbrush wherein the first elastic rotation restoration part becomes wider or thicker in the direction of the toothbrush head or the toothbrush handle.
According to clause 2,
When the cross-section of the first elastic rotation restoration part has a + shape, the + shape of the cross-section of the first elastic rotation restoration part increases in the direction of the toothbrush head or the toothbrush handle part, the toothbrush guide elastic toothbrush.
In paragraph 1
For the axial torsional deformation, the axial torsional energy storage and release, the thickness defined as the length in one direction thinner than the length in the other direction of the plate-shaped member in the cross section is 0.1 mm to 1.2 mm or less, brushing Guide elastic toothbrush.
According to claim 1,
It further includes a second elastic rotation restoration part surrounding at least a portion of the first elastic rotation restoration part,
A toothbrushing guide elastic toothbrush, wherein the second elastic rotation restoration unit is made of a material that has a greater axial torsional strain than the first elastic rotation restoration unit when force is applied to the toothbrush handle by the user.
According to clause 6,
The toothbrush head portion, the toothbrush handle portion, and the first elastic rotation restoration portion are manufactured through a first injection process,
The second elastic rotation restoration unit is manufactured by a second injection process following the first injection process.