KR100808449B1 - Attachment and deattachment structure for separable tooth brush - Google Patents

Abstract

A connection structure of a separable toothbrush is provided to make the head part detachable from a handle part easily, to promote a long life, and to prevent shaking of the head part in toothbrushing. A connection structure of a separable toothbrush includes: a handle part(20) comprising a handle body(21), a neck part(22) with an inner fixing groove(22-1), and a first screw part(24); the head part(10) comprising a head(12) with brushes(11), and an insertion tool(13) integrally formed on the head and inserted into the inner fixing groove; and a closure cap(30) having an insertion hole into which the insertion tool and neck part are inserted, and a second screw part corresponding to the first screw part. The head part is detachable from the handle part by fastening and unfastening of the first and second screw parts.

Description

Attachment and Deattachment Structure For Separable Tooth Brush}

1 is an exploded cross-sectional view of a coupling structure of a conventional detachable toothbrush.

Figure 2 is a side cross-sectional view of a coupling structure of a conventional detachable toothbrush.

3 is an exploded perspective view of a detachable toothbrush according to the present invention.

4 is an exploded cross-sectional view of a detachable toothbrush according to the present invention.

5A and 5B are combined cross-sectional views illustrating examples of a detachable toothbrush according to the present invention.

6 is a perspective view illustrating a coupling state of the detachable toothbrush and the neck of the detachable toothbrush according to another exemplary embodiment of the present invention.

-Explanation of symbols for the main parts of the drawings-

100: detachable toothbrush according to the invention

10: toothbrush head portion 11: brush head

12: Toothbrush Head 13: Insertion Outlet

13-1: Insertion groove 14: Seating plate

14-1: Lower protrusion 20: Handle portion

21: handle body 22: neck branch

22-1: internal fixing groove 23: nip protrusion

23-1: protrusion 24: first threaded portion

30: closure cap 31: insertion hole

32: 2nd screw part 33-1: Insertion groove

33-2: Bottom part of seat plate support

The present invention relates to a detachable structure of a detachable toothbrush, and more particularly, by detaching and detaching the toothbrush head by combining a screw fastening method and a forced press method, not only the toothbrush head part from the handle part is easily detachable, but also the life is long. It relates to a detachable structure of a detachable toothbrush that can prevent shaking of the toothbrush head in use.

In general, the toothbrush is made by planting (bristle) several strands of bristles on the tip of the handle part made of synthetic resin, which is that the bristles are made of a hard synthetic resin material, which may damage the gums by the bristles when brushing.

In addition, in the case of the toothbrush constituting the mother-in-law made of synthetic resin material, thousands of bacteria inhabit this mother-in-law, which may cause cold or gum disease, so the toothbrush replacement cycle should be changed to about 3 months.

However, since most people determine the replacement cycle of the toothbrush according to the damage of the hair transplant, there is a problem that a cold or gum disease occurs.

In order to solve such a problem, recently, a detachable toothbrush capable of detaching and coupling a toothbrush head part has been developed so that only the head part can be replaced and reused when the bristles are severely opened or worn out.

One example of such a conventional detachable toothbrush, as shown in Figures 1 and 2 to form a fixing groove 111 having a semi-circular projection 112 at the front end of the handle portion 110, the rear end of the head portion 120 The protrusion part 121 which has the semicircular groove 122 is formed in this.

When the protrusion 121 of the toothbrush head 120 is inserted into the fixing groove 111 of the handle 110 by this structure, the protrusion 112 is fixed while being fitted into the recess 122, and the handle 110 is fixed. ) And the toothbrush head 120 are forcibly pulled out from each other, and the protrusion 112 is detached by the external force while being separated from the groove 122.

However, the conventional detachable toothbrush has to pull the handle 110 and the toothbrush head 120 by force, so that the toothbrush head is not easily detached from the handle and the toothbrush head portion is repeatedly attached and detached. As a result, the wear of the protrusion 112 and the recess 122 is severely generated, and the locking state is poor.

As a result, the toothbrush is prematurely damaged, and thus the life is short, and the quality of the toothbrush is degraded.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to easily detach and detach the toothbrush head from the handle portion by detaching and detaching the toothbrush head by using a screw fastening method and a forced press method. It is to provide a detachable toothbrush detachable structure which has a long life and can prevent the toothbrush head from shaking during use.

Detachable structure of the removable toothbrush according to the present invention for achieving the above object, the handle body for gripping (把持); A handle portion comprising a neck portion having an internal fixing groove formed at the front end of the body, and a spiral first screw portion formed at an outer circumference of the neck portion; A toothbrush head comprising a toothbrush head in which bristles are planted, and an insertion hole formed integrally with the rear end of the toothbrush head and inserted into and inserted into an internal fixing groove of the neck portion; An insertion hole into which the toothbrush head part is inserted and removed and the neck portion of the toothbrush head part is formed in the center thereof, and a lower second thread part corresponding to the spiral first thread part is formed in the lower side of the insertion hole along the inner circumference thereof. And a closure cap; and the handle part and the toothbrush head part are detachable by fastening and loosening the first and second screw parts.

Here, a plurality of spaced apart projections are formed toward the upper end along the periphery of the upper end of the neck portion, and is preferably inclined and press-fitted while tightening inward from the upper side of the insertion hole of the closure cap.

In addition, a projection toward the center is formed at an upper inner side of each of the sandwiching projections, and is pushed into a ring-shaped insertion groove formed at an upper side of the cylindrical insertion hole by a forced press-fit method. This is preferred.

In addition, a disk-shaped mounting plate is formed on the upper side of the ring-shaped insertion groove along the circumference of the insertion hole, and is forcedly pressed into the mounting plate supporting object formed inside the upper side of the insertion hole of the closure cap. It is preferable to be settled by the pressure by the method of ().

In addition, the lower protrusion is formed along the outer periphery of the bottom of the disk-shaped seating plate, it is preferable that the insertion is inserted into the insertion groove formed on the seating plate support.

In addition, the cross-sectional shape of the inserting groove and the internal fixing groove corresponding to the neck portion may be any one of a circle, a polygon, a star, and an oval.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. .

3 is an exploded perspective view of the detachable toothbrush according to the present invention, FIG. 4 is an exploded cross-sectional view of the detachable toothbrush according to the present invention, and FIGS. 5A and 5B are combined cross-sectional views showing examples of the coupled state of the detachable toothbrush according to the present invention. For convenience, it will be described together.

As shown, the detachable toothbrush 100 according to the present invention includes a handle portion 20 for the user to grip the toothbrush, a toothbrush head portion 10 on which the bristles 11 are planted, and the handle. Consists of a closure cap 30 for attaching and detaching the portion 20 and the toothbrush head 10.

The handle part 20 has a generally long cylindrical shape, a neck part having a handle body 21 for gripping and an inner fixing groove 22-1 formed at the tip of the handle body 21. 22) and a plurality of spaced-apart clamping protrusions spaced toward the distal end along the circumferential edge of the first threaded portion 24 formed on the outer circumference of the neck portion 22 and the distal end (top) of the neck portion 22 ( 23).

Here, a part of the cylindrical inserting hole 13 of the toothbrush head 10, which will be described later, is inserted into the hollow neck portion 22, and the plurality of pinching protrusions 23 are formed at the leading edge of the neck portion. Since it is protruded inclined inwardly circularly as it goes along, the remaining part of the cylindrical insertion / exit 13 is tightened and enclosed by the inner upper part of the closure cap 30. As shown in FIG.

In addition, a protrusion 23-1 facing the center is formed at an upper inner side of each of the sandwiching protrusions 23, and is forced by an undercut to a ring-shaped insertion groove 13-1 of the cylindrical inserting-out hole 13 to be described later. It can be pressed by a press-fit method.

The toothbrush head 11 is integrally formed at the rear end (lower end) of the toothbrush head 12 and the toothbrush head 12 where the bristles 11 are planted, and the neck portion 22 of the handle part 20. It consists of an approximately cylindrical insertion opening 13 inserted in and out of it.

Here, a ring-shaped insertion groove 13-1 protruding along the upper outer circumference of the cylindrical inserting outlet 13 is optionally formed so that each of the pinching protrusions when the toothbrush head 10 is fastened. The projection 23-1 which protrudes toward the center inside the upper part of 23 is press-fitted by a forced press method by an undercut.

In addition, the ring-shaped insertion groove 13-1 is formed on the upper side of the insertion hole 13, in the form of a substantially disc-shaped seating plate 14. It can be mounted on the seating plate support 33 formed in the upper side of the insertion hole 31 of 30 (refer FIG. 5A).

Here, the lower protrusion 14-1 is formed along the outer periphery of the bottom of the disc-mounted seating plate 14, and an insertion groove formed on the seating plate support 33, which will be described later, at the time of fastening. 33-1), so that it can be inserted (see FIG. 5A).

However, the disc-shaped seating plate 14 is seated and fixed on the seating plate support 33 by forced pressing by an undercut when the closure cap 30 is fastened, and is pressed into the inside to be inserted. Due to the protruding seating plate support 33, there may be a slight obstacle to the fastening, so that the outer circumferential surface of the seating plate 14 and the top of the closure cap 30 are not formed without forming the seating plate support 33 protruding inwardly. The upper end of the plurality of pinching protrusions 23 slightly inclined inward in the state in which the inner side is abutted may be forced by pressing downward (see FIG. 5B).

The closure cap 30 has an approximately cylindrical shape in which the upper and lower portions penetrate through the opening, and in the center thereof, an approximately cylindrical insertion hole 13 of the toothbrush head portion 10 and a neck portion 22 of the handle portion 10 is formed. An approximately circular insertion hole 31 into which a back is inserted is formed, and a lower portion of the insertion hole 31 is formed in a spiral shape formed at an outer circumference of the neck portion 22 of the handle part 20 along its inner circumference. It consists of the 2nd screw part 32 of the spiral corresponding to the 1 screw part 24, and fastened or loosened by rotation in a fixed direction.

In addition, a mounting plate support 33 extending inwardly is formed at an upper side of the insertion hole 31 of the closure cap 30 to form an approximately disc-shaped uppermost portion of the cylindrical insert 13. The seating plate 14 is adapted to be seated at the time of fastening.

Of course, since the insertion groove 33-1 is formed on the seat plate support 33, the lower protrusion 14-1 formed along the outer circumference of the bottom of the disc-shaped seat plate 14 is inserted. Thus, the seating plate 14 can be easily seated on the seating plate support 33.

In addition, the bottom portion 33-2 of the seating plate support 33 is inclined slightly inward at the time of fastening to force the upper ends of the plurality of sandwiching projections 23 protruding and at the same time the upper portion of each clamping projection 23 The inner protrusion 23-1 can be press-fitted in a ring-shaped insertion groove 13-1 of the cylindrical insertion hole 13 by an undercut according to a forced press method.

Referring to the detachable operation of the removable toothbrush 100 according to the present invention having such a configuration as follows.

First, in the state in which the handle portion 10 and the toothbrush head portion 10 are separated, the cylindrical inserting hole 13 of the toothbrush head portion 10 is fixed inside the circular portion 22 of the neck portion 22 of the handle portion 10. Insert into the groove 22-1.

In this state, the upper and lower portions of the closure cap 30 is passed through the insertion hole 31 from the bristle 11 side of the toothbrush head 10, and then formed inside the closure cap 30. 2 The threaded portion 32 and the spiral first threaded portion 24 formed on the outer circumference of the neck portion 22 of the handle portion 20 are engaged with each other at the initial stage. Here, the insertion of the closure cap 30 toward the bristles is made only at the first production plant, and when the consumer uses it after shipment, the closure cap 30 is detachable only near the neck portion 22 so that the closure cap ( The risk of contamination of the bristles by 30) does not occur at all.

Subsequently, when the closure cap 30 is continuously rotated in the winding direction (for example, the right direction), the first and second threaded portions 24 and 32 of the spiral shape are fully engaged to be fastened and fastened. The head portion 10 is fixed without shaking at all and does not come off unless an artificial force is applied. At this time, the bottom portion 33-2 of the seating plate support 33 is tightened by forcibly pressing the upper ends of the plurality of pinching protrusions 23 which are slightly inclined to the inside, and tightening each pinching protrusion 23 at the same time. The upper inner projection 23-1 is press-fitted to the ring-shaped insertion groove 13-1 of the cylindrical insertion hole 13 by a forced press method, and the seating plate support 33 The lower protrusion 14-1 formed along the outer periphery of the bottom of the seating plate 14 is inserted into the upper insertion groove 33-1, and the seating plate 14 is forcedly pressed onto the seating plate support 33. It is fully seated and fixed by the pressing by the insertion method (refer FIG. 5A).

Of course, as described above, there may be some obstacles to the fastening due to the inwardly projecting seat plate support 33 is inserted by force, so that the seat plate 14 without the seat plate support 33 projecting inward In the state in which the outer circumferential surface of the upper end of the closure cap 30 is in contact with each other, the upper end of the plurality of pinching protrusions 23 slightly inclined inward may be forced to be tightened downward (see FIG. 5B).

In this state, the user can easily hold the handle 20 to brush their teeth.

In addition, when the bristle 10 of the toothbrush head 10 is opened or the tip of the bristles is worn out and replaced with a new one, the closure cap 30 is continuously rotated in the unwinding direction (for example, the left direction). In the reverse order, the user can easily separate the toothbrush head 10 from the handle 20.

Figure 6 is a partial perspective view showing a coupling state of the detachable toothbrush and the neck portion of the removable toothbrush according to another embodiment of the present invention.

In the detachable toothbrush 200 according to another exemplary embodiment of the present invention illustrated in FIG. 6, the insertion hole 13A has a rectangular shape and an internal fixing groove 22-1 of the neck portion 24 corresponding thereto. Except that the cross section of the square is substantially the same as the structure of the removable toothbrush 100 of Figures 1 to 3, the same parts are shown with the same reference numerals.

That is, the shape of the insertion and discharging opening 13A is square and the cross-sectional shape of the internal fixing groove 22-1 of the neck portion 24 corresponding to the rectangular shape is also square so that the toothbrush head 10 at the time of actual fastening is closed. Rotation can be prevented at the source.

In addition, in the illustrated example, the cross-sectional shape of the insert and the internal fixing groove is square, but may be formed in a polygonal shape such as a rhombus, a triangular or a pentagon, a star or an ellipse, and the like. If the structure can be prevented, the shape of the present invention is not limited.

As described above, according to the detachable structure of the detachable toothbrush according to the present invention, the first screw portion formed in the outer circumference of the neck portion of the handle portion and the second screw portion of the corresponding closure cap are fastened and loosened. Toothbrush head portion can be easily detached from the handle portion is not only long life, but also has the effect of preventing the toothbrush head portion shake in actual use.

Further, in addition to the screw fastening described above, the toothbrush head portion and the handle portion are fastened by pressure assembly by undercut, thereby making the fastening structure more firm.

While the present invention has been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention, but are also within the scope of the invention. You must understand.

Claims (6)

A handle portion comprising a handle body for gripping, a neck portion having an internal fixing groove formed at the tip of the body, and a spiral first screw portion formed at an outer circumference of the neck portion; A toothbrush head comprising a toothbrush head in which bristles are planted, an insertion hole formed integrally with the rear end of the toothbrush head and inserted into and inserted into an internal fixing groove of the neck part; An insertion hole into which the toothbrush head part is inserted and removed and the neck portion of the toothbrush head part is formed in the center thereof, and a lower second thread part corresponding to the spiral first thread part is formed in the lower side of the insertion hole along the inner circumference thereof. With closure cap, The handle part and the toothbrush head part are detached by fastening and loosening the first and second screw parts, and a plurality of spaced apart pinching protrusions are formed along the periphery of the upper end of the neck part toward the upper end to close the cap. It is inclined and press-fitted from the upper side of the insertion hole of the indentation, and a projection toward the center is formed in the upper inner side of each of the sandwiching projections to force the press-fit into the ring-shaped insertion groove formed on the upper side of the cylindrical insert. It is press-fitted by a method, and a disk-shaped mounting plate is formed along the circumference of the insertion hole on the upper side of the ring-shaped insertion groove, and the inner side is formed on the upper side of the insertion hole of the closure cap at the time of the fastening. A detachable structure of a detachable toothbrush, wherein the detachable toothbrush is seated on a plate supporting object by a pressure press method. delete delete delete The method of claim 1, The lower protrusion is formed along the outer periphery of the bottom surface of the disc-shaped seating plate, and is inserted into an insertion groove formed in the seating plate support object at the time of fastening. The method of claim 1, Detachable structure of the detachable toothbrush, characterized in that the cross-sectional shape of the insert and the corresponding inner fixing groove of the neck portion is any one of a circle, a polygon, a star and an oval.

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