JP2023012577A - Handled toiletry - Google Patents

Abstract

To provide a heavy-duty handled toiletry capable of suppressing a manufacturing cost, while reducing an environmental load.SOLUTION: A handled toiletry 1 is formed by removably connecting a head part 10 and a handle part 20 to become a handle, and the handled toiletry 1 comprises the handle part 20 being a thin rod-shaped cylinder made of paper, and the head part 10 including a thin rod-shaped insertion part 16 to be removably inserted into the cylinder of the handle part 20, the insertion part 16 including a spiral projection 16a configured to rotate around an axis in the insertion, come into contact with an inner wall surface of the handle part 20 and advance in the depth by friction, formed therein. Further, the spiral projection 16a is formed at a position lowered from the insertion tip of the insertion part 16. An outer diameter of a ridgeline of the spiral projection 16a is larger than the inner diameter of the handle part 20 by 0.05 to 0.3 mm.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a toilet article with a handle, such as a toothbrush or a razor.

Toiletries with handles such as toothbrushes and razors have been provided for a long time. environmental problems such as global warming and microplastics.

On the other hand, toothbrushes using materials other than plastic have also been provided. discloses that the entire toothbrush is formed from a paper material comprising plant fibers. Plants such as trees are renewable resources, and can reduce the environmental load compared to plastic toothbrushes.

JP-A-5-168527 Japanese Patent Application Laid-Open No. 2003-325231

However, a toothbrush with a wooden handle as disclosed in Patent Document 1 is difficult to spread widely because the manufacturing cost is significantly higher than that of a plastic toothbrush.

In general, paper is softer than plastic and weakens when it gets wet with water. Therefore, if the entire toothbrush other than the bristles is made of paper, the durability is low and the toothbrush becomes fragile.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a handle-equipped washcloth that is durable and can be manufactured at a low cost while reducing environmental load.

In order to solve the above problems, a handle-equipped washcloth according to the present invention is a handle-equipped washcloth in which a head portion and a handle portion serving as a handle are detachably connected, wherein the handle portion is made of thin rod-shaped paper. The head portion is a thin rod-shaped insertion portion that is detachably inserted into the cylinder of the handle portion. It is characterized by comprising an insertion part formed with a helical projection configured to contact and advance to the back by friction.

According to the handle-equipped toilet article of the present invention, the head part and the paper handle part can be firmly connected in a detachable manner, and it is durable while reducing the environmental load, and the manufacturing cost can be suppressed. .

FIG. 1 is a diagram showing the configuration of a toothbrush according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the head section according to the embodiment of the present invention. FIG. 3 is an enlarged view showing a connecting portion between the head portion and the handle portion according to the embodiment of the present invention. FIG. 4 is a diagram showing the configuration of a head section according to a modification of the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, an example will be described in which the present invention is applied to a toothbrush 1 as a washcloth having a handle (handle) that is gripped by the user when used.

FIG. 1(A) is a side view of the entire toothbrush 1, and FIG. 1(B) is a front view of the entire toothbrush 1. FIG. 2A is a perspective view of the head section 10, and FIG. 2B is a front view of the head section 10. FIG. FIG. 3 shows the handle portion 20 with a portion removed.

The toothbrush 1 includes a head portion 10 having tufts 11 forming a brush, and a handle portion 20 which is a handle that a user holds by hand when brushing teeth. In this embodiment, the plastic head portion 10 and the paper handle portion 20 are detachably connected. The handle portion 20 can be separated and discarded.

The handle portion 20 is a thin stick-shaped paper cylinder (paper tube), and both ends thereof are open. The head portion 10 includes a hair bundle 11, a neck portion 15, and an insertion portion 16 located on the hand side of the neck portion 15 (handle portion 20 side).

The insertion portion 16 is a thin rod portion that is inserted into the cylinder from one opening 20 a of the handle portion 20 when connecting with the handle portion 20 , and is thicker than the neck portion 15 . The insertion portion 16 is formed with a male thread 16a having a predetermined screw length at a position slightly lowered from the insertion tip on the hand side.

A flat rod portion 16b having no male screw is formed at the connection portion between the front end portion of the male screw 16a of the insertion portion 16 and the neck portion 15 on the hair tip side. In addition, a tapered portion 16c that tapers further toward the insertion tip is formed at the front end portion of the flat rod portion 16b of the insertion portion 16 on the hand side.

Here, the outer diameter, which is the maximum diameter of the screw thread of the male screw 16a, is φ8.4 mm, and the root diameter, which is the minimum diameter of the male screw 16a, is φ8 mm. The outer diameter of the flat rod portion 16b of the insertion portion 16 is φ8 mm, and the inner diameter of the cylinder (paper tube) of the handle portion 20 is φ8.2 mm.

Thus, the maximum diameter of the male screw 16a of the insertion portion 16 inserted into the cylinder of the handle portion 20 is slightly (0.2 mm) larger than the inner diameter of the handle portion 20, and the flat rod portion 16b is slightly (0.2 mm) smaller in diameter than the inner diameter of handle portion 20 .

Therefore, when inserting the insertion portion 16 into the cylinder of the handle portion 20 when connecting the head portion 10 and the handle portion 20, the taper portion 16c and the flat rod portion 16b at the insertion tip of the insertion portion 16 are not cylindrical. However, even if the male screw 16a is pushed in as it is, the ridge line portion of the thread at the tip of the male screw 16a is caught in the opening 20a of the handle portion 20 and cannot be inserted into the cylinder.

However, in this embodiment, since the maximum diameter of the screw thread of the male screw 16a is slightly larger than the inner diameter of the handle portion 20 by 0.2 mm, the head portion 10 is rotated clockwise around its longitudinal axis. By screwing the male screw 16a into the handle portion 20 while rotating, the male screw 16a advances into the handle portion 20 one by one in the same manner as screw feeding, and the head portion 10 and the handle portion 20 are firmly connected.

Here, only the male screw 16a is formed in the insertion portion 16 on the side of the head portion 10, and the internal wall surface of the opening 20a portion of the handle portion 20 is not formed with the male screw 16a. Screwed into the portion 20 is that the ridgeline of the screw thread of the male screw 16a, which is slightly larger than the inner diameter of the handle portion 20, contacts the inner wall surface of the handle portion 20, thereby forming a flexible cylindrical handle portion made of paper. It is considered that the screw is screwed in by friction while slightly expanding and deforming 20 .

In addition, when the head portion 10 and the handle portion 20 are detached from each other once connected, the head portion 10 is rotated counterclockwise around the axis with respect to the handle portion 20, and the insertion portion 16 is moved by reverse screw feeding. The male screw 16a is fed back from the inside of the handle portion 20 to the outside, and the portion of the male screw 16a of the insertion portion 16 comes out from the opening 20a, whereby the head portion 10 and the handle portion 20 are disconnected. be.

The sizes of the insertion portion 16 and the handle portion 20 described above can be changed as appropriate. It may be configured so as to be smaller than the inner diameter of 20 .

Specifically, if the maximum diameter of the male screw 16a of the insertion portion 16 is in the range of 0.05 to 0.4 mm and is slightly larger than the inner diameter of the handle portion 20, the male screw 16a can be rotated around the axis. The ridgeline portion advances deep by friction while contacting the inner wall surface of the handle portion 20, and the insertion portion 16 and the handle portion 20 can be firmly connected detachably.

The structure of the toothbrush 1 has been described above. According to this embodiment, the head portion 10 and the handle portion 20 are separately separated before use, so that the toothbrush can be stored compactly. The head part 10 and the handle part 20 can be easily and firmly connected by screw feeding.

In addition, in this embodiment, by using paper as the material of the handle portion 20, the amount of plastic used in the entire toothbrush 1 can be greatly reduced, and the toothbrush 1 that has a low environmental load and is friendly to the environment can be provided. can. Moreover, since the head portion 10 is mainly made of plastic, it is excellent in water resistance and strong.

In addition, when the toothbrush 1 is discarded after use, it can be easily separated into the head part 10 made of resin and the handle part 20 made of paper by reverse screw feeding, and each can be treated as recyclable waste. In general, metal is used for the fixed part of the brush root of a toothbrush, and there are many cases where recycling is difficult, but the paper handle part 20 according to the present embodiment can be easily recycled as recycled paper.

Further, in the present embodiment, the head portion 10 and the handle portion 20 can be connected by screw feeding only by providing the male screw 16a on the side of the head portion 10, and the inner wall of the cylindrical handle portion 20 made of paper is threaded. , the existing paper tube can be used as the handle portion 20 as it is, and the manufacturing cost of the toothbrush 1 can be significantly reduced.

Further, in this embodiment, since the head portion 10 and the handle portion 20 are detachable, when only the handle portion 20 is damaged or when only the used head portion 10 is to be replaced, the handle portion 20 or the handle portion 20 can be replaced. It is possible to replace only one of the head parts 10, which also reduces waste.

Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above embodiments, and various modifications are possible without departing from the gist of the present invention. For example, the shape, size, and material of the members constituting the toothbrush can be changed as appropriate.

Further, in the above embodiment, the case where the present invention is applied to a toothbrush composed of a head portion and a handle portion has been described as an example. It is also applicable to appliances other than toothbrushes, such as razors and combs, as long as they have a handle (handle) connected to a portion.

In the above-described embodiment, the male screw 16a is a right-handed screw that advances further by screw feeding when the screw is turned clockwise, but of course, it may be a left-handed screw. In addition, the male screw 16a is not threaded, but is turned clockwise or counterclockwise to form a helical shape that contacts the inner wall surface of the handle portion 20 and progresses deeper than the friction in the same manner as screw feeding. It may be a protrusion. In this embodiment, the helical projection includes an external thread.

Next, a modified example of this embodiment will be described with reference to FIG. FIG. 4A is a perspective view of the head portion 10' according to this modification, and FIG. 4B is a side view of the head portion 10' according to this modification.

In the above embodiment, the central axis of the neck portion 15 and the central axis of the insertion portion 16 were coaxial, but in this modified example, the central axis of the neck portion 15' and the central axis of the head portion 10' are eccentric. there is Also, in this modified example, a helical projection 16a' is provided instead of the male screw 16a. Therefore, the following description will focus on the configuration different from that of the above-described embodiment.

The head portion 10' includes a hair bundle 11', a neck portion 15', and an insertion portion 16' located on the proximal side of the neck portion 15'. The neck portion 15' is slightly thinner than the insertion portion 16', and the central axis of the neck portion 15' and the central axis of the insertion portion 16' are eccentric, and the side surface of the insertion portion 16' on the eccentric side is the neck. It is located on the same line as the side surface of the portion 15' (see FIG. 4(B)).

By eccentrically aligning the center axis of the neck portion 15' and the center axis of the insertion portion 16' in this manner, the center of gravity of the head portion 10' is deviated from the center axis of the insertion portion 16'. It is possible to easily unify the posture of the head portion 10', and to improve productivity.

Unlike the screw thread 16a according to the above-described embodiment, the helical projection 16a' has a flat top, which increases the contact area with the inner wall surface when connected to the handle portion 20, and is compared to the above-described embodiment. , can be screwed in tightly and firmly, and the insertion portion 16' and the handle portion 20 can be more strongly connected.

Here, regarding the head portion 10' according to this modified example, the outer diameter of the neck portion 15' is φ5 mm, the outer diameter of the flat bar portion 16b of the insertion portion 16' is φ8 mm, and the maximum diameter of the spiral projection 16a' is φ8 mm. It has a diameter of 8.5 mm, and a tapered portion 16c' is provided at the insertion tip of the insertion portion 16'.

Further, the length of the flat bar portion 16b' located at the insertion tip of the insertion portion 16' is 4 mm. there is

By lengthening the flat rod portion 16b' located on the insertion distal end side of the spiral protrusion 16a' in this manner, when inserting the insertion portion 16' into the handle portion 20, the helical portion having a thickness larger than the inner diameter of the handle portion 20 is formed. When the projection 16a' comes into contact with the opening 20a, the distal end (flat rod portion 16b') of the insertion portion 16' is inserted longer into the cylinder, so that the screwing operation of the spiral projection 16a' becomes easier. It can be done stably and reliably.

In order to stably screw the helical projection 16a' into the handle portion 20, the flat rod portion 16b', which is located on the insertion distal end side of the helical projection 16a' and is thinner than the inner diameter of the handle portion 20, is The length is desirably 1 mm or more, more desirably 2 mm or more.

1 toothbrush 10 head portion 11 bristle bundle 15 neck portion 16 insertion portion 16a male screw (spiral protrusion)
16b Flat bar portion 16c Taper portion 20 Handle portion 20a Opening

Claims (6)

A handle-equipped washcloth in which a head part and a handle part serving as a handle are detachably connected,
The handle portion is a thin rod-shaped paper cylinder,
The head portion is a thin rod-shaped insertion portion that is detachably inserted into the cylinder of the handle portion, and rotates around an axis during insertion, thereby contacting the inner wall surface of the handle portion and causing friction. A washcloth with a handle, comprising an insertion part formed with a helical projection configured to advance inward. 2. The hand-held washcloth according to claim 1, wherein said spiral projection is formed at a position below the insertion tip of said insertion portion. 3. The handle-equipped washcloth according to claim 1, wherein the outer diameter of the ridge line of said spiral projection is 0.05 to 0.3 mm larger than the inner diameter of said handle portion. 4. The hand-held toilet article according to any one of claims 1 to 3, wherein said spiral projection is a male screw. 5. The toilet article according to any one of claims 1 to 4, wherein said head portion is made of plastic. 3. The hand-held washcloth according to claim 2, wherein said spiral projection is formed at a position lower than 1 mm from the insertion tip of said insertion portion.

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