JP6751624B2 - Cleaning tool - Google Patents

Description

The present invention relates to a cleaning tool for cleaning the surface to be cleaned with the detergent foamed.

Conventionally, a resin foam (so-called sponge) such as urethane foam is known as a cleaning tool used for cleaning an arbitrary surface to be cleaned such as a kitchen or a bathroom by impregnating a foamable detergent. Be done. Further, in order to improve the foaming of the conventional sponge, a sponge with a net has been proposed in which the sponge is stored in a bag-shaped net.

For example, Patent Document 1 below discloses a scrubbing brush in which a polyurethane sponge is housed in a bag-shaped nylon net having an open upper end. Hereinafter, the type of cleaning tool in which the sponge is stored inside the net may be referred to as the prior art 1.

Further, as a different type of cleaning tool, Patent Document 2 below proposes a cleaner provided with a three-dimensional multi-fold woven fabric in which a first woven fabric and a second woven fabric are connected to a space forming yarn. Hereinafter, a type of cleaning tool having no sponge inside and having two layers of woven fabric on the front and back may be referred to as the prior art 2. Since the prior art 2 does not have a sponge inside, the drainage is better than that of the prior art 1.

Jikkenhei 01-168251 JP-A-2009-247789

In general, it can be said that a cleaning tool having good foaming property has high cleaning property. The lack of foaming property can be compensated by repeatedly adding detergent during the cleaning operation, but in this case, the amount of detergent used increases, which is economically disadvantageous. Therefore, further improvement in foaming property has been required for both the conventional method 1 type cleaning tool having a sponge inside and the conventional technique 2 type cleaning tool having no sponge inside.

The present invention has been made in view of the above-mentioned problems. That is, the present invention provides a cleaning tool having high foaming property.

The cleaning tool of the present invention is a cleaning tool including a first knitted cloth and a second knitted cloth facing each other, and each of the first knitted cloth and the second knitted cloth is in an intersecting direction with respect to the in-plane direction. It has a plurality of convex portions protruding outward and concave portions provided between the adjacent convex portions, and the convex portions provided on the first knitted fabric and the convex portions provided on the second knitted fabric. The convex portion faces each other, and the concave portion provided in the first knitted fabric and the concave portion provided in the second knitted fabric face each other, respectively. Is composed of a first yarn having a predetermined bending elasticity and a second yarn having a bending elasticity smaller than that of the first yarn, and the first yarn is arranged in the convex portion more than the concave portion. It is characterized in that the first yarn is arranged in the concave portion more than the convex portion .

The cleaning tool of the present invention having the above configuration can retain air and / or moisture in the space by forming a significant space between the first and second knitted fabrics facing each other. is there. Therefore, in the cleaning tool of the present invention to which the detergent is added, good foaming is realized by mixing the detergent with the air and / or moisture.

It is a schematic perspective view which shows an example of the cleaning tool which concerns on 1st Embodiment of this invention. FIG. 2 is a sectional view taken along line II-II of the cleaning tool shown in FIG. It is a partial top view of the first knitted cloth in the cleaning tool shown in FIG. It is a partial top view of the modification of the first knitted cloth in the cleaning tool shown in FIG. It is explanatory drawing explaining the method of measuring the elasticity of a yarn. It is sectional drawing of the cleaning tool which concerns on 2nd Embodiment of this invention. It is sectional drawing of the cleaning tool which concerns on 3rd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate.
In the present invention or the present specification, a knitted fabric is a fabric composed of stitches repeatedly formed by continuously forming a loop with a thread and hooking another thread or a continuation of the same thread on the loop. .. Further, the direction in which loops are continuously formed in one direction is called the horizontal direction, the stitches continuous in the horizontal direction are called the course, and the direction in which the courses are arranged (that is, the direction substantially perpendicular to the horizontal direction) is called the knitting direction. ..
Further, in the present invention or the present specification, the in-plane direction of the knitted fabric is the plane when the knitted fabric extending in a substantially flat shape is regarded as a flat surface, ignoring the unevenness formed on the surface of the knitted fabric. Means the extending direction of. Further, in the cleaning tool, the direction in which the first knitted cloth faces the second knitted cloth is called the inward direction, the direction opposite to the direction facing the second knitted cloth is called the outer direction, and the second knitted cloth is the first knitted cloth. The direction facing the cloth is called the inward direction, and the direction opposite to the direction facing the first knitted cloth is called the outward direction.
In the present invention, the convex portion formed on the knitted fabric means a portion protruding outward of the knitted fabric, and the concave portion is a portion formed between adjacent convex portions and relatively concave with respect to the convex portion. Means.

<First embodiment>
Hereinafter, the first embodiment of the cleaning tool of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a schematic perspective view showing an example of a cleaning tool 100 according to the first embodiment of the present invention. In FIG. 1, the first yarn 60 and the second yarn 62 (see FIG. 2) constituting the first knitted fabric 20 and the second knitted fabric 30 are not shown. FIG. 2 is a sectional view taken along line II-II of the cleaning tool 100 shown in FIG. The II-II cross-sectional view shows a cross section when the first knitted fabric 20 and the second knitted fabric 30 are cut in a direction orthogonal to the knitting direction. In FIG. 2, the broken line indicates the outer shape of the cleaning tool 100 composed of the first knitted cloth 20 and the second knitted cloth 30. FIG. 3 is a partial top view of the first knitted cloth 20 in the cleaning tool 100 shown in FIG. FIG. 4 is a partial top view of a modified example of the first knitted cloth 20 in the cleaning tool 100 shown in FIG. FIG. 5 is an explanatory diagram illustrating a method of measuring the elasticity of the first yarn 60.

First, the outline of the cleaning tool 10 of the present embodiment will be described.
The cleaning tool 100 includes a first knitted cloth 20 and a second knitted cloth 30 facing each other. As shown in FIG. 2, each of the first knitted fabric 20 and the second knitted fabric 30 is adjacent to a plurality of convex portions 40 projecting in the intersecting direction and the outward direction (outer directions C1 and C2) with respect to the in-plane direction. It has a concave portion 50 provided between the convex portions 40. That is, the first knitted fabric 20 has a convex portion 40 projecting in the outward direction C1, and the second knitted fabric 30 has a convex portion 40 projecting in the outward direction C2.
The cleaning tool 100 is provided at a position where the convex portion 40 provided on the first knitted cloth 20 and the convex portion 40 provided on the second knitted cloth 30 face each other, and is provided on the first knitted cloth 20. The recess 50 provided and the recess 50 provided in the second knitted fabric 30 are provided at positions facing each other.
In the present invention, the concave portion includes a concave portion intentionally formed on the knitted fabric surface and a concave portion formed by making the convex portions relatively concave from each other by adjoining the convex portions. Further, in the present invention, the convex portion includes a convex portion intentionally formed on the knitted fabric surface and a convex portion formed by making the concave portions relatively convex by adjoining the concave portions. ..

According to the cleaning tool 100 having the above configuration, as can be easily understood from FIG. 2, a significant space 70 is formed between the first knitted cloth 20 and the second knitted cloth 30. Here, the significant space portion 70 is a knitted fabric as compared with the case where two knitted fabrics woven substantially flat without unevenness are opposed to each other to the extent that they are substantially in contact with each other to form a bag-shaped knitted object. It means that a space of significant volume is formed between them. In the cleaning tool 100, when the first knitted cloth 20 and the second knitted cloth 30 facing each other come into close contact with each other, the recesses 50 facing each other come into contact with each other, so that further approach is restricted. Therefore, the distance between the convex portions 40 facing each other is appropriately maintained, and the space portion 70 is well maintained.

The fact that the convex portion 40 provided on the first knitted fabric 20 and the convex portion 40 provided on the second knitted fabric 30 face each other means that the apex of the convex portion 40 on one side faces the apex of the convex portion 40 as shown in FIG. It is preferable that the broken line t1 connecting the vertices of the convex portion 40 intersects substantially perpendicular to the in-plane direction. However, the present invention is not limited to this, and the broken line t1 is 90 with respect to the in-plane direction except that the broken line t2 connecting the apex of the convex portion 40 and the apex of the concave portion 50 intersects substantially perpendicular to the in-plane direction. It also includes aspects that intersect at angles other than degrees. From the viewpoint of sufficiently securing the space 70, it is preferable that the broken line t1 observed in the cross section intersects the in-plane direction at an angle of 60 degrees or more and 120 degrees or less, and 80 degrees or more and 100 degrees or less. It is more preferable to intersect at the angle of. It is particularly preferable to intersect at 85 degrees or more and 95 degrees or less.

As described above, when the cleaning tool 100 having the space portion 70 foams the added detergent, good foaming is realized by mixing the air and / or water contained in the space 70 with the detergent. Further, since the cleaning tool 100 includes the first knitted fabric 20 and the second knitted fabric 30 which face each other, the cleaning tool 100 is excellent in elasticity and elasticity as compared with the woven fabric and the like, and the cleaning workability is good. When the cleaning tool 100 is being cleaned, the space 70 may be temporarily crushed by being grasped by the operator. However, since the cleaning tool 100 is made of knitted fabric and has excellent elasticity, the space 70 can be quickly regenerated by being released from the gripping force. As described above, the cleaning tool 100 has good foaming and is also excellent in elasticity and elasticity. Therefore, the cleaning tool 100 can be used not only for cleaning around water in the kitchen or bathroom, and for cleaning items such as tableware, but also for washing the face or the body.

Next, the cleaning tool 100 of the present embodiment will be described in detail.
As shown in FIG. 1, the cleaning tool 100 in the present embodiment is substantially composed of the first knitted cloth 20 and the second knitted cloth 30. In the present embodiment, the first knitted fabric 20 and the second knitted fabric 30 have substantially the same shape and are overlapped with each other in a top view and face each other. The first knitted cloth 20 and the second knitted cloth 30 in the present embodiment have a bag shape in which a part of the outer edge is opened. As an example, by creating a tubular knitted fabric and crushing it to form the front and back surfaces facing each other, it is possible to form the cleaning portion 100 including the first knitted cloth 20 and the second knitted cloth 30. More specifically, the first knitted fabric 20 and the second knitted fabric 30 are substantially quadrilateral as shown in FIG. 1, and one end edge orthogonal to the knitting direction A has an opening 12 and is open. The other edge is closed by a closing portion 14 to which the first knitted fabric 20 and the second knitted fabric 30 are joined. As a modified example (not shown), the closing portion 14 may be provided at one end instead of the opening 12. The first knitted fabric 20 and the second knitted fabric 30 in the present embodiment are continuously knitted by orbiting a course which is a stitch orthogonal to the knitting direction A. Therefore, the other two outer edges that intersect the opening 12 and the closing 14 are rings 18 and 18.

As a modification omitted from the illustration, in the present invention, the first knitted fabric 20 and the second knitted fabric 30 are individually prepared and aligned so that the convex portions 40 and the concave portions 50 face each other. Includes cleaning tools made by joining arbitrary parts. As another modification, in the present invention, the cleaning tool 100 has another configuration in addition to the first knitted cloth 20 and the second knitted cloth 30, or the first knitted cloth 20 and the second knitted cloth 30. 30 includes a mode in which all or a part of any one of them has a different shape and is opposed to each other by overlapping a part of the other in a top view.

In the present specification, the term "joining" includes a wide range of means that can be fixed in a state where the first knitted fabric 20 and the second knitted fabric 30 are in contact with each other so as not to be separated from each other. It may be bonded by an adhesive or heat fusion.

The cleaning tool 100 in the present embodiment holds the first knitted cloth 20 and the second knitted cloth 30 not only at the edge edges of the first knitted cloth 20 and the second knitted cloth 30 but also at any place in the plane. A joining portion 16 to be joined may be provided. By providing the joint portion 16, the shape stability of the cleaning tool 100 formed in a tubular shape or a bag shape is improved, and the convex portion 40 in the first knitted cloth 20 and the convex portion in the second knitted cloth 30 facing each other are improved. The facing state of 40 can be maintained well. In the present embodiment, a plurality of linear joints 16 are provided at locations other than the edge of the cleaning tool 100. For example, as shown in FIG. 1, the cleaning tool 100 can be provided with a plurality of linear joints 16 that are continuous in the lateral direction in an arrangement at predetermined intervals.
As a preferred example, as shown in FIG. 2, it is preferable to join the recesses 50 and 50 facing each other between the first knitted fabric 20 and the second knitted fabric 30 to form the joint portion 16. As a result, the first knitted fabric 20 and the second knitted fabric 30 can be joined without deforming the shape of the convex portion. In the following description, the first knitted fabric 20 and the second knitted fabric 30 may be collectively referred to as the knitted fabric in the present embodiment.

The means for producing the knitted fabric in the present embodiment is not limited, and includes knitted fabrics produced by either mechanical knitting or hand knitting. For example, the knitting of the present embodiment can be knitted with a flat knitting machine. By continuously knitting the first knitting cloth 20 and the second knitting cloth 30 with a flat knitting machine, a bag-shaped (cylindrical) cleaning tool 100 can be easily produced. Further, the knitting method of the knitted fabric of the present embodiment is not particularly limited, and any generally known knitting method such as flat knitting, rubber knitting, pearl knitting, or knitting may be adopted. The thread constituting the knitted fabric in the present embodiment is not particularly limited as long as it is a thread-like body capable of forming the knitted fabric, and the material, thickness and the like can be appropriately selected depending on the use of the cleaning tool 100.

As described above, the knitted fabric in the present embodiment is provided with the convex portion 40 and the concave portion 50. The shape and arrangement of the convex portion 40 and the concave portion 50 are not particularly limited, but in the present embodiment, the one convex portion 40 and the other convex portions 40 adjacent to the one convex portion 40 are continuous in the lateral direction. There is. That is, as shown in FIG. 1, the convex apex 44 is continuous in the lateral direction on the surface of the first knitted fabric 20. In the present embodiment, since a plurality of convex portions 40 are provided, a plurality of convex portion vertices 44 continuous in the lateral direction exist in the knitting direction A. Further, although not shown in FIG. 1, the same applies to the convex portion 40 provided on the second knitted fabric 30 in the present embodiment. As can be understood from FIG. 2, when the cleaning tool 100 in the present embodiment is observed from the plane direction, the convex portion apex 44 on the surface of the first knitted fabric 20 and the convex portion on the surface of the second knitted fabric 30 (not shown). It substantially overlaps with the apex 44. Further, although not shown in FIG. 1, a groove-shaped recess 50 that is continuous in the lateral direction is provided between the adjacent convex portion vertices 44.

According to the cleaning tool 100 provided with the convex portion 40 and the concave portion 50 continuous along the stitch (course) in the lateral direction, the space portion 70 is also continuously formed in the lateral direction, so that the volume of the space portion 70 is formed. Is sufficiently secured, and the foaming property is good.

Each of the first knitted fabric 20 and the second knitted fabric 30 in the present embodiment is configured to include a first yarn 60 having a predetermined bending elasticity and a second yarn 62 having a bending elasticity smaller than that of the first yarn 60. There is. In FIG. 2, the cross section of the first thread 60 is shown by a black circle, and the cross section of the second thread 62 is shown by a white circle. In the present embodiment, the first yarn 60 is arranged in the concave portion 50 more than the convex portion 40. More specifically, in the present embodiment, one or more first threads 60 are arranged in the concave portion 50, and the first thread 60 is not arranged in the convex portion 40.
In other words, the first yarn 60 having a relatively large bending elasticity is provided by alternately providing a region where the first yarn 60 is concentrated (second region 52) and a region where the second yarn 62 is concentrated (first region 42). Due to the influence of the tension of the thread, the second region 52 rises inward and a recess 50 is formed. As a result, the first region 42 between the second regions 52 projects relatively outward to form a convex portion 40.
As a modification of the present embodiment, the present invention includes an embodiment in which the first yarn 60 is arranged more in the convex portion 40 than in the concave portion 50.

The recess 50 formed by the tension of the first thread 60 having a relatively large bending elasticity is maintained in a concave shape even by repeated use of the cleaning tool 100 as long as the bending elasticity of the first thread 60 is not impaired. Will be done. As a result, the space 70 formed between the convex portions 40 formed between the adjacent concave portions 50 is well maintained, so that the foaming property of the cleaning tool 100 is also maintained. Further, in the present embodiment in which the first yarn 60 and the second yarn 62 are used as described above, only the yarn to be used is selected in consideration of bending elasticity, and no special convex portion forming step or concave portion forming step is carried out. In both cases, the convex portion 40 and the concave portion 50 can be formed by a general knitting method, so that the structure is easy to manufacture.
When the first thread 60 is arranged in the concave portion 50 more than the convex portion 40 as in the present embodiment, the second thread 62 having less elasticity than the first thread 60 is likely to come into contact with the object to be cleaned. Therefore, the frictional force against the object to be cleaned can be suppressed, and the object to be cleaned can be prevented from being damaged during cleaning.
On the other hand, in the modified example in which the first thread 60 is arranged more in the convex portion 40 than in the concave portion 50, the first thread 60 having a large elastic force easily comes into contact with the object to be cleaned, so that the first thread 60 adheres to the object to be cleaned. Highly effective in scraping kimono (dirt). Whether the first thread 60 is concentrated on the convex portion 40 or the concave portion 50 can be appropriately determined depending on the use of the cleaning tool.

An example of the arrangement of the first thread 60 and the second thread 62 will be described with reference to FIG.
As shown in FIG. 3, the cleaning tool 100 in the present embodiment includes a course in which a plurality of first threads 60 and second threads 62 are taken. More specifically, the recess 50 in which the first thread 60 is arranged more than the convex portion 40 is provided with a course in which a plurality of the first thread 60 and the second thread 62 are taken.
That is, the first knitted fabric 20 in the present embodiment has a second region 52 having a plurality of rows (four rows in FIG. 3) of two yarns 60 and 62 in the knitting direction A. The first region 42 having a plurality of rows (two rows in FIG. 3) of courses composed of the second yarn 62 is alternately arranged. As described above, the second region 52 in which the first yarn 60 is arranged in a relatively large amount is more affected by the bending elasticity of the yarn than the first region 42 in which the first yarn 60 is arranged in a relatively small amount. As a result, it is recessed inward to form a recess 50. The first region 42 forms a convex portion 40 by protruding relatively outward due to the inward dent of the second region 52.
Further, as another aspect (not shown), the present invention comprises a mode in which a plurality of first yarns 60 and second yarns 62 are taken in a recess 50 in which more first yarns 60 are arranged than in a convex portion 40. Includes.
In the present embodiment, the first region 42 in which the first yarn 60 is arranged in a relatively small number means that the first yarn 60 having a smaller number than the first yarn 60 arranged in the second region 52 is arranged. It includes both an aspect and an aspect in which the first yarn 60 is not arranged at all. Although FIG. 3 shows an example in which the second region 52 has two threads including the first thread 60, it can be appropriately changed to three threads or more including at least one first thread 60. By forming the second region 52 with a plurality of yarns including the first yarn 60 and the second yarn 62, the second region 52 having moderate flexibility while utilizing the bending elasticity of the first yarn 60 is formed. It is possible to provide a cleaning tool 100 having a good texture.

A modified example of this embodiment will be described with reference to FIG.
The first knitted fabric 20, which is a modified example shown in FIG. 4, has a second region 52 having a plurality of rows of courses consisting of only the first yarn 60 (three rows in FIG. 4) and a plurality of courses consisting of only the second yarn 62. The first region 42 provided with rows (two rows in FIG. 4) is alternately arranged. In this way, one or more first threads 60 are used for each course constituting the second region 52, and one or more second threads 62 are used for each course constituting the first region 42. You may use it. In such a modified example, since the difference in thread tension between the second region 52 and the first region 42 is remarkable, it is easy to form the convex portion 40 and the concave portion 50 having a clearly protruding state, and the space portion 70 having a large volume is formed. Easy to form.
Although the first knitted fabric 20 has been described above with reference to FIGS. 3 and 4, such description also applies to the second knitted fabric 30.

In the present embodiment, the first thread 60 may be a thread having a bending elasticity relatively larger than that of the second thread 62, and the thickness and material of the first thread 60 are not particularly limited. Similarly, the second thread 62 may be a thread having a bending elasticity relatively smaller than that of the first thread 60, and the thickness and material of the second thread 62 are not particularly limited. The second yarn 62 is a general term for yarns having a smaller bending elasticity than the first yarn 60, and the second yarn 62 constituting the knitted fabric in the present embodiment may be one type. However, there may be two or more types having different bending elasticity. For example, when three types of threads having different bending elasticity are used in the cleaning tool 100, the thread having the largest bending elasticity may be the first thread 60, and the other two types of threads may be treated as the second thread 62. it can.

The yarns used as the first yarn 60 and the second yarn 62 are appropriately selected from the yarns that can form a knit. For example, examples of the above-mentioned yarn include resin yarns made of cotton yarn, polyester, nylon, polyolefin, etc., metal yarns made of copper, iron, stainless steel, aluminum, etc., and the like. Further, the above-mentioned yarn may be either a monofilament yarn which is a single fiber or a multifilament yarn produced by twisting a large number of fibers. The first thread 60 and the second thread 62 may be selected from threads made of the same kind of material or may be selected from threads made of different materials as long as the magnitude of the bending elasticity is shown.

From the viewpoint of selecting a yarn having a large bending elasticity and reliably forming the convex portion 40, a slit yarn having an aspect ratio of 1: 1.5 or more and 1: 100 or less in the cross section is used as the first yarn 60. It is preferable to select. The first yarn 60 may be selected so that the bending angle measured by the following bending elasticity measuring method is 45 degrees or less. For example, the first yarn 60 is the slit yarn, and the bending angle measured by the following bending elasticity measuring method is 45 degrees or less.
As shown in FIG. 5, the elasticity measuring method is such that one end 601 to 250 mm of the thread (first thread 60) is a fulcrum end 603, and the fulcrum end 603 to the other end 602 is a horizontal plane 610. It is arranged and supported by an arbitrary support portion (not shown), and the fulcrum end portion 603 to one end portion 601 is hung by its own weight, and the fulcrum end portion 603 to 10 mm of the hanging thread (first thread 60) is 604. This is a method of measuring the angle θ formed by the line 605 connecting the fulcrum end portion 603 and the extension surface 614 of the horizontal plane 610.
In the elasticity measuring method, a measuring table 620 including a horizontal plane 610 and a vertical plane 612 extending vertically downward from the edge of the horizontal plane 610 is used. The fulcrum end portion 603 of the thread used for the measurement is located at the end edge of the horizontal plane 610. When the bending elasticity of the yarn is substantially zero, the fulcrum end portion 603 to the end portion 601 hang down along the vertical surface 612, so that the bending angle θ is 90 degrees.

The slit thread can be manufactured by molding a resin film having a predetermined thickness (for example, 12 μm or more and 100 μm or less) and cutting the resin film to a predetermined width dimension (for example, 0.15 mm or more and 1 mm or less). it can. As the resin used for molding the resin film, for example, polyolefin, polyester, nylon and the like are preferably selected, and polyethylene terephthalate is particularly preferable among polyesters, but the resin is not limited thereto.

It is preferable that the second yarn 62 used together with the first yarn 60, which is the slit yarn, has a bending elasticity of more than 45 degrees and 90 degrees or less. This is because the cleaning tool 100 can form a clear uneven shape.

The cleaning tool 100 of the present embodiment described above includes a first knitted cloth 20 and a second knitted cloth 30 facing each other, and the first knitted cloth 20 and the second knitted cloth 30 each have a predetermined bending elasticity. A first yarn 60 and a second yarn 62 having a bending elasticity smaller than that of the first yarn 60 are included.
The cleaning tool 100 has a second region 52 in which the first yarn 60 is continuously or intermittently arranged in the knitting direction A, and the first yarn 60 in each of the first knitted cloth 20 and the second knitted cloth 30. A first region 42 in which the second yarn 62 is continuously arranged in the knitting direction A is repeatedly provided. Here, the second region 52 of the first knitted fabric 20 and the second region 52 of the second knitted fabric 30 face each other, and the first region 42 of the first knitted fabric 20 and the second knitted fabric The first region 42 of 30 faces each other.
As described above, the cleaning tool 100 uses yarns having different bending elasticity in each of the first knitting cloth 20 and the second knitting cloth 30, and is a region (second region) in which yarns having relatively strong bending elasticity are intensively arranged. By repeatedly arranging the 52) and the region (first region 42) that does not have the yarn having strong bending elasticity, unevenness (convex portion 40, concave portion 50) can be formed on the surface of the knitted fabric. By facing the first region 42 of the first knitted fabric 20 and the first region 42 of the second knitted fabric 30, a space portion 70 is formed between the two first regions 42, which is good as described above. It is possible to realize a good foaming.

Here, in each of the first knitted fabric 20 and the second knitted fabric 30, the total number of yarns (first yarn 60, second yarn 62) used in all the first region 20 and all the second region 30 is the total number. It is preferable that the ratio of the total number of the second yarns 62 used in the two regions 30 is 10% or more and 70% or less, and the first region 42 and the second region 52 are each composed of two or more courses. This is because the formation of the space 70 becomes remarkable and the foaming effect is excellent.
By setting the ratio of the total number of the second threads 62 described above to 10% or more, it is easy to form the sharp convex portions 40 and the concave portions 50, and the foaming property of the cleaning tool 100 can be sufficiently improved. Further, by setting the ratio of the total number of the second yarns 62 to 70% or less, it is possible to provide the cleaning tool 100 having good foaming property and overall volume of the knitted fabric and good workability.

In the present embodiment, one convex portion 40 and one concave portion 50 are provided continuously in the lateral direction, but the present invention is not limited to this. For example, in the present invention, a plurality of convex portions 40 provided on the first knitted fabric 20 and the second knitted fabric 30 locally bulge outward on the surfaces of the first knitted fabric 20 and the second knitted fabric 30. The concave portion 50 provided between the adjacent mountain-shaped convex portions 40 is in the shape of a bowl, which is locally recessed inward on the surfaces of the first knitted fabric 20 and the second knitted fabric 30. ..
Further, the method of forming the convex portion 40 and the concave portion 50 in the knitting in the present embodiment is not particularly limited, and the convex portion 40 and / or the concave portion is used as a pattern of the knit using a plurality of yarns having the same bending elasticity or one kind of yarn. 50 may be woven.

<Second embodiment>
The second embodiment of the cleaning tool of the present invention will be described below with reference to FIG.
FIG. 6 is a schematic cross-sectional view showing an example of the cleaning tool 110 according to the second embodiment of the present invention. FIG. 6 shows a cross section when cut at the same angle as the II-II cross section of FIG. 2, and the cross section of the first thread 60 and the second thread 62 is not shown.

In the cleaning tool 110, a porous body (sponge 200) is arranged between the first knitted cloth 20 and the second knitted cloth 30. The cleaning tool 110 includes a sponge 200, does not have a joint portion for joining the first knitting cloth 20 and the second knitting cloth 30 to the cleaning tool 100, and has a closing portion 14 instead of the opening portion 12. It is configured in the same manner as the cleaning tool 100 described above, except that it is provided.

By providing the cleaning tool 110 with a porous body (sponge 200), the cleaning tool 110 is superior in foaming property to a cleaning tool composed of a knitted cloth, a net, or the like. Further, the cleaning tool 110 is of the type of the prior art 1 having a sponge inside because a space 70 is formed between the convex portions 40 and the convex portions 40 facing each other with the porous body (sponge 200) interposed therebetween. Foaming is improved compared to the cleaning tool. The porous body is a solid having a plurality of pores capable of containing detergent and water and having appropriate elasticity, and is, for example, a resin foam (so-called sponge) such as urethane foam, a non-woven fabric, or a loofah sponge. Examples include fiber bodies of plants such as.

<Third embodiment>
The third embodiment of the cleaning tool of the present invention will be described below with reference to FIG. 7.
FIG. 7 is a schematic cross-sectional view showing an example of the cleaning tool 120 according to the third embodiment of the present invention. FIG. 7 shows a cross section cut at an angle similar to the II-II cross section of FIG.

The cleaning tool 120 is configured by alternately arranging a second region 52 including one course including the first thread 60 and a first region 42 including one course including the second thread 62. In this way, the first knitted fabric in which the first yarn 60 (or a course in which a plurality of first yarn 60 and the second yarn 62 are taken) and the second yarn 62 are alternately arranged one course at a time. It is also possible to achieve the desired task of the present invention by using the cloth 20 and the second knitted cloth 30. A plurality of small spaces 70 are formed inside the cleaning tool 120, and the air and / or water contained therein is mixed with the detergent, so that good foaming can be realized.
For example, by using a slit yarn having a large bending elasticity as the first yarn 60 and using a multifilament yarn having good flexibility and a small bending elasticity as the second yarn 62, the first knitted fabric 20 and the second knitted fabric 30 can be formed. Significant protrusions 40 and recesses 50 are likely to be formed.

As described above, the cleaning tool 120 has the second region 52 and the first region 42 each composed of one course, and both end edges in the direction orthogonal to the knitting direction are provided with closed portions 14. It is configured in the same manner as the cleaning tool 100 described above, except that it does not have the joint portion 16.

In each of the embodiments described above, the first thread is arranged in the concave portion more than the convex portion as an example, but the present invention is not limited to this, and the first thread is convex more than the concave portion. Includes aspects arranged in many parts. For example, when a tubular knitted fabric is formed by combining the yarns shown in FIG. 3 with a flat knitting machine, the first yarn is arranged in the concave portion more than the convex portion. However, by reversing the inside and outside of the tubular knitted fabric, it is possible to realize an embodiment in which more first yarns are arranged in the convex portion than in the concave portion.

(Example 1)
A polyethylene terephthalate slit yarn (bending angle 40 degrees) having a thickness of 38 μm and a width dimension of 0.70 mm was selected as the first yarn, and a polyester multifilament yarn (bending angle 60 degrees, 100d) was selected as the second yarn. .. Similar to the pattern shown in FIG. 3, in the knitting direction, a course in which two first and second yarns are taken is knitted in four courses to form a second region (recess), and then two courses are knitted only with the second yarn. Then, the formation of the first region (convex portion) was repeated. As a whole, a tubular knitted fabric is knitted with dimensions of 100 mm in the circumferential direction (horizontal direction) and 100 mm in the knitting direction, and two knitted fabrics having a length of 100 mm and a width of 50 mm are overlapped by closing the openings at both ends. It was used as a cleaning tool.

(Comparative Example 1)
A cleaning tool was prepared in the same manner as in Example 1 except that only the course in which the first thread and the second thread were taken was taken, and used as Comparative Example 1.
(Comparative Example 2)
Example 1 except that a polyethylene terephthalate multifilament yarn (bending angle 60 degrees, 100d) and a polyester multifilament yarn (bending angle 50 degrees, 150d) are used and only two courses are taken. A cleaning tool was prepared in the same manner as in the above, and used as Comparative Example 2.

(Example 2)
Except for knitting a tubular knitted fabric with dimensions of 160 mm in the circumferential direction (horizontal direction) and 150 mm in the knitting direction as a whole, storing urethane sponge inside and closing both ends to make a bag containing sponge with a length of 150 mm and a width of 80 mm. Made a cleaning tool in the same manner as in Example 1 and used as Example 2.

(Comparative example 3)
Except for knitting a tubular knitted fabric with dimensions of 160 mm in the circumferential direction (horizontal direction) and 150 mm in the knitting direction as a whole, storing urethane sponge inside and closing both ends to make a bag containing sponge with a length of 150 mm and a width of 80 mm. Made a cleaning tool in the same manner as in Comparative Example 1 and used as Comparative Example 3.

Using the cleaning tools of Examples 1 and 2 and Comparative Examples 1 to 3 prepared as described above, the foaming property was evaluated as follows. The evaluation results are shown in Table 1.
(Evaluation of foaming property)

Each cleaning tool was sufficiently immersed in water and impregnated with 5 cc of a commercially available dishwashing detergent, and compression and release were repeated, and the number of times until foam was generated was evaluated as follows.
⊚: 5 times or less ○: 6 to 10 times ×: 11 times or more

In Examples 1 and 2, remarkable unevenness was confirmed on the surface of the cleaning tool, and when the cross section was observed in a state of being wet with water, a convex portion formed on one side surface (corresponding to the first knitted cloth). And the convex portion formed on the other side surface (corresponding to the second knitted fabric) face each other, and it was confirmed that a significant gap was formed between the convex portions. Similarly, the recess formed on one side surface (corresponding to the first knitted fabric) and the recess formed on the other side surface (corresponding to the second knitted fabric) also faced each other.
In Comparative Examples 1 to 3, the surface of the cleaning tool had no remarkable unevenness and was substantially flat, and when the cross section was observed in a state of being wet with water, one side surface and the other side surface were close to each other. It did not have a conspicuous space.

As shown in Table 1, Example 1 did not have a sponge inside, but had good foaming properties. On the other hand, in Comparative Examples 1 and 2, it took a considerable number of times until bubbles were generated, and the foaming property was poor.
Further, in Example 2 in which the sponge was housed inside, the foaming property was very good. On the other hand, Comparative Example 3 in which the sponge was housed showed good foaming property, but was about the same as in Example 1.

The above embodiment includes the following technical ideas.
(1) A cleaning tool including a first knitted cloth and a second knitted cloth facing each other.
Each of the first knitted fabric and the second knitted fabric has a plurality of convex portions protruding in an intersecting direction and an outward direction with respect to the in-plane direction, and concave portions provided between the adjacent convex portions.
The convex portion provided on the first knitted fabric and the convex portion provided on the second knitted fabric face each other, and the concave portion provided on the first knitted fabric and the concave portion provided on the second knitted fabric are provided. A cleaning tool characterized in that the recesses are opposed to each other.
(2) The cleaning tool according to (1) above, wherein the one convex portion and the other convex portion adjacent to the one convex portion are continuous in the lateral direction.
(3) Each of the first knitted fabric and the second knitted fabric is composed of a first yarn having a predetermined bending elasticity and a second yarn having a bending elasticity smaller than that of the first yarn.
The first thread is arranged in the convex portion more than the concave portion, or the first thread is arranged in the concave portion more than the convex portion according to the above (1) or (2). Cleaning tool.
(4) The cleaning tool according to (3) above, wherein the first yarn is a slit yarn having an aspect ratio of 1: 1.5 or more and 1: 100 or less in the cross section.
(5) The cleaning tool according to (3) or (4) above, wherein the first yarn has a bending angle of 45 degrees or less measured by the following bending elasticity measuring method.
In the elasticity measuring method, a portion 250 mm from one end of the thread is set as a fulcrum end, and the fulcrum end to the other end is arranged and supported on a horizontal plane, and the fulcrum end to the one end is supported. A method of measuring the angle θ formed by a line connecting the fulcrum end of the drooping thread, a point 10 mm from the fulcrum end, and an extension surface from the horizontal plane by hanging up to the portion by its own weight. is there.
(6) The first thread and the second thread are formed in the convex portion in which the first thread is arranged more than the concave portion or in the concave portion in which the first thread is arranged more than the convex portion. The cleaning tool according to any one of (1) to (5) above, comprising a course in which a plurality of threads are taken.
(7) A cleaning tool provided with a first knitted cloth and a second knitted cloth facing each other.
Each of the first knitted fabric and the second knitted fabric includes a first yarn having a predetermined bending elasticity and a second yarn having a bending elasticity smaller than that of the first yarn.
In each of the first knitted fabric and the second knitted fabric, the first region which does not have the first yarn and the second yarn is continuously arranged in the knitting direction and the first yarn are continuous in the knitting direction. The second area, which is arranged intentionally or intermittently, is repeatedly provided,
The first region of the first knitted fabric and the first region of the second knitted fabric face each other, and
A cleaning tool characterized in that the second region of the first knitted fabric and the second region of the second knitted fabric face each other.
(8) In each of the first knitted cloth and the second knitted cloth
The ratio of the total number of second yarns used in all the second regions to the total number of yarns used in all the first region and all the second regions is 10% or more and 70% or less, and the first region and the said The cleaning tool according to (7) above, wherein the second area is composed of two or more courses.
(9) The cleaning tool according to any one of (1) to (8) above, wherein a porous body is arranged between the first knitted cloth and the second knitted cloth.

12 Opening 14 Closed 16 Joint 18 Wheel 20 First knitted cloth 30 Second knitted cloth 40 Convex 42 First area 44 Convex apex 50 Concave 52 Second area 60 First thread 62 Second thread 70 Space part 100 , 110, 120 Cleaning tool 200 Sponge 200, 602 End 603 Appoint end 604 Point 605 Line 610 Horizontal surface 612 Vertical surface 614 Extension surface 620 Measuring table A Knitting direction C1 Outer direction C2 Inward direction a, b Protrusion direction t1, t2 Broken line

Claims (6)

A cleaning tool provided with a first knitted cloth and a second knitted cloth facing each other.
Each of the first knitted fabric and the second knitted fabric has a plurality of convex portions protruding in an intersecting direction and an outward direction with respect to the in-plane direction, and concave portions provided between the adjacent convex portions.
The convex portion provided on the first knitted fabric and the convex portion provided on the second knitted fabric face each other, and the concave portion provided on the first knitted fabric and the concave portion provided on the second knitted fabric are provided. It was and the recess and faces,
Each of the first knitted fabric and the second knitted fabric is composed of a first yarn having a predetermined bending elasticity and a second yarn having a bending elasticity smaller than that of the first yarn.
A cleaning tool characterized in that the first thread is arranged in the convex portion more than the concave portion, or the first thread is arranged in the concave portion more than the convex portion . The cleaning tool according to claim 1, wherein the one convex portion and the other convex portion adjacent to the one convex portion are continuous in the lateral direction. The cleaning tool according to claim 1 or 2 , wherein the first yarn is a slit yarn having an aspect ratio of 1: 1.5 or more and 1: 100 or less in the cross section. The cleaning tool according to any one of claims 1 to 3, wherein the first yarn has a bending angle of 45 degrees or less measured by the following bending elasticity measuring method.
In the elasticity measuring method, a portion 250 mm from one end of the thread is set as a fulcrum end, and the fulcrum end to the other end is arranged and supported on a horizontal plane, and the fulcrum end to the one end is supported. A method of measuring the angle θ formed by a line connecting the fulcrum end of the drooping thread, a point 10 mm from the fulcrum end, and an extension surface from the horizontal plane by hanging up to the portion by its own weight. is there. A plurality of the first thread and the second thread are provided in the convex portion in which the first thread is arranged more than the concave portion or in the concave portion in which the first thread is arranged more than the convex portion. The cleaning tool according to any one of claims 1 to 4 , comprising a course taken. The cleaning tool according to any one of claims 1 to 5 , wherein a porous body is arranged between the first knitted cloth and the second knitted cloth.

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