JP5147909B2 - Cleaning body and cleaning tool - Google Patents

Description

  The present invention relates to a cleaning tool, and more particularly to a construction technique of a cleaning tool including a sheet-like cleaning body for cleaning a surface to be cleaned such as indoors or inside a vehicle.

  Conventionally, various cleaning tools including a sheet-like cleaning body that performs wiping and cleaning of an object to be cleaned have been proposed. For example, Patent Literature 1 below discloses a cleaning tool having a cleaning cloth and a handle that detachably holds the cleaning cloth inserted in a storage area provided in the cleaning cloth. This cleaning tool has a possibility of wiping and cleaning the surface to be cleaned by using a cleaning cloth held through a handle, but when designing this type of cleaning tool including a cleaning body and the cleaning body, There is a demand for a configuration that is effective in improving the cleaning effect.

Japanese Patent Laid-Open No. 9-154791

  Then, this invention is made | formed in view of this point, and makes it a subject to provide the technique effective in aiming at the cleaning effect improvement in the sheet-like cleaning body which performs the wiping cleaning of the cleaning object.

  In order to achieve the above object, the invention described in each claim is configured. The invention described in each of the claims includes a surface to be cleaned indoors or outdoors (floor surface, wall surface, ceiling surface, outer wall surface, furniture surface, clothing, curtain, bedding, home appliances, etc. of a detached house, condominium, building, factory, vehicle, etc. And the like, and a cleaning tool for cleaning a surface to be cleaned in each component part of the human body. These various surfaces to be cleaned may be configured as a flat surface, or may be configured as a curved surface, an uneven surface, or a step surface.

  The cleaning body according to the present invention includes at least a fiber assembly, a non-woven fabric, a first weld joint, and a plurality of second weld joints.

  The fiber assembly of the present invention is configured by collecting a plurality of fibers extending in a predetermined direction. This fiber assembly preferably has a planar structure with a predetermined plane or curved surface, and is configured as a three-dimensional shape having a certain thickness or a thin sheet shape. The “fiber” in the present invention is a structural unit such as a thread or a woven fabric, and is defined as a thin and flexible form having a sufficient length compared to the thickness, and is typically long. Continuous fibers are long fibers (filaments), and short fibers are short fibers (staples). In addition, the “fiber assembly” in the present invention refers to a single fiber structure composed of the above-described fibers, or a fiber structure in which the above-mentioned fibers are aligned in the length direction and / or radial direction (twisted yarn, spun yarn, plural Or a collection of the fiber structures. Typically, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon, rayon, etc. are used as materials, and practically, an assembly of long fibers (filaments) obtained by opening a tow is used. Often used as a fiber assembly.

  The sheet-like nonwoven fabric of the present invention is laminated on the fiber assembly of the present invention. This sheet-like nonwoven fabric may be configured as a single nonwoven fabric sheet layer, or may be configured by laminating a plurality of nonwoven fabric sheet layers having the same or different functions. The “nonwoven fabric” in the present invention is a sheet-like composition produced by fixing or intertwining fibers by a mechanical, chemical or thermal treatment, and is typically a hot-melt fiber (heat It is configured as a non-woven fabric that contains (plastic fibers) in part and can be fused (welded).

  The 1st welding junction part of this invention is comprised as a junction part extended along the direction which cross | intersects a predetermined direction, in order to weld-join a fiber assembly and a nonwoven fabric mutually. The first welded joint is sufficient if it has a configuration extending along a direction intersecting the predetermined direction, and a form in which the joint part extends in a continuous linear form or a form in which the joint part extends in a dotted manner. Etc. are widely included. On the other hand, the plurality of second welded joint portions of the present invention are configured as joint portions that are intermittently disposed along a direction intersecting a predetermined direction in order to weld and bond the fiber assembly and the nonwoven fabric to each other. The plurality of second welded joints need only be configured to be intermittently disposed along the direction intersecting the predetermined direction, and a configuration in which the plurality of joint portions are disposed on the same straight line or the same straight line The form etc. arrange | positioned in the position shifted | deviated from are widely included.

The first weld joint extends in a direction intersecting the predetermined direction at the central position of the cleaning body with respect to the predetermined direction. Further, the plurality of second welded joints are intermittently disposed along the direction intersecting the predetermined direction on each of both sides of the first welded joint with the first welded joint interposed therebetween.

In addition, the first weld joint is configured to join the entire fiber assembly in the thickness direction, and the second weld joint is configured to join a part of the fiber assembly on the nonwoven fabric side in the thickness direction.

Moreover, in this invention, the said fiber assembly is set as the structure containing a 1st fiber extension part and a 2nd fiber extension part. The first fiber extension portion is a portion where the fiber extends without the weld joint portion to the free end on the cleaning body end portion side in the predetermined direction with the first weld joint portion as a fixed end, The fiber extending portion is a portion where the fibers extend without the welded joint between the plurality of second welded joints as fixed ends and the free end on the cleaning body end side in the predetermined direction, and the second fiber The extension part has a fiber extension length that is shorter than the fiber extension length of the first fiber extension part. And the said fiber assembly is provided with the 1st fiber extension part and the 2nd fiber extension part on the nonwoven fabric side from a boundary line regarding the thickness direction. It is set as the structure provided with a fiber extension part.

According to the present invention, when the user gently shakes or unravels the cleaning body by hand so that the fiber aggregate includes air, the first fiber extension having a relatively long fiber length in the fiber aggregate. The part is easily entangled between fibers and hangs downward, while the second fiber extension part having a relatively short fiber length is less likely to get entangled with the first fiber extension part. As a result, when air is included in the fiber assembly, a fiber assembly in a uniform state in which unnecessary void portions are suppressed is formed, and the fiber assembly spreads as a whole densely. It will be in the state where the bulk of the aggregate was raised. This state is a state in which the density of the fibers is high and homogeneous, and can be defined as a state with a high volume feeling. “Bulky state”, “bulk state”, “volume up state”, “space filling degree” "High state" or "high bulky state". Therefore, it is possible to improve the cleaning effect by increasing the bulk of the fiber assembly. In addition, by increasing the bulk of the fiber assembly, the degree of adhesion to the surface to be cleaned is increased, the stain of the fiber assembly is likely to stand out (easily blackened), and the user is surely capturing dust. A sense of realism will be obtained and satisfaction will increase. In addition, the first weld joint extends to the center of the cleaning body in a predetermined direction, and the second weld joint is disposed on both sides of the first weld joint across the first weld joint. A right and left balanced shape is realized with respect to the shape of the fiber assembly when air is included in the fiber assembly.

Moreover, in the cleaning body of the further form which concerns on this invention, the fiber of a 1st fiber extension part has a substantially the same length, and the fiber of a 2nd fiber extension part has a substantially the same length. doing.

Moreover, in the cleaning body of the further form which concerns on this invention, a 2nd welding joining part consists of a circular arc part whose circular arc diameter is 7-12 [mm], and circular arc angle is 90-360 [degree].

Moreover, in the cleaning body of the further form which concerns on this invention, the some 2nd welding joining part is arrange | positioned in the position shifted | deviated from the same straight line.

Moreover, in the cleaning body of the further form which concerns on this invention, a cleaning body main body and a holding sheet are mutually joined by the 1st welding joining part extended in the direction which cross | intersects a predetermined direction in the cleaning body center position regarding a predetermined direction, Moreover, it is mutually joined by the 2nd welding joining part provided in the both sides of the 1st welding joining part.

Moreover, in the cleaning body of the further form which concerns on this invention, two 2nd welding joining parts adjacent to each other arrange | positioned in the cleaning body center position are one 2nd welding joining parts regarding the direction which cross | intersects a predetermined direction. To the one end of the cleaning body and the distance from the other second welded joint to the other end of the cleaning body.
According to such a configuration of the cleaning body of the present invention, even when the cleaning body is inverted and used, the main cleaning portion with the highest bulk is always located at the central position of the cleaning body of the fiber assembly. The user can use the cleaning body without a sense of incongruity as before the inversion.

  The cleaning tool according to the present invention includes at least a cleaning body as described above and a cleaning body holder. The cleaning body holder according to the present invention has a structure in which a gripping part gripped by a user during a cleaning operation and a cleaning body holding part for holding the cleaning body are formed in a connected manner. Moreover, the cleaning body holding | maintenance part of this cleaning body holder is comprised with respect to the cleaning body so that attachment or detachment is possible. Therefore, in the mounted state of the cleaning body holder with respect to the cleaning body, the cleaning body is held by the cleaning body holding portion of the cleaning body holder, and the cleaning operation is performed after the user holds the gripping portion of the cleaning body holder. . On the other hand, the user can replace the cleaning body by removing the cleaning body from the cleaning body holder of the cleaning body holder as necessary. According to such a structure, the cleaning tool provided with the cleaning body with a high cleaning effect is provided. In addition, regarding the form which mounts the cleaning body holder with respect to a cleaning body, various structures can be employ | adopted, and the form which inserts the protruding cleaning body holding part in the holding space part by the side of the cleaning body typically is installed. Can be used.

  In the present invention, the cleaning body mounted on the cleaning body holder of the cleaning body holder is a disposable type that is intended for single use, and holds the dust and dust removed from the surface to be cleaned in the brush section. However, it may be a disposable type that is exchanged with reference to a plurality of uses, or a type that can be used repeatedly after washing.

  As described above, the present invention relates to a sheet-like cleaning body that performs wiping cleaning of a cleaning target, and in particular, devise a configuration of a welding joint portion that welds and joins a fiber assembly and a nonwoven fabric constituting the cleaning body. As a result, it became possible to improve the cleaning effect.

It is a perspective view of the state before assembling the cleaning body 110 and the cleaning body holder 120 which comprise the cleaning tool 100 of this Embodiment. It is a perspective view in the separated state of the cleaning body holder 120 in FIG. It is a perspective view of the state which separated the cleaning body 110 in FIG. 1 into each component. It is the top view seen from the surface side of the cleaning body 110 in FIG. It is the top view seen from the back surface side of the cleaning body 110 in FIG. It is a figure which shows the cross-section regarding the AA line of the cleaning body 110 in FIG. It is a figure which shows the cross-section regarding the BB line of the cleaning body 110 in FIG. It is a perspective view which shows a mode that the cleaning body 110 of this Embodiment is mounted | worn with the cleaning body holder 120. FIG. It is a perspective view which shows a mode that the cleaning body 110 of this Embodiment is mounted | worn with the cleaning body holder 120. FIG. FIG. 10 is a perspective view showing a state where the cleaning body 110 is further unwound in the cleaning tool 100 shown in FIG. 9. It is a top view which shows the structure of the cleaning body 210 of another embodiment. It is a top view which shows the structure of the cleaning body 220 of another embodiment. It is a top view which shows the structure of the cleaning body 230 of another embodiment. It is a top view which shows the structure of the cleaning body 240 of another embodiment. It is a top view which shows the structure of the cleaning body 250 of another embodiment. It is a top view which shows the structure of the cleaning body 260 of another embodiment. It is a top view which shows the structure of the cleaning body 270 of another embodiment. It is a top view which shows the structure of the cleaning body 280 of another embodiment. It is a top view which shows the structure of the cleaning body 290 of another embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the configuration of a cleaning tool 100 according to an embodiment of the “cleaning tool” in the present invention will be described with reference to FIGS. The cleaning object to be cleaned using the cleaning tool 100 is a surface to be cleaned (floor surface, wall surface, window, ceiling surface, outer wall surface, furniture, etc.) such as a single-family house, condominium, building, factory, vehicle, etc. Surface, clothes, curtains, bedding, lighting, home appliances, etc.) and surfaces to be cleaned in each component of the human body. These various surfaces to be cleaned may be configured as a flat surface, or may be configured as a curved surface, an uneven surface, or a step surface.

  FIG. 1 shows a perspective view of a state before the cleaning body 110 and the cleaning body holder 120 constituting the cleaning tool 100 of the present embodiment are assembled together. As shown in FIG. 1, the cleaning tool 100 is roughly divided into a cleaning body 110 and a cleaning body holder 120.

  The cleaning body 110 has a configuration in which the holding sheet 112 is bonded to the upper surface of the cleaning body main body 111 in a laminated form. The cleaning body 110 is a sheet-like cleaning body having a dirt cleaning function for scraping off dirt on a surface to be cleaned which is a cleaning target in wiping cleaning. As shown in FIG. 1, the cleaning body 110 has a rectangular shape in plan view, and is configured to extend in a long shape in a predetermined longitudinal direction (long side extending direction). This predetermined longitudinal direction substantially coincides with a direction intersecting with an extending direction in which a plurality of fibers constituting a fiber assembly described later extend. The cleaning body 110 corresponds to the “cleaning body” in the present invention. In addition, as needed, this cleaning body 110 can also be comprised as a cleaning body of planar view square.

  Although the details will be described later, the cleaning body main body 111 constituting the cleaning body 110 is joined in such a manner that the sheet-like base material sheet 111a, the fiber assembly 111b, and the cleaning target side sheet 111c are stacked on top of each other. The configuration is The base sheet 111 a, the fiber assembly 111 b, and the cleaning target side sheet 111 c have the same rectangular shape in plan view, and are all configured to extend in the longitudinal direction of the cleaning body 110. The fiber assembly 111b and the cleaning target side sheet 111c constitute a brush-like portion having a dirt scraping function, and are also referred to as so-called “brush portions”. This cleaning body 110 is a disposable type that is used only once as a guide, or a disposable type that is exchanged using a plurality of uses as a guide while holding dust and dust removed from the surface to be cleaned in the brush portion. The thing of the type which can be used repeatedly after washing etc. may be sufficient. Moreover, in this Embodiment, although the cleaning body main body 111 of the cleaning body 110 was set as the structure on which the base material sheet 111a, the fiber assembly 111b, and the cleaning object side sheet | seat 111c were piled up, it is this cleaning body main body 111. It can also be set as the structure where the further fiber layer and sheet | seat were added.

  The cleaning body main body 111 and the holding sheet 112 include a central welding wire 113 extending in the longitudinal direction in the central portion of the cleaning body 110 and a pair of left and right welding joint portions 114 located on both sides of the central welding wire 113. In addition, it is welded and joined at the welded joint 116.

The central weld line 113 is configured as a weld joint part that joins the cleaning body main body 111 and the holding sheet 112 together. This central welding line 113 extending in the longitudinal direction in the central portion of the cleaning body 110 is formed along the direction intersecting the predetermined direction in order to weld and bond the fiber assembly and the nonwoven fabric to each other. This corresponds to the “first welded joint portion”.
Further, the weld joint 114 and the weld joint 116 are configured as weld joints that join the base sheet 111a of the cleaning body main body 111, a part of the fiber assembly 111b, and the holding sheet 112 to each other. . By the welding joint portion 114 referred to herein, “a plurality of second welding joint portions intermittently disposed along a direction intersecting a predetermined direction in order to weld and join the fiber assembly and the nonwoven fabric” in the present invention. Composed.

  As a result, a pair of left and right holding spaces 115, 115 extending in the longitudinal direction in the front-rear direction are formed between the central weld line 113 and the weld joint 114 and the weld joint 116. Each holding space 115 is configured as a space region whose rear side is opened at the rear opening end 115a and whose front side is opened at the front opening end 115b. Each holding space 115 is a region portion into which a holding plate 132 of the holder main body 130 described later is inserted (attached), and can be inserted from both the rear opening end 115a and the front opening end 115b.

  As shown in FIG. 1, the cleaning body holder 120 is configured such that the cleaning body 110 configured as described above is detachable, and includes a holder main body 130 and a handle portion 140 that are connected to each other. This cleaning body holder 120 corresponds to the “cleaning body holder” in the present invention. The handle portion 140 includes a handle main body 141 extending in a long shape, and a connecting portion 141 a interposed between the handle main body 141 and the holder main body 130. The handle main body 141 is a part to be gripped by the user, and corresponds to a “grip part” in the present invention. The connecting portion 141a constitutes a portion that connects the handle main body 141 and the holder main body 130 in a fixed manner.

  Although details will be described later, in the present embodiment, the holder main body 130 molded with a resin material and the handle portion 140 (the handle main body 141 and the connecting portion 141a) molded with the resin material are integrally formed after molding. It has a structure that can be assembled to. According to this configuration, it is possible to improve the weight of the entire cleaning tool and to reduce the cost related to the manufacturing of the cleaning tool. Instead of this configuration, the holder main body 130 and the handle portion 140 (the handle main body 141 and the connecting portion 141a) are integrally molded, or any two of the holder main body 130, the handle main body 141, and the connecting portion 141a are integrated. You may employ | adopt the structure made into shaping | molding, or may employ | adopt the structure which assembles what was shape | molded independently each in the fixed form.

  The holder main body 130 is a part having a function of detachably holding the cleaning body 110 and corresponds to a “cleaning body holding portion” in the present invention. In the holder main body 130, a pair of left and right holding plates 132 and 132 and a presser plate 134 are provided on the base portion 131 on the handle portion 140 side. The pair of left and right holding plates 132, 132 is configured as a longitudinal plate member extending in parallel from the base portion 131 with a predetermined interval therebetween. That is, the holder main body 130 has a fork shape whose tip is divided into two forks. The horizontal width of each holding plate 132 is set constant in the longitudinal direction or narrowly toward the tip.

  In addition, each holding plate 132 is provided with protrusions 133 and 133 at two locations on the front and rear sides of the outer edge thereof. Each protrusion 133 has an elliptical shape whose outer shape protrudes toward the outside of the holding plate 132, and its protruding surface has a convex curve shape. Regarding the outer shape of the holding plate 132, for example, an elliptical shape having an arc angle of 180 [°], a long axis of 16 [mm], and a short axis of 8 [mm] can be used. Moreover, each protrusion 133 is configured to have a hollow portion 133a whose central portion is open. The presser plate 134 is configured as a plate-like member that extends forward between the pair of left and right holding plates 132 and 132 and is curved so as to be convex downward. A locking projection (not shown) is provided on the lower surface.

  Each holding plate 132 can be inserted into each holding space 115 and has a function of holding the cleaning body 110 in this inserted state. In this inserted state, each holding plate 132 is fitted in each holding space 115 so as to be in close contact with each other, and gives a fixing action to the cleaning body 110. Further, in this inserted state, the presser plate 134 presses the cleaning body 110 from above, and a locking protrusion (not shown) provided on the lower surface of the presser plate 134 acts as a retaining member for the cleaning body 110. Thereby, in the inserted state in which each holding plate 132 is inserted into each holding space 115, the cleaning body 110 is reliably held by the holder main body 130.

  Moreover, the perspective view in the isolation | separation state of the cleaning body holder 120 in FIG. 1 is shown by FIG. As shown in FIG. 2, the holder main body 130 and the handle portion 140 are configured to be assembled together after resin molding, and are configured to be separable from each other. The holder main body 130 includes a fitted plate 131 a on the rear end side of the base portion 131, while the handle portion 140 includes a first fitting plate 143 and a second fitting plate 144 on the distal end side of the handle main body 141. Further, a fitting region 145 into which the fitted plate 131a can be fitted is formed between the first fitting plate 143 and the second fitting plate 144, and the fitting region 145 has a first fitting. A convex portion (not shown) that can be engaged with the concave portion 131 b of the plywood 143 is provided. In such a configuration, when the to-be-fitted plate 131a is fitted in the fitting region 145, the first to-be-fitted plate 131a is sandwiched from above and below by the first fitting plate 143 and the second fitting plate 144. By engaging the convex portion of the fitting region 145 with the concave portion 131 b of the plywood 143, a fastening action is imparted between the holder main body 130 and the handle portion 140. On the other hand, in a state where the holder main body 130 and the handle portion 140 are fixed to each other, the holder main body 130 and the handle portion 140 can be disassembled by pulling them in the separating direction with a pulling force larger than the fixing force. It becomes possible.

  Here, FIGS. 3 to 6 are referred to for a specific configuration of the cleaning body 110 of the present embodiment. FIG. 3 is a perspective view showing a state in which the cleaning body 110 in FIG. 1 is separated into each component. Moreover, the top view seen from the surface side of the cleaning body 110 in FIG. 1 is shown in FIG. 4, and the top view seen from the back surface side of the cleaning body 110 in FIG. 1 is shown in FIG. 6 shows a cross-sectional structure of the cleaning body 110 in FIG. 4 with respect to the line AA, and FIG. 7 shows a cross-sectional structure of the cleaning body 110 in FIG. 4 with respect to the line BB.

  As shown in FIG. 3, the cleaning body 110 of the present embodiment has a configuration in which a cleaning body main body 111 and a holding sheet 112 are stacked in order from the cleaning target side (also referred to as “lower surface side” or “back surface side”). Furthermore, the cleaning body main body 111 is configured such that the cleaning target side sheet 111c, the fiber assembly 111b, and the base sheet 111a are laminated in order from the cleaning target side (lower surface side). In this case, the holding sheet 112 and the base sheet 111a are upper surface side sheets laminated on the opposite side of the cleaning target side sheet 111c (lower surface side sheet) with the fiber assembly 111b interposed therebetween. Each of the holding sheet 112, the base sheet 111 a, and the cleaning target side sheet 111 c includes a plurality of zigzag strips (strip portions) extending in a direction intersecting the longitudinal direction of the cleaning body 110.

  Specifically, with respect to the holding sheet 112, a plurality of strip pieces 112 a extend in parallel in a direction intersecting the longitudinal direction of the cleaning body 110. In addition, with respect to the base sheet 111a, a plurality of strips 111d extend in parallel in a direction intersecting with the longitudinal direction of the cleaning body 110, and with respect to the cleaning target side sheet 111c, the longitudinal direction of the cleaning body 110. A plurality of strips 111e extend in parallel in a direction intersecting with. By making the strips of each sheet into a zigzag shape, a structure with a high cleaning function that can easily catch and capture dust is realized. In addition, regarding the shape of the strip, a single type or a plurality of types of shapes such as a zigzag shape, a linear shape, and a curved shape can be appropriately used.

  As shown in FIG. 4, in the base sheet 111 a, the strip piece 111 d is configured to extend outward from the weld joint 114 and the weld joint 116 that extend along the longitudinal direction of the cleaning body 110. . Further, in the holding sheet 112 laminated on the upper surface of the base sheet 111 a, the strip piece 112 a having the same shape as the strip piece 111 d has a weld joint portion 114 and a weld joint portion 116 that extend along the longitudinal direction of the cleaning body 110. The structure extends from the outside to the outside.

  On the other hand, as shown in FIG. 5, in the cleaning target side sheet 111 c, the strip pieces 111 d and the strip pieces 111 e narrower than the strip pieces 112 a are removed from the central welding line 113 extending along the longitudinal direction of the cleaning body 110. It is set as the structure extended to the direction. Accordingly, the strip 111e is joined at the base end side at the welded joint portion of the central weld wire 113, and is elongated with the central weld wire 113 as a fixed end and the opposite side (front end side) of the fixed end as a free end. It is set as the structure extended in a shape.

  Next, the configuration of the nonwoven fabric that forms the base sheet 111a, the cleaning target side sheet 111c, and the holding sheet 112, and the configuration of the fiber assembly that forms the fiber assembly 111b will be described in detail.

(Configuration of nonwoven fabric)
Regarding the base material sheet 111a, the cleaning object side sheet 111c, and the holding sheet 112, typically, a sheet-like non-woven fabric made of heat-meltable fibers (thermoplastic fibers) can be used. That is, the base material sheet 111a, the cleaning target side sheet 111c, and the holding sheet 112 are also referred to as non-woven fabric sheets. The base sheet 111a and the holding sheet 112 referred to here constitute the “sheet-like nonwoven fabric” in the present invention. This non-woven fabric is a sheet-like composition made by fixing or intertwining fibers by mechanical, chemical or thermal treatment, and includes thermoplastic fibers in part and is fused (welded). It is configured as a nonwoven fabric having a shape having a plurality of strips. As the thermoplastic fiber (hot melt fiber), polyethylene, polypropylene, polyethylene terephthalate, or the like can be used. As this nonwoven fabric, those manufactured by air-through method, spun bond method, thermal bond method, spun lace method, point bond method, melt blow method, stitch bond method, chemical bond method, needle punch method, etc. should be used as appropriate. Can do. This nonwoven fabric corresponds to the “nonwoven fabric” in the present invention. In addition, in order to improve the sweeping-out function at the time of cleaning, it is preferable to use a highly rigid nonwoven fabric. Instead of or in addition to the non-woven fabric, a material obtained by processing a material such as urethane, sponge, woven fabric, net, or walif into a strip shape may be used.

(Configuration of fiber assembly)
On the other hand, the fiber assembly 111b is a single fiber structure made of fibers or a fiber structure in which fibers are aligned in the length direction and / or radial direction (twisted yarn, spun yarn, and a plurality of long fibers are partially connected. And the like, or an aggregate of the fiber structure, and is configured as a fiber aggregate that includes thermoplastic fibers in part and can be fused (also referred to as “welding”). The fiber forming the fiber assembly 111b is a structural unit such as a thread or a woven fabric, and is defined as a thin and flexible form having a sufficient length as compared with the thickness. Long continuous fibers are long fibers (filaments), and short fibers are short fibers (staples). The fibers of the fiber assembly 111b are joined at the proximal end side by the central welding wire 113, the welding joint portion 114, and the welding joint portion 116, and the side facing the fixed end with the welding joint portion as a fixed end (tip) The side) is a free end, and the cleaning body 110 (or the fiber assembly 111b) extends in a longitudinal direction in a direction intersecting the longitudinal direction. The fiber assembly 111b extending in the direction intersecting the longitudinal direction of the cleaning body 110 corresponds to “a fiber assembly configured by collecting a plurality of fibers extending in a predetermined direction” in the present invention. The fiber assembly 111b is also referred to as a “fiber bundle” in which a plurality of fibers are formed in a bundle shape.

  In addition, in the example shown in FIG. 3, although the case where the fiber assembly 111b is formed by laminating | stacking three fiber layers on a laminated form is described, the number of this fiber layers is 1 or as needed. There can be multiple. The fiber aggregate 111b preferably has a planar structure with a predetermined plane or curved surface, and is configured as a three-dimensional shape having a certain thickness or a thin sheet shape. The “fiber assembly” here is typically made of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), nylon, rayon, etc., and practically obtained by opening the tow. An assembly of long fibers (filaments) is often used as this fiber assembly. In particular, it is preferable that the core portion is made of polypropylene (PP) or polyethylene terephthalate (PET), and the sheath portion covering the outer surface of the core portion is made of a composite fiber of polyethylene (PE). Moreover, the fineness of the long fibers forming this fiber assembly is preferably 1 to 50 dtex, more preferably 2 to 10 dtex. In addition, each fiber assembly may be composed of fibers having substantially the same fineness, or each fiber assembly may include fibers having different finenesses.

  Moreover, in order to improve the sweep-out function at the time of cleaning, it is preferable to use a fiber assembly including fibers having high rigidity, that is, fibers having high fineness. In addition, the fiber assembly is preferably configured to have crimped fibers. A crimped fiber here is comprised as a fiber to which the predetermined winding shrinkage process was provided, and is set as the structure where fibers are easy to get entangled. When such a crimped fiber is used, the fiber assembly becomes bulkier than the state before the cleaning body holder is mounted, and further, a structure in which dust is easily taken into the crimped portion is obtained. This structure can be realized in particular by using crimped fibers formed from tow fibers.

  As a fiber assembly, a flat yarn obtained by slitting a film into a tape shape and extending in the longitudinal direction, or a thermoplastic film resin called a split yarn is divided into a direction perpendicular to the orientation direction of the resin, and the fiber shape You may use what the obtained film was joined by mesh shape. Alternatively, as the fiber assembly, a bulky and low fiber density nonwoven fabric such as an air-through nonwoven fabric may be used.

  In addition, the types and number of components of the cleaning body 110 are not limited to the above example, and various selections can be made as necessary. The cleaning body 110 is configured to have a rectangular shape in plan view, and the long side thereof is disposed so as to extend on the longitudinal direction lines of the holder body 130 and the handle portion 140 of the cleaning body holder 120.

  Here, the structure of the welding joint part in the said cleaning body 110 is demonstrated in detail, referring FIG.4, FIG.6 and FIG.7. As shown in FIG. 4, a plurality of weld joints 114 and weld joints 116 are disposed at the left and right positions of the central weld line 113 along the extending direction of the central weld line 113 at the same left and right intervals. Yes. Specifically, on each of the left and right extending lines L1 of the central weld line 113, a weld joint 116 is disposed at each of the rear opening end 115a and the front opening end 115b, and between the two weld joints 116. Two welded joints 114 are provided. In the present embodiment, the shape of the weld joint portion of the weld joint 114 is a circle (perfect circle), and the shape of the weld joint portion of the weld joint 116 is a circle (perfect circle) and an ellipse superimposed on each other. It is made into the shape which is compounded by this and extends longitudinally.

  The weld joint 114 is disposed to face the central weld wire 113. A region defined by the weld joint 114 and the central weld wire 113 is a holding space 115 into which the holding plate 132 of the holder main body 130 is inserted. The weld joint 114 has at least an arc portion (curved surface) that is convex toward the protrusion 133 that protrudes outward from the holding plate 132 of the holder main body 130, thereby holding space 115. When the holding plate 132 is inserted, the sliding resistance acting between the protrusion 133 and the projection 133 is suppressed, and the holding plate 132 can be smoothly inserted. Therefore, it is possible to improve the mountability of the holding plate 132 of the holder main body 130 with respect to the cleaning body 110. As for the specific shape of the welded joint 114, a curved surface shape consisting of all or part of a circular or elliptical arc portion can be adopted.

  In addition, in addition to the convex shape of the welding joint part 114 and the protrusion 133, this effect which suppresses the sliding resistance which acts between the welding joint part 114 and the protrusion 133 provides the hollow part 133a in the protrusion 133. Can be further enhanced. That is, when the weld joint 114 and the projection 133 are in sliding contact, each projection 133 is easily bent toward the holding plate 132 due to the effect of the hollow portion 133a, and thereby, the gap between the weld joint 114 and the projection 133. Thus, the effect of suppressing the sliding resistance acting on the surface is enhanced. When this effect can be obtained only by the bending action of the holding plate 132 itself or the bending action of the material constituting the cleaning body 110, the protrusion 133 may be a solid structure.

  An area defined by the weld joint 114 and the weld joint 116 adjacent thereto is defined as an accommodation area 117 that accommodates the protrusion 133 of the holding plate 132 after the holding plate 132 is inserted. The weld joint 114 is held by interfering with the protrusion 133 accommodated in the accommodation region 117 and restricting the movement of the protrusion 133 in the front-rear direction (the direction corresponding to the longitudinal direction of the cleaning body 110). The protrusion 133 in the space 115 is positioned.

(Specific shape of weld joint 114)
The inventors of the present invention have studied a specific shape in the case of using a welded joint composed of a circular arc portion as the welded joint 114. As a result of the examination, it is preferable to use a welded joint having an arc diameter of 7 to 12 [mm] and an arc angle of 90 to 360 [°], more preferably an arc diameter of 10 [mm] and an arc angle of 180 [ °].

  By adopting the welding joint portion having the arc diameter as described above as the welding joint portion 114, when the holding plate 132 of the holder main body 130 is inserted, the projection 133 can smoothly get over the welding joint portion 114, Moreover, after insertion, the effect that the protrusion 133 once accommodated in the accommodation area | region 117 cannot be easily pulled out can be acquired. The reason for this is that if the arc diameter is too small, it becomes impossible to obtain smoothness due to abrupt bending when the projection 133 gets over the welded joint 114, whereas if the arc diameter is too large, the housing area once It is mentioned that the protrusion 133 accommodated in 117 does not have a sense of stability (fit feeling) and is easily removed.

  In addition, by adopting the above-described arc-shaped welding joint as the welding joint 114, the insertion direction of the holding plate 132 of the holder main body 130 can be stabilized, and the production by a known thermal welding equipment can be improved. The difficulty level can be lowered, and the appearance (also referred to as “beauty” or “beauty”) of the welded joint is improved. The reason for this is that if the arc angle is too small, the welded joint does not reliably engage with the protrusion 133 and the insertion direction of the holding plate 132 is difficult to be determined, and the joining area becomes small, and joint failure is likely to occur. Can be mentioned. As for the appearance of the welded joint, a design having an arc angle of 180 [°] to 360 [°] may be preferred.

  As shown in FIG. 6, the center welding wire 113 is configured to join the whole in the thickness direction of the fiber assembly 111b, whereas the welding joint 114 joins only a part in the thickness direction of the fiber assembly 111b. It is supposed to be configured. With this configuration, the fiber assembly 111b is divided into an upper fiber 118 above the boundary line L2 and a lower fiber 119 below the boundary line L2 with the boundary line L2 as the boundary in the thickness direction. Become. In addition, as needed, the structure which the welding junction part 114 joins the whole regarding the thickness direction of the fiber assembly 111b is also employable.

  Moreover, as shown in FIG.6 and FIG.7, the upper side fiber 118 is set as the structure further provided with both the 1st fiber extension part 118a and the 2nd fiber extension part 118b. The first fiber extending portion 118a is joined at the proximal end side by a central welding wire 113, and is elongated with the central welding wire 113 as a fixed end and the opposite side (front end side) of the fixed end as a free end. It is supposed to be a part extending to. That is, it is set as the structure by which the welding joining part does not intervene between the fixed end and free end of the 1st fiber extension part 118a. The second fiber extending portion 118b is a portion extending in a long shape with the welded joint portion 114 as a fixed end and the opposite side (front end side) of the fixed end as a free end. In other words, the weld joint is not interposed between the fixed end and the free end of the second fiber extension portion 118b.

  In the present embodiment, the center welding line 113 has a configuration in which the central portion of the cleaning body extends linearly in parallel with the long side of the cleaning body, and thus the fiber extension length in the first fiber extension portion 118a. Are equal. In addition, the welded joint 114 and the welded joint 116 are configured to extend in the horizontal direction along the extending direction of the central weld line 113 at the same left and right intervals at the left and right positions of the central weld line 113. The extending lengths of the fibers in the first fiber extending portion 118a are equal. According to such a configuration, it is effective to arrange and stabilize the shape of the fiber assembly 111b when air is contained in the fiber assembly 111b. A balanced shape is achieved. As for the configuration of the central welding wire 113, the joint portion may extend in a continuous linear shape, or the joint portion may extend intermittently. In addition, regarding the configuration of the welded joint 114 and the welded joint 116, each welded part may extend along a predetermined straight line, or may extend along a predetermined curve.

  The first fiber extension portion 118a referred to here is the "first fiber extension portion in which the fibers extend to the free end on the cleaning body end side with respect to the predetermined direction with the first welded joint portion as a fixed end in the present invention. The second fiber extension portion 118b referred to here is “the fiber extends to the free end on the cleaning body end side in the predetermined direction with the plurality of second welded joint portions as fixed ends in the present invention. This corresponds to “second fiber extending portion”.

  On the other hand, the lower fiber 119 is joined at the center welding line 113 at the base end side, and is elongated in the center welding line 113 as a fixed end and the opposite side (tip side) of the fixed end as a free end. It is assumed that it exists. In other words, the welded joint is not interposed between the fixed end and the free end of the lower fiber 119. Accordingly, the extension length d5 of the first fiber extension portion 118a and the extension length d5 of the lower fiber 119 of the upper fiber 118 are both the second fiber extension portion 118b of the upper fiber 118. It becomes longer than the extended length d4.

  According to such a configuration of the cleaning body 110 of the present embodiment, the relative bonding strength in which the fibers are bonded to the base sheet 111 a and the holding sheet 112 between the central welding wire 113 and the welding bonding portion 114. This is effective in obtaining a joining strength that cannot be obtained by joining the base sheet 111a and the holding sheet 112 alone. Further, the structure in which the horizontal portion is formed between the center welding wire 113 and the welding joint 114 makes it easy for the cleaning body 110 to follow the horizontal surface to be cleaned during cleaning, and is effective in enhancing the cleaning effect. is there.

  Further, when the user gently shakes or unravels the cleaning body 110 by hand so that the fiber aggregate 111b contains air, the first fiber extension portion having a relatively long fiber length in the fiber aggregate 111b. While 118a becomes easy to entangle between fibers and it is easy to hang down, the 2nd fiber extension part 118b whose fiber length is relatively short becomes difficult to get entangled with the 1st fiber extension part 118a. Thereby, when air is included in the fiber assembly 111b, the fiber assembly 111b in a homogeneous state in which unnecessary void portions are suppressed is formed, and the fiber assembly 111b spreads as a whole densely. Thus, the bulk of the fiber assembly 111b is increased. This state is a state in which the density of the fibers is high and homogeneous, and can be defined as a state with a high volume feeling. “Bulky state”, “bulk state”, “volume up state”, “space filling degree” "High state" or "high bulky state". Therefore, it is possible to improve the cleaning effect by increasing the bulk of the fiber assembly 111b. Further, by increasing the bulk of the fiber assembly 111b, the degree of adhesion to the surface to be cleaned is increased, the stain of the fiber assembly 111b is likely to stand out (is likely to become black), and the user can reliably catch dust. The satisfaction will be increased.

  In particular, in the present embodiment, the distance (interval) d1 between two adjacent weld joints 114 disposed at the center of the cleaning body in the front-rear direction is equal to the weld joint 114 on the tip side and the weld joint. A configuration is adopted in which the distance d2 is longer than the distance d2 between the rear end side 116 and the distance d3 between the weld joint 114 on the rear end side and the weld joint 116. The fibers in the non-welded joint portion between the two weld joint portions 114 have a function as a main cleaning portion (main cleaning portion 111f in FIG. 10 described later) that mainly collects dust. On the other hand, the fibers in the non-welded joint portion between the weld joint portion 114 and the weld joint portion 116 and the fibers in the non-weld joint portion from the weld joint portion 116 to the end of the cleaning body further capture dust. It functions as an auxiliary cleaning part (auxiliary cleaning part 111g in FIG. Therefore, according to this Embodiment, the main cleaning part with the highest bulk among the fiber assemblies 111b is formed at the central position of the cleaning body between the two weld joints 114 in the longitudinal direction. At the time of cleaning, the cleaning body 110 is generally used in a state in which the front end side is lowered from the rear end side, but the most bulky fiber assembly 111b as in the present embodiment. By adopting a configuration in which the main cleaning portion that is increased is formed at the central position of the cleaning body, there is an effect that the fiber assembly 111b easily acts on the surface to be cleaned.

  In the present embodiment, the distance from the welding joint 114 on the front end side to the front end of the cleaning body 110 and the distance from the welding joint 114 on the rear end side to the rear end of the cleaning body 110 are the same. Preferably there is. According to such a configuration, even when the holding plate 132 of the holder main body 130 is inserted from either the rear opening end 115a or the front opening end 115b, the predetermined cleaning body center position of the fiber assembly 111b is always provided. Therefore, the user can use the cleaning body 110 without a sense of incongruity as before the reversal even when the cleaning body 110 is reversed and used.

  On the other hand, the weld joint 116 is disposed at the rear opening end 115a and the front opening end 115b, so that the holding plate 132 with respect to the holding space 115 is inserted when the holding plate 132 of the holder body 130 is inserted into the holding space 115. It has a function to guide (guide) the smooth insertion. Therefore, the welding joint portion 116 is configured to extend in the longitudinal direction, and preferably includes a linear portion that extends linearly along the longitudinal direction at a position toward the holding space 115. Thereby, when the holding plate 132 of the holder main body 130 is inserted into the holding space 115, the holding plate 132 can be more smoothly guided to the holding space 115.

(Specific shape of weld joint 116)
The present inventors examined a specific shape of the weld joint 116. As a result of the examination, the length of extension in the longitudinal direction of the weld joint 116 can be set to 10 to 17 [mm], and more preferably 15 [mm]. By adopting the welding joint portion having such an extended length as the welding joint portion 116, the insertion operation of the holding plate 132 of the holder main body 130 can be stabilized, and the insertion position of the holding plate 132 can be easily recognized. Therefore, the difficulty in production by the known heat welding equipment can be reduced. The reason for this is that if the extension length of the welded joint is too short, the insertion operation of the holding plate 132 is not stable, the insertion position of the holding plate 132 is difficult to recognize, and the joining position is slightly deviated from the specified position. In this case, the fiber assembly 111b, the base sheet 111a, and the holding sheet 112 cannot be reliably bonded.

  8 to 10 are referred to with respect to the usage pattern of the cleaning tool 100 having the above configuration. 8 and 9 are perspective views showing how the cleaning body 110 of the present embodiment is mounted on the cleaning body holder 120. FIG. FIG. 10 is a perspective view of the cleaning tool 100 shown in FIG.

  When using the cleaning tool 100, the holding plate 132 of the holder main body 130 is inserted from the rear opening end 115a of the holding space 115 by the mounting operation as shown in FIG. 120 is attached. Note that the cleaning body 110 of the present embodiment has a configuration in which the holding space 115 has the rear opening end 115a and the front opening end 115b, and therefore, if necessary, from the front opening end 115b of the holding space 115 to the holder By inserting the holding plate 132 of the main body 130, the cleaning body 110 can be inverted and attached to the cleaning body holder 120.

  In the mounting operation of the cleaning body holder 120 with respect to the cleaning body 110, first, each holding plate 132 is inserted into the holding space 115 from the front end side. At this time, in each holding plate 132, the protrusion 133 on the tip side of the holder engages with the inner edge portion of the welded joint 116. Thereby, each holding plate 132 is positioned with respect to the holding space 115. In the present embodiment, since the weld joint 116 has a component extending along the longitudinal direction, the traveling direction of each holding plate 132 is naturally determined linearly without the operator being particularly conscious, Each holding plate 132 is smoothly guided to the front side through the holding space 115.

  In addition, when the holding plate 132 is inserted into the holding space 115, the protrusion 133 on the front end side of the holder gets over the arc portion of the welding joint 114 on the rear end side, and further, the welding joint 114 on the front end side Get over the arc. At this time, each holding plate 132 has an operation in which the holding plate 132 and the protrusion 133 themselves bend inward and return to bend each time the protrusion 133 on the holder tip side passes over the arc portion of the welding joint 114. (Bending return operation) is repeated, and the resistance given to the user changes continuously. Such a change in resistance is transmitted to the user as an operation in which the distance between the left and right holding plates 132 is narrowed and spreads later, so that the cleaning body holder 120 is securely attached to the cleaning body 110 and is difficult to come off. It is effective to give the user a sense of security that this is the case.

  In a state where the protrusion 133 on the front end side of the holder and the protrusion 133 on the rear end side of the holder are accommodated in the respective accommodation regions 117, the base 131 of the holder main body 130 interferes with the rear opening end 115a. Is moved to the front, and the cleaning body holder 120 is attached to the cleaning body 110. In this mounted state, the movement of the protrusion is restricted by the welded joints 114 and 116 on both sides thereof, and the cleaning body 110 is prevented from being detached from the cleaning body holder 120 due to vibrations that slightly shake the cleaning body holder 120. (Anti-prevention effect)

  As a result, the cleaning tool 100 is in a state as shown in FIG. 9. This state is a state in which the thickness of the cleaning body 110 is suppressed, and the cleaning target side sheet 111 c facing the cleaning target surface to be cleaned. Is separated from the fiber assembly 111b, the desired cleaning function is not exhibited. Therefore, in order to obtain a desired cleaning function, it is preferable to perform a breaking operation so that the fiber assembly 111b of the cleaning body 110 in FIG. This unraveling operation can be performed by lightly shaking or unscrewing the cleaning body 110 directly by hand so that the fiber aggregate 111b contains air, or by gently shaking while holding the cleaning body holder 120 by hand.

  By such an unraveling operation of the cleaning body 110, the fibers of the fiber assembly 111b are mixed with the strips 111e of the cleaning target side sheet 111c, and the strips 111e rotate together (turn around in a rotating manner). One free end side hangs downward by its own weight around the center welding line 113 which is a fixed end. At this time, in the cleaning body 110, the fibers of the fiber assembly 111b hang down around the welding joint portion of the central welding wire 113 together with the strips 111e of the cleaning target side sheet 111c, and the fiber assembly 111b contains air. This increases the bulk compared to the state before the cleaning body holder 120 is mounted. That is, the cleaning body 110 swells with air included between the fibers of the fiber assembly 111b in synchronization with the rotation of the strip 111e of the cleaning target side sheet 111c.

  In particular, in this embodiment, since the width of the strip 111e of the cleaning target side sheet 111c is relatively smaller than that of the strip 111d on the base sheet 111a side, the strip 111e is a fiber assembly. The volume of the fiber assembly 111b can be increased without depriving the elasticity of the body 111b, and the user's expectation and security for the dust trapping function is increased. In addition, by forming the fiber assembly 111b using the crimped fibers as described above, it is possible to realize a structure in which the fibers of the fiber assembly 111b are easily entangled with the strips 111e of the cleaning target side sheet 111c. .

  Thus, as shown in FIG. 10, the fibers of the fiber assembly 111b are mixed with the strips 111e of the cleaning target side sheet 111c, and the volume of the main cleaning portion 111f of the fiber assembly 111b is increased and the volume is increased. Will be formed. When the main cleaning part 111f formed between the auxiliary cleaning parts 111g and 111g before and after the cleaning body 110 swells, the main cleaning part 111f can easily follow the unevenness or curved surface which is the surface to be cleaned (adhesion). Easy to do). At this time, the fibers of the fiber assembly 111b mixed together exhibit a cleaning function by the cooperation of the strips 111e of the cleaning target side sheet 111c. In particular, the fiber assembly 111b is contaminated between the fibers and the crimped portion of the fiber, and forms the core of the dirt collecting function. Furthermore, when the fiber assembly 111b is exposed downward from the strip piece 111e, the amount of the fiber assembly 111b increases and the volume appears to increase, giving the user a sense of expectation and security for the dust trapping function. can do. On the other hand, the strip piece 111e has an additional dirt collecting function for the fiber aggregate 111b which forms the core of the dirt collecting function. The strips 111e easily enter finer irregularities and curved surfaces, and exhibit a cleaning function by holding dirt between the strips and between the strips. Note that the strip 111d of the base sheet 111a and the strip 112a of the holding sheet 112 are difficult to synchronize with the movement of the fiber assembly 111b, and exhibit a dust sweeping function independent of the movement of the fiber assembly 111b.

(Other embodiments)
In addition, this invention is not limited only to said embodiment, A various application and deformation | transformation can be considered. For example, each of the following embodiments to which the above embodiment is applied can be implemented.

  In the above-described embodiment, a description is given of a configuration in which the distance from the weld joint portion 114 on the front end side to the front end of the cleaning body 110 matches the distance from the weld joint portion 114 on the rear end side to the rear end of the cleaning body 110. However, in the present invention, the distance from the weld joint portion 114 on the end side to the front end of the cleaning body 110 is different from the distance from the weld joint portion 114 on the rear end side to the rear end of the cleaning body 110. May be.

  Moreover, in the said embodiment, although the welding joining part 114 and the welding joining part 116 described about the cleaning body arrange | positioned in the left-right position of the center welding wire 113, in this invention, the welding joining part 114 and the welding joining are described. A configuration in which the portion 116 is disposed on either the left or right side of the central welding wire 113 can also be employed.

  Further, in the above embodiment, the case where a circular welded joint as shown in FIG. 4 is used as a specific shape of the welded joint 114 has been described, but this welded joint is at least on the side of the central welded wire 113. It suffices to have a convex portion that protrudes toward the side, and the shape and number of installation of the welded joint can be variously changed as necessary. For example, it is possible to employ a welded joint having a shape as shown in FIGS. The cleaning bodies 210 to 260 shown in FIGS. 11 to 16 are substantially the same as the configuration of the cleaning body 110 except that the shape or the number of the first welding joints is different from the welding joints 114. .

  In the cleaning body 210 shown in FIG. 11, a weld joint having an arc angle of 180 [°] is used as the first weld joint 211. Further, in the cleaning body 220 shown in FIG. 12, a weld joint portion having a shape (filled shape) in which the entire circle is completely joined is used as the first weld joint portion 221. If the first welded joint portion 221 having such a shape is employed, the joining area is increased, the joining strength is increased, a strong appearance is obtained, and the position of the holding space is easily recognized by the operator. In the cleaning body 230 shown in FIG. 13, a weld joint portion having a shape (double round shape) in which a small diameter circle is arranged inside a large diameter circle is used as the first weld joint portion 231. If the 1st welding junction part 231 of such a shape is employ | adopted, it will be excellent in cosmetics, and joint strength will become high by joining twice. Further, in the cleaning body 240 shown in FIG. 14, a welding joint portion having a shape formed by combining a plurality of circles having different diameters is used as the first welding joint portion 241. By adopting the first welded joint portion 241 having such a shape, it is possible to perform excellent joining as well as excellent cosmetics.

  In the cleaning body 250 shown in FIG.15 and FIG.16, the structure which increased the number of installation of the welding joining part 114 is used. In particular, in the cleaning body 260 shown in FIG. 16, in the configuration of the cleaning body 110 shown in FIG. 4, another welding joint 114 is provided between the two welding joints 114 disposed at the central positions on the left and right of the cleaning body. A configuration in which is provided is adopted. In this case, two sets of two welded joints 114 adjacent to each other are disposed at the central positions on the left and right of the cleaning body. However, in this configuration as well, the cleaning body 110 and the Similarly, the distance (interval) d1 between the two welded joints 114 disposed at the center position is the distance d2 between the welded joints 114 and the welded joints 116 on the front end side or the rear end side. It is preferable that the distance is longer than the distance d3 between the weld joint 114 and the weld joint 116. In addition, when increasing the installation number of the 1st welding junction part, all the 1st welding junction parts do not necessarily need to be arrange | positioned on a straight line.

  Moreover, in the said embodiment, the case where the welding junction part of the shape where a circle | round | yen (perfect circle) and an ellipse were compounded as shown in FIG. 4 as a concrete shape of the welding junction part 116 was described. However, it is sufficient for the welded joint portion to have at least a portion extending in the longitudinal shape, and the shape and the number of the welded joint portions can be variously changed as necessary. For example, it is possible to employ a welded joint having a shape as shown in FIGS. The cleaning bodies 270 to 290 shown in FIGS. 17 to 19 are substantially the same as the configuration of the cleaning body 110 except that the shape of the second welding joint is different from the welding joint 116.

  In the cleaning body 270 shown in FIG. 17, an elliptical weld joint is used as the second weld joint 271. Further, in the cleaning body 280 illustrated in FIG. 18, a weld joint portion having a shape formed by only a part of the elliptical weld joint portion is used as the second weld joint portion 281. Further, in the cleaning body 290 shown in FIG. 19, a weld joint portion having a shape in which a circular weld joint portion is combined and arranged in a longitudinal shape is used as the second weld joint portion 291. The second welding joint portions 271, 281, 291 having such a shape can stabilize the operation of inserting the holding plate 132 as well as the welding joint portion 116, and in particular, the second welding joint portion 291 If used, the bonding strength increases by increasing the bonding area.

DESCRIPTION OF SYMBOLS 100 ... Cleaning tool 110 ... Cleaning body 111 ... Cleaning body main body 111a ... Base material sheet 111b ... Fiber assembly 111c ... Cleaning object side sheet 111d, 111e ... Strip piece 111f ... Main cleaning part 111g ... Auxiliary cleaning part 112 ... Holding sheet 112a ... strip 113, central welding wire 114, 116 ... welding joint 115 ... holding space 115a ... rear opening end 115b ... front opening end 117 ... accommodation region 118 ... upper fiber 118a ... first fiber extension 118b ... first 2 fiber extension portion 119 ... lower fiber 120 ... cleaning body holder 130 ... holder body 131 ... base portion 132 ... holding plate 133 ... projection portion 133a ... hollow portion 134 ... presser plate 140 ... handle portion 141 ... handle body 141a ... connection Part

Claims (7)

A fiber assembly configured by aggregating a plurality of fibers extending in a predetermined direction;
A sheet-like non-woven fabric laminated on the fiber assembly;
A first weld joint extending along a direction intersecting the predetermined direction at a central position of the cleaning body in the predetermined direction in order to weld and bond the fiber assembly and the nonwoven fabric to each other;
In order to weld and bond the fiber assembly and the nonwoven fabric to each other, the fiber assembly and the nonwoven fabric are intermittently disposed along the direction intersecting the predetermined direction on both sides of the first welded joint portion with the first welded joint portion interposed therebetween. A plurality of second weld joints;
With
The first welded joint is configured to join the entire fiber assembly in the thickness direction,
The second welded joint part is configured to join a part of the nonwoven fabric side of the fiber assembly with respect to the thickness direction,
The fiber assembly includes a first fiber extension portion in which fibers extend without a welded joint portion between the first welded joint portion as a fixed end and a free end on the cleaning body end side with respect to the predetermined direction. A second fiber extension portion in which fibers extend without a weld joint portion up to a free end on the cleaning body end portion side in the predetermined direction with the plurality of second weld joint portions as fixed ends, The second fiber extension part has a fiber extension length shorter than the fiber extension length of the first fiber extension part, and the nonwoven fabric side from the boundary line in the thickness direction is 1 fiber extension part and 2nd fiber extension part are provided, and it is set as the structure provided with the said 1st fiber extension part on the opposite side to the said nonwoven fabric from the said boundary line. body. The cleaning body according to claim 1 ,
The fibers of the first fiber extension portion have substantially the same length, and the fibers of the second fiber extension portion have substantially the same length. The cleaning body according to claim 1 or 2 ,
The said 2nd welding joining part consists of a circular arc part whose circular arc diameter is 7-12 [mm], and circular arc angle is 90-360 [degree], The cleaning body characterized by the above-mentioned. A cleaning element according to any one of claims 1 to 3,
The cleaning body, wherein the plurality of second welded joints are disposed at positions shifted from the same straight line. It is a cleaning object given in any 1 paragraph of Claims 1-4 ,
A holding sheet laminated on the opposite side of the nonwoven fabric to the fiber assembly;
A cleaning body, wherein the cleaning body main body and the holding sheet are joined to each other at the first welding joint and the second welding joint . It is a cleaning object given in any 1 paragraph of Claims 1-5 ,
Two adjacent second welded joints disposed at the central position of the cleaning body with respect to the direction intersecting the predetermined direction are connected to one end of the cleaning body from the second welded joint with respect to the direction intersecting the predetermined direction. And the distance from the other second welded joint to the other end of the cleaning body are the same. The cleaning body according to any one of claims 1 to 6 ,
A cleaning body holder in which a gripping part gripped by a user during a cleaning operation and a cleaning body holding part for holding the cleaning body are formed in a connected manner;
With
A cleaning tool in which the cleaning body holding portion of the cleaning body holder is detachably attached to the cleaning body.

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