Cleaning tool and main body of cleaning tool

Abstract

To provide a cleaning tool in which a connection part is hardly loosened.SOLUTION: A coupling portion between the main body portion (3) and the branch portion (4) is constituted by a first threaded portion (5) provided on an inner side in a radial direction and a second threaded portion (6) provided on an outer side in the radial direction, and a portion having a thread of the first threaded portion (5) is positioned closer to a tip side in a direction in which the branch portion (4) extends than a portion having a thread of the second threaded portion (6). rod.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a cleaning tool used for cleaning (cleaning) and a main body of the cleaning tool. [Background technology]

[0002] An example of such a cleaning tool is the deck brush described in Patent Document 1. This deck brush includes a holder that supports a brush body having bristles, and a handle that is connected to the upper end of the holder. The upper end of the holder is provided with a threaded cylinder with an internal thread, and the tip of the handle is provided with a screw shaft with an external thread that screws into the internal thread of the threaded cylinder, so that the holder and handle are detachably connected by screws.

[0003] The deck brush having the above-described configuration has a problem in that the joints become loose with use, causing rattle and requiring the screws to be retightened. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3035191 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention aims to provide a cleaning tool and a main body of the cleaning tool whose joints are less likely to come loose. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the cleaning tool of the present invention comprises a main body having a cleaning part, and a branch portion which is a long rod-like body and has a tip which is threadably coupled to the main body, The joint between the main body and the branch is made up of a first threaded portion provided on the radially inner side and a second threaded portion provided on the radially outer side.

[0007] According to this configuration, a double screw connection is achieved on the inside and outside in the radial direction.

[0008] In addition, in the cleaning tool of the present invention, the portion of the first screw portion having a thread may be located closer to the tip end in the direction in which the branch portion extends than the portion of the second screw portion having a thread.

[0009] According to the above configuration, the first screw portion and the second screw portion are positioned at different positions in the direction in which the branch portion extends, and therefore external forces are applied in different ways, thereby preventing the first screw portion and the second screw portion from loosening at the same time.

[0010] In addition, in the cleaning tool of the present invention, the first screw portion may include a body-side first screw thread formed on the body portion and a branch-side first screw thread formed on the tip of the branch portion to screw into the body-side first screw thread, the branch portion may include a tubular portion near the base end of the branch-side first screw thread, the second screw portion may include a body-side second screw thread formed radially outside the tubular portion and a branch-side second screw thread formed on the inner circumference of a tubular body provided on the base end side of the tip of the branch portion to screw into the body-side second screw thread, and the tubular portion may include a slit formed along the direction in which the branch portion extends to cross the body-side second screw thread.

[0011] According to the above configuration, by forming a second thread on the main body side on the outside of the tubular portion in which the slit is formed, when the second thread on the branch portion side formed on the inner circumference of the tubular body is screwed, the tubular portion can be pressed from the radial outside to tighten the second screw portion, thereby firmly joining the main body portion and the branch portion.

[0012] In the cleaning tool of the present invention, the branch portion side portion of the main body and a part of the connecting portion may be integrally formed from resin.

[0013] According to the above configuration, the branch portion side portion of the main body and a part of the connecting portion are made of resin and are integrally formed, which makes molding during manufacturing easy.

[0014] In the cleaning tool of the present invention, the cleaning part may have a brush part made up of a large number of bristles, and the arrangement of the bristles on the brush part may be at the same density in the part on the extension line of the branch part and in other parts.

[0015] According to the above configuration, the arrangement of the bristles of the brush portion is uniform, so that uneven sweeping is unlikely to occur.

[0016] In addition, the main body of the cleaning tool of the present invention is a main body that constitutes the cleaning tool by being screwed to the tip of a branch that is a long rod-shaped body, and in the screwed state, has a cleaning part located on the opposite side of the branch, and the connection part to the branch is composed of a first threaded part on the main body side that is provided radially inward and a second threaded part on the main body side that is provided radially outward. [Effects of the Invention]

[0017] According to the present invention, a cleaning tool and a cleaning tool main body can be provided in which the connection between the main body and the branch portions is less likely to loosen, since the screw connection is made double, both inside and outside in the radial direction. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. 2 is a cross-sectional view of the main part of the broom. DETAILED DESCRIPTION OF THE INVENTION

[0019] A broom as an example of a cleaning tool of the present invention will be described below with reference to the drawings. The following description will be based on the directions (left and right, front and back, up and down) shown in Figure 1.

[0020] As shown in Figure 1, broom 1 comprises a main body 3 having a cleaning part 2, and branch parts 4 which are long rods (for example, one meter or longer) and have their tips detachably screwed to main body 3. For example, when packaging and transporting a large number of brooms 1 (three or more), the branch parts 4 can be detached from main body 3 before packaging, thereby reducing the packaging volume.

[0021] As shown in Figure 3, the joint between the main body 3 and the branch 4 is made up of a first threaded portion 5 provided on the radially inner side and a second threaded portion 6 provided on the radially outer side. This provides a double screw joint on both the inner and outer sides in the radial direction. Therefore, the joint between the main body 3 and the branch 4 is less likely to loosen.

[0022] 3, the threaded portion of the first screw portion 5 is located further distally in the direction in which the branch portion 4 extends than the threaded portion of the second screw portion 6. As a result, the first screw portion 5 and the second screw portion 6 are located at different positions in the direction in which the branch portion 4 extends, and therefore external forces are applied to them in different ways, making it possible to prevent the first screw portion 5 and the second screw portion 6 from loosening at the same time.

[0023] As shown in FIG. 1, the main body 3 includes a cleaning unit 2 and a connecting unit 7 that holds the cleaning unit 2 and is detachably connected to the branch unit 4.

[0024] As shown in FIGS. 1 and 2, the cleaning unit 2 has a large number of brush members 21, each of which is made up of a bundle of numerous bristles 21A. The bristles 21A in the cleaning unit 2 are arranged at the same density on the extension lines of the branch members 4 as in other areas. In other words, the density of the numerous bristles 21A in each brush member 21 is the same in all brush members 21. This is because no connecting portions protrude from the bottom surface (lower surface) of the support member 22, allowing the numerous bristles 21A in each brush member 21 to be uniformly planted. This results in the uniform arrangement of the bristles 21A in each brush member 21, reducing the likelihood of uneven sweeping. The brush members 21 are planted on a plate-shaped support member 22, each having a long, narrow rectangular shape in a plan view. The cleaning unit 2 also includes a large number of brush members 21 and a support member 22 that supports the brush members 21.

[0025] As shown in FIG. 1 , the connection part 7 includes a mounting part 71, a plate-like attachment part with a long, narrow rectangular shape in a plan view, of approximately the same size, to which the support member 22 is attached by adhesive or welding, a cylindrical connection part main body 72 extending upward and diagonally rearward from approximately the center in the left-right direction of the top surface (upper surface) 71A of the attachment part 71, and a pair of left and right reinforcing ribs 73, 73 extending in the left-right direction and connecting the top surface 71A of the attachment part 71 to the left and right sides of the connection part main body 72. The long, narrow rectangular shape of the attachment part 71 ensures a sufficient contact area between the brush part 21 and the surface to be cleaned, making it less likely to leave a spot unswept than a typical broom. Furthermore, the angle θ (see FIG. 2 ) of the connection part main body 72 with respect to the horizontal plane is set to 45°. This also makes the angle of the branch part 4 connected to the connection part main body 72 45° with respect to the horizontal plane, allowing the operator to naturally grasp the branch part 4 while working.

[0026] As shown in Figure 3, the connection body 72 is formed in approximately the center in the radial direction and includes a cylindrical first tubular portion 72A having a body-side first screw portion 72N with a spiral body-side first screw thread 72n and a tapered portion 72T whose inner diameter gradually increases rearward from the rear end of the body-side first screw portion 72N, and a cylindrical second tubular portion 72B that extends further rearward from the rear end of the tapered portion 72T of the first tubular portion 72A with the same inner diameter and the same thickness.

[0027] 3, the second cylindrical portion 72B is provided with a main body-side second screw portion 72M having a main body-side second screw thread 72m formed on the radially outer side (outer peripheral surface) of the first screw portion 5 in a portion closer to the base end of the branch portion 4, and is provided with a plurality of slits 72S (see FIG. 2) in the circumferential direction (four in this embodiment, only two are shown in FIG. 2) formed along the extension direction of the branch portion 4 so as to cross the main body-side second screw thread 72m. The outer diameter of the second cylindrical portion 72B is slightly smaller than the outer diameter of the first cylindrical portion 72A.

[0028] As shown in Figure 2, the branch 4 has a tip 41 for screwing onto the main body 3, a rod-shaped branch main body 42 that extends rearward from the rear end of the tip 41 to form a handle, and a cylindrical tubular body 43 that is attached to the branch main body 42.

[0029] The tip portion 41 is made of a metal material such as aluminum (or iron or steel), and as shown in FIGS. 2 and 3 , includes a cylindrical portion 41A fitted to the tip portion 41 of the branch main body 42, a tapered portion 41B whose diameter decreases from the tip of the cylindrical portion 41A toward the tip, and a branch-side first screw portion 41N having a branch-side first screw thread 41n extending forward from the tip of the tapered portion 41B. The cylindrical portion 41A has a larger diameter than the branch-side first screw portion 41N. The main body-side first screw portion 72N and the branch-side first screw portion 41N that screws into it constitute the first screw portion 5. As shown in FIGS. 2 and 3 , the cylindrical portion 41A includes a pair of front and rear ring-shaped ribs 41a, 41b at both ends in the front-rear direction, and a plurality of connecting ribs 41c spaced circumferentially apart to connect the front and rear ribs 41a, 41b in the front-rear direction. The pair of front and rear ribs 41a, 41b protrude radially outward beyond the multiple connecting ribs 41c. Therefore, when the branch 4 is rotated to thread the first screw portion 5 (described later), only the pair of front and rear ribs 41a, 41b come into contact with the inner surface of the second cylindrical portion 72B, thereby reducing the rotational resistance of the branch 4.

[0030] Furthermore, while the main body side first screw portion 72N of the main body 3 is formed from resin, the branch side first screw portion 41N of the branch 4 is made from a metal with a different thermal expansion coefficient than resin, so the combination of the first screw portion 5 and the second screw portion 6 is less likely to loosen than if they were made from the same type of material.

[0031] The cylindrical body 43 is made of synthetic resin and includes a cylindrical base end 43A that is fitted to the branch main body 42 so as to be movable in the direction of extension of the branch 4, a tip end 43B extending from a portion near the front end of the base end 43A and having an outer diameter larger than that of the base end 43A, and a connecting portion 43C that connects the base end 43A and the tip end 43B. The tip end 43B is provided on its inner periphery with a branch-side second thread 43N that has a branch-side second thread 43n that threadably engages with the main body-side second thread 72m. The main body-side second thread 72M and the branch-side second thread 43N form the second thread 6. Furthermore, a plurality of anti-slip ribs 43R (see FIG. 2) extending in the axial direction (a direction perpendicular to the rotation direction of the cylindrical body 43) are formed at intervals around the periphery of the cylindrical body 43.

[0032] As shown in Fig. 3, the second cylindrical portion 72B, which is the branch portion side portion of the main body 3, and the first cylindrical portion 72A, which is the connecting portion, are integrally formed from resin. By forming them integrally from resin in this manner, molding during manufacturing is easy. In this embodiment, the attachment portion 71, connection portion main body 72, and reinforcing rib 73 that constitute the connection portion 7 are integrally formed from resin (see Fig. 2).

[0033] When threading the main body 3 and the branch 4 together, first, the branch 4 is rotated with the cylindrical body 43 separated from the second cylindrical portion 72B, thereby threading the branch-side first threaded portion 41N of the branch 4 into the main body-side first threaded portion 72N of the main body 3. During this threading, the rib 41a at the front end of the branch 4 abuts against the tapered portion 72T (see FIG. 3) of the connecting portion 7, thereby completing the threading of the first threaded portion 5. The abutment of the rib 41a against the tapered portion 72T of the connecting portion 7 stabilizes the threaded state between the main body-side first threaded portion 72N and the branch-side first threaded portion 41N. Next, the cylindrical body 43 that is sheathing the branch 4 is moved toward the second cylindrical portion 72B of the connecting portion 7 and then rotated, thereby threading the branch-side second screw portion 43N formed on the cylindrical body 43 into the main body-side second screw portion 72M formed on the second cylindrical portion 72B. During this threading, the front end surface 43c (see FIG. 3) of the base end portion 43A of the cylindrical body 43 comes into contact with the rear end of the cylindrical portion 41A of the branch 4, thereby completing the threading of the second screw portion 6.

[0034] The present invention can also be applied to the main body of a cleaning tool. The main body 3 of the cleaning tool constitutes the cleaning tool by being screwed to the tip of a branch 4, which is a long rod-shaped body, and in the screwed state, has the cleaning part 2 on the opposite side of the branch 4, and the connection part to the branch 4 is composed of the first main body threaded part 72N provided on the radially inner side and the second main body threaded part 72M provided on the radially outer side.

[0035] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0036] In the above embodiment, a broom is shown as the cleaning tool, but it may also be a mop, a deck brush, etc. In this case, the support member 22 may be configured to be detachable from the attachment part 71, and the main body part 3 may be replaced depending on the purpose of cleaning.

[0037] In the above embodiment, the cylindrical body 43 is provided on the branch main body 42 so as to be movable in the direction in which the branch 4 extends, but the cylindrical body 43 may be fixed to the branch main body 42. In this case, the fixed position of the cylindrical body 43 relative to the branch main body 42 is set so that the first threaded portion 5 and the second threaded portion 6 start and end screwing simultaneously. Also, the first threaded portion 5 and the second threaded portion 6 may have a reverse thread relationship. This makes it even less likely to loosen. [Explanation of symbols]

[0038] 1...broom, 2...cleaning part, 3...main body, 4...branch part, 5...first screw part, 6...second screw part, 7...connection part, 21...brush part, 21A...bristle body, 22...support member, 41...tip part, 41A...cylindrical part, 41B...tapered part, 41N...first screw part on branch part side, 41a, 41b, 41c...rib, 41n...first screw thread on branch part side, 42...branch part main body, 43...cylindrical body, 43A...base end part, 43B...tip part, 43C...connecting portion, 43N...branch portion side second screw portion, 43n...branch portion side second screw thread, 71...mounting portion, 71A...top surface (upper surface), 72...connecting portion main body, 72A...first cylindrical portion, 72B...second cylindrical portion, 72M...main body portion side second screw portion, 72N...main body portion side first screw portion, 72S...slit, 72T...tapered portion, 72m...main body portion side second screw thread, 72n...main body portion side first screw thread, 73...reinforcing rib, θ...angle

Claims

1. The cleaning device includes a main body having a cleaning part, and a branch having a long rod-like body and a tip that is threadably coupled to the main body, The cleaning tool, wherein the connecting portion between the main body and the branch portion is configured by a first screw portion provided on the radially inner side and a second screw portion provided on the radially outer side.

2. The cleaning tool according to claim 1 , wherein the threaded portion of the first screw portion is located closer to the tip end than the threaded portion of the second screw portion in the direction in which the branch portion extends.

3. the first screw portion includes a main body-side first thread formed on the main body portion, and a branch-side first thread formed on a tip end portion of the branch portion to be threadedly engaged with the main body-side first thread, the branch portion includes a cylindrical portion at a portion of the branch portion-side first thread portion near the base end side, the second screw portion includes a main body side second thread formed on the radially outer side of the cylindrical portion, and a branch side second thread formed on the inner periphery of the cylindrical body provided on the base end side of the tip end of the branch portion so as to be threaded onto the main body side second thread, The cleaning tool according to claim 2 , wherein the cylindrical portion has a slit formed along the direction in which the branch portion extends so as to cross the second main body-side screw thread.

4. The cleaning tool according to claim 1 , wherein a portion of the main body on the branch portion side and a part of the connecting portion are made of resin and are integrally formed.

5. The cleaning tool according to any one of claims 1 to 4, wherein the cleaning part has a brush part made up of a large number of bristles, and the bristles of the brush part are arranged at the same density in the part on the extension line of the branch part and in other parts.

6. A main body that constitutes a cleaning tool by being screwed to the tip of a branch that is a long rod-shaped body, In the screw-coupled state, a cleaning part is provided on the opposite side of the branch part, The main body of the cleaning tool has a coupling portion for the branch portion, the coupling portion being composed of a first main body side screw portion provided radially inward and a second main body side screw portion provided radially outward.

Images