JP6473584B2 - Pipe material connection structure and cleaning tool using the connection structure - Google Patents

Description

  The present invention relates to a connection structure for connecting pipe materials to each other, and a cleaning tool using the connection structure.

  Conventionally, a cleaning tool for performing floor cleaning or the like has a relatively long handle. Such a handle of the cleaning tool may be constituted by a plurality of pipe members that can be connected to each other in consideration of convenience such as storage and storage (see, for example, Patent Document 1). According to such a configuration, if the pipe material is disassembled when not in use, a compact housing becomes possible.

  In the cleaning tool disclosed in Patent Document 1, as shown in FIGS. 1 to 5 of the same document, a plurality of pipe members constituting a handle are connected using a connector (1). This connector is provided with a cylindrical member (3) and a middle shaft member (4). The cylindrical member (joint body) covers the connecting portion of the pipe material. The middle shaft member (connecting member) has an outer diameter that is substantially the same as the inner diameter of the pipe material. The cylindrical member is provided with a plurality of holding pieces (10) so as to be arranged at intervals in the circumferential direction. One end (fixed end) of the holding piece is integrated with the cylindrical member (3) and extends along the longitudinal direction of the cylindrical member. A locking claw (14) is provided on the other end (open end) of the holding piece. The locking claw protrudes radially inward of the cylindrical member through a hole formed in the cylindrical member. The holding piece can be bent so that the open end side is close to or away from the axis of the cylindrical member, and the locking claw is close to the axis of the cylindrical member as the holding piece is bent. Can be separated. And the attachment piece (10) adjacent to the circumferential direction of a cylindrical member is provided so that the extension direction extended toward the open end from the fixed end may differ alternately. Therefore, there are a locking piece (14) provided at the open end of the holding piece, one on the one end side of the cylindrical member and one on the other end side of the cylindrical member.

  An engagement hole (16) through which the locking piece can be inserted is formed at an appropriate position of the connecting portion of the pipe material (2). Further, the central shaft member (4) is also formed with an insertion hole (5) through which the locking piece can be inserted. When connecting pipe materials using the connector having the above configuration, one end of the central shaft member (4) is inserted into the pipe material (2), and the engagement hole of the pipe material and the insertion hole of the central shaft member are made to coincide. Next, the cylindrical member is externally fitted so as to cover the central shaft member and the pipe material. And the locking piece (14) in the one end side of a cylindrical member is engage | inserted in the engagement hole of a pipe material, and the penetration hole of a center shaft member. Next, another pipe material (2) is inserted into the space formed between the central shaft member and the cylindrical member. And the engagement hole of a pipe material is made to correspond with the penetration hole of a center shaft member. Thereby, the latching claw (14) on the other end side of the cylindrical member is fitted into the engagement hole of the pipe member and the insertion hole of the central shaft member. In this way, the plurality of pipe members (2) are connected by the central shaft member and the cylindrical member.

  According to the above configuration, the connected pipes are prevented from rotating and coming out. When disassembling the pipe material in the connected state, the open end side of the holding piece is turned up with a tool such as a screwdriver. And if the latching claw (14) is retracted from the insertion hole (5) of the central shaft member (4) and the engagement hole (16) of the pipe material (2), the pipe material (2) can be pulled out.

  However, in the above conventional pipe connection structure, the structure of the connector (cylindrical member) is relatively complicated, leading to an increase in manufacturing cost. Further, when disassembling the pipe material, it is necessary to use a tool or the like, and there is room for improvement in terms of usability.

Japanese Patent No. 4054508

  The present invention has been conceived under such circumstances, and is a pipe material connection structure suitable for improving usability while simplifying the structure, and the connection structure. It is an object to provide a used cleaning tool.

  In order to solve the above problems, the present invention takes the following technical means.

  The pipe material connection structure provided by the first aspect of the present invention is a pipe material connection comprising: a pipe material having a connection end portion; and a joint body having a receiving portion fitted to the connection end portion. It is a structure, The outer surface of the said connection end part and the inner surface of the said receiving part are made into the polygonal cross-section corresponding to each other, and it is characterized by being able to fit.

  In a preferred embodiment, the outer surface of the connection end portion and the inner surface of the receiving portion have a regular polygonal cross section.

  In a preferred embodiment, the pipe material is composed of a core tube having a uniform cross section and extending in a certain direction, and a resin material covering the outer surface of the core tube, and corresponds to at least the connection end. A resin coating portion having an outer surface of the portion formed in a polygonal cross section.

  In a preferred embodiment, the core tube has a cylindrical shape.

  In a preferred embodiment, a projection projecting radially inward is formed at the axially inner end of the receiving portion in the joint body.

  In a preferred embodiment, the pipe body further includes an additional pipe member having a connection end portion, and the joint body includes the two receiving portions provided on both sides in the axial direction with the protrusion interposed therebetween. The connection end of the pipe material is inserted into one of the receiving portions, and the connection end of the additional pipe material is inserted into the other.

  In a preferred embodiment, a through hole penetrating in the radial direction is formed in the vicinity of the axially inner end of the receiving portion.

  In a preferred embodiment, the apparatus further comprises a connection member inserted into the connection end and fixed to the pipe member, and an additional pipe member having an end portion fitted and connected to the connection member. The connecting member has a cylindrical portion that extends from the tip of the connecting end portion along the axial direction of the pipe material and has an outer diameter that is substantially the same as the inner diameter of the connecting end portion. Has a non-arc-shaped cross section, and is provided with a pressure contact portion that can be pressure contacted with the end portion of the additional pipe material.

  In a preferred embodiment, the apparatus further includes a connection member inserted into the connection end and fixed to the pipe material, and the connection member is formed from the tip of the connection end of the pipe material. The cylindrical portion has a cylindrical portion that extends along the axial direction and has an outer diameter that is substantially the same as the inner diameter of the connection end portion. A pressure contact portion that can be pressure contacted with the connection end portion is provided.

  In a preferred embodiment, the pressure contact portion is formed by crushing.

  The cleaning tool provided by the second aspect of the present invention includes a handle configured using the pipe material connection structure provided by the first aspect of the present invention, and a cleaning connected to an end of the handle. And a head.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a disassembled perspective view which shows an example of the connection structure of the pipe material which concerns on this invention. It is a longitudinal section of the connection structure of the pipe material shown in FIG. It is an expanded sectional view which follows the III-III line of FIG. FIG. 4 is an enlarged end view taken along line IV-IV in FIG. 2. FIG. 5 is an enlarged end view taken along line VV in FIG. 2. It is a longitudinal cross-sectional view of the state which mounted | wore with the pipe material the joint body of the connection structure of the pipe material shown in FIG. It is a longitudinal cross-sectional view showing the connection state of the connection structure of the pipe material shown in FIG. It is sectional drawing similar to FIG. 7 which shows the other example of the connection structure of the pipe material which concerns on this invention. It is a perspective view which shows an example of the cleaning tool using the connection structure of the pipe material which concerns on this invention. It is a disassembled perspective view of the connection structure of the pipe material which concerns on the reference example of this invention. It is a longitudinal cross-sectional view of the connection structure of the pipe material shown in FIG. It is a longitudinal cross-sectional view showing the connection state of the connection structure of the pipe material shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1-7 has shown the connection structure of the pipe material which concerns on embodiment of this invention. As shown in FIGS. 1 to 3, the pipe material connection structure A <b> 1 according to the present embodiment includes two pipe materials 1 </ b> A and 1 </ b> B, a joint body 3, and a connection member 4. Yes.

  The pipe member 1A has a connecting end 10A at least at one end in the longitudinal direction. The connecting end 10A is a part to which the joint body 3 is fitted. In this embodiment, as shown in FIGS. 2 and 3, the pipe material 1 </ b> A includes a core tube 21 and a resin coating portion 22 that covers the core tube 21.

  The core tube 21 is a cylindrical pipe having a uniform cross section and extending in a certain direction, and is made of a metal such as steel. The resin coating portion 22 is made of a synthetic resin material such as polyethylene, and covers the entire outer surface of the core tube 21. The outer surface of at least the portion corresponding to the connecting end portion 10A of the resin coating portion 22 is formed in a polygonal cross section. Preferably, the outer surface of the connection end 10A has a regular polygonal cross section. Moreover, it is preferable that the number of corners of the regular polygonal shape is 6 or more. In the present embodiment, the resin coating portion 22 has a substantially equivalent outer surface of the portion corresponding to the connection end portion 10A and the entire portion connected to the connection end portion 10A, and the outer surface of the pipe material 1A (the connection end portion 10A and this). The outer surface of the connecting portion has a regular tetragonal cross section. If an example of the dimension of each part of 1 A of pipe materials is given, the outer diameter of the core pipe 21 will be about 21 mm, and the internal diameter of the core pipe 21 will be about 20 mm. In addition, the dimension L1 (see FIG. 3) between the surfaces located on the opposite side of the core tube 21 (pipe material 1A) in the resin coating portion 22 is about 22 mm.

  In this embodiment, the connection member 4 is attached to one pipe material 1A. The connecting member 4 is made of, for example, a steel cylindrical pipe. The outer diameter of the connecting member 4 is substantially the same as the inner diameter of the pipe material 1A (in this embodiment, the inner diameter of the core tube 21). As shown in FIGS. 1 and 2, the connecting member 4 is inserted at least into the connecting end 10A of the pipe material 1A, and is fixed to the pipe material 1A by appropriate means such as caulking. In the present embodiment, the connection member 4 is inserted across the connection end portion 10A of the pipe member 1A and a portion connected to the connection end portion 10A.

  In a state where the connecting member 4 is fixed to the pipe member 1A, the connecting member 4 has a cylindrical portion 40 that protrudes from the tip of the connecting end portion 10A. The cylindrical portion 40 extends along the axial direction of the pipe material 1A, and is a portion on which a pipe material 1B described later is fitted. The outer diameter of the cylindrical portion 40 is substantially the same as the inner diameter of the pipe material 1A.

  The cylindrical portion 40 is provided with a pressure contact portion 41. As shown in FIG. 4, the pressure contact portion 41 has a non-circular cross section, and includes a portion where the distance from the axial center of the cylindrical portion 40 is larger than the radius of the cylindrical portion 40. The pressure contact part 41 is formed by crushing, for example. The shape and dimensions of the pressure contact portion 41 are managed so as to be within a predetermined range. In FIG. 4, a cross-sectional outer shape (circular shape) of a portion other than the pressure contact portion 41 of the cylindrical portion 40 is represented by a broken line. When the pipe material 1B is fitted on the cylindrical portion 40, the pressure contact portion 41 is in pressure contact with the inner surface of the pipe material 1B (core tube 21). As an example of the dimensions of the connecting member 4, the outer diameter is about 20 mm, the inner diameter is about 19 mm, and the axial length is about 100 mm. Moreover, the axial length of the insertion part (the part which overlaps with the pipe material 1A in radial direction) of the connecting member 4 in the pipe material 1A is about 50 mm, and the axial direction length of the cylindrical portion 40 is about 50 mm. is there.

  The other pipe material 1 </ b> B includes a core tube 21 and a resin coating portion 22. The specific configuration and dimensions of the pipe material 1B (the core tube 21 and the resin coating portion 22) are substantially the same as those of the pipe material 1A. On the other hand, the pipe material 1B is different from the pipe material 1A described above in that the connection member 4 is not attached. The end portion (connection end portion 10B) of the pipe material 1B is a portion to which the joint body 3 is fitted.

  As shown in FIGS. 1 and 2, the joint body 3 has a tubular shape as a whole, and includes two receiving portions 31 </ b> A and 31 </ b> B. The receiving portions 31A and 31B have openings at both ends in the axial direction, and are portions that are externally fitted to the connecting end portions 10A and 10B of the pipe members 1A and 1B.

  A protrusion 32 is formed at the axially inner ends of the receiving portions 31A and 31B. The protrusion 32 protrudes inward in the radial direction. The two receiving portions 31 </ b> A and 31 </ b> B are arranged symmetrically with respect to the protrusion 32.

  The inner surface 310A (310B) of the receiving portion 31A (31B) has a polygonal cross section corresponding to the outer surface of the connecting end portion 10A (10B). As shown in FIG. 5, in the present embodiment, the inner surface 310A (310B) of the receiving portion 31A (31B) has a regular tetragonal cross section. Note that the dimensions of the inner surface 310A (310B) of the receiving portion 31A (31B) are slightly larger or substantially the same as the dimensions of the outer surface of the connection end 10A (10B).

  The receiving portions 31A and 31B are provided with through holes 33A and 33B. The through holes 33A and 33B are located in the vicinity of the rear end in the axial direction of the receiving portions 31A and 31B and penetrate in the radial direction. In the present embodiment, the through holes 33 </ b> A and 33 </ b> B are adjacent to the protrusion 32.

  In the present embodiment, convex portions 34A and 34B projecting radially inward are formed on the inner surfaces 310A and 310B of the receiving portions 31A and 31B. A plurality of the convex portions 34 </ b> A and 34 </ b> B are provided at intervals in the circumferential direction of the joint body 3.

  The joint body 3 having the above-described configuration is made of a synthetic resin material having a predetermined strength such as polyacetal.

  Next, the connection procedure of the pipe materials 1A and 1B and the operation of the pipe material connection structure A1 will be described.

  First, as shown in FIG. 6, the receiving portion 31 </ b> A of the joint body 3 is externally fitted to the connection end portion 10 </ b> A of the pipe material 1 </ b> A. Here, the joint body 3 is pushed into the pipe material 1A side until the tip of the pipe material 1A contacts the protrusion 32 of the joint body 3. A through hole 33A is provided in the vicinity of the axially inner end of the receiving portion 31A. For this reason, it is confirmed by visually observing the outer surface of the pipe material 1A (connection end portion 10A) through the through hole 33A that the receiving portion 31A is appropriately fitted to the pipe material 1A (connection end portion 10A). it can. At this time, the connection member 4 (cylindrical portion 40) protrudes from the opening of the receiving portion 31B.

  Next, the pipe material 1B is attached. Here, as shown in FIG. 7, the pipe material 1B (connection end portion 10B) is inserted into the space formed between the receiving portion 31B and the connection member 4, and the tip of the pipe material 1B (connection end portion 10B). The pipe material 1B is pushed into the joint body 3 side until it comes into contact with the protrusion 32 of the joint body 3. A through hole 33B is provided in the vicinity of the rear end in the axial direction of the receiving portion 31B. For this reason, it can be confirmed by visually observing the outer surface of the pipe material 1B (connection end portion 10B) through the through hole 33B that the pipe material 1B (connection end portion 10B) is properly inserted into the receiving portion 31B. . At this time, the pipe member 1 </ b> B (connection end portion 10 </ b> B) is externally fitted to the cylindrical portion 40 of the connection member 4. In the present embodiment, the pipe materials 1A and 1B can be connected through the joint body 3 in this way.

  The outer surfaces of the connecting ends 10A and 10B of the pipe members 1A and 1B and the inner surfaces 310A and 310B of the receiving portions 31A and 31B are polygonal in cross section, and can be fitted to each other. This prevents relative rotation in the circumferential direction between the connection end portions 10A, 10B and the receiving portions 31A, 31B in a state where the connection end portions 10A, 10B and the receiving portions 31A, 31B are coupled.

  In the present embodiment, the outer surfaces of the connection end portions 10A and 10B and the inner surfaces 310A and 310B of the receiving portions 31A and 31B are regular polygonal sections, and are rotationally symmetric around the axis. According to such a configuration, the connecting end portions 10A and 10B and the receiving portions 31A and 31B can be easily arranged without strictly aligning the connecting end portions 10A and 10B and the receiving portions 31A and 31B in the circumferential direction. Can be fitted.

  The pipe material 1 </ b> A (1 </ b> B) includes a core tube 21 formed of a cylindrical pipe and a resin coating 22 that covers the outer surface of the core tube 21. According to such a configuration, it is possible to easily form the pipe material 1A (1B) whose outer surface has a polygonal cross section.

  In this embodiment, the number of corners of the regular polygonal shape formed by the outer surfaces of the connecting end portions 10A and 10B and the inner surfaces of the receiving portions 31A and 31B is 14, which is relatively large. According to such a configuration, it is possible to suppress variations in the thickness of the connection end portions 10A and 10B (resin coating portion 22) as compared with the case where the number of corners of the regular polygonal shape is relatively small. When the variation in the thickness is suppressed, in the configuration of the present embodiment in which the outer surface of the cylindrical pipe (core tube 21) is covered with the resin coating portion 22, the amount of resin material used to form the resin coating portion 22 Can be reduced.

  Note that as the number of regular polygons increases, the shape of the regular polygon itself approaches a circle. For this reason, in the case of this embodiment, if the number of corners of the regular polygonal shape formed by the outer surfaces of the connecting end portions 10A and 10B and the inner surfaces 310A and 310B of the receiving portions 31A and 31B becomes too large, the connecting end portions 10A and 10B There is a possibility that relative rotation with the receiving portions 31A and 31B in the circumferential direction is allowed. In consideration of such circumstances, the outer surfaces of the connecting end portions 10A and 10B and the inner surfaces 310A and 310B of the receiving portions 31A and 31B are formed, although depending on the radial dimensions of the connecting end portions 10A and 10B and the receiving portions 31A and 31B. The number of corners of the regular polygonal shape is preferably 6 or more and 20 or less.

  A connecting member 4 is inserted into and fixed to the pipe material 1A, and this connecting member 4 has a cylindrical portion 40 protruding from the tip of the pipe material 1A (connecting end portion 10A). The cylindrical portion 40 is provided with a pressure contact portion 41. When the pipe material 1B (connection end portion 10B) is externally fitted to the cylindrical portion 40, the pressure contact portion 41 becomes the pipe material 1B (connection end portion). 10B). This prevents the pipe materials 1A and 1B from coming out of each other when the pipe materials 1A and 1B are connected. As a result, the pipe materials 1A and 1B are also prevented from coming out from the joint body 3 (receiving portions 31A and 31B).

  Convex portions 34A and 34B projecting radially inward are formed on the inner surfaces 310A and 310B of the receiving portions 31A and 31B. When the receiving portions 31A, 31B and the connection end portions 10A, 10B are fitted, the convex portions 34A, 34B bite into the outer surfaces of the connection end portions 10A, 10B (resin coating portion 22), and the connection end portions 10A, 10B (pipe material) 1A, 1B) can be prevented from coming out from the receiving portions 31A, 31B (joint body 3).

  When disassembling the pipe materials 1A and 1B in the connected state, the pipe materials 1A and 1B are pulled with a predetermined force or more in a direction away from each other. Thereby, the pipe material 1B can be removed from the pipe material 1A (connection member 4). Subsequently, the joint body 3 can be pulled away from the pipe material 1A.

  FIG. 8 shows a modification of the above-described pipe material connection structure A1. In the pipe material connection structure A <b> 1 ′ shown in the figure, the cylindrical portion 40 of the connecting member 4 is provided with two press contact portions 41. These pressure contact parts 41 are located on the opposite side across the axis of the cylindrical portion 40, and the positions in the direction along the axis coincide with each other. Thus, according to the structure provided with the some press-contact part 41, the improvement of the pull-out prevention effect between pipe material 1A, 1B can be anticipated. In addition, when providing the some press-contact part 41 in the cylindrical part 40, the number and arrangement | positioning of the press-contact part 41 can be variously selected. For example, the plurality of press contact portions 41 may be arranged at different positions in the direction along the axial center of the cylindrical portion 40.

  FIG. 9 is a perspective view showing a cleaning tool configured using the pipe material connection structure A1 described above. The cleaning tool B shown in FIG. 9 shows a state where a plurality of pipe members 1A (1B) are assembled together. In the cleaning tool B, a relatively long handle S is formed by connecting three pipe members 1A (1B). A cleaning head H is connected to the end of the handle S so as to be relatively rotatable. The cleaning tool B is used for, for example, attaching a wiping sheet to the cleaning head H to perform floor cleaning, and a holding unit for holding the wiping sheet is provided at an appropriate position of the cleaning head H. .

  10 to 12 show a pipe material connection structure according to a reference example of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment, and description thereof will be omitted as appropriate.

  As shown in FIGS. 10 and 11, the pipe material connection structure A <b> 2 of this reference example is configured to include two pipe materials 1 </ b> A and 1 </ b> B and a connection member 4. Specific configurations of the pipe members 1A and 1B and the connection member 4 are the same as those of the pipe members 1A and 1B and the connection member 4 in the pipe material connection structure A1 of the above embodiment. On the other hand, in this reference example, the joint body 3 of the above embodiment is not provided.

  In this reference example, when the pipe members 1A and 1B are connected, the pipe member 1B is externally fitted to the connecting member 4 (cylindrical portion 40) at the tip of the pipe member 1A as shown in FIG. Thereby, pipe material 1A, 1B can be connected.

  A connecting member 4 is inserted into and fixed to the pipe material 1A, and this connecting member 4 has a cylindrical portion 40 protruding from the tip of the pipe material 1A (connecting end portion 10A). The cylindrical portion 40 is provided with a pressure contact portion 41. When the pipe material 1B (connection end portion 10B) is externally fitted to the cylindrical portion 40, the pressure contact portion 41 becomes the pipe material 1B (connection end portion). 10B). This prevents the pipe materials 1A and 1B from coming out of each other when the pipe materials 1A and 1B are connected.

  While specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. The pipe material connection structure according to the present invention and the specific shape and material of each part of the cleaning tool using the connection structure are not limited to the above embodiment.

  In the above embodiment, the case where the outer surface of the connection end 10A (10B) and the inner surfaces of the receiving portions 31A and 31B have a regular tetragonal cross section has been described as an example, but the connection end 10A (10B) The cross-sectional shapes of the outer surface and the inner surfaces of the receiving portions 31A and 31B are not limited to this.

A1, A1 'Pipe material connection structure B Cleaning tool 1A Pipe material 1B Pipe material (additional pipe material)
10A Connection end 10B Connection end (end)
21 Core tube 22 Resin coating 3 Joint body 31A, 31B Receiving part 310A, 310B Inner surface (inner surface of receiving part)
32 Protrusions 33A, 33B Through-holes 34A, 34B Convex part 4 Connection member 40 Cylindrical part 41 Pressure contact part

Claims (10)

A pipe material having a connection end portion, and a joint body having a receiving portion fitted to the connection end portion, and a pipe material connection structure comprising:
The outer surface of the connection end portion and the inner surface of the receiving portion have a polygonal cross section corresponding to each other, and can be fitted.
On the inner surface of the receiving portion, a convex portion protruding radially inward is formed ,
A pipe material connection structure, characterized in that, at the axially inner end of the receiving portion in the joint body, a protrusion is formed that protrudes inward in the radial direction and that the tip of the connection end can come into contact with. .   The pipe material connection structure according to claim 1, wherein an outer surface of the connection end portion and an inner surface of the receiving portion have a regular polygonal cross section.   The pipe material has a uniform cross section, and is constituted by a core tube extending in a certain direction and a resin material covering the outer surface of the core tube, and at least an outer surface of a portion corresponding to the connection end is polygonal in cross section The pipe material connection structure according to claim 1, further comprising: a resin coating portion formed on the pipe.   The pipe core connection structure according to claim 3, wherein the core tube has a cylindrical shape. Further comprising an additional pipe material having a connecting end,
The joint body has two receiving portions provided on both sides in the axial direction across the protrusion,
The pipe member according to claim 1 , wherein the connection end of the pipe member is inserted into one of the two receiving portions, and the connection end of the additional pipe member is inserted into the other. Connected structure. The pipe material connection structure according to claim 5, wherein a through-hole penetrating in the radial direction is formed in the vicinity of the axially inner end of the receiving portion. A connection member inserted into the connection end and fixed to the pipe member; and an additional pipe member having an end portion externally connected to the connection member.
The connection member has a cylindrical portion that extends from the tip of the connection end along the axial direction of the pipe material and has an outer diameter that is substantially the same as the inner diameter of the connection end.
The aforementioned cylindrical portion, is cross-section a non-circular arc shape, the pressure contact portion capable of the end and pressure of said additional pipe is provided, of the pipe according to any one of claims 1 to 4 Connected structure. It further comprises a connection member inserted into the connection end and fixed to the pipe material,
The connection member has a cylindrical portion that extends along the axial direction of the pipe material from the tip of the connection end portion of the pipe material, and has an outer diameter that is substantially the same diameter as the inner diameter of the connection end portion,
The pipe member connection structure according to claim 5 or 6 , wherein the cylindrical portion has a non-arc-shaped cross section, and is provided with a pressure contact portion capable of being pressure contacted with the connection end portion of the additional pipe material. . The pipe material connection structure according to claim 7 or 8 , wherein the press-contact portion is formed by crushing. When configured pattern using a coupling structure of the pipe according to any one of claims 1 to 9, characterized in that it and a cleaning head connected to an end of the handle, the cleaning tool.

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