JP2005282778A - Rod-like body connecting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting structure having improved durability by preventing damage to an engagement protrusion 5 due to the mutual rotation of rod-like bodies when used, wherein a fitting hole (a) having one end opening to the connection side end face of one rod-like body 2 is fitted with the connection side end of the other rod-like body 3 and the engagement protrusion 5 protruded from the inner face of a fixed cylinder 4 fitted to the outer face of a fitted portion is put in engagement with engagement holes 6, 7 provided overlapping each other in the connection side ends of the rod-like bodies to integrally connect the rod-like bodies to each other in the axial direction. <P>SOLUTION: A non-columnar engagement protruded portion 8 is provided in one rod-like body 2 and an engagement recessed portion 9 is provided in the other rod-like body 3. The engagement protruded portion 8 is fitted to the engagement recessed portion 9 when the rod-like bodies are integrally connected to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connecting structure of rod-shaped bodies.

  In order to store a handle of a cleaning tool such as a mop in a compact manner, there is a structure that can be separated at one or a plurality of locations, and a connection structure of pipes constituting these handles has been proposed (for example, Patent Document 1). And Patent Document 2).

The connecting structure of these pipes is to insert the male side end of one cylindrical pipe into the female side end of the other cylindrical pipe, and match the male side projection engagement hole and the female side projection engagement hole, A sleeve member with an engagement protrusion protruding from the inner peripheral surface is attached from the outside, and the pair of cylindrical pipes are connected and integrated in the axial direction by engaging the engagement protrusion with the engagement protrusion. It is excellent in that it can be stored in a compact state and is easy to assemble and disassemble.
JP 2002-147421 A JP 2002-130226 A

  In the connection structure of the rod-shaped bodies such as this kind of pipe, the present invention reliably prevents the mutual rotation of the rod-shaped bodies at the time of use, eliminates the burden on the engaging projections, and causes problems such as breakage. The present invention proposes an excellent connection structure of rod-shaped bodies. In addition, the present invention proposes a connecting structure of rod-shaped bodies that can be easily manufactured using this type of connecting structure.

  In order to solve the above problem, the connecting structure of the rod-shaped body of the first aspect of the present invention inserts the connecting-side end portion of the other rod-shaped body into the hole a having one end opened in the connecting-side end surface of one rod-shaped body. The engagement protrusions, which are fitted to the outer surface of the insertion site and protruded from the inner surface of the fixed cylinder provided with the split groove, are engaged with the engagement holes provided at the connecting side end portions of the respective rod-shaped bodies to A connecting structure of rod-shaped bodies connected in the axial direction, wherein a non-cylindrical engaging protrusion is provided in the connecting-side end of one rod-shaped body, and the engagement is performed by opening the connecting-side end face of the other rod-shaped body. An engaging recess is provided for engaging the protrusion so that the protrusion cannot rotate, and the connecting protrusion is inserted into the engaging recess when the two rod-like bodies are connected. .

  Further, the connecting structure of the rod-like bodies of the invention of claim 2 is such that the connecting-side end portion of the other rod-like body is inserted into the hole a low opened in the connecting-side end surface of one rod-like body and is fitted to the outer surface of the insertion site. An engagement protrusion projecting from the inner surface of a fixed cylinder having a split groove is engaged with each engagement hole provided at a connection side end of each rod-shaped body to connect both rod-shaped bodies in the axial direction. An engagement structure in which the hole a of one rod-shaped body is formed in a non-cylindrical space-shaped engagement recess, and the connection-side end of the other rod-shaped body is non-rotatably engaged with the engagement recess. A connecting side end of the other rod-shaped body is formed on an engaging protrusion that is non-rotatably engaged with the engaging recess, and when the both rod-shaped bodies are connected, the engaging protrusion is A connecting structure of rod-shaped bodies mounted in the joint recess.

  According to a third aspect of the present invention, there is provided the connecting structure of the rod-shaped bodies, wherein the engaging protrusion is formed by an engaging protrusion-forming member A fitted and fixed in one pipe-shaped body. The connecting structure for rod-shaped bodies according to claim 1, wherein A includes a fixed base portion having an outer peripheral edge fixed in one rod-shaped body and the engaging protrusions.

  Further, the connecting structure of the rod-shaped bodies of the invention of claim 4 is formed by an engaging recess forming member B in which the engaging recess is fixed in the other rod-shaped body in the form of a pipe, and the engaging recess forming member B is The rod-shaped body connecting structure according to claim 1, wherein an outer peripheral edge is fixed in the rod-shaped body and the engaging recess is provided at the center.

  The connecting structure of the rod-shaped bodies of the present invention prevents mutual rotation due to the presence of the engaging protrusions 8 and the engaging recesses 9 even if a force is applied to rotate the rod-shaped bodies mutually after connecting. An excessive load is not applied to the engaging protrusion 5 that fixes the both, and there is no possibility of causing damage.

  Further, in the invention described in claim 2, since the necessary configuration of each member can be formed simply by fixing the engaging protrusion forming member A and the engaging recess forming member B to a known connecting structure, the manufacturing is easy. There is an advantage obtained at low cost.

  Further, the invention described in claim 3 also prevents the mutual rotation due to the presence of the engagement protrusion 8A and the engagement recess 9A even if a force is applied to rotate the rod-shaped bodies after connection. As a result, an excessive load is not applied to the engaging protrusion 5 that fixes the both, and there is no possibility of causing damage.

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

  As shown in the drawings, the connecting structure of the rod-shaped bodies in the present invention is a connecting structure in which a pair of rod-shaped bodies can be connected to each other at their connecting ends and can be removed. An engagement protrusion 5 that protrudes from the inner surface of the fixed cylinder 4 that is fitted to the outer surface of the fitting portion is fitted into the hole a having one end opened to the connection side end surface, and the other end of the rod-like body 3 is fitted to the outer surface of the fitting portion. This is a connecting structure of rod-shaped bodies that are engaged with engaging holes 6 and 7 provided so as to overlap each other on the connection side end of each rod-shaped body, and the rod-shaped bodies are coupled and integrated in the axial direction.

  Each rod-shaped body is formed of synthetic resin, metal, etc., and may be in the form of a hollow pipe as in the illustrated example, or may be in the form of a solid rod. In addition, when the rod-shaped body is in the form of a pipe, the hole a can utilize a part of its hollow portion, and in the case of a solid rod-shaped body, a hole having a predetermined shape is provided in that portion. Further, the other rod-shaped body 3 is configured such that the connecting side end portion can be fitted into the hole a.

  The engagement hole 6 of the one rod-like body 2 (hereinafter referred to as the outer engagement hole 6 for convenience) is formed in the cylindrical wall portion of the hole a forming portion, and the engagement of the other rod-like body 3 is also made. A joint hole 7 (hereinafter referred to as an inner engagement hole 7 for convenience) is provided at a position overlapping with the outer engagement hole 6 when fitted into one rod-like body 2, and in this state, the fixed cylinder 4 is engaged. The protrusion 5 is configured to be fitted to both. The outer engagement hole 6 may be a through hole, and the inner engagement hole 7 may be a through hole or a non-through hole as illustrated.

  In the first aspect of the present invention, the engaging protrusion 8 is provided in the hole a. The engaging protrusion 8 is non-cylindrical and is configured to be non-rotatably engaged with an engaging recess 9 of the same shape having one end opened at the connecting side end face of the other rod-shaped body 3. The engagement protrusion 8 can have various columnar shapes as long as it is non-cylindrical, for example, a pentagonal column shape as in the embodiment of FIG. Various shapes such as an irregular column shape with an irregular surface can be adopted. In this case, the column shape or the column shape may be hollow.

  Further, the engaging recess 9 may have the same shape corresponding to the engaging protrusion 8 and may have a shape in which it engages relatively densely. In this case as well as the hole a, the other rod shape When the body 3 is in the form of a pipe, a part of the hollow portion is utilized to form an engaging recess 9 having a predetermined shape penetrating from the end face. In the case of a rod-like form, the predetermined shape is formed from the end face. An engaging recess 9 is provided. FIG. 5 shows an example of the other rod-shaped body 3 provided with the engagement recess 9 corresponding to the quadrangular prism shape, and FIG. 6 shows an example of the other rod-shaped body 3 provided with the engagement recess 9 corresponding to the hexagonal column shape. FIG. 7 shows an example of the other rod-like body 3 provided with an indeterminate columnar engaging recess 9 in which a plurality of circumferential ribs are provided around the cylinder.

  The fixed cylinder 4 is fitted to the outer surface of the insertion part into which the other rod-shaped body 3 is fitted, and the engagement protrusions 5 projecting from the inner surface thereof are overlapped with the outer engagement holes 6 and the inner portions of the respective rod-shaped bodies. Each rod-shaped body is connected and integrated in the axial direction by engaging with the engaging hole 7. In addition, the fixed cylinder 4 is provided with a split groove 10 penetrating the cylinder wall along the axis so that the engaging protrusions 5 can be easily removed from the respective engaging holes at the time of removal. Furthermore, a ring opening means for pushing the split groove 10 is provided. As this ring-opening means, for example, as in the embodiment of FIG. 1, an arch-shaped pressing portion 11 is formed integrally with both legs straddling the split groove 10 at a position opposed to the engaging projection 5. Alternatively, ring-opening knobs (not shown) are provided on both sides of the split groove 10 respectively. Further, it is possible to provide a ring-opening member as a separate member, open the dividing groove 10 and remove the engaging projection 5 from each engaging hole. The fixed cylinder 4 can be formed of a synthetic resin, a metal, or the like as in the other cases.

  FIG. 1 shows an example of an embodiment of the present invention. In this embodiment, one rod-like body 2 is in the form of a metal pipe, and the engaging projection 8 is a pentagonal prism. It is made of a synthetic resin that is configured as a part of the engaging projection forming member A that is configured by a member separate from the one rod-like body 2. The engagement protrusion forming member A includes a fixed base 12 fixed by fitting a peripheral edge to a predetermined position on the inner periphery of one of the rod-like bodies 2 and caulking, and the engagement protrusion is formed from the opening side end surface of the fixed base 12. The part 8 is protrudingly provided. The outside of the fixed base 12 is configured as a hole a. Further, an outer engagement hole 6 is formed at a predetermined position of the hole a portion.

  The other rod-shaped body 3 is made of metal in the form of a pipe, and is configured as a small-diameter fitting portion 13 having a small diameter so that the coupling-side end portion can be fitted into the hole a. Further, the chamfer 14 is tapered so that it can be easily inserted into the end corner portion, and the inner engagement hole 7 is recessed at a predetermined position of the small-diameter insertion portion 13. Further, a guide groove 15 reaching the inner engagement hole 7 is recessed from the tip along the axis. The guide groove 15 is configured so that the engagement protrusion 5 can be more easily engaged by gradually inclining and descending from the inner engagement hole 7 to the tip. Furthermore, one end is opened in the connection side end surface, and the engagement recessed part 9 with which the said engagement protrusion 8 engages comparatively densely is provided.

  Further, the engaging protrusions 5 engaged with the overlapping outer engaging holes 6 and inner engaging holes 7 are provided so as to protrude from the inner surface, and the fixed cylinder 4 is fitted to the outer surface of the insertion portion so that each rod-like body is moved in the axial direction. Connected and integrated. The fixed cylinder 4 has a cylindrical shape fitted from the outer surface of one end of the rod-shaped body 2 to the outer surface of the end of the other rod-shaped body 3, and the split groove 10 is formed at a position facing the engaging protrusion 5. In addition, the pressing portion 11 is integrally formed across the split groove 10. When the other rod-shaped body 3 is inserted into one rod-shaped body 2 due to the presence of the split groove 10, the fixed cylinder 4 pressed outward through the engaging projection 5 opens the split groove 10 so that the small-diameter fitting portion 13 is opened. In addition, due to the presence of the pressing portion 11, the split groove 10 is opened and the engaging protrusion 8 is pushed outward to remove the small-diameter insertion portion 13 more easily. It is configured as follows.

  When connecting the rod-shaped bodies, first, as shown in FIG. 4, the fixed cylinder 4 is fitted to the outer surface of one rod-shaped body 2 and the engagement projection 5 is fitted to the outer engagement hole 6. Keep it. Next, the small-diameter fitting portion 13 of the other rod-like body 3 is fitted into the hole a, the engaging projection 8 is fitted into the engaging recess 9, and the engaging projection 5 is inserted into the inner engaging hole via the guide groove 15. 7 to complete the connection (FIG. 1). At this time, the engagement protrusion 5 is pushed outward by the other rod-shaped body 3 and the engagement protrusion 5 is fitted into the engagement hole 7, but the other rod-shaped body 3 is fitted while pressing the pressing portion 11. May be. Further, the insertion is completed at a position where the end surface of the other rod-like body 3 contacts the end surface of the fixed base 12. In this connected state, even if a force such as twisting the other rod-shaped body 3 is applied to one rod-shaped body 2, a load is applied to the engagement protrusion 5 due to the engagement between the engagement protrusion 8 and the engagement recess 9. Disappear. Further, from this state, by pressing the pressing portion 11 to widen the dividing groove 10, the engaging protrusion 5 is detached from each engaging hole, and the small diameter fitting portion 13 can be easily pulled out.

  FIG. 8 shows another example. In this embodiment, the same rod-like body 2 as that of the embodiment of FIG. 1 is provided, and the engaging recess forming member B is fitted to the other rod-like body 3 in the form of a pipe. The example which formed the engagement recessed part 9 by fixing is shown. Therefore, it can be formed by fitting and fixing the engaging protrusion forming member A and the engaging recess forming member B using this type of conventional connecting structure. In the illustrated example, the engagement recess forming member B is fitted to the opening end side from the inner engagement hole 7 and is fixed by caulking the outer periphery, and the engagement recess 9 is provided through the center portion. . In this case, since the engagement recess 9 is shorter than the length of the engagement protrusion 8, the engagement protrusion 8 penetrates and reaches the depth, but the intended purpose can be achieved in exactly the same manner.

  FIG. 9 shows an example of the invention of claim 3. In the present invention, the hole a of one rod-like body 2 is also used as the engaging recess 9, and the end portion of the other rod state 3 itself is engaged. The hole 8 of one rod-like body 2 is formed in a non-cylindrical space-like engaging recess 9A, and the connecting side end of the other rod-like body 3 is formed as the engaging recess 9A. The engaging protrusion 8A is configured to be engaged with the engaging recess 9A when the rod-like bodies are connected and integrated. In the present invention, as long as there is no particular notice, the configuration of each part similar to that described in the first aspect of the present invention can be adopted.

In the illustrated example, one of the rod-like body 2 forms a pipe form, is fitted and fixed to the engaging concave portion forming member B ₁ in the connecting-side end portion inner surface. This engaging recess forming member B ₁ has a cylindrical portion 17 extending from the fixed base portion 16 fixed to the end portion side by fitting the peripheral portion into a predetermined position on the inner periphery of one of the rod-like bodies 2 and caulking. The inner periphery is configured as an engagement recess 9A that forms a pentagonal prism space. The engaging recess 9A is employed as the hole a. Accordingly, the outer engagement hole 6 is provided through the _one rod-like body 2 and the engagement recess forming member B ₁ .

  The other rod-shaped member 3 is also in the form of a pipe, and the connecting side end portion is configured as an engagement protrusion 8A having an outer peripheral surface that is non-rotatably engaged with the engagement recess 9A. In addition, an inner engagement hole 7 and a guide groove 15 having the same configuration as that of the above-described embodiment are provided on the outer surface of the engagement protrusion 8A.

  FIG. 11 shows an example in which the end face of the other rod-like body 3 is integrally closed in the embodiment of FIG.

  FIG. 12 shows an example in which a reinforcing filler 18 is fitted to the end of the other rod-shaped body 3 in the embodiment of FIG.

  FIGS. 13 and 14 show still another example of the invention of claim 3. In the illustrated example, one rod-like body 2 is in the form of a metal pipe, and its connecting side end is formed in a pentagonal column shape. The inner periphery is configured as an engagement recess 9A that forms a pentagonal prism space. The engaging recess 9A is employed as the hole a. In the illustrated example, the outer periphery of the circular rod-like body other than the connecting side end formed in the shape of a pentagonal column is configured to be a circumscribed circle of the connecting side end, but the connecting side end is formed smaller than that. Alternatively, both ends of the fixed cylinder 4 may be configured to be closely fitted to portions other than the connecting portions of the one rod-like body 2 and the other rod-like body 3.

  The other rod-shaped member 3 is in the form of a pipe made of synthetic resin, and the connection side end portion is configured as an engagement protrusion 8A having an outer peripheral surface that is non-rotatably engaged with the engagement recess 9A. ing. In addition, an inner engagement hole 7 and a guide groove 15 having the same configuration as that of the above-described embodiment are provided on the outer surface of the engagement protrusion 8A.

  FIG. 15 shows still another example of the third aspect of the present invention. In the embodiment shown in FIG. 13, the other rod-like member 3 in the form of a metal pipe is used. Similarly, one rod-like body 2 is made of metal, and its connecting side end is formed in a pentagonal column shape, and its inner periphery is configured as an engagement recess 9A that forms a pentagonal column space. The engaging recess 9A is employed as the hole a. The other rod-like body 3 has a pentagonal cylindrical shape in which the small-diameter fitting portion 13 at the tip is fitted into the engaging recess 9A, and a similar inner engagement hole 7 is formed at a predetermined position.

  Such a connecting structure of rod-like bodies can be employed for connecting the handle 20 of the cleaning tool 19 such as a mop as shown in FIG. 16, for example, and can be stored compactly. In addition, the connection structure of this invention can be employ | adopted in the connection part of not only a cleaning tool but a various rod-shaped body.

It is a longitudinal cross-sectional view which shows an example of the connection structure of the rod-shaped body of this invention. It is a disassembled perspective view of the same Example. It is a top view of the other rod-shaped body of the Example. It is a longitudinal cross-sectional view which shows the state before the connection of the Example. It is a top view which shows another example of the other rod-shaped body of this invention. It is a top view which shows another example of the other rod-shaped body of this invention. It is a top view which shows another example of the other rod-shaped body of this invention. It is a longitudinal cross-sectional view which shows another example of the connection structure of this invention of Claim 2. It is a longitudinal cross-sectional view which shows an example of the connection structure of the rod-shaped body of this invention 3. It is a disassembled perspective view of the same Example. It is a longitudinal cross-sectional view which shows another example of the connection structure of this invention. It is a longitudinal cross-sectional view which shows another example of the connection structure of this invention. It is a longitudinal cross-sectional view which shows another example of the connection structure of this invention. It is a disassembled perspective view of the same Example. It is a longitudinal cross-sectional view which shows another example of the connection structure of this invention. It is a perspective view which shows the cleaning tool which employ | adopted the connection structure of this invention rod-shaped body.

Explanation of symbols

2 ... one rod-like body, 3 ... the other rod-like body, 4 ... a fixed cylinder, 5 ... an engagement protrusion,
6, 7 ... engaging hole, 8, 8A ... engaging protrusion, 9, 9A ... engaging recess, 10 ... split groove,
a ... hole, A ... engaging projection forming member, B ... engaging recess forming member

Claims (4)

The connecting side end of the other rod-shaped body is inserted into the hole a having one end opened on the connecting-side end surface of one rod-shaped body, and is projected from the inner surface of the fixed cylinder having a split groove fitted to the outer surface of the insertion site. The rod-like body is connected to each of the rod-like bodies in the axial direction by engaging the engagement protrusions with the respective engagement holes provided at the connection side end portions of the rod-like bodies, and is connected to one of the rod-like bodies. A non-cylindrical engagement protrusion is provided in the side end, an engagement recess is formed in the connection side end surface of the other rod-shaped body so that the fitting protrusion is non-rotatably engaged, and the two rod-shaped bodies are connected. Sometimes, a connecting structure of rod-shaped bodies in which the engaging protrusion is inserted into the engaging recess. The engaging side end of the other rod-shaped body is inserted into the hole a opened on the coupling-side end surface of one rod-shaped body, and is fitted to the outer surface of the insertion site so as to protrude from the inner surface of the fixed cylinder provided with the split groove. It is a connecting structure of a rod-like body that engages a mating protrusion with each engagement hole provided at a connecting side end of each rod-like body to connect both rod-like bodies in the axial direction, and the hole a of one rod-like body Is formed in an engagement recess having a non-cylindrical space shape, and the connection side end of the other rod-shaped body is formed in an engagement protrusion that is non-rotatably engaged with the engagement recess. A connecting structure of rod-shaped bodies in which engaging protrusions are inserted into the engaging recesses. The engaging protrusion is formed by an engaging protrusion forming member A fitted and fixed in one rod-shaped body in the form of a pipe, and the engaging protrusion forming member A is fixed with an outer peripheral edge fixed in one rod-shaped body. The connecting structure for a rod-shaped body according to claim 1, comprising a base portion and the engaging protrusion. The engaging recess is formed by an engaging recess forming member B fixed in the other rod-shaped body in the form of a pipe, and the engaging recess forming member B has an outer peripheral edge fixed in the other rod-shaped body and the engagement in the center. The connecting structure for rod-shaped bodies according to claim 1, comprising a recess.

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