WO2011126128A1

WO2011126128A1 - Rod-like member connecting joint

Info

Publication number: WO2011126128A1
Application number: PCT/JP2011/058955
Authority: WO
Inventors: 鈴木　秀男
Original assignee: Suzuki Hideo
Priority date: 2010-04-06
Filing date: 2011-04-05
Publication date: 2011-10-13
Also published as: JP5607976B2; JP2011220384A

Abstract

Provided is a rod-like member connecting joint such that although said connecting joint has a simple configuration, reliable connection is achieved between a joint body and rod-like members, and that once a pull-out force is applied to the rod-like members connected to the joint body, there is exerted a tightening force which causes the rod-like members not to tend to be disconnected from the joint body, this tightening force being a so-called gripping force. With the aim of achieving this purpose, the rod-like member connecting joint comprises a joint body whereon the rod-like members are to be mounted, tubular sleeve sockets, and spiral lock rings which are placed between the rod-like members and the sleeve sockets. The rod-like member connecting joint is characterized in that the joint sleeves are formed on those connection surfaces of the joint body whereon the rod-like members are to be mounted, that threaded sections are formed on threadable engagement connection surfaces between the joint sleeves and the sleeve sockets, and that on the inner peripheral surfaces of the sleeve sockets, tapered inner peripheral surfaces are formed, the diameters of which gradually decrease from the ends of the formed threaded sections toward the positions of the openings at the other ends.

Description

Connecting joint for rod-shaped members

The present invention relates to a connecting joint for rod-shaped members, and more specifically, it is possible to reliably connect rod-shaped members made of a round pipe material or a round bar material having a circular cross-sectional shape via this connecting joint. It is related with the connection coupling | joint of the rod-shaped member which can perform the fixed fixation of the rod-shaped member connected by this.

Various types of connecting joints for rod-shaped members have been proposed.
First, when connecting a solid round bar made of a metal round bar (such as a deformed reinforcing bar with a spiral groove on the outer surface, a round bar with a smooth outer surface) in the longitudinal direction, In general, the end faces of a solid round bar are butted together and the butted portions are welded and connected.
When connecting a round pipe material made of metal or synthetic resin (a pipe material having a spiral groove formed on the outer surface, a pipe material having an outer surface formed on a smooth surface, etc.), JP 2000-329276 A Japanese Patent Application Laid-Open No. 2005-90553 (Patent Document 2) proposes a joint.
In the joints of

Patent Documents

1 and 2 shown below, the mounting structure of the round pipe material and the joint main body is complicated, and furthermore, after the round pipe material is fastened and fixed to the joint sleeve of the joint main body with a nut, the round pipe material is pulled out. When the force is applied, the larger the pull-out force is (in proportion to the pull-out force), the round pipe material is tightened in the direction of the joint sleeve and becomes more difficult to come off, so-called gripping force is applied. It wasn't.
Regarding the background art of the present invention, the following prior art documents can be cited.
JP 2000-329276 A JP-A-2005-90553

First, the welding work described above is performed at the site of connecting and assembling the rod-shaped members, but the work site generally has a poor scaffolding and surrounding environment, so it is safe and reliable. In order to carry out, there were many obstacles, and various equipment and machines required for welding work had to be carried to the work site.
Moreover, in the joints of

Patent Documents

1 and 2, in order to butt and assemble the joint body and the round pipe material, accurate alignment work is required, and the connection work also requires skill.
Furthermore, after tightening and fixing the round pipe material to the joint sleeve with a nut, when a pulling force is applied to the round pipe material, a tightening force that makes it difficult for the round pipe material to come off the joint body, so-called gripping force, is applied. Since it was not a thing of a structure, the safety | security with respect to retaining of a round pipe material was inadequate, and there existed a problem of putting on reliability.

The present invention eliminates all of the above-mentioned problems, and despite the simple structure, the coupling body and the rod-shaped member are securely coupled, and the rod-shaped member once coupled to the coupling body is pulled out. The present invention provides a connecting joint for rod-like members in which when the force is applied, a tightening force that prevents the rod-like member from coming off from the joint body, that is, a so-called gripping force, is applied.
That is, the invention of claim 1 relating to the present invention comprises a joint body to which a rod-shaped member is attached, a cylindrical sleeve socket, and a spiral retaining ring set between the rod-shaped member and the sleeve socket. A joint sleeve is formed on the connecting surface to which the rod-shaped member is attached, a threaded portion is formed on each of the jointing surfaces of the joint sleeve and the sleeve socket, and the inner peripheral surface of the sleeve socket is on the terminal side of the threaded portion forming position. A connecting joint for rod-like members, characterized in that a tapered inner peripheral surface that gradually decreases in diameter toward the position of the other end opening of the sleeve socket is formed.
According to a second aspect of the present invention, there is provided the rod-shaped member according to the first aspect, wherein a tapered outer peripheral surface whose inclined direction coincides with a tapered inner peripheral surface formed on the sleeve socket is formed on the outer peripheral surface of the spiral retaining ring. It is a coupling joint.
Further, the invention of claim 3 is the connecting joint for rod-like members according to

claim

1 or 2, further comprising a spacer capable of regulating a distance between the spiral retaining ring and the joint sleeve.
Next, the invention of claim 4 is the joint for connecting rod-like members according to any one of claims 1 to 3, wherein the rod-like member is a round pipe material.
The invention according to claim 5 is the joint for connecting rod-like members according to any one of claims 1 to 3, wherein the rod-like member is a round bar.
Furthermore, the invention of claim 6 is the joint for connecting rod-shaped members according to any one of claims 1 to 3, wherein the rod-shaped member is a deformed reinforcing bar.
Next, a seventh aspect of the present invention is the rod-shaped member coupling joint according to any one of the first to fifth aspects, wherein a spiral groove is formed on the outer peripheral surface of the rod-shaped member.
The invention according to claim 8 is the connecting joint for rod-shaped members according to any one of claims 1 to 5, wherein the outer peripheral surface of the rod-shaped member is formed as a smooth surface.
According to the connecting joint of the rod-shaped member of the invention according to claim 1, despite the simple configuration, a reliable coupling is achieved between the joint body and the rod-shaped member, and the rod-shaped member once coupled to the joint body. When a pulling force is applied to the member, an effect of applying a clamping force, that is, a so-called gripping force, that makes it difficult for the rod-shaped member to be detached from the joint body is exhibited.
Furthermore, it is possible to reliably manage the state of the gripping force of the spiral retaining ring with respect to the rod-shaped member only by visually recognizing the appearance of the positional relationship between the joint sleeve and the sleeve socket.
According to the connecting joint of the rod-shaped member of the invention according to claim 2, since the tightening of the spiral retaining ring to the tapered outer peripheral surface by the tapered inner peripheral surface of the sleeve socket becomes more reliable and efficient, the gripping force is more thorough. Demonstrate the effect of becoming something.
According to the connecting joint of the rod-shaped member of the invention according to claim 3, it is possible to prevent the spiral retaining ring from moving more than necessary to the sleeve socket side due to the presence of the spacer, and as a result, the tightening operation of the sleeve socket can be efficiently performed. Demonstrate the effect of being able to.
According to the connection joint of the bar-shaped member of the invention concerning Claims 4 thru | or 6, the effect that it can apply also to a round pipe material, a round bar material, and a deformed reinforcing bar is exhibited, respectively.
According to the connection joint of the rod-shaped member of the invention according to claim 7, since the spiral groove is formed on the outer peripheral surface of the rod-shaped member, the installation of the spiral retaining ring is facilitated, and the entire assembly is efficiently performed. Thus, the effect of improving the gripping force to the rod-like member is exhibited.
According to the coupling joint of the rod-shaped member of the invention according to claim 8, the outer peripheral surface of the rod-shaped member is formed to be a smooth surface, thereby exhibiting an effect that the range of use is further expanded.

It is a disassembled perspective view of the coupling joint which concerns on this invention. It is a partial cross section front view of the state which connected the rod-shaped member of the one side to the joint main part of the previous figure. It is a partial cross section front view of the state which connected the rod-shaped member of both sides to the joint main part of the previous figure. It is a disassembled perspective view of the connection coupling based on another Example. It is a partial cross section front view of the state which connected the rod-shaped member of both sides to the joint main part of the previous figure. It is a vertical end view of the spiral retaining ring according to another embodiment. It is a vertical end view of the spiral retaining ring according to still another embodiment.

DESCRIPTION OF SYMBOLS 1 Joint body 2 Sleeve socket 3 Spiral retaining ring 4 Bar-shaped member 4a Round pipe material 4b Round rod material 4c Deformed bar 5 Joint sleeve 6 Male thread part 7 Female thread part 8 Tapered inner peripheral surface 9 of sleeve socket Taper outer periphery of spiral retaining ring Surface 10 Spacer 11 Spiral groove 12 on outer peripheral surface of rod-shaped member 12 Wrench portion 13 of sleeve socket Biting tooth 14 of spiral retaining ring Center line

Hereinafter, embodiments of the coupling joint according to the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments.
The connection joint shown in FIGS. 1 to 3 is an embodiment in which a round pipe member 4a is used as the rod-like member 4, and FIGS. 4 to 5 use a round rod member 4b or a deformed reinforcing bar 4c as the rod-like member 4. 6 and 7 show embodiments in which the shape of the spiral retaining ring 3 is changed.
The coupling joint according to the present invention includes a joint body 1, a cylindrical sleeve socket 2, and a spiral retaining ring 3 set between the rod-like member 4 and the sleeve socket 2.
The

joint sleeves

5 and 5 are usually formed in a linear direction on the connecting surface to which the rod-like member 4 on the joint body 1 is attached. However, the

joint sleeves

5 and 5 are not necessarily arranged in the linear direction. This is also possible, and should be freely selected depending on the conditions of the rod-like member 4 to be connected. Further, by using a plurality of joint bodies 1, a plurality of rod-like members 4 can be continuously repeated to form a long connection form.
The

sleeves

2 and 2 are joined to the

joint sleeves

5 and 5 by screwing. Generally, a male thread portion 6 is formed on the outer peripheral surface of the joint sleeve 5 to The female screw portion 7 is formed on the peripheral surface, and the male screw portion 6 and the female screw portion 7 are screwed together to attach the joint sleeve 5 and the sleeve socket 2. The formation positions of the male screw portion 6 and the female screw portion 7 can be freely exchanged for design reasons.
Before the coupling sleeve 5 and the sleeve socket 2 are screwed together, the spiral retaining ring 3 is positioned so as to be slightly wound around the outer peripheral surface of the rod-shaped member 4, and the rod-shaped member 4 and the spiral retaining ring 3 are placed. The sleeve socket 2 is screwed and joined to the joint sleeve 5 in the wrapped state. The spiral retaining ring 3 is formed of a resin material or a metal material, and is normally wound around the rod-like member 4 in a spiral shape of about 1.5 to 8 turns, but the number of turns is particularly limited. Therefore, the selection can be made freely, and the gripping force by the sleeve socket 2 improves as the number of turns increases.
Since the spiral retaining ring 3 has the above-described configuration, the degree of freedom of expansion and contraction in the spiral direction is allowed in the stage before being attached to the rod-like member 4. When the spiral groove 11 is formed on the outer peripheral surface of the rod-shaped member 4, the rod-shaped member 4 can be attached to the rod-shaped member 4 along the spiral groove 11. It will be wrapped around. Before the outer peripheral surface of the spiral retaining ring 3 is tightened with the inner peripheral surface of the sleeve socket 2, the spiral retaining ring 3 is in a state where no pressure is applied to the outer peripheral surface of the rod-shaped member 4.
When the sleeve socket 2 is screwed into the joint sleeve 5 after completing such a preparation state, the tapered inner peripheral surface 8 of the sleeve socket 2 is wound around the outer peripheral surface of the rod-shaped member 4. The outer circumferential surface of the retaining ring 3 is pressed in the direction of gradually tightening, and the pressed spiral retaining ring 3 changes its state (changes the tightening state) so as to be in close contact with the outer circumferential surface of the rod-shaped member 4, and finally Since the pressing force received from the inner peripheral surface of the sleeve socket 2 is transmitted to the outer peripheral surface of the rod-shaped member 4 through the spiral retaining ring 3, the rod-shaped member 4 is attached in close contact with the joint sleeve 5 (joint body 1). Thus, the connection between the two is ensured. In this state, the rod-shaped member 4 does not come out of the joint sleeve 5 (joint body 1).
Here, the screwed state of the sleeve socket 2 and the joint sleeve 5 can be easily confirmed by visually observing the external appearance of the positional relationship between them (the external appearance of the screwed portion of both the screwed portions). Therefore, at the construction site, it is possible to easily manage whether the safety level of the connection status between the two is perfect or incomplete.
Next, when a pulling force is applied to the rod-shaped member 4 that has been connected to the joint sleeve 5 (joint body 1) for some reason, the rod-shaped member 4 moves away from the joint sleeve 5 (joint body 1). Will be pulled in the direction.
That is, when the rod-like member 4 is pulled away from the joint sleeve 5 (joint body 1), the spiral retaining ring 3 that is in close contact with the rod-like member 4 is also pulled in the same direction. Is fixed to the joint sleeve 5 by screwing of the male screw portion 6 and the female screw portion 7, so that its position is not changed.
For this reason, the taper inner peripheral surface 8 of the sleeve socket 2 and the taper outer peripheral surface 9 of the spiral retaining ring 3 have a relationship that the tightening force increases in proportion to the magnitude of the tensile force as the pulling force increases. Therefore, the rod-like member 4 is prevented from being pulled out. In the present invention, since the taper inner peripheral surface 8 is formed on the sleeve socket 2, the taper outer peripheral surface 9 is not formed on the outer peripheral surface of the spiral retaining ring 3, but a parallel outer peripheral surface is used. Although the above effect is achieved, it is preferable to form the tapered outer peripheral surface 9 on the outer peripheral surface of the spiral retaining ring 3 in order to further ensure the effect.
In the present invention, a cylindrical spacer 10 can be provided, and by adjusting the spacer 10 with an appropriate dimensional width, it is possible to adjust the interval between the spiral retaining ring 3 and the end face of the sleeve socket 2, By the adjustment, the effect of the taper inner peripheral surface 8 of the sleeve socket 2 can be efficiently exhibited, and the effect that the assembling and mounting work can be easily performed can be exhibited.
The rod-like member 4 in the present invention may be of any kind such as a round pipe member 4a, a round rod member 4b, or a deformed reinforcing bar 4c. There is no problem at all.
The material of the rod-shaped member 4 may be made of synthetic resin, rubber, or metal, and the property thereof may be a rigid material or a flexible material. It doesn't matter.
Further, when the spiral groove 11 is formed on the outer peripheral surface of the rod-like member 4, the spiral retaining ring 3 can be installed along the groove using the spiral groove 11, so that the assembling work is facilitated. Can demonstrate.
In the case where the outer surface of the rod-like member 4 is a smooth surface without forming the spiral groove 11, a material in which the biting teeth 13 are formed on the inner surface of the spiral retaining ring 3 as shown in FIG. 6 is used. It is preferable to do. As the biting teeth 13 bite into the outer peripheral surface of the rod-shaped member 4 when the spiral retaining ring 3 is tightened, the spiral retaining ring 3 and the rod-shaped member 4 do not slip and the usability is improved.
Furthermore, the overall shape of the spiral retaining ring 3 has a spiral shape, but the material of the spiral retaining ring 3 may be a strip-like material finished in a spiral shape, or a round wire-like material may be finished in a spiral shape. It may be.
In particular, when used for deformed reinforcing bars, etc., a round wire material is finished in a spiral shape (coil spring shape) as shown in FIG. 7, and the inner peripheral surface side remains in the form of a round wire material. When the outer peripheral surface side is cut or polished from the state of the round wire and the surface in contact with the inner peripheral surface of the sleeve socket 2 is finished to have a flat shape (see FIGS. 5 and 7), the spiral retaining ring 3 and Since the frictional resistance of the sleeve socket 2 is further increased, usability is improved. Reference numeral 14 denotes a center line.
The coupling joint of the present invention can be easily disassembled by loosening the screwed state of the sleeve socket 2, so that when the rod-like member 4 connected to the coupling joint needs to be replaced, the replacement can be easily performed. There is a feature that can be done.

The connecting joint of the rod-shaped member according to the present invention can be used in the field of connection work for various fluid supply pipes, supply / drainage pipes, supply / exhaust pipes, power / communication cable protection pipes, and various reinforcing bars and deformed reinforcing bars in building construction. It is.

Claims

It consists of a joint body to which the rod-shaped member is attached, a cylindrical sleeve socket, and a spiral retaining ring that is set between the rod-shaped member and the sleeve socket. , A threaded portion is formed on each threaded joint surface of the joint sleeve and the sleeve socket, and the inner peripheral surface of the sleeve socket is directed from the terminal end side of the threaded portion forming position toward the other end opening of the sleeve socket. A connecting joint for rod-like members, characterized in that a tapered inner peripheral surface that gradually decreases in diameter is formed.
2. A connecting joint for rod-shaped members according to claim 1, wherein a tapered outer peripheral surface having an inclined direction coinciding with a tapered inner peripheral surface formed on the sleeve socket is formed on the outer peripheral surface of the spiral retaining ring.
3. A connecting joint for rod-shaped members according to claim 1 or 2, further comprising a spacer capable of regulating a distance between the spiral retaining ring and the joint sleeve.
The rod-shaped member coupling joint according to any one of claims 1 to 3, wherein the rod-shaped member is a round pipe material.
The rod-shaped member coupling joint according to any one of claims 1 to 3, wherein the rod-shaped member is a round bar.
The rod-shaped member coupling joint according to any one of claims 1 to 3, wherein the rod-shaped member is a deformed reinforcing bar.
The spiral joint is formed in the outer peripheral surface of a rod-shaped member, The coupling joint of the rod-shaped member in any one of the Claims 1 thru | or 5 characterized by the above-mentioned.
The rod-shaped member connection joint according to any one of claims 1 to 5, wherein the outer peripheral surface of the rod-shaped member is formed into a smooth surface.