KR200344525Y1 - A joint device for plastic pipe - Google Patents

Abstract

The present invention is an "I" type connecting in an intuitive state, "L" type (L-bow), "T" type (T-bow) having a predetermined angle, "+" shaped to connect a plurality of pipes "+" "In constructing a joint of various synthetic resin pipes, such as a shape, a joint main body is provided with a pipe entrance stop on the inner circumferential surface of the pipe connection part, a fixing ring anchor jaw and a packing crimp slope on the outside, and a fastening flange on the outside. Means; An annular synthetic resin retaining ring means for fixing the front end of the pipe by inclining a plurality of elastic fixing piece members of a rigid elastic metal material such as stainless steel on an inner circumferential surface; Annular rubber packing means having a large number of compression protrusions on the inner circumferential surface; It is provided with a binding cap means in which the annular rubber packing means is crimped, and the annular synthetic resin retaining ring means and the annular rubber packing means are placed in the pipe connection portion of the joint main body and then connected in the pipe connection part. It is a simple operation that inserts the synthetic resin pipe to the entrance chin and fastens the binding cap means to the flange after tightening, so that the synthetic resin pipe can be firmly and hermetically coupled to each connection part of the joint. Even if the synthetic pipe is pulled outward, the elastic fixing piece of rigid elastic material of the annular synthetic resin retaining ring means is inserted into the outer circumferential surface of the synthetic resin pipe to restrain the separation of the synthetic resin pipe, thereby maintaining the connection state of the pipe firmly. About plastic pipe joints will be

Description

Synthetic resin pipe joints {A joint device for plastic pipe}

The present invention is a one-touch method for various synthetic resin pipes such as pipes made of synthetic resins such as PVC, PE, PP, water pipes, sewer pipes, houses, drainage pipes, and pipes of industrial plastic engineering materials having excellent chemical resistance (for example, PFA made of fluorine resin). The present invention relates to a synthetic resin pipe joint for connecting in a tight and secure hermetic state only by inserting and joining operations. Particularly, the present invention provides an "I" type which connects in a straight state, "L" type having a predetermined angle, " In constructing joints of various synthetic resin pipes, such as T "type and" + "shape, which connect a plurality of pipes in a" + "shape, a pipe entry stopper is provided on the inner circumferential surface of the pipe connection portion and a fixed ring anchor is provided on the outside thereof. A joint body means having a jaw and a packing pressing slope and having a fastening flange on the outside; An annular synthetic resin retaining ring means for fixing the front end of the pipe by inclining a plurality of elastic fixing piece members of a rigid elastic metal material such as stainless steel on an inner circumferential surface; Annular rubber repacking means having a large number of compression protrusions on the inner circumferential surface; It is provided with a binding cap means in which the annular rubber material packing means is squeezed, and the annular synthetic resin retaining ring means and the annular rubber material packing means are placed in the pipe connection portion of the joint body and then connected in the pipe connection portion. It is a simple operation that inserts the synthetic resin pipe to the entrance chin and fastens the binding cap means to the flange after tightening, so that the synthetic resin pipe can be firmly and hermetically coupled to each connection part of the joint. Even if the synthetic pipe is pulled outward, the elastic fixing piece of rigid elastic material of the annular synthetic resin retaining ring means is inserted into the outer circumferential surface of the synthetic resin pipe to restrain the separation of the synthetic resin pipe, thereby maintaining the connection state of the pipe firmly. About plastic pipe joints A.

In general, the method of interconnecting PVC pipes such as PVC, PE, PP, etc., which are generally used as water, sewage pipes, water collecting pipes, and drainage pipes, generally extends one end of the PVC pipe to form a wider joint. A method of connecting one end of another pipe to be connected only by its own pipe, and a method of connecting through a "I", "L" and "T" shaped joint to the connection side of the pipe to be a straight pipe are widely used.

However, the method of connecting the electronic pipes themselves to each other is commonly used in cases where airtightness is not required, such as the connection of drain pipes to rain gutters, but the simplicity of pipe connection can be expected, but the airtightness of the connection can not be expected at all. The range shows the limitation that can not exert simple function of connecting pipes, and if the tightness of connected pipes is required, it is a complicated process of connecting the pipes to joints and then sealing them by welding them with caulking or sealing materials. Not only does it show the disadvantage of requiring a lot of manpower and labor, but it also has an economic burden such as expensive caulking or sealing materials that need unnecessary materials, so it is a simple facility that does not require confidentiality, such as drain pipe of rain gutter. Connection etc A situation that is often used only if:

In addition, in the latter joint method using the "I", "L" and "T" shaped joints, which are connection methods for maintaining the airtightness of the connection part, to avoid the pipe direct connection method which is weak in the airtightness of such a connection part, Its configuration is inserted inside the joint to prevent separation of the plurality of jaw members for holding the outer periphery of the synthetic resin pipe and spring members and jaw members for lifting the jaw members up and down. There are also complex joints with various parts, such as cylindrical fasteners, which are joined to the outside of the members.However, there are many parts for constituting the joints, and there is a complicated structural defect, which leads to the production and assembly of the joints themselves. It is not only complicated and difficult, but also increases the cost of production and assembly. The outer circumferential surface of the pipe is compressed and deformed by the jaw member, and when the pipe joining operation is applied, if excessive pressure is applied to the jaw member, a hard synthetic resin pipe such as PVC is easily broken and the bonding state or airtightness becomes weak. In this case, the joints and pipes are separated from each other. In addition, in the case of the joints by the jaw members, the pipes and the joints are coupled as the tip of the pipe is deformed by the pressing force of the jaw members. It is suitable for the connection of some rigid pipes such as PVC, but in the case of soft pipes, the deformation is more severe, which is not so desirable for joining soft pipes. .

Accordingly, the present invention solves the disadvantages of the conventional joint for connecting the conventional synthetic resin pipes as described above to provide a joint for synthetic resin pipes that can be applied to all pipes made of soft, hard synthetic resin material Is there.

In addition, the present invention is to enclose the annular synthetic resin fixing ring means and the annular rubber packing means in the pipe connection portion of the joint body means and insert the synthetic resin pipe for connecting in the pipe connection portion and then tighten the binding cap means with bolts It is a simple operation that compresses and seals rubber material packing to the pipe main surface so that the synthetic resin pipe can be firmly and tightly combined on each connection part of the joint, so that anyone can easily connect the pipe without any additional equipment and technology. Another object is to provide a joint for a synthetic resin pipe that can be performed.

In addition, the present invention, even after the synthetic resin pipe is drawn to the outside once it is combined, the elastic fixing piece of the rigid elastic material of the annular synthetic resin fixing ring means is implanted and fixed on the outer peripheral surface of the synthetic resin pipe, thereby It provides a joint for synthetic resin pipe that can maintain the pipe connection or hermetic state for a long time by restraining the risk of separation from the joint to keep the pipe connection more firmly. There is another purpose.

In addition, the subject innovation is a joint body; An annular synthetic resin retaining ring for fixing the leading end of the pipe by inclining a plurality of elastic fixing piece of rigid elastic metal material sequentially inserted into the connecting portion at an angle; Consists of relatively small elements, such as annular rubber packing and binding caps, which have a large number of compression protrusions on the inner circumferential surface, making joints extremely simple and economical, providing inexpensive, bulky and inexpensive joints at low cost. There is another purpose.

The present invention for achieving the above object is provided with a pipe access stopper on the inner inner peripheral surface of the pipe connecting portion, and a joint ring means having a fixing ring anchoring jaw and a packing compression inclined surface on the outside and a fastening flange on the outside; An annular synthetic resin retaining ring means for fixing the front end of the pipe by inclining a plurality of elastic fixing piece members of a rigid elastic metal material such as stainless steel on an inner circumferential surface; Annular rubber repacking means having a large number of compression protrusions on the inner circumferential surface; It is characterized in that it comprises a binding cap means to turn the pressing protrusion for pressing the annular rubber packing means, according to the accompanying drawings illustrating the most preferred embodiment as follows.

1 is an exploded perspective view of a part of the "I" shaped joint of a basic embodiment of the present invention,

2 is a cross-sectional view of the same state,

3 to 5 are cross-sectional views showing a coupling process of the synthetic resin pipe and the joint in the present invention,

3 is a cross-sectional view immediately before initiation of bonding;

4 is a cross-sectional view of the combined state,

5 is a cross-sectional view of the pipe outside the pulled state after joining

6 to 8 is a cross-sectional view showing another embodiment such as "L" type, "T" type of the present invention

* Explanation of symbols for the main parts of the drawings

10: joint body means 11: insertion connection (original connection) 12: access support jaw

13: Fixing ring set 14: Packing crimping surface 15: Packing set surface

16: bolt fastening 17: fastening flange 20: annular synthetic resin fixing ring means

21: elastic fixing piece member 22: tip of elastic fixing piece member 23: bending end

θ: inclination angle 30: annular rubber repacking means 31: crimp protrusion

32: tip slope portion 33: inner peripheral surface 40: binding cap means

41: crimp protrusion 42: bolt fastening

1 is an exploded perspective view showing a part of an "I" shaped joint which is a basic embodiment of the present invention, FIG. 2 is a cross-sectional view of the same state, and FIGS. 3 to 5 are a process of joining the synthetic resin pipe and the joint in the present invention. 3 is a cross-sectional view immediately before the start of the coupling, FIG. 4 is a cross-sectional view of the coupled state, and FIG. 5 is a cross-sectional view of the pipe outer drawing state after the coupling.

As shown, the subject innovation is a joint body means 10 made of a synthetic resin injection product, such as PE; Annular synthetic resin fixing ring means for fixing the front end portion (P ') of the pipe (P) by inclining a plurality of elastic fixing piece member 21 of a rigid elastic material such as stainless steel on the inner peripheral surface inclined at a predetermined angle (θ) 20; An annular rubber packing means 30 having a plurality of crimping protrusions 31 on the inner circumferential surface; Consists of a binding cap means 40 to announce the pressing projection for pressing the annular rubber packing means 30.

As shown in Figures 1 to 5, the insertion connecting portion 11 for inserting and coupling the front end portion (P ') of the synthetic resin pipe (P) in the case of the "I" shaped joint body 10 left, right Are respectively provided in the same manner, and the entry stop 12 is formed on the inner inner circumferential surface of each connecting portion 11 to suppress the excessive entry of the tip portion P 'of the pipe P entering. A packing settling surface 15 having a fixing ring settling 13 and a packing crimping inclined surface 14 which is formed to be inclined to extend outwardly thereof is provided on the outside front of the entry blocking jaw 12 continuously. The joint body means 10 is provided with fastening flanges 17 formed on both sides of the plurality of bolt fastening holes 16 extending outwardly.

In the fixing ring support jaw 13 of the joint body means 10, a plurality of elastic fixing piece members 21 made of steel material such as stainless steel are inclined at an inclination angle θ at a predetermined angle on the inner peripheral surface of the pipe. The annular synthetic resin fixing ring means 20 for fixing the tip of the insert is seated.

The elastic fixing piece member 21 made of a rigid elastic material such as stainless steel, which is erected inclined at an inclination angle θ at a predetermined angle on the inner peripheral surface of the annular synthetic resin material fixing ring means 20 is substantially inserted synthetic resin. Erosion inside the tip portion (P ') of the ash pipe (P) has a function of fixing the synthetic resin pipe (P), the tip 22 thereof is preferably formed in an acute angle, annular synthetic resin fixing ring Of the elastic fixing piece member 21 of a rigid elastic metal material such as stainless steel when it is injected into the state having the bent end 23 in the means 20 to act with the tip P 'of the synthetic resin pipe P The elastic fixing piece member 21 made of a rigid elastic material such as stainless steel, which prevents the position from being deformed or departed, is at least 3 on the inner circumferential surface of the annular synthetic resin fixing ring means 20 at equal intervals. Forming more than one place, when erosion with the synthetic resin pipe (P), evenly distributed gripping force or bonding force on the entire peripheral surface of the synthetic resin pipe (P) to fix the synthetic resin pipe (P) more firmly, stainless The inclination angle θ of the elastic fixing piece member 21 of a rigid elastic metal material such as steel stands up and protrudes at an angle greater than 45 ° to the pipe P traveling direction in consideration of elastic restoring force.

In addition, an annular rubber packing means 30 having a plurality of pressing projections 31 on the inner circumferential surface of the joint compression inclined surface 14 and the packing settlement surface 15 of the joint body means 10 is placed.

The tip inclined portion 32 of the annular rubber packing means 30 is formed to have an inclined surface corresponding to the packing compression inclined surface 14 of the joint body means 10, so that the binding cap means 40 is the joint body. The coupling protrusions formed on the binding cap means 41 when the bolts 51 and the nuts 52 are matched with each other by fastening the bolts 16 and 42 after coupling to the flange 17 of the fastening unit 10. (41) compresses the front surface of the annular rubber packing means (30) from the rear to the inner side, whereby the tip inclined portion (32) of the annular rubber packing means (30) is the packing of the joint body means (10). Pressing in contact with the pressing inclined surface 14 to double the front pressing force between the packing pressing inclined surface 14 of the joint body means 10 and the tip inclined portion 32 of the annular rubber packing means 30. Accordingly, the inner circumferential surface 33 of the annular rubber material packing means 30 in which the crimping protrusions 31 are formed is the outer side of the synthetic resin material pipe P. It is compressed in the state of being circumferentially circulated in the main surface side to increase the adhesion between the outer circumferential surface of the synthetic resin pipe (P) and the annular rubber packing means (30) to increase the rubber packing means (30) and the synthetic resin pipe (P) To improve the tightness and bonding between

The present invention of such a configuration, first, as shown in Figure 3, as shown in the above description in the fixing ring anchor jaw 13 and the packing set surface 15 of the insertion connection portion 11 of the joint body means 10 When the annular synthetic resin fixing ring means 20 and the annular rubber packing means 30 are sequentially inserted, the annular synthetic resin fixing ring having an inclination angle θ of 45 ° or more with respect to the horizontal traveling direction of the pipe P The elastic fixing piece 21 of the means 20 is present in a state where it protrudes to a position higher than the annular rubber repacking means 30-that is, higher than the outer diameter of the pipe P.

In this state, when the front end portion P 'of the sump resin pipe P enters the entrance stop 12 of the joint main body 10 as shown in FIG. 4, the outer peripheral surface of the pipe P and the elastic fixing piece member ( 21 enters a state in which the elastic fixing piece member 21 is pressed downward, and the elastic fixing piece member 21 is brought into contact with the outer peripheral surface of the synthetic resin pipe P by elasticity restoring force. While being acutely distal end 22 is inserted in a state of slightly eroding the surface of the pipe (P).

After inserting the synthetic resin pipe (P) in this way, after the coupling cap means 40 on the rear end fastening flange 17 of the joint body means 10 and matched each of the fastening holes 16, 42 When the bolt 51 and the nut 52 are bonded to each other, the packing crimping surface 14 of the crimping protrusion 41 and the joint body means 10 in which the annular rubber packing means 30 is formed on the binding cap means 41 is formed. The inner circumferential surface 33 of the rubber material packing means 30 is squeezed in a circular shape into the outer circumferential surface side of the synthetic resin pipe P while being compressed between the outer circumferential surface of the synthetic resin material pipe P and the annular rubber packing. The inner circumferential surface of the means 30 is hermetically compressed and firmly coupled without leakage, and in this state, when the synthetic resin pipe P is drawn outward as shown in FIG. 5, the annular of the synthetic resin pipe P The front end portion 22 of the elastic fixing piece member 21 of the synthetic resin fixing ring means 20 It is eroded and fixed over the entire circumferential surface of the synthetic resin pipe (P), so that the synthetic resin pipe (P) and the joint body means (10) are separated and dismantled. It will be able to maintain the long term.

Meanwhile, in the above description, the description has been mainly focused on the "I" shaped straight pipe joint shown in FIGS. 1 to 5 as an example, but is not limited thereto. The 90 ° "L" shaped joint shown in FIGS. L-bow) and its 45 ° “L” shaped joint, as well as its “T” shaped joint shown in FIG. 8, may be used to provide various joints.

Such a design of the present invention, after placing the annular synthetic resin retaining ring means and the annular rubber packing means sequentially in the pipe connection portion of the joint body means, inserts the synthetic resin pipe and combines the binding cap only with a simple operation Anyone can easily install and use it by making it firmly and airtightly coupled to each connection part of the joint, and once it is joined, when the plastic pipe is drawn out, The elastic fixing piece of elastic metal is eroded on the outer circumferential surface of the synthetic resin pipe to fix the bonding state more firmly, so that the synthetic resin pipe can be perfectly maintained for a long time without the phenomenon of separating from the joint, and the components are simplified. Relatively inexpensive This will force with a variety of features, such as can be produced by providing a large amount of cheap plastic pipe joints for superior.

Claims (2)

A joint body means including a pipe entry stopper on an inner circumferential surface of the pipe insertion connection part, a fixing ring anchorage and a packing crimp slope on an outer side thereof, and a fastening flange on the outside; An annular synthetic resin retaining ring means for protruding a plurality of elastic fixing piece members of a rigid elastic metal material such as stainless steel at an angle to the inner peripheral surface to erode the tip of the pipe; Annular rubber packing means having a plurality of compression protrusions on the inner circumferential surface and forming a tip slope corresponding to the packing crimp slope; Synthetic resin pipe joint, characterized in that it comprises a binding cap means of the annular pressing portion for pressing the annular rubber packing means. The method of claim 1, At least three elastic fixing piece members made of rigid elastic material, such as stainless steel, which are plurally protruded from the inner circumferential surface of the annular synthetic resin fixing ring means, stand at an inclination angle θ greater than 45 ° with respect to the horizontal traveling direction at least three equal intervals. Synthetic resin pipe joints characterized by inclined.