JP2004084957A - Connector of synthetic resin pipe body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for easily confirming connection to a connector of a synthetic resin pipe body. <P>SOLUTION: This connector 100 connects the synthetic resin pipe body 10, and is composed of a connector body 20 having an internally inserting cylinder part into which a connecting end part 11 of the pipe body 10 is inserted and a moving sleeve 30 moved in the shaft direction to the internally inserting cylinder part for connecting the pipe body 10 by sandwiching the connecting end part 11 with the internally inserting cylinder part. The moving sleeve 30 forms a confirming window 40 for confirming the existence of the connecting end part 11 of the pipe body 10 inserted into the innermost side more than a sandwiching area by cutting out an end part arranged on the innermost side more than the sandwiching area for sandwiching the connecting end part 11 by the internally inserting cylinder part and the moving sleeve 30. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a connector for connecting a synthetic resin pipe.

BACKGROUND ART Conventionally, there are various types of connecting tools for connecting a synthetic resin pipe (hereinafter, referred to as a pipe), and among them, for example, a connector as disclosed in Japanese Patent Publication No. 5-79877 has been proposed. Specifically, the configuration is as shown in FIG. That is, this type of connecting device 200 is a connecting device 200 composed of two parts, a connecting piece 201 formed as a tube sleeve and a moving sleeve 202 movable in the axial direction with respect to the tube sleeve. The connecting piece 201 is provided with a circumferential rib 201a. The rib 201a provided at a position closest to the flange 203 of the connecting piece 201 is formed as a stopper for preventing movement of the tubular body 210. A receiving chamber 204 for the tube material extruded by the moving sleeve 202 is formed between the receiving chamber 203 and the receiving sleeve 203.
Japanese Patent Publication No. 5-79877

However, in the connection tool 200 having such a configuration, as a result of forcibly moving the tube 210 while nipping the tube 210 between the moving sleeve 202 and the connection piece 201, the pipe 210 is inserted into the connection piece 201 deep. There was a problem that it was not possible to confirm whether or not.

In addition, even after the pipe 210 is connected to the connection tool 200, some external force acts on the pipe 210 and the pipe moves in a direction in which the pipe comes off with respect to the connection piece, which may cause water leakage. However, there is a problem that the connection state must be checked periodically, but the check cannot be performed.

The present invention is to solve such a problem, and an object of the present invention is to provide a connector capable of easily confirming a connection state of a pipe to the connector.

In order to solve the above, the means adopted by the present invention will be described with reference numerals used in the embodiment. First, the connector 100 for a synthetic resin pipe according to claim 1 The connecting tool main body 20 having an insertion tube portion 21 inserted into the connection end portion 11, and the connection end portion 11 sandwiched between the insertion tube portions 21 to connect the inner tube 10 to the tube body 10. A movable sleeve 30 that is moved in the axial direction with respect to the insertion tube portion 21, and the moving sleeve 30 includes a clamping region A in which the connection end portion 11 is sandwiched between the inner insertion tube portion 21 and the movement sleeve 30. A confirmation window 40 for confirming the presence / absence of the connection end 11 of the pipe body 10 inserted farther than the holding area A is formed by notching an end portion disposed further to the rear side. The gist of what has been done.

Next, according to the second aspect of the present invention, the connecting body 20 constituting the connecting part 100 of the synthetic resin tubular body according to the first aspect is connected to the connecting body 20 along with the movement of the moving sleeve 30 in the connecting direction. The end face of the pipe body 10 is provided with an end face 25 with which the end face of the pipe body 10 abuts in order to prevent the pipe body 10 from moving. The gist is that the connection end 11 of the body 10 is formed so as to be able to be confirmed.

As described in detail above, the invention of claim 1 of the present application is a connecting tool for connecting a synthetic resin pipe body, which has an insertion tube portion inserted into a connection end of the pipe body. A main body, and a moving sleeve that is axially moved relative to the inner tube portion to connect the tube body with the connection end portion sandwiched between the inner tube portions, and the moving sleeve includes For checking the presence or absence of the connection end portion formed by a notch cut out from an end portion, on the deeper side than a sandwiching region that sandwiches the connection end portion with the insertion tube portion and the moving sleeve. By forming the confirmation window, an excellent effect that the operation of confirming the connection state of the tube can be easily performed is achieved.

Next, according to the invention of claim 2 of the present application, the pipe body moves in the connection direction along with the movement of the moving sleeve, to the connector body constituting the connector of the synthetic resin pipe body according to claim 1. To prevent the end face of the connecting body from coming into contact with the end face of the pipe body, and the confirmation window is formed so that the connecting end of the pipe body abutting on the end face of the connecting body can be checked. By doing so, an excellent effect that the work of confirming the connection state of the tube can be easily performed is achieved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a synthetic resin pipe connecting device according to the present invention will be described. However, this is a typical example, and the present invention is limited by the following examples unless exceeding the gist. It is not done.

FIG. 1 shows a state in which a synthetic resin tube 10 (hereinafter, referred to as a tube 10) made of a material such as a heat-resistant plastic is inserted into a connector 100 for a synthetic resin tube according to the present invention. Things. Then, the connecting tool 100 sandwiches the connecting end portion 11 between the connecting tool main body 20 having an insertion tube portion 21 inserted into the connection end portion 11 of the tube body 10 and the inner insertion tube portion 21, It is basically composed of a moving sleeve 30 which is moved in the axial direction with respect to the inner insertion tube portion 21 to connect the tube 10. Since the connection end 11 of the tube 10 is expanded by a commonly used diameter-expanding jig before being inserted into the inner insertion tube portion 21, it can be easily inserted. Thereby, the inner peripheral surface of the inner insertion tube portion 21 and the inner peripheral surface of the pipe body 10 are aligned on the same straight line, so that flow loss can be prevented.

A plurality of ribs 21a are provided on the outer peripheral surface of the insertion tube portion 21 inserted into the connection end portion 11 of the tube body 10, and each rib 21a is connected to the tube when the moving sleeve is pressed. Since the tube 10 bites into the body 10, the tube 10 can be securely connected. A region where the tube body 10 is sandwiched between the moving sleeve and the insertion tube portion is a clamping region A.

By the way, in the process of fitting the moving sleeve 30, the tube material of the tube body 10 gradually accumulates in the connection direction, and the outer tube wall 22 is formed to prevent the accumulated tube material from jumping outward. Is provided.

The outer cylinder wall 22 extends in the opposite connection direction (the direction in which the tube 10 connected to the connector 100 is pulled out) so as to form a tube insertion space between the outer tube wall 22 and the inner insertion tube portion 21. The shape thereof is substantially L-shaped so as to protrude in the vertical direction with respect to the insertion tube portion 21 and bend in the opposite direction in parallel with the insertion tube portion 21 in the opposite connection direction. Thereby, since the outside of the connection end of the tube is covered, the tube material is reliably prevented from protruding outward. The tube material whose projection is restricted is completely received in the receiving space portion 24 provided further in the back (connection direction). Accordingly, it is possible to securely push the moving sleeve 30 until the end face thereof is pressed against the end face of the outer cylinder wall 22.

Further, the outer cylinder wall 22 is formed with a movement preventing portion 23 so as to protrude inward from the inner wall thereof, so that when the moving sleeve 30 is compressed and pushed onto the outer periphery of the tubular body 10, it is fitted. Since it serves as a stopper for the end face of the tube 10, the tube 10 is prevented from moving in the connection direction.

Next, the confirmation window 40, which is a feature of the connector 100 according to the present invention, will be described.

As shown in FIG. 1, the confirmation window 40 is formed in the connector main body 20 on the back side of the clamping area A where the inner insertion tube 21 and the moving sleeve 30 clamp the connection end 11 of the tube. It is a thing. That is, the confirmation window 40 is formed by partially cutting out the protruding end of the outer cylinder wall 22 formed in the connector body 20.

確認 The confirmation window 40 is cut out in a protruding end portion of the outer cylinder wall 22 in a semicircular shape at a depth H shown in the drawing from the movement preventing portion 23. A plurality of semicircular confirmation windows 40 are formed in the protruding end of the outer cylinder wall 22 at predetermined intervals. Thereby, even when the moving sleeve 30 is forcibly pressed and pressed against the end surface of the outer cylinder wall 22, it is easy to check whether or not the tube end surface 11 is securely inserted to the movement preventing portion 23. Become.

Next, FIG. 2 shows another embodiment of the confirmation window 40 provided in the connection tool 100. The connector 100 has a circular through-hole in the connector main body 20 on the back side of the holding area A where the connecting end portion 11 of the tube is sandwiched between the inner tube 21 and the moving sleeve 30. It is.

A plurality of ribs 21 a are provided on the outer peripheral surface of the inner insertion tube portion 21, and a movement preventing portion 23 to which the end surface of the connection end portion 11 of the tube 10 abuts is provided further in the back. . Accordingly, when the moving sleeve 30 is pressed onto the outer periphery of the tubular body 10 while being compressed, the stopper serves as a stopper of the end face of the tubular body 10, so that the tubular body 10 is prevented from moving in the connection direction.

A plurality of confirmation windows 40, which are through holes, are formed at predetermined intervals on the protruding end of the outer cylinder wall 22, and the connection end 11 of the tube 10 comes in contact with the movement preventing portion 23 as shown in the figure. It is formed so that it can be confirmed whether or not it is. Thereby, even when the moving sleeve 30 is forcibly pressed and pressed against the end face of the outer cylinder wall 22, it is easy to check whether or not the pipe end face 11 is securely inserted to the movement preventing section 23. Become.

Next, FIG. 3 or FIG. 4 shows another embodiment of the connector 100 according to the present invention. The connecting device 100 includes a connecting device main body 20 having an inner insertion tube portion 21 and a moving sleeve 30, and the connecting end portion 11 of the tube is held between the inner inserting tube portion 21 and the moving sleeve 30. A confirmation window 40 for confirming the presence or absence of the connection end 11 of the tubular body is formed in the moving sleeve 30 on the back side of the attachment area A.

確認 The confirmation window 40 is formed by partially cutting out the end of the moving sleeve 40 at a predetermined interval, and has a semicircular shape. Thereby, even when the moving sleeve 30 is forcibly pressed and pressed against the end face of the connector main body 20, it is possible to confirm whether or not the pipe body 10 is securely inserted to the end face 25 of the connecting portion main body 20. It will be easier.

Next, the connecting portion 100 shown in FIG. 5 or FIG. 6 is composed of a connecting tool body 20 having an inner tube portion 21 and a moving sleeve 30. A confirmation window 40 which is a through hole for confirming the presence or absence of the connection end portion 11 of the tubular body is formed in the moving sleeve 30 on the back side of the sandwiching region A for sandwiching the connection end portion 11 of FIG. .

The confirmation window 40, which is a through hole, is formed in a circular shape, and a plurality of confirmation windows are formed at an end of the moving sleeve 30. Thereby, the connection state of the tube 10 can be easily confirmed.

By the way, the present invention is not limited to the above-described embodiment. For example, the notch shape and the through-hole shape of the confirmation window 40 are not limited to the above-described embodiment, and the object of the present invention can be achieved. Improvements, modifications, etc. within the scope are included in the present invention.

As described above, the connecting device 100 according to the present invention includes the connecting device main body 20 having the inner insertion tube portion 21 and the moving sleeve 30. A connection window 40 for checking the presence or absence of the connection end 11 of the tubular body is provided in the connection tool body 20 or the moving sleeve 30 on the back side of the holding area A where the end 11 is held.

Therefore, when the moving sleeve 30 is forcibly pressed and pressed against the end surface of the outer cylinder wall 22, it is easy to confirm whether or not the tube 10 is securely inserted into the inner insertion tube 21. Can be done.

確認 The check window 40 is formed in the outer tube wall 22 extending in the anti-connection direction so as to form a tube insertion space between the check window 40 and the inner tube portion 21. That is, since the outer cylinder wall 22 extends in the anti-connection direction so as to cover the outside of the connection end of the tube, the tube material of the tube 10 can be reliably prevented from jumping outward. .

FIG. 3 is a partially cutaway sectional view showing a state in which a pipe is fitted in the embodiment of the connector according to the present invention. It is a partially cutaway sectional view which shows another Example of the confirmation window which comprises the connection fixture which concerns on this invention. It is a front view which shows the Example in which the confirmation window was provided in the moving sleeve which comprises the connection tool which concerns on this invention. FIG. 4 is a partial cross-sectional view showing a section between BB in FIG. 3. It is a front view which shows another Example in which the confirmation window was provided in the moving sleeve which comprises the connection tool which concerns on this invention. FIG. 6 is a partial cross-sectional view showing a section between C and C in FIG. 5. It is a fragmentary sectional view showing the state where the pipe was inserted in the conventional connector.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10 Pipe 11 Connection end part 20 Connector main body 21 Inner insertion tube part 21a Rib 22 Outer tube wall 23 Movement prevention part 24 Reception space part 25 End face 30 Moving sleeve 40 Confirmation window A Nipping area 100 Connector

Claims (2)

A connector for connecting a synthetic resin tube,
A connection tool main body having an insertion tube portion inserted into a connection end portion of the tube, and the insertion tube sandwiching the connection end portion with the insertion tube portion to connect the tube; A moving sleeve that is moved axially relative to the
In the moving sleeve, in order to confirm the connection end of the pipe inserted deeper than the clamping region that clamps the connection end between the inner insertion tube portion and the moving sleeve, the clamping region is A connector for a synthetic resin tubular body, characterized in that a confirmation window for confirming the presence or absence of the connection end portion formed by a notch cut from an end portion is further formed on a farther side than the end portion. The connector main body includes an end face of the connector main body with which an end face of the pipe abuts to prevent the pipe body from moving in the connection direction with movement of the moving sleeve,
The connector according to claim 1, wherein the confirmation window is formed so that a connection end of the tube abutting on an end surface of the connector main body can be confirmed.

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