JPH0673592U - One-touch fitting removal tool for resin tubes - Google Patents

Abstract

(57) [Summary] [Purpose] By providing a removal tool that can easily and accurately push in a collet that holds and locks a resin tube that is inserted into an insert of a one-touch joint, and can be operated to separate from the resin tube. Improves the workability of removing the resin tube without impairing the workability of attaching the resin tube to the push-in joint. [Structure] An engaging portion 3 having a guide groove 5 having substantially the same width as the outer diameter of a resin tube removably inserted into a tubular insert provided in a joint body is provided, and the engaging portion 3 By arranging the handle 2 in series, the engaging portion 3 of the removal tool 1 can be easily and reliably guided to the outer end of the collet by using the resin tube as a guide, and the pushing operation of the collet is facilitated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a removal tool for a one-touch joint that allows a resin tube to be connected with one touch.

[0002]

[Prior art]

 When connecting resin tubes typified by nylon tubes, etc., or connecting to the ports of various types of equipment, in the past, a cylindrical insert was provided in the fitting body, and a resin that was detachably inserted into this insert was used. In many cases, the tube is tightened with a fastener such as a nut or a belt so as to prevent slip-off engagement, or the sleeve fitted on the tube is deformed to reduce its diameter to prevent slip-off engagement of the tube.

However, in the case where the tube is retained and engaged by using the tightening tool such as the nut and the belt as described above, the tube attaching / detaching operation is troublesome. In addition, the one in which the tube is retained and engaged by utilizing the deformation of the sleeve has a problem that the extraction workability is poor because it is necessary to break the sleeve and extract the tube from the insert.

In order to solve such a problem, a tubular insert into which a resin tube is removably inserted and a collet formed in a tubular shape having a diameter larger than this insert are provided in the joint body. A one-touch joint may be used in which the resin tube is retained and engaged only by inserting the resin tube into the annular gap formed by the insert and the collet.

In such a one-touch joint, the collet is bited into the outer peripheral surface of the resin tube externally inserted into the insert so that the resin tube is retained and engaged. In addition, when the collet is pushed into the joint body, the collet bite can be released, which has the advantage that the resin tube can be easily pulled out from the joint body when necessary.

However, since it is extremely difficult to push in and operate a collet with a small wall thickness that is externally inserted into the resin tube, there is a problem that the workability of attaching and detaching the resin tube cannot be necessarily improved.

[0007]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and a resin for a one-touch joint is provided by providing a removal tool capable of easily and accurately pushing and operating the collet of the one-touch joint having the above-described configuration. It is an issue to improve the workability of removing the tube without impairing the workability of mounting the tube.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a removal tool according to the present invention is a cylinder that bites into the outer peripheral surface of a resin tube that is removably inserted into a cylindrical insert provided in the joint body and retains and engages the resin tube. The removal tool for pushing the collet-shaped collet into the joint body to release the bite of the collet is an engaging part provided with a guide groove having a width substantially the same as the outer diameter of the resin tube, and this engaging part. The feature is that it is composed of handles that are connected to each other.

[0009]

[Action]

 When the resin tube is inserted into the guide groove provided in the engaging part by the handle of the removal tool and moved to the joint body side, the resin tube guides the engaging part of the collet. It is possible to move easily and surely to the outer end. If the tool is moved closer to the joint body while the engaging part of the removal tool is kept in contact with the end of the collet, the collet is pushed into the joint body by the engaging part of the tool and the resin is pushed. The bite into the tube is released.

Therefore, if the resin tube is pulled while the collet is pushed in using the tool, the resin tube can be easily pulled out from the insert. When connecting the resin tube, the resin tube may be pushed into the annular gap formed by the insert and the collet to bite the collet into engagement.

That is, according to the removal tool of the present invention, the engagement portion can be reliably brought into contact with and engaged with the end portion of the collet using the resin tube as a guide. Therefore, even if the collet is downsized or thinned to prevent the resin tube from being pulled out by mischief, the collet can be easily and surely pushed into the resin tube by using the removal tool according to the present invention. The bite of can be canceled. Therefore, the resin tube can be easily removed as needed without impairing the workability of attaching the resin tube to the one-touch joint.

[0012]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a removing tool according to the present invention. The removing tool 1 includes a handle 2 and an engaging portion 3, and these engaging handle 3 and the engaging portion 3 are made of a metal material. Is formed.

The handle 2 is formed in an appropriate size that can be easily and surely gripped by an operator, and a pair of left and right finger-holding holes 4 into which fingers (not shown) can be inserted are provided on the front surface of the handle 2. There is. Further, the engaging portion 3 is formed so as to project rearward from the back surface of the handle 2, and a guide groove 5 is formed in the central portion thereof. The guide groove 5 is opened at the rear end of the engaging portion 3 and has a width substantially equal to the outer diameter of the resin tube 10 described later.

FIG. 2 is a sectional view showing a specific example of a one-touch joint to which the removal tool 1 is applied. The one-touch joint 11 is provided with a joint body 12 screwed and fixed to a port of a device (not shown). The joint body 12 is formed in a tubular shape with a hexagonal tool engaging portion 13 for engaging with a tightening tool such as a spanner (not shown) formed on the outer peripheral surface, and a tubular insert 14 into which the resin tube 10 is externally inserted. Is press-fitted and fixed inside.

A tubular collet 15 covering the outer peripheral surface of the insert 14 is slidably attached to the joint body 12 to form a gap 16 having an annular cross section between the insert 14 and the collet 15. Further, by providing the engaging claw 17 which bites into the outer peripheral surface of the resin tube 10 on the inner peripheral surface of the inner end portion of the collet 15, the engaging claw 17 bites into the outer peripheral surface of the resin tube 10 externally inserted into the insert 14. The resin tube 10 is engaged so as to prevent the resin tube 10 from coming off.

Further, by forming the conical surface 19 on the inner end surface of the cap 18 for slidably attaching the collet 15 to the joint body 12, the collet 15 is pushed into the joint body 12 so that the inner end surface becomes the conical surface 19. When pressed, the conical surface 19 causes the engagement claw 17 to elastically deform to the outer periphery due to the diameter-expanding action, and the bite into the resin tube 10 is released. Reference numeral 20 is an elastic seal that acts as a seal between the joint body 12 and the resin tube 10 externally inserted into the insert 14, and 21 is a ring attached to the outer end of the collet 15.

When the resin tube 10 is detached by using the detaching tool 1 having the above structure, the handle 2 of the detaching tool 1 is held and the resin tube 10 is placed in the guide groove 5 provided in the engaging portion 3. Insert it (state of Figure 2). After the removal tool 1 is set in this manner, the removal tool 1 is moved closer to the joint body 12 along the resin tube 10 so that the engaging portion 3 is attached to the ring 21 attached to the tip of the collet 15. Abut.

When the tool 1 is moved closer to the joint body 12 while the engaging portion 3 of the removal tool 1 is held in contact with the ring 21, the ring 21 is moved by the engaging portion 3 of the tool 1. When pressed, the collet 15 is pushed into the joint body 12. Then, the inner end of the collet 15 is pressed against the conical surface 19 and spreads, so that the engaging claw 17 is pushed outward and the bite into the resin tube 10 is released. Therefore, if the resin tube 10 is pulled while the collet 15 is pushed in using the tool 1, the resin tube 10 can be easily pulled out from the insert 14.

When connecting the resin tube 10, the resin tube 10 is pushed into the annular gap 16 formed by the insert 12 and the collet 15. Then, the collet 15 is also pushed in along with this pushing, and the engaging claw 17 is moved to the outside by the spreading action of the conical surface 18. Then, when the resin tube 10 is fully pushed into the gap 16 and pulled slightly, the collet 15 is about to be pulled out.

However, when the collet 15 is pulled out in this way, the engaging claw 17 is pushed back inward by the contact with the cap 18 and bites into the resin tube 10, so that the resin tube 10 is prevented from coming off the insert 14. Engaged.

That is, in the removal tool 1 according to the present invention, the engagement portion 3 can be reliably brought into contact with and engaged with the end portion of the collet 15 using the resin tube 10 as a guide. For this reason, even when a small and thin wallet collet 15 is provided to prevent the resin tube 10 from being pulled out by mischief, the collet 15 can be easily and accurately pushed into the resin tube 10. Since the bite of the resin tube 10 can be released, the resin tube 10 can be easily removed when necessary. Further, when the resin tube 10 is attached, it is sufficient to push the resin tube 10 into the gap 16 formed by the insert 14 and the collet, and therefore the workability of attaching the resin tube 10 does not deteriorate.

In the embodiment, the ring 21 is attached to the outer end of the collet 15 to enhance the engagement stability with the engaging portion 3, but the ring 21 is not necessarily provided. Further, in the embodiment, the handle 2 of the removal tool 1 is provided with the finger hooking hole 4 to increase the degree of freedom of usage and to reduce the weight of the tool 1, but the finger hooking hole 4 is not always necessary.

Further, in the embodiment, the case where the resin tube 10 is pulled out from the one-touch joint 11 for connecting the resin tube to the port of various devices has been described. In short, the resin tube 10 is pulled out when the collet 15 is pushed and operated. It can be used when removing the resin tube from the joint that connects the resin tubes to each other.

[0024]

[Effect of device]

 As is clear from the above description, the removal tool according to the present invention is configured such that the resin tube is used as a guide so that the engaging portion can be surely brought into contact with the end of the collet. Therefore, even if the collet is made small and thin to prevent the resin tube from being pulled out by mischief, the collet can be easily and reliably pushed in to release the bite into the resin tube. For this reason, the resin tube can be easily removed as needed without impairing the workability of attaching the resin tube to the one-touch joint.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a removal tool according to the present invention.

FIG. 2 is a cross-sectional view showing a specific example of a one-touch joint to which the removal tool shown in FIG. 1 is applied.

[Explanation of symbols]

 1 Removal Tool 2 Handle 3 Engagement Part 4 Finger Hooking Hole 5 Guide Groove 10 Resin Tube 11 One-touch Joint 12 Joint Body 13 Tool Engagement Part 14 Insert 15 Collet 16 Gap 17 Engaging Claw 18 Cap 19 Conical Surface 20 Elastic Seal 21 Ring

Claims (1)

[Scope of utility model registration request] 1. An operation of pushing a cylindrical collet into the joint body, which bites into the outer peripheral surface of a resin tube removably inserted into a cylindrical insert provided in the joint body to prevent the resin tube from engaging with the joint body. A removal tool for releasing the bite of the collet, wherein an engaging portion provided with a guide groove having substantially the same width as the outer diameter of the resin tube is continuously provided on the handle. Removal tool.