CN1305071A

CN1305071A - Protective sleeve of confirming bole in tube joint

Info

Publication number: CN1305071A
Application number: CN00117639A
Authority: CN
Inventors: 池田浩二; 进藤孝彦; 山田晃; 石田尚树
Original assignee: KITAMURA GOKIN SEISAKUSHO
Current assignee: KITAMURA GOKIN SEISAKUSHO; Kitamura Alloy Manufacturing Co Ltd
Priority date: 1999-11-29
Filing date: 2000-05-18
Publication date: 2001-07-25
Anticipated expiration: 2020-05-18
Also published as: JP2001153278A; JP3538090B2; KR20010049243A; KR100363956B1; CN1178016C

Abstract

Provided is a protective sleeve of confirming bole in tube joint, wherein cylindrical guide parts 9, 9a are disposed on the fitting main bodies 1, 1a, 1b, a ring 17 is fit between the nuts 13, 13a and the cylindrical guide parts 9, 9a, confirmation holes 5, 5a are penetrately disposed on the fitting main bodies 1, 1a, 1b and the nuts 13, 13a, a connecting pipe 21 is externally fitted on the guide parts 9, 9a by inserting the connecting pipe 21 from an opening part 15 of the nuts 13, 13a, translucent or transparent protective covers 6, 6a, 6b to cover confirmation holes 5, 5a are installed on fitting main bodies 1, 1a, 1b or nuts 13, 13a.

Description

Confirm the protecting jacket in hole in the pipe joint

The pipe joint that the present invention relates to a kind ofly can to confirm from the outside to be used to supply water, whether the connecting tube of heat supply water etc. normally connects.

Illustrated among Fig. 8 and a kind ofly existingly can confirm to be used for to supply water the pipe joint whether connecting tube of heat supply water etc. normally connects from the outside.When carrying out simple declaration according to Fig. 8, pipe joint 40 is by having the sleeve pipe 41 that allows the sleeve 43 that connecting tube 49 inserts, be contained in Sealing 45 in the slotted eye 44 that takes shape on sleeve 43 peripheries, be formed with in sleeve pipe 41 inboards towards the circle 46 of the groove 47 of nipping of sleeve 43 and the cap 48 that is used for fastening ring 46 and constitute, penetratingly be provided with a plurality of affirmation holes 42 that can see the front end that inserts the connecting tube 49 in the sleeve pipe 41 on the side face of sleeve pipe 41.When after being screwed to cap 48 on the sleeve pipe 41, inserting connecting tube 49 between sleeve 43 and the cap 48, circle 46 the groove 47 of nipping is nipped on the outer circumferential face of connecting tube 49 and fix, can confirm personally by affirmation hole 42 whether the front end of connecting tube 49 normally is inserted in the sleeve 43.

In the aforementioned tube joint, just run through simply to be provided with and be used to confirm whether the connecting tube coupled situation confirms the hole normally, in the occasions such as building site of using pipe joint, usually be easy to generate foreign matter, foreign matter enters in the pipe joint through the affirmation hole and sticks on the Sealing that is coated with grease, leak thereby cause, therefore exist the uncomfortable situation that load increases when inserting connecting tube.

The problem that the present invention will solve is to prevent that in penetratingly offering the pipe joint that can see the normal insertion of connecting tube foreign matter is through confirming the hole intrusion.

Technological scheme 1 of the present invention is to confirm the protecting jacket in hole in a kind of pipe joint; wherein adapter body is provided with the cylindric guide portion of outer embedding connecting tube; be provided with circle being screwed between nut on the adapter body and the guide portion; on adapter body or nut, offer the affirmation hole that is embedded in the connecting tube front end on the guide portion outside observing with connecting; connecting tube is embedded on the guide portion outside the opening portion insertion also of nut; can be connected on the adapter body by the outer circumferential face of circle extruded joint pipe, on above-mentioned adapter body or nut, be equipped with and cover the transparent or semitransparent protecting jacket of confirming the hole.

In technological scheme 2, above-mentioned guide portion at least with the right side face of the sagittal plane of confirming the hole on paste or be coated with painted parts.

In technological scheme 3, above-mentioned protecting jacket and circle are installed between the guide portion of adapter body and the nut abreast and it is supporting and encloses.

It in the technological scheme 1 of the present invention the protecting jacket of confirming the hole in a kind of pipe joint; wherein adapter body is provided with the cylindric guide portion of outer embedding connecting tube; be provided with circle being screwed between nut on the adapter body and the guide portion; on adapter body or nut, offer the affirmation hole that is embedded in the connecting tube front end on the guide portion outside observing with connecting; connecting tube is embedded on the guide portion outside the opening portion insertion also of nut; can be connected on the adapter body by the outer circumferential face of circle extruded joint pipe; cover the transparent or semitransparent protecting jacket of confirming the hole owing on above-mentioned adapter body or nut, be equipped with; so foreign matter can be through not confirming that the hole enters pipe joint; can prevent because of foreign matter sticks to leaking of causing on the Sealing, and or problem such as prevent from outside with connecting tube, to be embedded on the guide portion increase of time load.

In technological scheme 2, because above-mentioned guide portion is pasted on the right side face of the sagittal plane of confirming the hole at least or is coated with painted parts, even so in dim occasion, also can observe colored part, and can realize as soon as possible that connecting tube does not normally connect with pipe joint by confirming the hole.

In technological scheme 3; above-mentioned protecting jacket and circle are installed between the guide portion of adapter body and the nut abreast and it is supporting and encloses; therefore except preventing that foreign matter is through confirming that the hole is invaded; protecting jacket has also played the supporting role to circle; needn't in adapter body, make tube cylindraceous portion, can simplify the shape of adapter body, be easy to processing; improve producibility, and can reduce cost significantly.

The longitudinal sectional view of Fig. 1 when to be connecting tube received before the pipe joint.

Fig. 2 is the longitudinal sectional view of connecting tube when being connected on the pipe joint.

Fig. 3 is the X-X line longitudinal sectional view of Fig. 1.

Fig. 4 is the exploded perspective view of pipe joint.

Fig. 5 is other embodiment's a explanatory drawing.

Fig. 6 is other embodiment's a explanatory drawing.

Fig. 7 is other embodiment's a explanatory drawing.

Fig. 8 is the explanatory drawing of prior art.

Below, describe embodiments of the invention with reference to the accompanying drawings in detail.

Pipe joint A of the present invention such as Fig. 1-shown in Figure 4 have the adapter body 1 that roughly becomes columnar and be inserted with connecting tube 21, are screwed in nut 13 on the adapter body 1, are arranged on the circle 17 between nut 13 and the adapter body 1.

As depicted in figs. 1 and 2, adapter body 1 roughly becomes cylindric and has upwards formed water or flow of hot water threads a pipe 2 at inner shaft with connecting, fix it for utilizing fastened tools such as spanner, on the end periphery of its outer circumferential face, formed the joint part 7 that links to each other with other joint for for example instrument engagement portion 3 of hexagonal shape, on the periphery of the other end, form the tube portion 8 slightly thicker, on the periphery of tube portion 8, scribe convex thread 8a than joint part 7.

For can from any direction of outside all can see the front end of connecting tube 21 whether normally be inserted into be arranged on instrument hooking part 3 in retainer 4 on the vertical surface in week contact, in the instrument hooking part 3 of adapter body 1, on side face, equally spaced run through being provided with a plurality of affirmations hole 5 (being three in the present embodiment) as illustrated in fig. 3.

On interior all sides of tube portion 8, be provided with the cylindric guide portion 9 thinner than connecting tube 21 according to predetermined interval.The front end of guide portion 9 is exposed at the front of a portion 8, axially is formed with slotted

eye

10,10 on the outer circumferential face that exposes side by side, and the

identical Sealing

11,11 of shape has been installed respectively in slotted eye 10,10.In addition, slotted eye and Sealing can only have one, but a plurality of performance of watertightness that improve are set.

Affirmation hole 5 sagittal planes with instrument hooking part 3 between tube portion 8 and guide portion 9 are equipped with protecting jacket 6 over the ground.Protecting jacket 6 prevents that foreign matter is through confirming that hole 5 enters and sticks on the side face of guide portion 9; it is to be made by transparent or semitransparent synthetic resin; and as shown in Figure 4; be to constitute by seamlessly clogging the cylindrical part 6c that respectively confirms hole 5, the bottom surface sections 6d that contacts with retainer 4 from inside one side of instrument hooking part 3, the opening 6e that runs through bottom surface sections 6d central authorities is sleeved on the guide portion 9.

At the whole outer circumferential face of guide portion 9 or only paste on the right side face of the sagittal plane of confirming hole 5 or be coated with the painted parts 12 that have reflective, fluorescence or hold the light function, so that in dim occasion, also can observe by confirming hole 5.Therefore, when connecting tube 21 is embedded on the guide portion 9 outside not, can be from confirming hole 5 and seeing painted parts 12 reliably by transparent or semitransparent protecting jacket 6.

Sealing 11 is made by the rubber elastomeric material for preventing to leak, be coated with grease in order to improve lubricity, when connecting tube 21 by outside Sealing 11 distortion when being embedded on the guide portion 9, so the certain waterproof ground of Sealing closely is attached on the inner peripheral surface of connecting tube 21.

Nut 13 forms the internal thread part 14 on the 8a of convex thread portion be screwed in adapter body 1 in the inner peripheral surface ingress, formed towards the diminishing conical surface 15 of opening portion 16 diameters that inserts connecting tube 21 at the most end of internal thread part 14.

Circle 17 is inserted into the inboard of nut 13 conical surfaces 15, and as shown in Figure 4, on an axial part, formed seam 18, therefore diameter can enlarge and dwindle, the concave-convex shape that is formed with the conical surface 15 that is easy to insert connecting tube 21 and extruding, connecting tube 21 outer circumferential faces of nipping within it on the side face groove 20 of nipping.Therefore, owing to circle 17 enlarged-diameter when inserting connecting tube 21 is easy among the insertion tube joint A, when applying the active force that connecting tube 21 is extracted from pipe joint A, circle 17 reduced, the groove 20 of nipping is nipped dearly in the outer circumferential face of connecting tube 21 and can not be extracted.

Connecting tube 21 is made by resins such as polypropylene, polyethylene, it is inserted in the space that forms between the guide portion 9 of adapter body 1 and the nut 13 and waterproof extraterrestrial being embedded on the guide portion 9, and when the front end of connecting tube 21 be inserted into be arranged on instrument hooking part 3 in retainer 4 on week when contacting, cover in the instrument hooking part 3 of adapter body 1 and on the side face of affirmation hole 5 radial directions of guide portion 9, paste or the colored part 12 of coating.

In the present invention, in the time of connecting tube 21 being connected with pipe joint A, at first under the state that circle 17 inserts on the conical surface 15, nut 13 is screwed on the 8a of convex thread portion of adapter body 1.

Then, when as shown in Figure 1, from the opening portion 16 of nut 13 front end of connecting tube 21 is inserted and outside when being embedded on the guide portion 9 of adapter body 1, the inner peripheral surface of connecting tube 21 is close on the outer circumferential face of Sealing 11, and stops in the place of the retainer 4 that touches adapter body 1 as illustrated in fig. 2.At this moment, because connecting tube 21 is sandwiched between the guide portion 9 and circle 17 of adapter body 1, and enclose the outer circumferential face of 17 the conical surface 19 extruded joint pipes 21, the groove 20 of nipping is nipped in the outer circumferential face, connecting tube 21 is squeezed on the outer circumferential face of guide portion 9, so Sealing 11 has played seal action really, only otherwise unclamp nut 13, just can not extract connecting tube.

Be arranged on the affirmation hole 5 on the side face of instrument hooking part 3 through perforation and whether be inserted into the retainer 4 of adapter body 1 and contact by the front end that transparent or semitransparent protecting jacket 6 can be observed connecting tube 21; owing under the situation that does not touch retainer 4, expose the painted parts 12 of guide portion 9, get final product so continue to insert connecting tube 21 inwards.

In such pipe joint A, even will from adapter body 1, extract connecting tube 21, then as long as circle 17 conical surfaces 15 along nut 13 move to opening portion 16, the groove 20 of nipping will deeper be nipped in the outer circumferential face of connecting tube 21, and the inner peripheral surface of Sealing 11 extruded joint pipes 21, thereby neither can leak and can not extract.

Fig. 5 shows other embodiment of pipe joint of the present invention, and different with the foregoing description is that protecting jacket 6a is installed on 5 outer circumferential sides of affirmation hole.Therefore other structure is same as the previously described embodiments, represents with same-sign and will describe omission in detail.So, confirm on 5 peripheries of hole, then can take off easily and stick to upward foreign matter of protecting jacket 6a, and can easily unload protecting jacket 6a if protecting jacket 6a is installed in.

Fig. 6 shows other embodiment of pipe joint of the present invention, and different with the foregoing description is not form tube portion on adapter body 1a.In this embodiment, confirm that hole 5 is not arranged on the instrument hooking part 3 of adapter body 1a, be arranged on the nut 13a that the recessed screw section 14a of nut 13a and the 8a of convex thread portion that is engraved on the instrument hooking part 3 side by side spin but run through.Be installed on the cardinal extremity periphery of guide portion 9a towards the protecting jacket 6b that confirms hole 5a, circle 17 is contacted with the end face of protecting jacket 6b, and will enclose 17 and be bearing between guide portion 9a and the nut 13a.

In the present embodiment, protecting jacket also is used for bearing ring except preventing that foreign matter from entering, and has not simplified the shape of adapter body owing to forming cylindric tube portion in the adapter body, so easy processing, producibility improves, and can realize that cost reduces.

Fig. 7 shows other embodiment of pipe joint of the present invention, and this embodiment's adapter body 1b has formed the joint part 7a that connects with other joint in the inboard of instrument hooking part 3b.

Therefore, compare with the foregoing description of joint part, can make adapter body compactly with being provided with the instrument hooking part simultaneously.

Claims

1. confirm the protecting jacket in hole in the pipe joint; wherein adapter body is provided with the cylindric guide portion of outer embedding connecting tube; be provided with circle being screwed between nut on the adapter body and the guide portion; on adapter body or nut, offer the affirmation hole that is embedded in the connecting tube front end on the guide portion outside observing with connecting; connecting tube is embedded on the guide portion outside the opening portion insertion also of nut; can be connected on the adapter body by the outer circumferential face of circle extruded joint pipe; it is characterized in that, on above-mentioned adapter body or nut, be equipped with and cover the transparent or semitransparent protecting jacket of confirming the hole.

2. confirm the protecting jacket in hole in the pipe joint as claimed in claim 1, it is characterized in that above-mentioned guide portion is pasted on the right side face of the sagittal plane of confirming the hole at least or is coated with painted parts.

3. confirm the protecting jacket in hole in the pipe joint as claimed in claim 1 or 2, it is characterized in that, above-mentioned protecting jacket with enclose between the guide portion that is installed in adapter body abreast and the nut and it is supporting and encloses.