CN101210638A - Joint for resin pipe - Google Patents
Joint for resin pipe Download PDFInfo
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- CN101210638A CN101210638A CNA2007101623334A CN200710162333A CN101210638A CN 101210638 A CN101210638 A CN 101210638A CN A2007101623334 A CNA2007101623334 A CN A2007101623334A CN 200710162333 A CN200710162333 A CN 200710162333A CN 101210638 A CN101210638 A CN 101210638A
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- pitch tube
- connecting cylinder
- cylinder portion
- joint
- ring body
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Abstract
A joint for resin tube includes: a joint body (1) containing joint drum part (10); a stop mechanism (20); a sealing body (50); an indicator (60) composed of ring body for indicating end position of the resin tube (100); a drum-shaped lid (40). The stop mechanism (20) includes: a main ring body (25); a teeth part (22) with edge angle locating on a annular protruding part (21) of a connecting drum (10). The drum-shaped lid (40) is arranged with a transparent lid body (42) and a band (43) for preventing the lid body (42) from expanding diameter and distortion. The indicator (60) has the function of setting the inserting length of the resin tube (100) as a suitable value by a annular surface (11) containing ladders tabling at an initial position on the main ring body (25) until the root of the connecting drum (10) from outside. By means of researching the stop mechanism for preventing resin tube from dropping, it is able to play higher anti-dropping performance and obtain enough large connecting intensity.
Description
Technical field
The present invention relates to be installed in the joint for resin pipe in the pipeline such as hot water supply pipe arrangement within doors, relate in particular to the described joint for resin pipe that operation has taked to improve countermeasure that is connected at the anti-avulsion effect of easy generation hole enlargement distortion or diastrophic pitch tube and water-stop, pitch tube.
Background technique
In the past, the inserting type pipe joint that is connected at the hot water supply that is formed by pitch tube and water supply piping etc. proposed a kind of anti-avulsion function of bringing into play pitch tube with the water-stop function, can confirm the pipe joint (for example with reference to patent documentation 1) of function (connect and confirm function) that pitch tube suitably is connected etc.
In the inserting type pipe joint that proposes by patent documentation 1, the tooth and make it and anti-avulsion function that withdrawal force contends with and brings into play pitch tube of nipping of the anti-avulsion ring in the outside that is entrenched in this pitch tube by nipping at the outer circumferential face that is enclosed within the pitch tube on the extended guide cylinder from joint body.In addition, the insertion guide ring of end after pusher is painted by utilizing this pitch tube when being enclosed within pitch tube on the guide cylinder, and it is pushed into to bring into play in the annulus portion around the root that is formed on described guide cylinder connect confirms function.
Patent documentation 1: TOHKEMY 2005-76854 communique
But, inserting type pipe joint as the example in the past that proposes by patent documentation 1, owing to adopted the anti-avulsion ring to be entrenched in the structure in the outside of pitch tube, so the external diameter phase strain of this pipe joint is big inserting type pipe joint is maximized, except the situation that tends to be difficult to be configured in narrow space such as position, water route within doors, also additionally the anti-avulsion environmental protection need be held in back-up ring of the tubular that certain position uses etc., correspondingly increased necessary part number, connect operation and become numerous and diverse, cost of parts increases, and the whole cost of joint also increases.
In addition, pitch tube after the connection is when the front end of guide cylinder is bent etc., mainly be by the anti-avulsion ring that is entrenched in the pitch tube outside overcome act on this pitch tube deviate from power and to the effect of this pitch tube performance anti-avulsion, the surface friction drag of guide cylinder and pitch tube is only brought into play booster action.And, at the front end of guide cylinder with pitch tube under the diastrophic situation, this diastrophic influence feed through to the anti-avulsion ring with respect to the chimeric position of pitch tube and pitch tube with respect to chimeric position of guide cylinder etc., damage initial anti-avulsion performance, might be able to not bring into play sufficient anti-avulsion effect.
So, as the inserting type pipe joint of the example in the past that proposes by patent documentation 1, exist and be difficult to the problem that problem and cost with its compact in size increase.In addition, owing to mainly bring into play anti-avulsion effect, especially, exist the problem that pitch tube after the connection might join strength under the diastrophic situation of the front end of guide cylinder descends with respect to pitch tube by the anti-avulsion ring.
Summary of the invention
The present invention does in view of these problems, its purpose is to provide a kind of joint for resin pipe, by card locking mechanism of being used for pitch tube is carried out anti-avulsion etc. is studied, even the pitch tube that is enclosed within the connecting cylinder portion also can be brought into play higher anti-avulsion performance under the diastrophic situation of the front end of this connecting cylinder portion, not only obtain enough big join strength, and, suppress necessary part number less easily with compact in size, reduce cost easily.
Joint for resin pipe of the present invention has: joint body, this joint body have the connecting cylinder portion of overcoat pitch tube; The card locking mechanism, this card locking mechanism engages to stop this pitch tube slippage with the inner surface of tube wall of pitch tube be enclosed within described connecting cylinder portion at 2 positions of the axial direction central part of described connecting cylinder portion and front end at least; Seal, sealing body are close to the outer circumferential face of described connecting cylinder portion and are enclosed within on the inner surface of tube wall of the described pitch tube in this connecting cylinder portion, give these and are close to the position water tightness; The indicator of ring body, this indicator are enclosed within the described connecting cylinder portion, by indicated the end position of this pitch tube to pusher by the end that is enclosed within the described pitch tube in the connecting cylinder portion; Tubular lid, this tubular lid from outer side covers and be entrenched in the outside that is enclosed within the pitch tube in the described connecting cylinder portion, stops the hole enlargement of pitch tube with this indicator, helps the anti-avulsion effect of described card locking mechanism.
Adopt the joint for resin pipe of this structure, the pitch tube that is enclosed within the connecting cylinder portion is subjected to anti-avulsion by the card locking mechanism, and the reliability of the anti-avulsion effect that is produced by this card locking mechanism obtains the auxiliary of tubular lid.By the effect of seal, the connection part of connecting cylinder portion and pitch tube is sealed by water tightness.In addition, the end position that is enclosed within the pitch tube in the connecting cylinder portion can directly and intuitively carry out order by indicator and recognizes.
And, especially in the present invention, because the card locking mechanism engages with the tube wall of pitch tube at 2 positions of the axial direction central part of connecting cylinder portion and front end at least with this pitch tube anti-avulsion, so even pitch tube also can be brought into play higher anti-avulsion performance under the diastrophic situation of the front end of this connecting cylinder portion, except obtaining enough big join strength, because the card locking mechanism is the inner surface of tube wall of pitch tube with respect to the engaging position of the tube wall of pitch tube, so the card locking mechanism can be configured in the inboard of pitch tube, this obtains miniaturization of size easily, and can suppress necessary part less, help to reduce cost easily.
In the present invention, described card locking mechanism preferably has: the main ring body that anti-avulsion is used, this main ring body can be in axial direction be configured in ring-type slot part on the outer circumferential face of axial direction central part of described connecting cylinder portion slidably, and can dwindle direction to enlarged-diameter and carry out resiliently deformable and have the engaging tooth that engages with the inner surface of tube wall of described pitch tube; Band corner angle tooth portion, this band corner angle tooth portion is constituted and can be engaged with the inner surface of tube wall of described pitch tube by the bight of the pitch tube direction of insertion front side of annular convex, and described annular convex is by forming on 1 position of axial direction at least at this connecting cylinder portion front end forming annular slot in the described connecting cylinder portion, and chamfer machining is carried out in the bight of the direction of insertion rear side of the pitch tube of described annular convex.
Adopt the present invention, when pitch tube being enclosed within the connecting cylinder portion, this pitch tube is successfully crossed annular convex because of the leading role of the chamfer machining position performance of annular convex.Therefore, can obtain in the insertion process of pitch tube, to be difficult to inner surface of tube wall is brought the effect of damage.In addition, when withdrawal force acted on the pitch tube that is enclosed within the connecting cylinder portion, the band corner angle tooth portion of the engaging tooth of main ring body and annular convex engaged with the inner surface of tube wall of pitch tube, and pitch tube overcomes this withdrawal force and to the pitch tube anti-avulsion thus.In addition, when the front end bending deflection of pitch tube in connecting cylinder portion, being located at connecting cylinder portion engages with the inner surface of tube wall of pitch tube and with the pitch tube anti-avulsion from the band corner angle tooth portion of on one's body annular convex, thus, the diastrophic influence of pitch tube is difficult to feed through to the position that engages with main ring body, can bring into play sufficient anti-avulsion effect, guarantee bigger join strength.
In the present invention, the plane of inclination is arranged in that described ring-type slot part is preferably additional, make with described pitch tube and climb up described plane of inclination and hole enlargement to the described main ring body that direction moves of extracting of this pitch tube.So, main ring body is followed pitch tube more and is moved to extracting direction, and the plane of inclination just makes the engaging tooth radius vector of main ring body outstanding to foreign side more, therefore, increases for the snap action of the tube wall of pitch tube and the reliability of anti-avulsion effect.
In the present invention, can adopt following structure: increase the auxiliary ring body that engages and have the engaging tooth that engages with the inner surface of tube wall of pitch tube with described annular slot at described card locking mechanism, simultaneously, this auxiliary ring body has will being enclosed within and makes it cross the inclined guide surface of this engaging tooth cover after pitch tube in the described connecting cylinder portion is directed to the tip of described engaging tooth.So, front end in connecting cylinder portion, described band corner angle tooth portion and auxiliary ring body engage with 2 positions of the inner surface of tube wall of pitch tube, especially, the diastrophic influence of pitch tube is difficult to feed through to the position that engages with main ring body, therefore to the further performance reliably of anti-avulsion effect of pitch tube, can guarantee bigger join strength.In the present invention, described seal preferably is made of seal ring, described seal ring is configured in the annular recessed portion on the outer circumferential face that is arranged in described connecting cylinder portion, described annular recessed portion is positioned at the mutual of described ring-type slot part and described annular slot, and described seal ring is close to the internal surface of this annular recessed portion and the inner surface of tube wall of described pitch tube with the state of Elastic Contact.So, can guarantee sufficiently long interval between the sealing position that seal ring forms and the front end of connecting cylinder portion, therefore, the diastrophic influence of described pitch tube is difficult to feed through to described sealing position, and this situation helps to improve the watertight stability of seal ring.
In the present invention, described tubular lid is preferably by tubular and transparent lid body be embedded in outward on this lid body and constitute with the band that stops this lid body hole enlargement to be out of shape, and is like this, can visually see by the described indicator of pitch tube to pusher through transparent lid body.
In the present invention, preferably adopt following structure: the described indicator that is made of ring body is enclosed in described pitch tube end in the described connecting cylinder portion to pusher, from outside be entrenched in the operating position that initial position on the described main ring body moves to the circumferentia of the band ladder that root had of running into described connecting cylinder portion, the insertion length of described pitch tube fixed on appropriate value, simultaneously, described indicator is painted to the color that white and black etc. are different from described lid body color.So, the indicator of initial position and main ring body are outer chimeric, so when pitch tube being enclosed within the connecting cylinder portion, main ring body can not be given prominence to and hinder the insertion operation of pitch tube.Therefore, main ring body can not hinder the insertion operation of pitch tube, can successfully carry out the insertion operation of pitch tube.In addition, by the end of pitch tube to the indicator of pusher move to the band ladder that root had of running into connecting cylinder portion circumferentia and with the insertion length setting of pitch tube operating position at appropriate value, so for the user who inserts operation (worker), as long as insert pitch tube till indicator is run into the described snap-latch surface that has a ladder, just can the advantage that improve operation be arranged with the insertion length setting of pitch tube at appropriate value.
In the present invention, best described band covers to conceal and make to run into outside the position that the described circumferential described indicator that has ladder exposes at the described indicator with initial position and is embedded on the described lid body.So, indicator is covered by band at its initial position and conceals, at operating position as mentioned above, seeing through transparent lid body can make eyes see, therefore, before use, the indicator of this joint for resin pipe is very eye-catching and can not be difficult to see, in addition, this convenience is arranged: confirm with eyes whether the insertion length of pitch tube after pitch tube connects is appropriate value easily.In addition, for the pitch tube that indicator is enclosed within to pusher in the connecting cylinder portion, supported from the outside by the tube wall tegmentum body of main ring body radius vector to foreign side's pushing, this lid body is strengthened by band and is not produced the hole enlargement distortion, therefore, be difficult to take place that pitch tube produces hole enlargement and the situation of damaging the anti-avulsion effect of main ring body.In addition, band is also brought into play and is made the hole enlargement of pitch tube generation be out of shape the effect that is suppressed to the temperature variation of the hot water that flows through pipeline or transmission of heat, therefore, also be difficult to take place make pitch tube produce the situation of the anti-avulsion effect of hole enlargement distortion and infringement main ring body because of the temperature variation or the transmission of heat of hot water.
In the present invention, best described lid body combines with described joint body, extends to the front end of described connecting cylinder portion simultaneously, and the front end of described lid body arrives the position that covers described annular slot.So, the reliability of the anti-avulsion effect that pitch tube is produced at the front end of connecting cylinder portion is improved by the lid body that extends to described connecting cylinder portion front end.
In the present invention, the external diameter of described main ring body its engaging tooth under nature is greater than the internal diameter of pitch tube, and this main ring body produces undergauge and allows this pitch tube pass through when being embedded on this main ring body outside the pitch tube on being enclosed within described connecting cylinder portion, simultaneously described main ring body has inclined guide surface, while described inclined guide surface makes the pitch tube that is enclosed within the described connecting cylinder portion produce undergauge, make it cross this engaging tooth after described pitch tube being directed to the tip of engaging tooth.So not only can successfully insert pitch tube, and obtain higher anti-avulsion performance.
In the present invention, 1 circumferential position of best described main ring body has scarce circle portion, and a plurality of positions of the devices spaced apart in week form the breach that this main ring body undergauge is used in this main ring body.So, the breach on a plurality of positions in the interior week by being formed on main ring body and make this main ring body undergauge easily improves the insertion operation of pitch tube.
In the present invention, described main ring body also can have composite structure, this composite structure comprises cylindrical portion that resin constitutes and the described engaging tooth that is made of the metal that overlaps in this cylindrical portion outside, when main ring body is made this composite mechanism, because the engaging tooth that metal constitutes is harder than pitch tube, so engaging tooth is improved with respect to the engaging of the tube wall of pitch tube, the anti-avulsion performance of main ring body is improved.
As mentioned above, adopt joint for resin pipe of the present invention, even be enclosed within the connecting cylinder portion pitch tube the front end of this connecting cylinder portion produce also can utilize the card locking mechanism under the diastrophic situation be used for bringing into play higher anti-avulsion performance, obtain enough big join strength.In addition, the structure by adopting the card locking mechanism to engage with the inner surface of tube wall of pitch tube obtains miniaturization of size easily, and, can suppress necessary part less, obtain the effect that reduces cost easily.In addition, also can constitute and to obtain to represent that by indicator main ring body that the indicator of the effect of end position of pitch tube and initial position stops the card locking mechanism is towards the outstanding effect of foreign side radially etc., therefore, by making this structure, the connection operation of pitch tube with respect to connecting cylinder portion also can be improved.
Description of drawings
Fig. 1 be expression the invention process form joint for resin pipe user mode partly cut open side view.
Fig. 2 is the half sectional view of user mode of the variation of this joint for resin pipe of expression.
Fig. 3 is the partial, longitudinal cross-sectional that the major component of Fig. 1 is amplified.
Fig. 4 is the local vertical profile side view that is used to illustrate the effect of card locking mechanism shown in Figure 3.
Fig. 5 is the local vertical profile side view that is used to illustrate the effect of card locking mechanism shown in Figure 3.
Fig. 6 (A) is the plan view of main ring body, (B) is the local amplification view along VIB-VIB line in (A).
Fig. 7 (A) is the plan view of the main ring body of variation, (B) is the local amplification view along VIIB-VIIB line in (A).
Fig. 8 (A) is the plan view of the main ring body of another variation, (B) is the plan view of the main ring body of another variation.
Fig. 9 (A) is the local amplification view along IXA-IXA line among Fig. 8 (A), (B) is the local amplification view along IXB-IXB line among Fig. 8 (B).
Figure 10 is the local vertical profile side view of the joint under the original state.
Figure 11 is the local vertical profile side view of the joint of the end of the pitch tube state of running into indicator.
Figure 12 is the local vertical profile side view of the joint under pitch tube and the joint coupled condition.
Figure 13 is the vertical profile side view of the major component of the state of expression when pitch tube is enclosed within the connecting cylinder portion.
Figure 14 is the vertical profile side view that expression will be enclosed within the major component of the state of pitch tube when extracting the direction stretching in the connecting cylinder portion.
Figure 15 is the half sectional view of major component of the user mode of another example.
Embodiment
Fig. 1 be expression example of the present invention joint for resin pipe user mode partly cut open side view, Fig. 2 is the half sectional view of user mode of the variation of this joint for resin pipe of expression.
Among Fig. 1, joint for resin pipe (hereinafter referred to as " joint ") A is, has connecting cylinder cylindraceous portion 10 on the joint body of being made by cutting 1 integratedly, and the pitch tube 100 of polyethylene pipe etc. is enclosed within this connecting cylinder portion 10.And, be enclosed within pitch tube 100 in the connecting cylinder portion 10 at 2 positions of the axial direction central part of this connecting cylinder portion 10 and its front end by card locking mechanism 20 anti-avulsions described later, in addition, assist the tubular lid 40 of anti-avulsion effect of the card locking mechanism 20 at these 2 positions to be entrenched in the outside of pitch tube 100, simultaneously connecting cylinder portion 10 and pitch tube 100 clamp seal 50 each other, give above-mentioned member mutual water tightness at the position that is provided with of sealing body 50.In addition, has the circumferentia 11 of band ladder, in the circumferentia 11 of this band ladder and be enclosed within that to sandwich ring body between the end face 110 of the pitch tube 100 in the connecting cylinder portion 10 be indicator 60 at the root of connecting cylinder portion 10.On joint body 1, described connecting cylinder portion 10 clips instrument engagement portion 12 and is side-prominent to one, have the connection mouth 13 of the piping-member that connects other joint and pipe arrangement etc. on the concentric shape of opposite side ground, the shape of connection mouth 13 and structure thereof are not limited to illustrative example certainly.
In this joint A, described card locking mechanism 20 adopts the structure that can engage with the inner surface of tube wall 101 of described pitch tube 100, therefore, will not block the outside that locking mechanism 20 is provided in pitch tube 100, correspondingly makes joint A miniaturization easily.Detailed structure below with reference to Fig. 1, Fig. 3～Fig. 5, Fig. 6～Fig. 9 instruction card locking mechanism 20.
Fig. 3 is the local vertical profile side view after Fig. 1 major component is amplified, and Fig. 4 and Fig. 5 are used to illustrate that card shown in Figure 3 ends the local vertical profile side view of structure 20 effects, and Fig. 6～Fig. 9 represents that the key element that card ends structure 20 is a main ring body 25.
As shown in Figure 1, card locking mechanism 20 is configured in 2 positions of axial direction central part He its front end of connecting cylinder portion 10, the card locking mechanism 20 of the front end of connecting cylinder portion 10 only forms by connecting cylinder portion 10 is necessarily processed, and the card locking mechanism 20 of the axial direction central part of connecting cylinder portion 10 is made of the main ring body 25 of connecting cylinder portion 10 necessarily being processed and is configured in this working position.
In the card locking mechanism 20 at 2 positions, be configured on the front end of connecting cylinder portion 10 card locking mechanism 20 as shown in Figure 3, form by each the bight of pitch tube 100 direction of insertion front sides of annular convex 21 on 2 positions of the front end that is located at this connecting cylinder portion 10 along axial direction side by side.Promptly, form annular slot 14 by near the position front end that connects protuberance 10 and form described annular convex 21, chamfer machining etc. is not carried out in described bight for this annular convex 21, leave strip corner angle shape still forms the band corner angle tooth portion 22 that can engage with the inner surface of tube wall 101 of pitch tube 100 by the bight of this band corner angle shape.On the contrary, implement chamfer machining (both chamfering in the bight 23 of the direction of insertion rear side of the pitch tube 100 of separately annular convex 21, also rounding (circular arc processing)), thereby, also can successfully pitch tube 100 be enclosed within the connecting cylinder portion 10 even be pressed into state gently.In illustrative example, be formed with annular convex 21 with described band corner angle tooth portion 22 along 2 positions that axial direction is arranged at the front end of connecting cylinder portion 10, and this point also can only be formed on the annular convex 21 with described band corner angle tooth portion 22 on 1 position of front end of connecting cylinder portion 10.
On the contrary, as shown in Figure 1, the card locking mechanism 20 of the axial direction central part of connecting cylinder portion 10 is by constituting the main ring body 25 of Fig. 6～shown in Figure 9 in axial direction is provided in the ring-type slot part 26 of the wide cut that connecting cylinder portion 10 outer circumferential faces are had slidably.
The integral body of the main ring body 25 of Figure 6 and Figure 7 is made by metal, and the main ring body 25 of this point image pattern 8 and Fig. 9 also can make the composite structure of metal and resin like that.That is, the main ring body 25 shown in Fig. 8 (A) overlaps in the outside of cylindrical portion 32 jagged metal engaging tooth 28 and integrated with resinous cylindrical portion 32.In addition, main ring body 25 shown in Fig. 8 (B), with metallic engaging tooth 28 and resin system engaging tooth 28 assortment engrails and metallic engaging tooth 28 is overlapped in the outside of cylindrical portion 32 and integrated, and resin system engaging tooth 28 and cylindrical portion 32 is integrally formed in the outside of this cylindrical portion 32 with resinous cylindrical portion 32.Yet, in the main ring body 25 of the composite structure shown in Fig. 8 (A), (B), even such full week that metal engaging tooth 28 is formed ring-type and be embedded in cylindrical portion 32 shown in the image pattern 9 (A), but also like that metal engaging tooth 28a is embedded in the vacancy portion of resinous engaging tooth 28b shown in the image pattern 9 (B), thereby the part has metal engaging tooth 28a.Fig. 8 (A), the state of (B) expression main ring body 25 after the direction shown in the arrow P produces undergauge.
Fig. 6～main ring body 25 shown in Figure 9 can dwindle the direction distortion to enlarged-diameter by the elasticity of giving this main ring body 25.And as shown in Figure 1, under the state in the ring-type slot part 26 that main ring body 25 is housed in connecting cylinder portion 10, the external diameter of this engaging tooth 28 when not inserting pitch tube 100 (external diameter under the nature) is slightly greater than the external diameter of connecting cylinder portion 10.And be provided with inclined guide surface 33 on the engaging tooth 28 of main ring body 25, while this inclined guide surface 33 makes it cross this engaging tooth 28 after making cover pitch tube 100 is directed to the tip of engaging tooth 28 to pitch tube 100 undergauges of connecting cylinder portion 10.
As shown in Figure 1, described seal 50 is made of the seal ring that the O shape circle with rubber system forms, and O shape ring is configured in the annular recessed portion 15 that forms on these connecting cylinder portion 10 outer circumferential faces, and this annular recessed portion 15 is between the described ring-type slot part 26 and described annular slot 14 that separate certain intervals formation in the connecting cylinder portion 10.And when being enclosed within pitch tube 100 in the connecting cylinder portion 10, the sealing ring is close to the Elastic Contact state on the inner surface of tube wall 101 of the internal surface of annular recessed portion 15 and pitch tube 100 and gives this and be close to the position water tightness.
As shown in Figure 1, described tubular lid 40 is screwed in by the internal thread 41 with its front end on the outside thread 16 of joint body 1 side and is installed on the joint body 1, and is maintained at 10 concentric positions with connecting cylinder portion.And, the described indicator 60 of the tubular that is embedded in slidably in the connecting cylinder portion 10 is arranged being formed at this tubular lid 40 and the mutual gap configuration of connecting cylinder portion 10.
Figure 10 is the local vertical profile side view of joint A that does not insert the original state of pitch tube 100, Figure 11 is the local vertical profile side view that is enclosed within the joint A under the state when running into indicator 60 of pitch tube 100 ends in the connecting cylinder portion 10, and Figure 12 is the local vertical profile side view that pitch tube 100 suitably is connected the joint A under the state on the joint A.
The internal diameter of described indicator 60 is set to the external diameter of connecting cylinder portion 10 roughly the same, and connecting cylinder portion 10 do not have and embed this connecting cylinder portion 10 and tubular under the big loosening state slidably and cover between 40 the mutual gap.In addition, this indicator 60 by described tubular lid 40 from outer side covers, as shown in the drawing when joint A is original state shown in Figure 10, be entrenched in outward on the main ring body 25.This position is the initial position of main ring body 25.Therefore, thereby 60 pairs of main ring bodies 25 of the indicator of initial position are held in and make it overcome elasticity and to produce undergauge slightly outstanding from connecting cylinder portion 10, and main ring body 25 remains on 10 concentric position with connecting cylinder portion.
As Figure 10～shown in Figure 12, in this example, tubular lid 40 has tubular and the lid body of being made by transparent resin 42, is embedded in the metallic band 43 that stops these lid body 42 hole enlargements to be out of shape on this lid body 42 outward.And lid body 42 combines with joint body 1 by described internal and external threads 41,16, and on this basis, this lid body 42 extends to the front end of connecting cylinder portion 10, and its front end arrives the position that covers described annular slot 14.In addition, band 43 is embedded in outside the indicator 60 to initial position shown in Figure 10 covers the position that conceals and make the indicator 60 of running into the circumferentia 11 of being with ladder shown in Figure 12 to expose and covers on the body 42.
When connecting pitch tube 100 on the joint A with said structure, carry out pitch tube 100 is inserted in operation in the connecting cylinder portion 10 of joint A of original state.Connecting cylinder portion 10 is set at the pipe thickness of pitch tube 100 roughly the same with the size that tubular covers 40 gap between them.
As shown in figure 11, run into the indicator 60 of initial position in the end of pitch tube 100 after, if push pitch tube 100 again, then indicator 60 is pushed backward by the end of pitch tube 100, therefore, indicator 60 breaks away from main ring body 25, and thereupon, main ring body 25 relies on its elasticity and produces the inner surface of tube wall 101 that pitch tube 100 is out of shape and runs in hole enlargement.Therefore, after indicator 60 breaks away from main ring body 25,, the inner surface of tube wall 101 of pitch tube 100 pushes while being slided with respect to main ring body 25.And, as shown in figure 12, decide the insertion length of pitch tube 100 by the circumferentia that has ladder 11 of being run into joint body 1 to the indicator 60 of pusher by pitch tube 100.This position is the operating position of indicator 60.
Therefore, as long as in advance the set positions of the length of indicator 60 and the circumferentia 11 that has ladder is become to make indicator 60 run into joint body 1 have the circumferentia 11 of ladder the time the insertion length of pitch tube 100 be appropriate value, as long as the worker carries out being enclosed within pitch tube 100 in the connecting cylinder portion 10 and pushes operation till can not pushing, just can easily set the suitable insertion length of pitch tube 100.In addition, in this example, by pushing indicator 60 from this initial position, this indicator 60 just can be deviate from from the covering stowed position of band 43, and, lid body 42 is transparent, therefore the worker can rely on range estimation to confirm to insert the position of the indicator 60 in the way at every turn, except this convenience, also has following convenience: after pitch tube 100 connects, the worker can confirm that with eyes indicator 60 runs into the situation of the circumferentia 11 that has ladder, thereby can confirm the situation that pitch tube 100 is suitably connected.Here, if in advance that indicator 60 is painted, the position of the indicator 60 when eyes are seen is eye-catching, then can improve above-mentioned convenience.When with indicator 60 when painted, the painted color that is used to bring into play above-mentioned convenience is white both, also black, the colour of green or cyan etc. again, still, painted preferably with the transparent different color of lid body 42 colors.
In this example, begin to be enclosed within the moment in the connecting cylinder portion 10 of joint A at pitch tube 100, wait as reference Fig. 3 to describe like that, owing to bight 23 chamferings of annular convex 21, so pitch tube 100 can not be stuck on this annular convex 21, can successfully be inserted.In addition, after pitch tube 100 is enclosed within the connecting cylinder portion 10 or in the nested way, when pitch tube 100 bendings, as Fig. 4 or shown in Figure 5, band corner angle tooth portion 22 and this bending direction of annular convex 21 irrespectively are fastened on the inner surface of tube wall 101 of pitch tube 100, performance stops pitch tube 100 to extracting the effect that direction moves, and therefore, the diastrophic influence of pitch tube 100 is difficult to feed through to the position of being close to the engagement position of main ring body 25 and seal 50.Therefore, there are the anti-avulsion effect of main ring body 25 generations and the water tightness effect of giving of seal 50 generations to be difficult to because of the impaired advantage of the bending deflection of pitch tube 100.
Figure 13 is the vertical profile side view of expression pitch tube 100 major component of state when being enclosed within the connecting cylinder portion 10, and Figure 14 is that expression will be enclosed within pitch tube 100 in the connecting cylinder portion 10 to the vertical profile side view of extracting direction major component of state when stretching.
As shown in figure 13, pitch tube 100 on will being enclosed within connecting cylinder portion 10 is when extracting the direction stretching, engaging tooth 28 relies on the elastic recovering force of main ring bodies 25 effectively engage with inner surface of tube wall 101 Elastic Contact of pitch tube 100, perhaps engaging tooth 28 its elastic recovering forces of dependence and on the inner surface of tube wall 101 that is fastened on pitch tube 100 of nipping.Therefore, as shown in figure 14, pitch tube 100 on will being enclosed within connecting cylinder portion 10 is to extracting direction when stretching, and main ring body 25 is climbed up the plane of inclination 29 of ring-type slot part 26 with pitch tube 100, and its engaging tooth 28 is nipped and at the inner surface of tube wall 101 of pitch tube 100 engaging power increased.Therefore, the anti-avulsion effect that main ring body 25 produces stretches pitch tube 100 with regard to increase more to extracting direction more.In addition, in this example, the position that is entrenched in the indicator 60 on the main ring body 25 outward fixes on the initial position of indicator 60, set the band 43 of tubular lid 40 in the position of the indicator 60 that covers this initial position, therefore, as Figure 13 and shown in Figure 14, when the inner surface of tube wall 101 of 25 pairs of pitch tubes 100 of main ring body suppresses,, this effect of suppressing stops by band 43 because of making the generation of the situation that pitch tube 100 and lid body 42 bloat laterally.Therefore, only preventing under the unsettled environment of effect of pitch tube 100 diameter expansion by lid body 43, even for example with the hot water of the pipeline of flowing through with pitch tube 100 and lid body 43 warm softening under such environment, also can stop the diameter expansion of covering body 43 reliably by band 43, set in advance band 43, help preventing the decline of the anti-avulsion effect that main ring body 25 produces.
The connecting cylinder portion 10 of the joint body 1 of joint A shown in Figure 2 forms this point by thin walled tube and is different from structure shown in Figure 1.In addition, in this joint A, do not make plane of inclination 29 (with reference to Fig. 1) this point in bottom surface and be different from structure shown in Figure 1 yet ring-type slot part 26.Other structure is identical with Fig. 1, acts on also identically, therefore, for avoiding repeat specification, for illustrated structural element, puts on the symbol identical with symbol among Fig. 1 and omits explanation.
Figure 15 represents other example.In this example, the structure that contains auxiliary ring body 34 this point with engaging tooth and Fig. 1 in the annular slot 14 of connecting cylinder portion 10 is inequality.Other structure is identical with Fig. 1 with effect.Should auxiliary ring body 34 have and to be enclosed within the inclined guide surface of crossing this engaging tooth after pitch tube 100 in the connecting cylinder portion 10 is directed to the tip of this engaging tooth (being equivalent to Fig. 6, Fig. 7, inclined guide surface 33 shown in Figure 8).Adopt this example,, therefore can further bring into play the anti-avulsion effect of pitch tube 100 because the above-mentioned band corner angle tooth portion 22 and engaging tooth two sides of auxiliary ring body 34 are fastened on the inner surface of tube wall 101 of pitch tube 100.
Claims (12)
1. joint for resin pipe is characterized in that having:
Joint body, this joint body have the connecting cylinder portion of overcoat pitch tube;
The card locking mechanism, this card locking mechanism engages with the inner surface of tube wall of pitch tube be enclosed within described connecting cylinder portion at 2 positions of the axial direction central part of described connecting cylinder portion and front end at least;
Seal, sealing body are close to the outer circumferential face of described connecting cylinder portion and are enclosed within on the inner surface of tube wall of the described pitch tube in this connecting cylinder portion, give these and are close to the position water tightness;
By the indicator that ring body forms, this indicator embeds described connecting cylinder portion and is subjected to being enclosed within the end pusher of the described pitch tube in the connecting cylinder portion, thereby indicates the end position of this pitch tube;
Tubular lid, this tubular lid from this indicator of outer side covers and by with the chimeric hole enlargement that stops pitch tube in the outside that is enclosed within the pitch tube in the described connecting cylinder portion, help the anti-avulsion effect of described card locking mechanism.
2. joint for resin pipe as claimed in claim 1, it is characterized in that, described card locking mechanism has: the main ring body that anti-avulsion is used, this main ring body can be in axial direction be configured in ring-type slot part on the outer circumferential face of axial direction central part of described connecting cylinder portion slidably, and can dwindle direction to enlarged-diameter and carry out resiliently deformable and have the engaging tooth that engages with the inner surface of tube wall of described pitch tube; Band corner angle tooth portion, this band corner angle tooth portion is constituted and can be engaged with the inner surface of tube wall of described pitch tube by the bight of the pitch tube direction of insertion front side of annular convex, and described annular convex is by forming on 1 position of axial direction at least at this connecting cylinder portion front end forming annular slot in the described connecting cylinder portion, and chamfer machining is carried out in the bight of the direction of insertion rear side of the pitch tube of described annular convex.
3. joint for resin pipe as claimed in claim 2 is characterized in that, the plane of inclination is arranged in that described ring-type slot part is additional, makes with described pitch tube to the described main ring body that direction moves of extracting of this pitch tube and climbs up described plane of inclination and hole enlargement.
4. as claim 2 or the described joint for resin pipe of claim 3, it is characterized in that, increase the auxiliary ring body that engages and have the engaging tooth that engages with the inner surface of tube wall of pitch tube with described annular slot at described card locking mechanism, simultaneously, this auxiliary ring body has at the pitch tube that will be enclosed within the described connecting cylinder portion and is directed to the inclined guide surface of crossing this engaging tooth behind the tip of described engaging tooth.
5. as each described joint for resin pipe in the claim 2 to 4, it is characterized in that, described seal is made of seal ring, described seal ring is configured in the annular recessed portion on the outer circumferential face that is arranged in described connecting cylinder portion, described annular recessed portion is positioned at the mutual of described ring-type slot part and described annular slot, and described seal ring is close to the internal surface of this annular recessed portion and the inner surface of tube wall of described pitch tube with the state of Elastic Contact.
6. as each described joint for resin pipe in the claim 1 to 5, it is characterized in that described tubular lid is by tubular and transparent lid body and be embedded on this lid body and constitute with the band that stops this lid body hole enlargement to be out of shape outward.
7. as each described joint for resin pipe in the claim 2 to 6, it is characterized in that, the described indicator that is made of ring body is enclosed in described pitch tube end in the described connecting cylinder portion to pusher, thereby and from outside be entrenched in circumferentia that initial position on the described main ring body moves to the band ladder that root had of running into described connecting cylinder portion the insertion length of described pitch tube fixed on the operating position of appropriate value, simultaneously, described indicator is painted to the color that white and black etc. are different from described lid body color.
8. as claim 6 or 7 described joint for resin pipe, it is characterized in that described band covers to conceal and make at the described indicator with initial position and is embedded on the described lid body outside running on the position that the described circumferential described indicator that has ladder exposes.
9. as each described joint for resin pipe in the claim 4 to 8, it is characterized in that described lid body combines with described joint body, extend to the front end of described connecting cylinder portion simultaneously, the front end of described lid body arrives the position that covers described annular slot.
As claim 2 in each described joint for resin pipe, it is characterized in that, the external diameter of described main ring body its engaging tooth under nature is greater than the internal diameter of pitch tube, and when being embedded on this main ring body outside the pitch tube on being enclosed within described connecting cylinder portion, this main ring body produces undergauge to allow this pitch tube pass through, simultaneously described main ring body has inclined guide surface, while described inclined guide surface makes the pitch tube that is enclosed within the described connecting cylinder portion produce undergauge, make it cross this engaging tooth after described pitch tube being directed to the tip of engaging tooth.
11. joint for resin pipe as claimed in claim 10 is characterized in that, 1 circumferential position of described main ring body has scarce circle portion, and a plurality of positions of the devices spaced apart in week form the breach that this main ring body undergauge is used in this main ring body.
12. as each described joint for resin pipe in the claim 2 to 11, it is characterized in that described main ring body has composite structure, this composite structure comprises cylindrical portion that resin constitutes and the described engaging tooth that is made of the metal that overlaps in this cylindrical portion outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006355262 | 2006-12-28 | ||
| JP2006355262A JP4359704B2 (en) | 2006-12-28 | 2006-12-28 | Plastic pipe fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101210638A true CN101210638A (en) | 2008-07-02 |
Family
ID=39610841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101623334A Pending CN101210638A (en) | 2006-12-28 | 2007-09-28 | Joint for resin pipe |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4359704B2 (en) |
| CN (1) | CN101210638A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472423A (en) * | 2010-02-10 | 2012-05-23 | 科-可利特合成材料有限责任公司 | Device for connecting a plastic tube to a connection nipple |
| CN106369155A (en) * | 2015-07-23 | 2017-02-01 | 本田技研工业株式会社 | A working oil supplying pipe |
| CN107166133A (en) * | 2017-05-13 | 2017-09-15 | 黄德修 | Repair the pipeline direct pipe fitting of pincers-pressed type |
| CN107799097A (en) * | 2016-08-31 | 2018-03-13 | 天津市津宝乐器有限公司 | Drum drum circle of advancing bindiny mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5091849B2 (en) * | 2008-12-15 | 2012-12-05 | 株式会社パイオラックス | Pipe fitting |
| JP5227852B2 (en) * | 2009-03-09 | 2013-07-03 | 株式会社オンダ製作所 | Fitting |
| JP5554556B2 (en) * | 2009-12-22 | 2014-07-23 | 株式会社キッツ | One-touch fitting for resin pipe |
| JP6168465B2 (en) * | 2012-10-02 | 2017-07-26 | 株式会社オンダ製作所 | Pipe fitting |
| JP2020041631A (en) * | 2018-09-12 | 2020-03-19 | 日立金属株式会社 | Pipe joint |
| JP7187296B2 (en) * | 2018-12-25 | 2022-12-12 | 株式会社クボタケミックス | conversion fitting |
| JP7393214B2 (en) | 2020-01-15 | 2023-12-06 | ショーボンドマテリアル株式会社 | Spacer for checking the tightness of pipe fittings |
| JP7458193B2 (en) | 2020-01-27 | 2024-03-29 | 株式会社ブリヂストン | Composite pipe and composite pipe connection structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131090U (en) * | 1980-03-07 | 1981-10-05 | ||
| JPS5939386U (en) * | 1982-09-06 | 1984-03-13 | 日本鋼管継手株式会社 | Retainer ring for pipe fittings |
| JP2730753B2 (en) * | 1989-03-10 | 1998-03-25 | 積水化学工業株式会社 | Pipe fittings |
| JPH0386280U (en) * | 1989-12-21 | 1991-08-30 | ||
| JPH0728473Y2 (en) * | 1992-06-23 | 1995-06-28 | 株式会社トヨックス | Hose fittings |
| JPH0942239A (en) * | 1995-07-26 | 1997-02-10 | Toho Kinzoku Kk | Structure of joint for steel pipe |
| JPH1096491A (en) * | 1996-09-24 | 1998-04-14 | Sekisui Chem Co Ltd | Socket structure of pipe joint |
| JPH10169860A (en) * | 1996-10-08 | 1998-06-26 | Sekisui Chem Co Ltd | Pipe detachment preventive member |
| JP3430222B2 (en) * | 1998-01-09 | 2003-07-28 | 日本鋼管継手株式会社 | Pipe fittings |
| JP2000304181A (en) * | 1999-02-19 | 2000-11-02 | Toyoda Gosei Co Ltd | Hose coupling structure |
| JP2001082651A (en) * | 1999-09-10 | 2001-03-30 | Higashio Mech Co Ltd | Joint structure for telecommunication cable conduit |
| JP4599043B2 (en) * | 2003-09-03 | 2010-12-15 | Ｊｆｅ継手株式会社 | Plug-in fittings |
| JP4477888B2 (en) * | 2004-02-05 | 2010-06-09 | 本田技研工業株式会社 | Tube connection of fuel tank |
| JP4653562B2 (en) * | 2005-05-31 | 2011-03-16 | 株式会社イデアリンク | Plug-in type fittings |
| JP4352179B2 (en) * | 2005-06-10 | 2009-10-28 | 株式会社三栄水栓製作所 | Resin pipe joint |
-
2006
- 2006-12-28 JP JP2006355262A patent/JP4359704B2/en active Active
-
2007
- 2007-09-28 CN CNA2007101623334A patent/CN101210638A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472423A (en) * | 2010-02-10 | 2012-05-23 | 科-可利特合成材料有限责任公司 | Device for connecting a plastic tube to a connection nipple |
| CN102472423B (en) * | 2010-02-10 | 2015-11-25 | 科-可利特合成材料有限责任公司 | For plastic tube being connected to the device on jointing |
| CN106369155A (en) * | 2015-07-23 | 2017-02-01 | 本田技研工业株式会社 | A working oil supplying pipe |
| CN106369155B (en) * | 2015-07-23 | 2018-06-22 | 本田技研工业株式会社 | Working oil supply pipe |
| CN107799097A (en) * | 2016-08-31 | 2018-03-13 | 天津市津宝乐器有限公司 | Drum drum circle of advancing bindiny mechanism |
| CN107166133A (en) * | 2017-05-13 | 2017-09-15 | 黄德修 | Repair the pipeline direct pipe fitting of pincers-pressed type |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008164090A (en) | 2008-07-17 |
| JP4359704B2 (en) | 2009-11-04 |
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