CN1098990C - Joint and method of manufacturing the same - Google Patents

Abstract

The present invention relates to a pipe joint device of a hose, etc., which is composed of a pair of main bodies 1a, 2b of a pipe joint with the same structure without the difference of yin-yang pieces. The front end surface of each main body of the pipe joint forms a sealing surface 5, and a plurality of jogged convex parts 8 and joggled concave parts 7 forming among the joggled parts 8 are formed at the side of the front end part of the main body of the pipe joint. The joggled convex parts 8 and the joggled concave parts 7 are complementally joggled into the joggled concave parts 7 and the joggled convex parts 8 of the other side of the other main body of the pipe joint in the axial direction. Besides, one side surface 8a of the joggled convex parts 8 formes lock hook parts 9, the lock hook parts 9 are mutually locked along the circumferential direction and combined with the pair of main bodies 1a, 1b of the pipe joint, and at least two side surfaces 8a, 8b of the joggled convex parts 8 are formed by radial surfaces of central axes of the main bodies of the pipe joint.

Description

Pipe connector

Technical field

The present invention relates to pipe connector, the flexible pipe that for example is used for fire hose etc. interconnects, the perhaps pipe connector that is connected with other machines such as pumps of flexible pipe, or the pipe connector of connection miscellaneous part, and then, if in addition specific, then the present invention relates to the piecing devices that the main body of a pair of same structure distinguished by no female part male part constitutes to the present invention.

Background technique

Existing pipe connector, for example existing fire hose insert type pipe connector has negative and positive part difference in the pair of pipes adapter body of its combination, be male part and the opposing party is constituted by female part by a side, and between the male part, between the female part can not in conjunction with.Therefore, for example when fire-fighting operation, when drawing back most fire hoses and mutually combining, drawing back fire hose mistake has corresponding possibility between the female part or between the female part, but, from rapid property and the viewpoint of reliability, the preferably ruled it out of fire-fighting operation.In addition, existing pipe connector also has a condition of poor, promptly essential two kinds of male part and female parts that structure is different, the manufacture cost height made.

For eliminating above-mentioned condition of poor, that people wish to have is that a kind of a pair of complementary shape pipe joint body by no negative and positive part difference, same structure constitutes, no negative and positive part difference and arbitrarily combination and charge and discharge operations is simple, simple in structure and the reliability height also can reduce the inserting type pipe joint device of manufacture cost simultaneously.

Can adopt following manner as having such pipe connector, promptly, make chimeric teat and chimeric recess chimeric vertically mutually, make on the formed latch hook in the side of this chimeric teat or chimeric recess portion edge circumferentially to be mutually locked, thereby this a pair of pipe joint body is combined.Shape etc. with pipe connector telescoping part of this spline structure from considering that geometrically various forms can be arranged, still, in the pipe connector of reality, needs to consider chimeric fairness and reliability etc. that the following problem that should consider is for example arranged.

At first, first problem is the above-mentioned chimeric recess of complementary shape and the being adjacent to property of chimeric teat and the problem of processability.

Such pipe connector is that above-mentioned chimeric teat and chimeric recess is chimeric mutually, therefore the fairness of its loading and unloading, chimeric reliability and intensity etc. all have a significant impact chimeric teat, chimeric recess and the precision of pinning part, so these parts all will correctly be processed through cutting.That is to say, at first, be made as the cylindrical workpiece that forms this pipe joint body, and its front end is processed into above-mentioned chimeric teat and chimeric recess with milling cutter.

This chimeric teat and chimeric recess are mutual chimeric complementary shapes, and therefore, by with given interval above-mentioned chimeric recess being cut, the part between this chimeric recess forms chimeric teat.In that being carried out milling cutter, this chimeric teat and chimeric recess add man-hour, after chimeric recess of above-mentioned workpiece cutting formation, make this workpiece only with given angular turn, the chimeric recess of the next one is carried out cutting, so just made whole chimeric teats and chimeric recess.

For example, if these chimeric teats and chimeric recess number are made six respectively, then these chimeric recesses form with the interval at 60 ° interval.Also have, as mentioned above, these chimeric teats and chimeric recess are chimeric mutually complementary approximately shapes, and therefore this chimeric teat and chimeric recess are in about 30 ° scope formation.

, in general, milling machine is fixed workpiece, and milling-tool moves along single shaft or biaxially oriented by given track, and workpiece is cut into given shape.When utilizing this milling machine to cut, usually, the face that the cutting face of each one all becomes to be parallel to each other.Therefore, for example, two inner side surface of a chimeric recess becomes parallel face mutually, and the bi-side of the chimeric teat that forms also become parallel face mutually between this chimeric recess.Therefore, for example, if the above-mentioned formed side's inner side surface of latch hook portion or side are made radiation face by this cylindrical tube adapter body central axis, then the opposing party's inner side surface or side promptly become this radiation direction are 30 ° inclination approximately.

Therefore, this pipe joint body is docked under the chimeric situation mutually, the opposing party's of the opposing party side of one side's the chimeric teat of pipe joint body and the opposing party's the chimeric recess of pipe joint body inner side surface, become and pass through oppositely each 30 ° of mobile face of the radiation face of central axis, between this side and inner side surface, formed very big gap.

If form so big interval, then promptly become and in this gap, invade sandstone and cause the bad reason of pipe joint action, simultaneously if this side and inner side surface mutually to radially chimeric with angle, then produce radial component in the reaction force betwixt.In addition, for example, at this opposing party's side or inner side surface, be provided with above-mentioned latch hook portion along circumferential pushing sealed against mechanism etc. the time, this still producing in the power circumferentially and radially component against mechanism.

, show the fairness that has produced these pipe connector loading and unloading owing to the effect of above-mentioned component unfavorable condition such as suffer damage according to various test result.That is to say, in conjunction with such pipe joint body the time, before above-mentioned latch hook portion is sealed fully, resist above-mentioned against mechanism against power, make the chimeric teat and the chimeric recess of pair of pipes adapter body carry out chimeric vertically, but, in this case, above-mentioned radial component is when each chimeric teat or chimeric recess are unbalanced, on these pipe joint bodies, produced desirable radially repulsion, the central shaft of this a pair of pipe joint body is moved or unfavorable condition such as inclination, make this combination or remove in conjunction with the time fairness suffer damage.

For eliminating this condition of poor, can consider to make an above-mentioned side's side or inner side surface, or the opposing party's side or inner side surface be with to radially about angle same, for example each 15 ° degree tilt.Yet, in a side side that forms latch hook portion or inner side surface generation flexible pipe, press and do the time spent, very big axial load effect is arranged.Therefore, making the side or the inner side surface of the latch hook portion formation of this load effect of generation is unfavorable to radially tilting.

In addition, above-mentioned chimeric teat and chimeric recess are because chimeric mutually easily, so the taper that narrows down along with forward end and inner formation circumferential width is desirable, yet, when doing like this, then the side of this chimeric teat and chimeric recess and inner side surface be to axially also becoming inclination, thereby make above-mentioned branch force direction become more complicated.And, between above-mentioned chimeric teat and chimeric recess, because it is chimeric smoothly, so can form given gap, but because the existence in this kind gap, in chimeric process, the central shaft of pair of pipes adapter body is moved easily or tilts mutually, therefore owing to above-mentioned so undesirable component effect is easy to generate the injured situation of chimeric fairness.Especially, under the situation of the pipe connector of fire hose, this in conjunction with the time fairness and reliability be important, the principal element of the above-mentioned chimeric fairness that therefore need get obstacles out of the way.

Secondly, second problem is the problem of the sealed reliability that improves above-mentioned chimeric teat latch hook portion.

That is to say, such pipe joint be the jawbone portion of latch hook portion along circumferentially being mutually locked and combination, still because from the effect of the load of outside and impact etc., the direction load that rotates between this pipe joint body is done the time spent, and the combination of this latch hook portion undesirably has been disengaged with institute.Especially, when hydraulic action not taking place in flexible pipe inside, at the locking part of above-mentioned latch hook portion the axial load effect does not take place, so be easy to undesirably remove sealed with institute.

Have, the 3rd problem be for when being applicable to this pipe connector hose coupling such as fire hose again, gets rid of the problem of its internal water during relevant harvesting flexible pipe.

Past, for example, after using fire hose, it is batched when receiving and keeping, with the pipe connector after separating between each fire hose, each root fire hose is batched.Yet, when connecting many fire hoses, batch one by one and receive and keep that this fire hose needs a lot of personnel and labour and efficient is low on long distance ground.

In order to eliminate this kind condition of poor, studying the problem of the most fire hoses that batch and receive and keep long distance connection automatically and elongate.As such device, consider to take following manner, for example, large-scale coiling machine is installed on vehicle voluntarily, batch the fire hose that is elongated automatically by this coiling machine.

Yet, when using such device, to eliminate the majority that connects the pipe connector separation of flexible pipe in advance, all to be contained in the end of every fire hose on the coiling machine at every turn, operating efficiency is low.In order to solve such problem, preferably do not separate connected fire hose and just can directly it be batched.

Yet in this case, it is difficult that the water of this fire hose inside that has connected is discharged.That is to say that when fire hose batched, flat partially batching done in its cross section, therefore needs to discharge residual its inner water.As mentioned above, separating in advance under the pipe joint situation of these fire hoses, can discharge inner water from the end of this fire hose at an easy rate.Yet, when the many fire hoses that will connect directly batch, just be not easy to discharge and remain in inner water, and produce and batch the slack-off and condition of poor such as resistance increase when batching of speed.Especially, when this fire hose pulls to the plane of inclination of rising,, make above-mentioned unfavorable condition become more remarkable owing to the effect of hydraulic head pressure is difficult to discharge internal water.

In addition, in mediation scene or building, building site etc.,, then need long distance to lay many continuously and send water tube hose for discharge water or water supply.This send water tube hose because diameter is big and the rigidity large-section can not made a mess of, so under the state of inner filling water, weight is difficult to greatly handle.Therefore, will connect before this pipe connector that send water tube hose separates and it is removed, receive and keep operation, and need to get rid of this and send water in the water tube hose.

Yet, in this process,,, all situations of discharge water are arranged also owing to inside is negative pressure even discharge inner water from water tube hose one end that send of this connection meeting the big place of difference of height and sending under the water tube hose length distance situation of laying at this.In the case, just produced and be difficult to separate this pipe joint that send water tube hose and it removed and receive and keep the very unfavorable condition of difficulty of operation.

Summary of the invention

The present invention is based on the problems referred to above and proposes, and its purpose is, a kind of pipe connector of being made up of just as the pair of pipes adapter body of a shape the complementation of no negative and positive part difference is provided, and finishes reliably and smoothly chimeric simultaneously in this kind piecing devices.

In order to achieve the above object, the pipe connector of the present invention chimeric teat and the chimeric recess that on each pipe joint body, have complementary shape.So,, form the latch hook portion that is mutually locked in a side side of this chimeric teat.

In addition, above-mentioned chimeric teat is its bi-side at least, or chimeric recess at least its inner side surface by by near about sagittal plane formation this pipe joint body central axis or its.

The chimeric teat of this form and chimeric recess, therefore its bi-side or two inner side surfaces constitute by sagittal plane, dock mutually when chimeric in this pair of pipes adapter body, and its bi-side or two inner side surfaces are radially closely chimeric mutually.Therefore, the gap between its side might be made the required minimal gap of pipe joint body loading and unloading, can prevent has obstructions such as mud or sand in this gap.

In addition, this side mutually radially subtend and near or be close to, therefore the component on the undesirable direction does not take place when chimeric, smooth and easily chimeric, and make chimeric reliable.

Also have, preferably, the side side that pipe connector of the present invention is stated chimeric teat thereon forms latch hook portion, and the opposing party's side is then along with the trend front end, and width reduces and this pipe joint body axially is inclination.Therefore, this chimeric protuberance and chimeric recess is chimeric easy and reliable.Have, in such cases, the opposing party side of this inclination is to be made of the sagittal plane by central axis again, so closely connects mutually between them and chimeric, during the gap be minimum, and the component on undesirable direction can not take place.

Also have,, be provided with locking mechanism, to prevent sealed undesirably being disengaged of above-mentioned latch hook portion if according to ideal style of the present invention.

Also have, pipe connector of the present invention has optiaml characteristics as the employed flexible pipe of water tube hose, air and oil pressure, home-use pipe connectors that send water tube hose or other flexible pipes or pipe arrangement etc. of sending such as fire hose, job site, mediation scenes.When the pipe joint as such flexible pipe or pipe arrangement uses,, be provided with the sealing mechanism of butt joint shape, to guarantee the sealing between this pipe joint body interface at the front-end face of each pipe joint body.

Also have, sealing mechanism with external pressure about equally the time, also has discharge internal flow function in interior pressure.Such sealing mechanism is for example being connected by this pipe connector under the situation that most fire hoses directly batch, and can discharge inner water automatically, therefore batches easily.In addition,, also can discharge inner water automatically even the pipe connector of other flexible pipes is when stopping to send water, so the removing or move and become easy of flexible pipe.

Also have, the manufacture method of pipe connector of the present invention is, with the aforementioned tube adapter body, at least be that its a part of cylindrical workpiece of formation is that the center keeps freely to rotate with its central axis, and keep this workpiece of cutting to form the milling-tool of chimeric recess and chimeric teat along the direction freedom of movement of this central axis ground, this workpiece is rotated around the center line in the limit, and the limit makes above-mentioned milling-tool move axially along the center, cuts the edge portion of this workpiece and makes chimeric teat and chimeric recess.

According to this kind manufacture method, the side of this chimeric teat and chimeric recess or inner side surface constitute by the sagittal plane by central axis.If according to this manufacture method, the plane shape of chimeric teat or chimeric recess under the situation of simple shapes such as rectangle, certainly, though this plane shape under trapezoidal, triangle or curved situation, this side all can constitute by the sagittal plane of central axis.

Also have, pipe connector of the present invention is not only the general pipe connectors of fluid such as above-mentioned flexible pipe or pipe arrangement, also can be used as the not parts of circulating liquid, and for example the pipe connector of structure member and miscellaneous part uses.In such cases, also can not need above-mentioned sealing mechanism certainly.

Also have, pipe connector of the present invention can be made by metallic material, synthetic resin material and other any materials.And manufacture method also is not limited to cutting as described above, also can make by casting, injection moulding and other any means.

Description of drawings

Fig. 1 is the perspective view of embodiment 1 pipe connector.

Fig. 2 is embodiment 1 side view and a longitudinal sectional view.

Fig. 3 is the plan view of a part of embodiment 1.

Fig. 4 is the locking mechanism part plan view that the part of Fig. 3 is amplified.

Fig. 5 is the locking mechanism perspective view.

Fig. 6 is the part plan view of the locking mechanism of releasing locking state.

Fig. 7 is the plan view of a pipe joint body part.

Fig. 8 is the part plan view of embodiment 2 locking mechanism.

Fig. 9 is the part plan view of embodiment 3 locking mechanism.

Figure 10 is the part plan view of locking mechanism of another kind of state of the embodiment 3.

Figure 11 is the part plan view of locking mechanism of another kind of state of the embodiment 3.

Figure 12 is the side view and the longitudinal sectional view of embodiment 4 pipe connector.

Figure 13 is embodiment 5 the longitudinal sectional view against the plunger of mechanism.

Figure 14 is the plunger plan view of Figure 13.

Figure 15 is the perspective view of viscous body of the plunger of Figure 13.

Figure 16 is the plotted curve of the plunger performance of expression Figure 13.

Figure 17 is the longitudinal sectional view of the plunger installment state of Figure 13.

Figure 18 is the sectional view of expression viscous body effect.

Figure 19 is the sectional view of another effect of expression viscous body.

Figure 20 is the sectional view of another effect of expression viscous body.

Figure 21 is the longitudinal sectional view of embodiment's 6 pipe joint bodies.

Figure 22 is the longitudinal sectional view of embodiment's 7 pipe joint bodies.

Figure 23 is the perspective view of expression pipe joint body processing method.

Figure 24 is embodiment 1 the sectional view that is used for the sealing mechanism of pipe connector.

Figure 25 is adjacent to the sectional view of state for the sealing mechanism of Figure 24.

Figure 26 is the embodiment's 2 of sealing mechanism a sectional view.

Figure 27 is the embodiment's 3 of sealing mechanism a sectional view.

Figure 28 is the embodiment's 4 of sealing mechanism a sectional view.

Figure 29 is the embodiment's 5 of sealing mechanism a sectional view.

Embodiment

Following with reference to accompanying drawing, the embodiment of the invention is described, these embodiments are the pipe joints that pipe connector of the present invention are applicable to fire hose.Certainly, pipe connector of the present invention is not limited to fire hose, general also applicable to other flexible pipe, pipe arrangement etc. pipe connector or connect the pipe connector of miscellaneous part.

Fig. 1 to Fig. 7 illustrates embodiments of the invention 1.This pipe connector is to be made of pair of pipes adapter body 1a, 1b with a kind of structure, is connected with fire hose 2a, 2b respectively on this pipe joint body 1a, 1b.

This pipe joint body 1a, 1b have a main body 3 respectively, and this main body 3 is done into about cylindrical shape, form on the side face within it to have the concavo-convex flexible pipe assembly department 4 of zigzag fashion.Then, this flexible pipe assembly department 4 is inserted in the end of this fire hose 2a, 2b.By the inner peripheral surface of this flexible pipe, by the capel (not shown) its outer circumferential face is pressed onto on this flexible pipe assembly department 4 this fire hose is installed.

Also have, on the inner peripheral surface of the front end of this main body 3, with screw columnar sealing surface parts 5 are installed, the front-end face of sealing face component 5 forms with sealing surface.The sealed member 6 of rubber bushing etc. is installed on the sealing face.Therefore, this pipe joint body 1a, 1b chimeric vertically mutually in conjunction with the time, sealing parts 6 dock mutually, by the inside of this cylindrical shell 3, keep sealing simultaneously.

Then, the front end of above-mentioned tube main body 3 integrally outstanding respectively be provided with a plurality of, 6 chimeric teats 8 for example.This protuberance 8 along circumferentially uniformly-spaced arranging, and by the sealing surface of above-mentioned sealing surface parts 5 to axially outstanding.Also have, be formed with chimeric recess 7 between this chimeric teat 8.At this pipe joint body 1a, when 1b docks vertically, the chimeric teat 8 of a side pipe joint body 1a is entrenched in the opposing party's the chimeric recess 7 of pipe joint body 1b; And the chimeric teat 8 of the opposing party's pipe joint body 1b is entrenched in the chimeric recess 7 of a square tube adapter body 1a, and is chimeric with mutual complementary shape.

Also have, in present embodiment 1, the width of above-mentioned chimeric recess 7 forms than the width of above-mentioned chimeric teat 8 slightly widely.Therefore, this chimeric teat 8 is entrenched in this chimeric recess 7 vertically, simultaneously also along circumferentially only freely rotating with specified rate.

Then, on above-mentioned chimeric teat 8 one sides' side 8a, be formed with trapezoidal hook-shaped latch hook portion 9 respectively, they mutually with the latch hook portion of the chimeric teat of the other side's one side along circumferential sealed and constitute.Therefore, under the state in this embedding part 8 is entrenched in the chimeric recess 7 of the other side's one side vertically, this pipe joint body 1a, 1b rotate mutually, one side side 8a of this chimeric teat 8 mutually near the time, then this sealed hook portion 9 as shown in Figure 3, be mutually locked and make axial pinning, this pipe joint body 1a, 1b mutually combine.Have again, form promising this part stress that prevents in the bottom of these latch hook portions 9 and concentrate the curved part 11 of usefulness.In addition, the front end corner part of the opposing party side 8b of this chimeric teat 8 forms circular arc, forms guide portion 12, and when they were chimeric, its guide portion 12 constituted to be in contact with one another.

Also have, in above-mentioned curved part 11, fill and be fixed with the resilient plugs body 11a that forms by the material of resilient flexible foam material etc., prevent this curved part 11 in foreign matter such as the husky mud of accumulation and hinder the sealed of this latch hook portion 9.

Also have, a side side 8b in this sealed teat 8, be respectively equipped with utilize plunger mechanism against mechanism 10.This abutment means 10 be by the abutment member such as the steel ball 15 of the harvesting of freely stretching in the columnar casing component 14 and make this steel ball 15 to projected direction against the plunger mechanism that is constituted against spring 16.Should imbed the opposing party side 8b of this chimeric teat 8 against mechanism 10.Therefore, this chimeric teat 8 as shown in Figure 3, chimeric recess 7 in the other side's one side is embedded fashionable, above-mentioned steel ball 15 be in contact with one another mutual pushing against, the opposing party side that makes this chimeric teat 8 is away from one another against, its result, a side side of this chimeric teat 8 mutually near against, as mentioned above, the latch hook portion 9 of this side side be mutually locked against.

This pipe joint body 1a, 1b in conjunction with the time, as shown in Figure 1,, dock vertically and above-mentioned chimeric teat 8 be entrenched in the chimeric recess 7 of the other side's one side the concentric approximately shape subtend of this pipe joint body 1a, 1b.In this case, above-mentioned chimeric teat 8 is same shape, and simultaneously six all uniformly-spaced to arrange, and therefore, this chimeric teat 8 can be chimeric with any chimeric recess 7 of the other side's one side.Thereby, the chimeric recess 7 that makes this chimeric teat 8 and the other side's one side relative to the time, the most about 30 °, as long as this pipe joint body 1a, 1b can relatively be rotated, just do not need coupled fire hose 2a, 2b exceedingly to reverse, be easy to operation.

So, when pipe joint body is chimeric vertically, contacting between the front end of a side side 8a of chimeric teat 8, the mutual gap of the opposing party side 8b tails off.Yet, form guide portion 12 in the front end corner part of this opposing party side, so the guide portion 12 of this circular arc is in contact with one another and guiding successfully mutually, therefore carrying out can preventing that the front end of this chimeric teat 8 from being tangled when chimeric.So when chimeric teat 8 was chimeric vertically, the steel ball 15 against mechanism 10 that is provided with on the 8b of this another side pushed mutually by such work, a side side of this chimeric recess 8 mutually near and against.So, during formed latch hook portion 9 goes past the opponent mutually on this side side 8a front end, as shown in Figure 3, since above-mentioned against mechanism 10 against the power effect, along circumferentially sealed and can not move vertically, this pair of pipes adapter body 1a, 1b are combined under this state mutually in this latch hook portion 9.Have, in this state, as previously mentioned, described sealed member 6 butt joint mutually pushes and the specified rate distortion takes place, and keeps sealing again.

Secondly, releasing be in bonding state pipe joint body 1a, 1b in conjunction with the time, this pipe joint body 1a, 1b with the hands be controlled and mutually with opposite spin.Rotate by this, this pipe joint body 1a, 1b are anti-above-mentioned against the rotating against power of mechanism 10, remove the sealed of the latch hook portion 9 that is in above-mentioned locked state.So meanwhile, this pipe joint body 1a, 1b are drawn back vertically mutually and are disengaged combination.

In present embodiment 1, as previously mentioned, pair of pipes adapter body 1a, 1b are same shape and size, therefore as if these pipe joint bodies of installation such as water delivery nozzle at fire hose two end part and pump, then can not have negative and positive part difference and combination arbitrarily, and can get rid of foregoing since have the negative and positive part difference and can't in conjunction with possibility.And this pipe joint body 1a, 1b have only for a kind of and make identical structure, thereby can reduce production costs.

In addition, in the present embodiment, when chimeric teat 8 and chimeric recess 7 chimeric, along circumferentially gapped be play.Because allow certain displacement when chimeric, thus operation easily, simultaneously also not because of foreign matters such as engaging-in sand can not be chimeric situation, so reliability is also high.

, have hydraulic pressure etc. to do the time spent in above-mentioned pipe connector, this pipe joint body has the huge axial load effect that is separated from each other, and this load is sealed and supported by above-mentioned latch hook portion.Therefore, be under pressure in inside and do the time spent, the combination of this pipe connector can be not to be disengaged as desired.

Yet, not having pressure in inside and do the time spent, sealed of above-mentioned latch hook portion owing to the low effect against power by mechanism etc. is kept sealed.Therefore, do not having under the state of this pressure effect, when having an effect from the impact of outside or from the torsional load of flexible pipe etc., this pipe connects main body and rotates mutually, and above-mentioned the sealed of locking key portion freed, and this is combined with and may undesirably be separated.

In order to eliminate above-mentioned unfavorable condition, on this pipe connector, adopt as described below sealed with undesirable separated structure and locking mechanism for preventing.

Fig. 4 shows the enlarged portion of chimeric teat 8.Under the chimeric status of above-mentioned latch hook portion 9, between the internal face of the front-end face of above-mentioned chimeric teat 8 and chimeric recess 7, form the gap, be set at the size of each one.Thereby such moving just might take place in this, and promptly from the chimeric status of above-mentioned latch hook portion 9, this chimeric teat 8 further enters vertically mutually with chimeric recess 7.

In addition, the opposing party side 8b of this chimeric teat 8 axially is inclination to this pipe joint body 1a, 1b.Therefore, this chimeric teat 8 forms along with more to its front end and the taper of circumferential narrowed width, and chimeric recess 7 forms too along with its inner and taper of its circumferential narrowed width of trend.Therefore, this chimeric teat 8 becomes easy with the chimeric of chimeric recess 7.Have, above-mentioned latch hook portion 9 formed side sides and the axial pact of this pipe joint body 1a, 1b form abreast again.

Also have, this chimeric teat 8 is embedded fashionable at the chimeric recess 7 of the other side's one side as shown in Figure 3, above-mentioned steel ball 15 against mechanism 10 be in contact with one another mutual pushing against, the opposing party side that makes this chimeric teat 8 away from one another against, its result, one side side 8a of this chimeric teat 8 mutually near against, as mentioned above, the sealed hook portion 9 of this side side be mutually locked against.In this case, the opposing party side 8b of above-mentioned chimeric teat 8 tilts to axial one-tenth, therefore owing to the reaction force against mechanism 10 produces axial thrust load, because this component, latch hook portion 9 is mutually locked vertically and is urged, thereby it is sealed by undesirable releasing to prevent to do the time spent at the inner no pressure of this pipe connector.

Have again, as shown in Figure 1,, form a plurality of wells 120 at the outer circumferential face of this chimeric main body 1a, 1b.This well 120 for example can form can be chimeric with instruments such as spanners shape, just in case can not remove because sand etc. are engaging-in in the combination that this pipe joint body 1a, 1b take place in conjunction with the time, instrument such as chimeric spanner in this well 120, this pipe joint body 1a, 1b are rotated, can remove its combination.

In addition, be respectively equipped with locking mechanism 121, under state, lock, preventing owing to impact waiting this combination that takes place, below this locking mechanism 121 is described with reference to Fig. 4 to Fig. 6 with releasing as desired with its combination at this pipe joint body 1a, 1b.

That is to say, be the bottom of the opposing party plane of inclination 8b of adjacent chimeric teat 8 in the inner corner portion of above-mentioned chimeric recess 7, approximately along the circumferential outstanding spring bolt 122 that is provided with.Locking lock 122 is diameter 3mm left and right sides rubber-like, and is for example made by the spring steel piano wire, is linear under nature, but also may be elasticity and become song.And, be formed with the discharge orifice 123 bigger than this spring bolt 122 diameters in the outstanding bottom that is provided with this spring bolt 122.But the formation of these spring bolt 122 free bends.Have again, in this discharge orifice 123,, fill and be fixed with the resilient plugs part of forming by the materials such as flexible foaming material of softness same as described above 126 in order to prevent the obstruction of husky mud etc.

This spring bolt 122 also can be separately positioned in whole chimeric recesses 7, and can only form in the chimeric recess 7 of a part.In the present embodiment, therefore outstanding this spring bolt 122 that is provided with can be provided with three spring bolts 122 on pipe joint body 1a, a 1b in the chimeric recess 7 of one of placement.

Also have, at the front-end face of above-mentioned chimeric teat 8, corresponding with this spring bolt 122 and form locking slot 124.This locking bail 124 as shown in figure 12, the one end is opened wide in the bight of this chimeric teat 8 and is formed the inner wall part of the other end and become terminal.In addition, form the promising chamfered section 125 that reliably withdraws from when above-mentioned spring bolt 122 is removed at this inner wall part.Have, this locking slot 124 forms at the front-end face of whole embedding part 8 again.Therefore, even this chimeric teat 8 is chimeric with any relation with chimeric recess 7, the spring bolt 122 of the other side's one side also must lock groove 124 with this and constitute accordingly.

Like this lock mechanism 121, if chimeric teat 8 in its chimeric recess 7, and during sealed latch hook portion 9, then as shown in Figure 4, this locks pin 122 and is entrenched in the locking slot 124 of front-end face of above-mentioned chimeric teat 8, and this front end that locks pin 122 contacts with the inner wall part that this locks the terminal of groove 124.Therefore, under this kind state, this pipe joint body 1a, 1b locking makes the sealed of above-mentioned latch hook portion 9 can not be along the circumferential rotation of removing direction.

Also have, under the situation of the locking of removing this locking mechanism 121, as shown in Figure 6, with this mutual approaching direction axial push in pipe joint 121 edges, then, when the inside of chimeric recess 7 was mobile vertically, above-mentioned spring bolt 122 pushed and the generation elastic bending to the front-end face of this chimeric teat 8 this chimeric teat 8 as shown in figure 13.Therefore, the front end of this spring bolt 122 is extracted by the inside of above-mentioned locking slot 124, removes locking, and this pipe joint body 1a, 1b are along circumferentially freely rotating.Thus, under this kind state,, then remove the sealed of above-mentioned latch hook portion 9, can remove the combination of this pipe joint body 1a, 1b if make this pipe joint body 1a, 1b along circumferentially rotating.Have, in such cases, form chamfered section 125 in the inside of above-mentioned locking slot 124, the front end that therefore above-mentioned spring bolt just can not take place hangs over the inside of this locking slot 124 and becomes reliability ground removes locking.

In addition, in this pipe connector, in order to make pipe joint body 1a, 1b chimeric smoothly and reliably, the side of chimeric teat 8 of above-mentioned each or chimeric recess 7 or inner side surface 8a, 8b constitute by the sagittal plane of the central axis by this pipe joint body 1a, 1b.That is to say that as shown in Figure 7, the face that constitutes a side of above-mentioned chimeric recess 8 and the opposing party's side 8a, 8b (inner side surface of chimeric recess 7) and latch hook 9 forms by the sagittal plane of the central axis O by this pipe joint body 1a, 1b.

Have again, in the explanation of present embodiment, this side 8a, 8b illustrate as the central axis face radially by pipe joint body 1a, 1b, but, in the middle of the goods of reality, this side also can be geometry ground correctly by central axis and radially face correctly, this also is natural.Therefore, consider the chimeric fairness and the reliability of actual product and add the condition in man-hour etc., the face that constitutes this side 8a, 8b also can be by central axis neighbouring, along radially face roughly.

When chimeric this pipe joint body 1a, 1b, though be chimeric between chimeric teat 8 one sides' the side 8a, between the 8b of the opposing party side, the aforesaid face by the radiation direction by its pipe joint body 1a, 1b central axis in this side forms.Therefore unnecessary gap does not take place between them.Thereby, this gap can be made the gap of smoothly chimeric required minimum, can not occur in that there is obstruction such as sand or gravelstone in this gap and the smooth loading and unloading that hinder this pipe connector.

In addition, when this is chimeric, also have because above-mentioned effect against reaction forces that contact took place such as power or each side 8a, 8b and latch hook portions 9 against mechanism 10.In such cases, above-mentioned side 8a, 8b and sealed hook portion 9 form by the sagittal plane of the central axis O by this pipe joint body 1a, 1b.Therefore, this reaction force or only become basically circumferentially and radial force against the component of power.Therefore, when this is chimeric, the component that this pipe joint body 1a, 1b radially move does not mutually take place.Therefore, this in conjunction with the time, the interactional power of pipe joint body 1a, 1b only becomes axial power and circumferential power, can prevent reliably that this central axis from moving and tilt and carry out sealed smoothly and reliably.

In addition, in the present embodiment, because above-mentioned the opposing party's side 8b tilts, so mutual reaction force of this side 8b or the direction against power etc. against mechanism 10 that forms on the 8b of this side become complicated.Yet, above-mentioned the opposing party side 8b also as above-mentioned face by radially constitute, so its component also only becomes axial and circumferential power, therefore can carry out sealed as mentioned above smoothly and reliably.

Have, above-mentioned smooth degree chimeric or that remove when chimeric all is subjected to the geomery of chimeric teat 8 or chimeric recess 7 and influences such as gap therebetween again.In actual product, try out most preproductions under various conditions and carry out optimal design and form, but, as mentioned above, reaction force or only help this chimeric and remove smooth degree when chimeric widely basically for the feature of axial and circumferential against the component of power.

Also have, Fig. 8 illustrates the pipe joint locking mechanism of the embodiment of the invention 2.This locking mechanism be with have make latch hook portion 9 mutually the shape of chimeric vertically jut 9a form.Unless this pipe joint body of this locking mechanism 1a, 1b are approaching mutually by locked state, vertically to move to set a distance, just can not remove the sealed of this jut 9a.This locking mechanism and described locking mechanism 121 are interdependent, can prevent more reliably this sealed with the institute undesirably be disengaged.In addition, present embodiment 2 is except that the premises, and is identical with the structure of the foregoing description 1, thus with Fig. 8 in embodiment's 1 corresponding part add same-sign, therefore its explanation is omitted.

Also have, Fig. 9 to Figure 11 illustrates the locking mechanism of the embodiment of the invention 3.This locking mechanism has above-mentioned chimeric recess 7 inner side surface inside, promptly by the bottom of the opposing party side 8b of chimeric teat 8 along the approximately circumferential outstanding flexible and flexible spring bolt 141 that is provided with.This spring bolt 141 for example made by the big material of elasticity of elastic material etc., under free state, be about rectilinear, but elastic bending.Have again,, form large diameter discharging recess 142, but this spring bolt 141 becomes free bend in these spring bolt 141 outstanding bottoms that are provided with.

Also have, corresponding with this spring bolt 141, at the front end of the opposing party side of chimeric teat 8 8b, be formed with and remove hole 143.The position in this releasing hole 143 is inconsistent and be positioned near it with the front end of above-mentioned spring bolt 141 under the sealed state of described latch hook portion 9.Have again, at this discharging recess 142, remove and to fill and to be fixed with the resilient plugs body of forming by the material of the flexible foaming material of softness etc. 144,145 in the hole 143 respectively, prevent that foreign matters such as sand, mud are piled up by portion within it.Have, present embodiment 3 is except that above-mentioned some again, and it constitutes identical with described embodiment 1, for adding identical symbol with embodiment's 1 corresponding part among Fig. 9 to Figure 11, so its explanation is omitted.

Carry out in the present embodiment when chimeric, as shown in Figure 9, above-mentioned spring bolt 141 bendings allow the chimeric of chimeric recess 7 and chimeric teat 8.So, under above-mentioned latch hook portion 9 complete sealed states, as shown in figure 10, above-mentioned spring bolt 141 reverts to lineal shape by the elastic force of self, and its front end contacts with the side 8b of chimeric teat 8a and makes this pipe joint body 1a, 1b lock mutually and can not rotate.

Also have, when removing locking, move and approaching mutually vertically by this pipe joint body 1a, 1b, as shown in figure 11, above-mentioned releasing hole 143 is corresponding with the front end of above-mentioned spring bolt 141.Under this kind state, the front end of this spring bolt 141 just might enter in this releasing hole 143, and pipe joint body 1a, 1b could remove locking along circumferentially moving.

Also have, Figure 12 illustrates embodiment 4 locking mechanism.This locking mechanism is respectively arranged with on above-mentioned pipe joint body 1a, 1b and is free to slide the set annular locking member 151 in ground vertically.Then, this locking member 151 by spring 152 front end one side of this pipe joint body 1a, 1b move vertically and against.

Also have, from the front end of this locking member 151, outstanding being provided with respectively and each chimeric recess 7 corresponding locking jaw 153.This locking jaw 153 has than the narrow slightly width in formed gap between the opposing party side 8b of chimeric teat 8 in chimeric teat 8 is entrenched in this chimeric recess 7, under the sealed fully states of latch hook portion 9.Then, this locking jaw 153 is outstanding in chimeric recess 7 along the base end part of this side 8b.Have, this embodiment 4 is except that above-mentioned some again, and its structure is identical with described embodiment 1, to adding same-sign with embodiment's 1 corresponding part among Figure 12, therefore its explanation is omitted.

In the present embodiment in chimeric teat 8 is entrenched in chimeric recess 7 time, the front end of above-mentioned locking jaw 153 contacts with the front end of this chimeric teat 8, this locking jaw 153 is crushed on this chimeric teat 8, and with locking member 151, the retreating against power of anti-spring 152.So this chimeric teat 8 is entrenched in the chimeric recess 7, latch hook portion 9 is sealed fully, and when forming given gap between above-mentioned side 8b, above-mentioned locking jaw 153 is owing to spring 152 advances and enter therebetween within the crack against power.Therefore, this pipe joint body is locked mutually and can not be rotated.Also have, when removing locking, above-mentioned locking member 151 dominated by hand is separated from each other it, anti-spring 152 make it to retreat against power, above-mentioned locking jaw 153 extracted by the gap between the 8b of side and removed locking.

Availablely in the present embodiment visually confirm the state of this locking mechanism, therefore be easy to confirm whether chimeric fully and locking of this pipe joint body 1a, 1b, and it is simple in structure, reliability height, and also operation easily by the outside.

Also have, as above-mentioned locking mechanism, Figure 13 to Figure 20 shows embodiment 5, and this embodiment uses as described plunger mechanism shown in the described figure against mechanism 10.

Figure 13 vertically cuts open side view for this plunger mechanism, and Figure 14 be the plunger plan view of Figure 13, and Figure 15 is the perspective view of a part of otch of viscous body.Piston body 211 is made up of the rounding cylindrical body of the metal that has opening portion 212 at end face, is provided with the flange 213 of inside bend at opening portion 212.Be provided with the ball 214 that to be formed by opening portion 212 flexible locking element steel balls in the inside of plunger 211.The internal diameter of described opening portion 212 is because flange 213 and than the smaller formation of the diameter of ball 214, the part of ball 214 is stretched out by opening portion 212, and the integral body of ball 214 can not be stretched out by opening portion 212.

Along its axial retractile disc spring 215 of harvesting, an end of this disc spring 215 contacts with the inner bottom part of piston body 211 in the inside of piston body 211, and the other end then contacts with ball 214, make ball 214 by opening portion 212 edges stretch out direction against.

At the inner space of disc spring 215 harvesting toughness body 216.This viscous body 216 is to fill in the cylindrical shape elasticity bag 217 of rubber etc., for example non-Newtonian fluid or putty-like silicone rubber fluid are the viscoelastic fluid of representative, be a kind ofly to deform for a short time in that piston body 211 is done the time spent impedance with relatively moving of ball 214 slow (low speed), and sharply relatively moving of (at a high speed) done the non-linear progression increase of time spent apparent viscosity and brought into play the material of high rigidity.

Non-Newtonian fluid as described viscous body 216 is and irrelevant fluid non-Newtonian fluid of time.So if when compressive stress and strain rate being shown on the straight line coordinate concerning, then shown in the curve a of Figure 16, along with the increase of strain rate, apparent viscosity increases and to be non-Newtonian mobile.Have, the straight line b of this Figure 16 is the characteristic of Newtonian fluid again.This kind phenomenon is expressed as plastic fluid and is opposite rheol flowing in essence.That is to say that in non-Newtonian fluid, fluid plays the lubrication between the solid particle that pass through mutually, therefore when the piston body 211 and the relative moving speed of ball 214 are slow,, freely flow for causing that the needed power of motion can be little.And when the piston body 211 and the relative moving speed of ball 214 were fast, then close filling was damaged between solid particle, and its increase as a result accounts for the volume of object.

That is to say, ball 214 is with low speed ground during along the direction pushing of retraction piston body 211 inside, be accompanied by the compression of disc spring 215, viscous body 216 deforms, allow piston body 211 and ball 214 to relatively move, but, ball 214 is because the effect of impact force during at full speed along the direction pushing of retraction piston body 211 inside, the compressive stress of viscous body 216 (along compression direction afterburning stress) become very big, to the mobile generation reaction force (power of rigid body spring rate) of ball 214 and to its constraint, ball 214 can not retraction piston body 211 inside, can not compression disc spring 215.

If will such plunger mechanism use as described pipe connector abutment member 10, to this pipe connector impact load effect, when pipe joint body 1a, 1b moment relatively rotates, the then big impedance of this plunger mechanism generation.Therefore, in this case, this pipe joint body 1a, 1b relatively can not rotate, so the sealed of latch hook portion 9 can be not to be disengaged as desired.

Have, this kind plunger mechanism is not only as the purposes of the shock-resistant locking mechanism of this pipe joint again, and can be used for various uses.

For example, the shock-resistant plunger mechanism of this kind can be used for mechanical important document with the mould involutory surface of fixed mould and moveable die, various pipe joint, boring positioning fixture, torque limit, the reckoning of rotating platform angle of rotation etc.For example shown in Figure 17, non-movable piston main body 211 on a side parts 218 is provided with the conical lockhole 220 sealed with ball 214, by ball 214 flexibly being locked together in lockhole 220, sealed first and second parts 218,219 on the opposing party's parts 219.

So, under first and second parts 218,219 locked state, because the impact force action that falls etc., make ball 214 with the time at high speed along the pushing of the direction of retraction piston body 211 inside, it is very big that the compressive stress of viscous body 216 becomes, to the mobile generation reaction force (power of rigid body spring rate) of ball 214, with its constraint.Therefore, the inside that ball 214 can retraction piston body 211, disc spring 215 is not compressed, so kept the bonding state of first and second parts 218,219.

Here, to described viscous body 216, promptly to filling in cylindrical shape elasticity bags 217 such as rubber, for example non-Newtonian fluid or putty-like silicone rubber fluid are that the elastic fluid of representative is illustrated, even " incompressible fluid " that viscous body 216 also changes hardly for the compression volume.As shown in figure 18, in the columnar elasticity bag 217 of rubber etc., filling viscous body 216, do not add under the state of external force, be the form shown in (a), but will be shown in (b), if add the external force (arrow) of compression direction, then dwindle vertically, radially expand, but do not have Volume Changes.In addition, viscous body 216 is because no recuperability, therefore as (c) shown in, however add the external force (arrow) of draw direction, just have vertically the character of extending, radially dwindling.

Therefore, as shown in figure 19, accommodate viscous body 216 in the inner space of disc spring 215.Shown in (a), afterburning to ball 214 and when compression disc spring 215 directions push, disc spring 215 is compressed, and also adds the power of compressing direction at the viscous body 216 to inside, and elasticity bag 217 radially expands and forms to by the state that expands laterally between the line of disc spring 215.In addition, if during not to the power of ball 214, shown in (b), because the elastic recovering force effect of disc spring 215, elasticity bag 217 extends vertically, radially dwindles.

As shown in figure 20, even when in columnar elasticity bags 217 such as rubber, disc spring 215 being accommodated with described viscous body 216, situation also is identical, shown in (a), to ball 214 reinforcings, and during along the pushing of the direction of compression disc spring 215, disc spring 215 is compressed, viscous body 216 is also being added the power of compressing direction, and elasticity bag 217 radially expands and forms to separating the state that expands laterally by the periphery of disc spring 15.In addition, if not to the power of ball 214, then shown in (b), elasticity bag 217 extends vertically owing to the elastic recovering force effect of disc spring 215, radially dwindles.

Therefore, the elasticity bag 217 of having accommodated viscous body 216 also can be set, also can together with viscous body 216 disc spring 215 be set in the inside of elasticity bag 217 in the inside of disc spring 215.

Also have, do not use aforesaid method of in elasticity bag 217, accommodating viscous body 216, also can use Elastic Cylindrical body such as spongy to soak into method as non-Newtonian fluid or putty-like silicone rubber fluid.

Also have, Figure 21 illustrates the pipe joint of the embodiment of the invention 6.This pipe joint is at the peripheral part of tube main body 3 outside sealing surface parts 255 to be installed, and front-end face that will these outside sealing surface parts 255 constitutes as sealing surface, on this front-end face ring sealing part 256 will be housed.

In the present embodiment, sealing parts 256 impale it in the outside of chimeric teat 8 and chimeric recess 7 and dispose.Therefore, under this adapter body bonding state,, can prevent between this chimeric teat 8 and chimeric recess 7, to invade mud, sand etc., can prevent engaging-in mud, sand etc. between them by above-mentioned sealed member 256 these chimeric teats 8 of protection.

Also have, above-mentioned sealed member 256 in order to achieve the above object, the cross section that has intrusions such as preventing mud, sand in the outside of keeping watertight lip part 257 is the safety cover portion 258 of U font approximately.

Also have, Figure 22 illustrates the pipe connector of the embodiment of the invention 7.This device forms the flexible pipe assembly department 284 that the cross section is made up of zigzag many fixed strips at the outer circumferential face of tube main body 283.So not shown flexible pipe closely embeds in the periphery of this flexible pipe assembly department 284, and the limit is fastenedly connected by retaining ring (not shown) from it.

Also have, in the present embodiment, by screw mounting ring segments 285, form foregoing chimeric teat 8 and chimeric recess 7 at the front end of this ring portion 285 in the periphery of above-mentioned tube main body 283.In addition, the periphery at this ring portion 285 is equipped with the rubber system vibrating part 286 that prevents engaging-in mud or sand etc. between this chimeric teat 8 and chimeric recess 7.This vibrating part 286 is done to form bellows portion 287 into about cylindrical shape at its front end.

Secondly, explanation is carried out method for processing to foregoing pipe joint body 1a, 1b with reference to Figure 23.

In such pipe joint body 1a, 1b, as previously mentioned, the side of chimeric teat 8 and chimeric recess 7 is that the sagittal plane by the central axis by this pipe joint body 1a, 1b is constituted.When making this chimeric teat 8 and chimeric recess 7, with milling machine etc. the front-end face of this pipe joint body 1a, 1b is carried out cutting, with common milling machine this side is carried out cutting in parallel to each other.

In order to address this problem, utilize above-mentioned method shown in Figure 23 to carry out cutting.At first, the about cylindrical workpiece W that constitutes aforementioned tube adapter body 1a, 1b is installed on the workpiece holding member 330 of the table mechenism 331 that keeps workpiece.This workpiece keep table mechenism 331 can with this workpiece W along its central axis be the X-axis sense of rotation be the A axle with arbitrarily angled rotation, can divert the worktable of existing milling machine.Secondly, milling-tool 332 is installed on the milling-tool head 333, and this milling-tool 332 is pointed to and the crossing direction of the central axis X axle of above-mentioned workpiece W.This milling-tool head 333 is it can be moved arbitrarily along central axial direction of this workpiece W, and it is first-class directly to divert existing milling machine machining.

So, the limit is rotated above-mentioned workpiece W, the limit is moved above-mentioned milling-tool 332 vertically, the cutting point of this milling cutter tools 332 is moved along the profile (profile of chimeric teat 8) of chimeric recess 7, front end at this workpiece carries out cutting to chimeric recess 7, makes side 8a, the 8b of both sides and latch hook portion 9 etc.

So, if after chimeric recess 7 processing are over, just this workpiece is only rotated the processing of carrying out next chimeric recess same as described above with given angle.Like this, promptly make whole chimeric recesses 7, and form chimeric teat 8 betwixt.

Have again, carry out the above-mentioned man-hour that adds actual, center line that makes above-mentioned milling-tool 332 and the central axis of workpiece W report to the leadship after accomplishing a task radially consistent the time, the cutting point of this milling-tool 332 has only its radius part circumferentially to move along workpiece.In addition, at the face that tilts with the X-axis of 332 couples of workpiece W as above-mentioned the opposing party's side 8b of this milling-tool, or circular-arc part is when cutting, and the circumferential movable part of this cutting point further changes.In order to proofread and correct these movable parts, above-mentioned milling-tool head 333 direction that can be orthogonal along the X-axis with workpiece W is that Y direction constitutes movably, proofreaies and correct the footpath of above-mentioned milling-tool 332 or moving of cutting movement direction.

With this manufacture method to above-mentioned side 8a, when 8b carries out cutting, the cutting point of milling-tool 332 refers generally to the central axis to workpiece W, so this side can be processed as the sagittal plane of the central axis by pipe joint body W.This kind manufacture method is so long as transform a little and can implement with existing device as mentioned above or to existing device, and can reduce cost.

The sealing mechanism that uses pipe connectors such as aforesaid fire hose more than has been described.As previously mentioned, do not add when batching automatically discretely and receiving and keeping at most flexible pipes that will lay continuously, need to get rid of this eliminate in flexible pipe residual water.Also have, at the construction field (site), in employed flexible pipe, the pipe arrangement etc. such as mediation construction, when movable type is removed these pipes, also need to get rid of its inner water.

Below illustrated sealing mechanism be corresponding with above-mentioned purpose, when the hydraulic pressure of inside such as hose type pipe arrangement is reduced near the barometric pressure, can automatically discharge inner water.Figure 24 and Figure 25 show the embodiment 1 of the sealing configuration that is used for the pipe joint shown in described Fig. 1 to Fig. 7.

Set sealing surface parts 5 on described pipe joint body 1a, 1b are to be made by the metallic material of aluminum alloy etc., make annular as a whole and are installed in the inner circumference edge portion of the full end of aforementioned tube adapter body 1a, 1b with screw.So under this pipe joint body 1a, 1b were mutually locked the state of combination, the front-end face of sealing face component 5 was with the mutual subtend of concentric shape.Have, under the sealed bonding state of this pipe joint body 1a, 1b, the front-end face of above-mentioned sealing surface parts 5 is separated from each other and forms betwixt annular access 21 again.

In addition, the front-end face part in sealing face component 5 is formed with sealed member mounting groove 23 respectively.Above-mentioned sealed member 6 is installed in sealing parts mounting groove 23.Sealing parts 6 are to be made by the synthetic rubber elastomeric material, make annular as a whole.Also have,, form fixed strip portion 22, prevent by extracting in the sealing parts mounting groove 23 in the inner side edge part of sealing parts 6.

So the front-end edge portion of above-mentioned sealed member 6 is to the inboard conical approximately outstanding lip part 20 difference unitary mouldings of this pipe joint body.So under the state of aforementioned tube adapter body 1a, the mutual chimeric combination of 1b, when above-mentioned sealed member 6 was in free state, as shown in figure 24, the front end of above-mentioned protection lip part 20 was separated from each other, and formed annular communication gap G betwixt.Also have, when pressurizeing with setting pressure in aforementioned tube adapter body 1a, 1b, above-mentioned lip part 20 reaches the place ahead one lateral bending song laterally owing to resiliently deformable takes place this pressure, as shown in figure 25, the front end of this lip part 20 is in contact with one another, and makes above-mentioned communication gap G inaccessible and constitute.

Have again, the shape of above-mentioned lip part 20, its elastic force and communication gap G design like this, promptly with the corresponding settings that suit such as service condition of this pipe joint, pressure in pipe joint main body 1a, the 1b is more than setting pressure, when for example the minimum hydraulic pressure of the water pushing pressure of fire hose is above, above-mentioned lip part 20 bendings, be in contact with one another as shown in Figure 4, and this pressure is when setting pressure is following, owing to the elastic force effect of this lip part 20 make this fore-end from, and form communication gap G betwixt as shown in figure 24.

The pipe connector of the fire hose of above-mentioned formation is pressed in fire hose has and is not done the time spent prolonging under the state of many fire hoses in conjunction with this pipe joint body 1a, 1b and connection, forms communication gap G between the lip part 20 of above-mentioned sealed member 6.Yet, beginning when this fire hose send water by setting pressure, the lip part 20 of above-mentioned sealed member 6 is adjacent to and makes this communication gap G obturation as shown in figure 25 mutually owing to resiliently deformable takes place this pressure.Therefore,,, make between this pipe joint body 1a, the 1b by sealing parts 6 to seal, just can not send water with leaking with existing the same in such cases.

Secondly,, then stop the water that send of this fire hose, press in reducing if fire-fighting operation finishes.In this case, the lip part 20 of above-mentioned sealed member 6 recovers by elastic force, and forms communication gap G between this lip part 20.So by this communication gap G and described access 21, it is inner and outside to be communicated with this pipe connector.So under the state of not removing this pipe connector combination, when batching this fire hose harvesting, the water that remains in fire hose inside is discharged to the outside by above-mentioned communication gap, and the fire hose in conjunction with these piecing devices directly can be batched harvesting.

Have, carrying out like this when batching harvesting, the water in the fire hose is because other principal elements of reel speed have pressurization to a certain degree.In this case, because this pressure, above-mentioned lip part 20 is kept separated state as shown in figure 24, and the setting of its elastic force as previously mentioned.

Have, such sealing mechanism is not limited to the foregoing description again.For example, the formation of above-mentioned sealed member except that above-mentioned, also applicable various formations.In addition, the locking mechanism of pipe joint body is not limited to the sealed shape of above-mentioned no negative and positive part difference, also applicable stop component with by locking mechanism arbitrarily such as the sealed form of stop component, external screw thread and female thread stubborn form of closing.

In addition, Figure 26 illustrates embodiment 2 sealing mechanism.Sealing mechanism constitutes identical with the sealing mechanism of the foregoing description 1 except that sealed member shape difference.

This embodiment makes two bursts of shapes with the sectional shape of fixing surplus the 22a of the sealed member mounting groove 23a of sealing surface parts 5a and sealed member 6a makes it chimeric more reliable.In addition, the lip part 20a of sealing parts 6a, its outstanding length forms greatly, forms pressurized recess 25 in the back side of this lip part 20a one side.So, between the front end of this lip part 20a, form given communication gap G.

As mentioned above, the outstanding length of present embodiment 2 lip part 20a is long, and forms pressurized recess 25 in its back side one side, and the amount of deformation of this lip part 20a that therefore interior pressure is made is big, and correspondence opens or closes above-mentioned communication gap G sensitively because interior pressure changes.

Also have, Figure 27 illustrates the sealing mechanism of the embodiment of the invention 3.This mechanism, promptly the locking mechanism of pipe joint body uses the screw-shaped locking mechanism.That is to say that the 31a among Figure 27,31b are pipe joint body, rotation freely is equipped with threaded collar 34 on a side pipe joint body 31a.Also have 35 to be that the split ring ring of this threaded collar 34 is freely installed in rotation.So, be formed with cloudy helical 32 at the inner peripheral surface of this threaded collar 34, and form positive helical 33 at the outer circumferential face of the opposing party's pipe joint body 31b, make pipe joint body 31a, 31b combination by screwing togather of these helicals.

So, on the front-end face of above-mentioned pipe joint body 31a, 31b, be formed with sealing surface 38 respectively.Sealing face 38 all is the conical surface that radially inner side enlarges.So ring sealing part 37 is equipped with on the boundary between sealing face 38.Sealing parts 37 are made by the synthetic rubber elastomeric material, make its cross section laterally and the wedge shape of narrowed width.So sealing member 37 is under its free state, separate with above-mentioned sealing surface 38 its bi-side, and be formed with communication gap G betwixt.In addition, in the present embodiment, be formed with a plurality of intercommunicating pores 36 that radially connect above-mentioned threaded collar 34 surrounding wall portion, this intercommunicating pore has formed access.

If the pressure in pipe joint body 31a, the 31b reaches more than the setting pressure, then owing to this pressure effect makes above-mentioned sealed member 37 footpath expansions, its bi-side are close on the sealing surface 38, make communication gap G obturation and the leakage of anti-sealing in the foregoing description 3.Also have, if internal pressure does not reach setting pressure, then sealed member 37 forms communication gap G owing to the elastic force effect of self takes place directly to dwindle, and can discharge inner water.

Also have, Figure 28 illustrates the sealing mechanism of the embodiment of the invention 4.Adopted the pipe joint that uses the sealed shape of stop as the locking mechanism that pins pipe joint body among this embodiment.That is to say that this mechanism forms by retainer 45 with the peripheral part at a square tube adapter body 41a, and be formed on the chimeric stop mechanism 42 of periphery of this square tube adapter body 1a at the opposing party's pipe joint body 41b.So, on this stop mechanism 42, stop component 43 is set, this brake member 43 by leaf spring against.So above-mentioned retainer 43 is with above-mentioned sealed and this pipe joint body 41a, 41b are combined by stop component 45.Have, above-mentioned stop component 43 is removed with above-mentioned by not shown lock releasing mechanism and is constituted by the sealed of stop component 45 again.

So, form the sealed member accepting groove 46 that surrounds a square tube adapter body 41a outer circumferential face at the peripheral part of above-mentioned the opposing party's pipe joint body 41b.In sealing parts accepting groove 46, accommodating sealed member 47.Sealing parts 47 are to be made by the synthetic rubber elastomeric material, all circularize and its cross section makes the コ font, form a pair of foot 48,49.So, under the free state of sealing parts 47, the outer circumferential face of one side's a foot 48 and a square tube adapter body 41a is close to, and the opposing party's foot 49 separates with the sealing surface in the 46 interior weeks of sealed member accepting groove of the opposing party's pipe joint body 41b, and forms communication gap G betwixt.In addition, be formed on week in the sealing parts accepting groove 46 the sealing surface upper shed and with a plurality of intercommunicating pores 50 of external communications, form access.

In the foregoing description 4, reach setting pressure when following in pipe joint body, because this pressure effect, resiliently deformables take place and are close to the sealing surface of sealed member accepting groove 46 in the foot 49 of above-mentioned sealed member 47, make communication gap G obturation; And when this pressure did not reach setting pressure, restored owing to the effect of elastic force in above-mentioned bight 49, has left sealing surface and form communication gap G, and this communication gap G makes in this pipe joint and external communications by intercommunicating pore 50.

Have again, the above embodiments 2 to embodiment 4 except that the premises, identical with described embodiment's 1 sealing mechanism.

Also have, Figure 29 illustrates the sealing mechanism of the embodiment of the invention 5.Present embodiment is respectively equipped with sealed member and is communicated with inner with outside valve.Other formations are identical with the foregoing description 4.

That is to say that this embodiment forms a pair of 48a of foot on above-mentioned sealed member 47, sealing surface two sides of the outer circumferential face of a 48a of this foot and a side's pipe joint body 41a and sealed member accepting groove 46 are close to, and play a part general sealed member.

So, for example on the surrounding wall portion of a side pipe joint body 1b,, be respectively equipped with the valve system that discharges internal pressure with above-mentioned sealed member part.That is to say that form on the inner peripheral surface of this opposing party's pipe joint body 41b along circumferential continuous recess portion 53, the bottom of this groove part 53 is put by majority and pressed hole 51 and external communications, this intercommunicating pore constitutes access.In addition, in this groove part 53, form the annular valve element of making by the synthetic rubber elastomeric material 55, one end of this valve member 55 is fixing by positioning ring 54, and this valve member 55 is under free state, and its other end forms connecting valve G by the diapire separation of this groove part 53.

Under pipe joint body 41a, 41b bonding state, above-mentioned sealing material 47 is identical with general sealing material, plays the seal action between them in the present embodiment.In addition, the valve member 55 of above-mentioned valve system 52 reaches setting pressure when above in internal pressure, because this pressure effect and being adjacent to the diapire of groove part 53 makes the communication gap obturation; And when internal pressure did not reach setting pressure, this valve member 55 was left by the diapire of groove part 53 owing to the elastic force effect of self, formed communication gap G, was communicated with the inside of these pipe joints with outside by this communication gap G and intercommunicating pore 51.

Have, present embodiment is except that the premises again, and its formation is identical with the foregoing description 4, and its effect is also identical.In the present embodiment, the valve system and the sealed member that discharge internal pressure are provided with respectively, therefore can be with the corresponding design respectively of sealing parts and valve system with purpose separately, design is easy, and the pressure of driving valve of above-mentioned valve system is set easily and reliably.

Have, the sealing mechanism of the foregoing description has illustrated the pipe connector of fire hose, but the invention is not restricted to this again, also it can be applicable to other hose union devices usually.

For example, also the device of formation same as described above can be used for the foregoing pipe connector that send water tube hose.In this case, send before water tube hose removes and receive and keep at this, send pressure in the water tube hose by reducing this, for example the communication gap by the pipe connector of high position sucks air, discharge inner water fully by this communication gap of sending the end of water tube hose or being in the pipe connector of lower position, can carry out this at an easy rate and send removing of water tube hose and receive and keep operation.

Claims (6)

1. pipe connector is between a kind of flexible pipe or flexible pipe and other machines or with the interconnective piecing devices of miscellaneous part, comprising:

The pair of pipes adapter body and

The front end of above-mentioned pipe joint body along circumferential array, the outstanding a plurality of chimeric teat that is provided with vertically, and between this chimeric teat formed chimeric recess,

This chimeric teat and chimeric recess complementally are entrenched in the chimeric recess and the chimeric teat of the other side's one side pipe adapter body mutually vertically,

Side side at this chimeric teat forms latch hook portion, and this latch hook portion is along the latch hook portion of the chimeric teat of the pipe joint body that circumferentially is locked together in the other side's one side, and restrictive axial moves, and pins this a pair of pipe joint body vertically;

And on the front-end face of above-mentioned pipe joint body, be provided with this pipe joint body dock mutually in conjunction with the time, with the sealing mechanism of this pipe joint body front-end face sealing; It is characterized in that described sealing mechanism includes flexible sealed member, pressure takes place and does the time spent in the sealing parts in described pipe joint body, owing to resiliently deformable takes place this pressure, play seal action, do not do the time spent and pressure takes place in pipe joint body, make the inside and the external communications of this pipe joint body.

2. pipe connector according to claim 1 is characterized in that, described chimeric teat at least bi-side and above-mentioned chimeric recess at least bi-side by forming by aforementioned tube adapter body central axis or near the about sagittal plane it.

3. pipe connector according to claim 1, it is characterized in that, form described latch hook portion in a side side of described chimeric teat, and the opposing party side of described chimeric teat is to the axioversion of this pipe joint body, described chimeric teat is along with the taper of trend front end formation narrowed width, and described chimeric recess is along with the taper of square one-tenth narrowed width in the trend.

4. pipe connector according to claim 1 is characterized in that, described pipe joint body is provided with when preventing that this pipe joint is mutually locked and removes this sealed locking mechanism not according to hope.

5. pipe connector according to claim 1, it is characterized in that, have a side side of described chimeric teat to form described latch hook portion, and be provided with in the opposing party's side the chimeric teat of mutual pipe joint body against the other side's one side along the reverse elasticity ground that is separated from each other the opposing party side against mechanism.

6. pipe connector according to claim 5 is characterized in that, describedly comprises against mechanism:

End face have opening portion the cylindrical shell piston body and

This piston body inner be provided with can by the flexible locking element of described opening portion and

Described piston body inner that be provided with, along the axial direction of piston body freely stretch and make described locking element to projected direction against disc spring and

In described piston body, be provided with, when the rapid migration of knot mutually takes place for described piston body and locking element, have rigidity, and at the viscous body that takes place to relatively move slowly and deform as the time spent.

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