CN100552274C

CN100552274C - The pipe collar that comprises center rib with pad

Info

Publication number: CN100552274C
Application number: CNB2006800034980A
Authority: CN
Inventors: 布赖恩·T·伊格纳茨卡; 斯各特·T·卡斯尔
Original assignee: Breeze Torca Products LLC
Current assignee: Norma US Holding LLC
Priority date: 2005-02-10
Filing date: 2006-02-10
Publication date: 2009-10-21
Anticipated expiration: 2026-02-10
Also published as: CN101166929A

Abstract

The pipe collar of a kind of connecting tube end has formed gastight gas seal jointly.This pipe collar comprises untight strap, securing means, split sleeve pipe and inner pad.Strap extends to second end from first end circumferentially, and has a pair of axial end.Strap comprises the radial protrusion rib that is positioned at axial end, and the radial protrusion rib extends between first end and second end at least in part.The split sleeve pipe is positioned at strap and is positioned at rib at least.Pad axially is positioned at sleeve pipe, makes pad be positioned at rib at least in part.During combine and assemble, each tube end can lobed crimping and pipe collar be placed on two tube ends, like this, when in the center rib area at strap, crimping is engaged in pad.

Description

The pipe collar that comprises center rib with pad

Technical field

The present invention relates generally to pipe collar, relate to particularly and being used for pipe or other pipe with stretch mode or the pipe clamp and the pipe connector that link together in end-to-end mode.

Background technique

Automobile exhaust system generally includes the pipe or the conduit tube component of the gas that is used to carry engine emission.Each pipe part all links to each other to form complete exhaust gas system with other pipe part.Usually, this connection is common or flexible to be connected, or the contiguous of end-to-end (end-to-end) connects.For making it effective, should make the connection that forms between these pipe fittings have suitable fluid-tight, to prevent exhaust gas leakage.This connection also should have high mechanical properties, and is dismountable, to be used for possible maintenance and repair.

In the vent systems of pipe part, use pipe connector usually with end-to-end link mode axial engagement.Traditional pipe connector comprises and is generally strap (band) circular and that stop in opposing flanges, and this flange can be drawn close or unclamps by secure component or other fastening mechanism.Reaction member can be provided between flange, be applied to tangential force on the pipe with mean allocation when strap tightens up.Usually, this pipe connector comprises the inside split Sealed casing pipe with coupling circumferential end, and this coupling circumferential end is bonded with each other when tightening up to produce gas seal.Authorize in the 6th, 758, No. 501 U. S. Patents on July 6th, 2004 and to disclose this embodiment with split Sealed casing pipe.The ribbed pipe joiner is described in the 6th, 877, No. 780 U. S. Patents authorizing on April 12nd, 2005.All the elements of above-mentioned two patents are incorporated this paper by reference into.

Summary of the invention

According to the present invention, a kind of pipe collar that connects two pipes or other tubular bodies is provided, described pipe collar comprises untight strap, securing means, split Sealed casing pipe and internal gasket.Described strap is from the first end circumference and extend to the second end continuously, and has a pair of axial end portion.Described strap comprises the radial protrusion rib that upcountry is positioned at described axial end portion, and described radial protrusion rib extends between described first end and the described the second end at least in part continuously.Described securing means connects described flange, tightening up and unclamp to realize drawing over to one's side and separating described first end and the second end by described strap.Described split sleeve pipe is positioned at described strap and is positioned at described rib at least, so that when described strap tightens up, direct contact between the radially inner surface by described radial protrusion rib and the outer surface of described split sleeve pipe, described strap is exerted pressure to described split sleeve pipe, and described split sleeve pipe extends to second abutting end from first abutting end circumferentially.Described pad radially is positioned at described sleeve pipe, makes described pad be positioned at described rib at least in part.

The use that can combine with the tube end structure of flexible or adjacency of described pipe collar.Preferably, the lobed circumferential crimping of described tube end, when described tube end and pipe clamp were assembled together, described tube end and crimping were installed in below the pad together and are assemblied in the described rib of described strap.In one embodiment, described pipe collar uses single bolt fastener, and this secure component axially is centered at the rib of strap.In another embodiment, use the securing means with two bolts, wherein two bolts are positioned on the limit to axial of center rib separately.

Description of drawings

Below in conjunction with accompanying drawing the preferred embodiments of the invention are described, wherein identical drawing reference numeral is represented components identical, wherein:

Fig. 1 is the perspective exploded view of the present invention according to the pipe clamp of first mode of execution structure;

Pipe clamp and a pair of telescopic pipe end that perspective view among Fig. 2 shows among Fig. 1 form a line, and are used to be assemblied in tube end;

Fig. 3 is the perspective view that pipe clamp is assemblied in tube end with unclamping among Fig. 1;

Fig. 4 is the part amplification view that the horizontal plane along the axis that extends through the pipe clamp that assembles among Fig. 3 and tube end obtains;

Fig. 5 is the perspective view according to the pipe connector of second embodiment of the invention structure;

Fig. 6 is another perspective view of the pipe connector among Fig. 5, and wherein pipe connector and a pair of telescopic pipe end form a line and be used to be assemblied in tube end;

Fig. 7 is and opposite perspective view shown in Figure 6, and show an optional mode of execution of pipe connector shown in Figure 5, wherein pipe connector comprises recess, and the button of this recess and tube end forms a line, so that the orientation that relatively rotates of tube end to be provided to pipe clamp;

Fig. 8 is with identical perspective view shown in Figure 6, and difference is that pipe connector is installed on the tube end with unclamping;

Fig. 9 is the perspective exploded view of pipe connector shown in Figure 5, wherein shows each constituent elements of pipe connector;

Figure 10 and Figure 11 show the part amplification view of strap of pad, sleeve pipe and the pipe connector of optional mode of execution, and wherein the relative size of the center rib of pipe connector and the crimping on the tube end allows to exist between the tube end at interval;

Figure 12 is the side view of display tube end structure, wherein when assembling, utilizes lock pin and notch configuration that tube end is positioned at together angledly, utilizes button that pipe clamp is located with respect to tube end simultaneously;

Figure 13 is the plan view of pair of pipes end, shows the pipe lock pin that plays the recess on the connecting tube from Figure 12 convexity;

Figure 14 is with identical side view shown in Figure 12, only comprises that wherein a button makes that pipe clamp can be with respect to location in the tube end, and the angle orientation of unqualified other tube ends;

Figure 15 is the structural side view of tube end of other two buttons of use, and wherein two buttons are used for cooperating with pipe clamp the relative bearing that parts are set with this, and does not use lock pin and recess on the tube end;

Figure 16 is the perspective view of the present invention according to the pipe clamp of the 3rd mode of execution structure;

Figure 17 is the perspective exploded view of pipe clamp shown in Figure 16;

Figure 18 is the perspective exploded view of the present invention according to the pipe connector of the 4th mode of execution structure;

Figure 19 is the plan view that is used for the complete ring pad that uses in Figure 16-18 illustrated embodiment;

Figure 20 is the side view of pad shown in Figure 19; And,

Figure 21 is the zoomed-in view of pad axial end portion details shown in Figure 19.

Embodiment

Accompanying drawing is for example understood a plurality of embodiments of the present invention, and these embodiments comprise the pipe clamp and the pipe connector of the vent systems that can be used for vehicle motor.Along with the description of specification should be appreciated that the present invention can be used for realizing in many different application and with various mode of executions widely.For example, the present invention not only is used in the pipe clamp with clamping around the overlapping pipe of stretch mode connection, also is used in fastening pipe coupling piece around the adjacent pipe of end-to-end link form connection.The term of Shi Yonging " pipe collar " is often referred to pipe connector and pipe clamp in this article.In addition, term " axially ", " angled ground " and " radially " be meant with respect to shown in pipe connector and the direction of the cylindrical tube shape of pipe clamp, therefore " axial direction " is the axle extension along tubular shape, " radial direction " is radially away from this extension, and " angled ground " is meant around the each point position on " pipe clamp " circumference.

Referring to accompanying drawing 1-4, pipe clamp 10 is designed to securely two flexible pipes that connect be joined to together, thereby sets up the surface of contact of no gas leakage, and pipe clamp 10 generally includes: strap 20, securing means 22, sleeve pipe 24 and pad 26.Strap 20 is the thin metal flat flat rubber belting of formation open loop, and comprises main body 30.Main body 30 has a pair of

relative flange

32 and 34 that is positioned at each end.When fastening pipe clamp, securing means 22 is used to make

flange

32 and 34 to draw close, thereby all pipe clamp assemblies are tightened up on every side in the pair of pipes end.Similar with strap 20, sleeve pipe 24 and pad 26 also are the flat tape members of open loop form, and the size of these parts can make pad 26 be installed in the sleeve pipe 24, and sleeve pipe 24 is then installed in the strap 20.Should be appreciated that,, can also add other parts or remove some parts to pipe clamp 10, to adapt to the needs of the special applications of using pipe clamp from it although here the particular embodiment of Xian Shiing comprises above-mentioned parts.

Shown in Fig. 2 and 3, strap 20 is designed to be enclosed in circumferentially the flexible joint of pipe A and B.Main body 30 comprises center rib 40, a pair of

annular sidewall

42 and 44 of radial protrusion, a pair of transition portion 46 and 48.Center rib 40 is by

annular sidewall

42 and 44 and transition portion 46 and 48 constraints, and is surrounded on main body 30 circumferentially with the axial width of unanimity.The axial width of center rib 40 can be greater than or less than the axial width shown in this mode of execution fully, and depends on the special applications of using pipe clamp.Center rib 40 ends at each end of transition portion 46 and 48 circumferentially, and wherein transition portion phases down to main body 30.Center rib 40 is designed near a pair of circumferential rib with being positioned at pipe A and B end or crimping (bead) 60 and 62 adapts and acting in conjunction.As shown in Figure 2, preferably, crimping 60 and 62 upcountry is positioned at the end of pipe A and B respectively.The width of center rib 40 is according to selecting with respect to the crimping 60 of two tube ends and 60 position and other factors, so that when tube end is in coaxial telescopic location by set, above-mentioned crimping can be positioned at center rib.This is shown in Figure 3, and wherein tube end is positioned at the pipe clamp 10 that unclamps with flexible ways of connecting.

Flange

32 and 34 is integral parts of strap 20 opposed ends, and mutually remotely to the folded a pair of

radial protrusion ring

70 and 72 that forms of inflection, pillar and outer pillar in

radial protrusion ring

70 and 72 each has.Pillar comprises the

approximal surface

74 and 76 of the relative moulding that engages with the opposite side of fastening device components in each.From Fig. 1 can be best see that the approximal surface 74 of moulding and 76 shape and size can be for engaging with the part of the additional moulding of securing means 22.Similarly, the outer pillar of each flange comprises an

approximal surface

78 and 80 that is used for the relative moulding of securing means 22 different parts match.When securing means 22 was tightened up, the

flange

32 and 34 of outer biasing was drawn close, so the approximal surface 74-80 of a plurality of moulding of flange matches with the respective surfaces of securing means, and this will describe in detail below.

Securing means 22 generally includes plate 92 behind the reaction member 90, semicircle of moulding, the combination 94 and 96 of nut and bolt fastener, and utilize single bolt arrangement to make pipe clamp 10 maintain a restraint location.Reaction member 90 has the structure that biconvex rises usually, and when securing means 22 tightened up, reaction member 90 was matched with between

approximal surface

74 and 76, so that hole 100 comes with hole 98,102,104.Plate 92 adopts semi-cylindrical form usually behind the semicircle, and so-called semi-cylindrical form is meant utilizes a plane by the cylindrical body central axis cylindrical body to be cut into half shape, and plate 92 comprises the approximal surface 110 of plane 108 and moulding behind the semicircle.The approximal surface 110 of moulding contacts and is mated with the approximal surface 80 of flange 34, yet nut and bolt are interchangeable, thereby makes face 110 to contact with face 78 on flange 32.Bolt 96 is preferably T type bolt, and this T type bolt has and extends axially disperseing the semicircle head 112 by the fastening load of flange, and bolt 96 preferably has the shin bar 114 that extends through hole 98-104.Shown in the mode of execution of the pipe connector as shown in Fig. 5-9, can provide the part that has recess for plate 92 behind reaction member 90 and/or the semicircle, to hold center rib 40.In addition, the part that has recess has the degree of depth of highly selecting according to center rib 40, so make when bolt by abundant when fastening, reaction member and/or back plate engage with center rib, and provide radially inner power to lock (lock down) sleeve pipe and pad with help at tube end.Nut 94 is fastening against the back plate 92 that distributes fastening force by the axial width of flange 34 (using or do not use packing ring).It should be appreciated by those skilled in the art, can also use other securing means, comprise those securing meanss that do not utilize reaction member.

Sleeve pipe 24 is preferably the open loop-shaped component that is designed to be seated within the center rib 40 and holds pad 26, and comprises abutting end 120 and 122 and diminishing sidewall 124 and 126.Abutting end 120 and 122 circumference separating part are selected as, and when pipe clamp 10 fully was anchored on tube end, two abutting ends almost were bonded with each other, but still also remained with for example distance of 1-20mm between them.Sleeve pipe 24 has the shape and the size of supplying mutually with center rib 40, and is maintained between diminishing

sidewall

42 and 44; The

sidewall

42 and 44 of strap is designed to come with the

sidewall

124 and 126 of sleeve pipe.Although the width that sleeve pipe shown here 24 has is identical with center rib 40 to a great extent, is possible sleeve pipe 24 axial width greater than strap 20 self width is provided.This makes sleeve pipe 24 have outwards outstanding and away from one or more sidewalls of strap 20.With respect to the width of strap 20, sleeve pipe 24 can also have less than shown width.For the pivotal position that in strap 20, sleeve pipe 24 is positioned to wish, sleeve pipe can comprise with strap in recess or opening (not shown) lock pin (detent) (not shown) of aiming at.Other structures known or nearest exploitation that are used to aim at these parts can be used.In addition, can also adopt the abutting end structure of other types, for example disclosed tongue and groove structure in aforesaid the 6th, 758, No. 501 U. S. Patents.

Pad 26 is preferably and adopts the open loop-shaped component of making than soft material relatively, and is installed in the sleeve pipe 24, is compressed in fastening process, thereby forms comparatively satisfactory sealing between pipe A and B.Mode of execution shown here has consistent axial width and thickness, and is designed to be receivable between sleeve pipe sidewall 124 and 126.Pad 26 preferably includes straight abutting end 134 and 136, and the circumference separating part, this part make when pipe clamp 10 by abundant when fastening abutting end 134 and 136 almost can not engage.Abutting end 134 and 136 can also be diminished slight overlapping to allow to have in the end gradually, and (basically) do not increase the thickness of pad at overlapping.Because pad has soft relatively attribute, when fully big fastening force was applied to abutting end 134 and 136, they flowed into each other to fill up all slits therebetween.Certainly, other abutting end structure can be used, and comprises the abutting end of tongue and groove structure, for example is used to the abutting end at the pad shown in Fig. 5,7 and 9 the mode of execution.Various suitable gasket materials are known for those skilled in the art, comprise glass fibre, material (for example including the graphite of iron and steel), vermiculite based on graphite,

(come from Flexitallic company, company's network address Www.flexitallic.com), stainless steel or other pad approach, the thin steel that for example uses the seal bead that radially extends internally to form from its surface.Pad 26 can be positioned in the sleeve pipe 24, thereby make the abutting end 134 and 136 of pad be offset from the abutting end 120 and 122 of sleeve pipe angledly, and improve the gas tightness of pipe clamp in some cases.Pad or by because outside " elastic force " that himself elasticity produces is attached in the sleeve pipe perhaps is connected in sleeve pipe definitely by tackiness agent, lock pin or other mechanical connection manners.In addition, although the pad that illustrates has in the drawings occupied whole center rib area, pad 26 can also shorten or axially extend to the outside in rib zone in the axial direction.

Referring to the cross-sectional view of Fig. 4, in case pipe clamp 10 is tightened up, the sidewall 42 of

center rib

40 and 44 constraint ground remain in sleeve pipe 24, pad 26 and crimping 60 and 62 in the limited field of center rib.This just on joiner that does not have rib (non-ribbed) and pipe clamp for pipe clamp provide strengthen draw branch intensity (pull-apart strength).Can maybe need to select center rib 40 and the height of crimping 60,62 on tube end according to the demand of special applications; Yet, preferably, thus described height the expectation size enough is provided greatly draw branch intensity, to such an extent as to but can produce difficulty when in the joiner that unclamps, assembling tube end also greatly.Tolerance and the design requirement that can accept during according to production, the axial width of center rib 40 can be made into, when being in flexible the connection, tube end slightly is shorter than crimping 60 and 62 width at interval, make fastening force at tube end become the axial compression contact with during being used to help further be tightly connected like this,

sidewall

42 and 44 is engaged in crimping 60 and 62 respectively.As a kind of selection, 40 width of center rib can be greater than the minimum axial length that is used to hold crimping 60 and 62, so tube end may have axially spaced-apart in center rib.Crimping 60 and 62 can be made into self radially to expand to pipe, perhaps crimping 60 and 62 can be welding or be bonded in separating component on the pipe part.

Fig. 5-11 discloses second mode of execution of pipe connector 200 forms, and pipe connector 200 comprises strap 202, securing means 204, split Sealed casing pipe 206 and inner pad 208.Strap 202 is untight straps, comprises cylinder body part 210, and a pair of relative flange 214 and 216.

Flange

214 and 216 extends from main body, to form ring in its radially the most outside part.When a pair of adjacent pipe end A and B tightened joiner, securing means 204 was used to make

flange

214 and 216 to draw close.Split Sealed casing pipe 206 radially is placed in the strap 202, and comprises a pair of cooperation

circumferential ends

222 and 224, and

end

222 and 224 is engaged with each other when fastening strap and forms sealing.The abutting

end

222 and 224 of split Sealed casing pipe 206 is offset from

flange

214 and 216 angledly, thereby makes when abutting end is drawn close each other during fastening strap, in abutting end formation gas seal.

Strap 202 and split Sealed casing pipe 206 comprise radial protrusion center rib 230 and 232 separately.Center rib 230 and 232 limits by a pair of diminishing sidewall 234 and 236 respectively.Sidewall 234 and 236 respectively radially outwardly, and slightly axially towards each other direction extend.What extend between the sidewall 234 and 236 of center rib is separately cylindrical tubular member 238 and 240, and this cylindrical tubular member 238 and 240 has unified diameter, and has the axial length of the whole axial lengths 1/3rd that are approximately joiner 200.Radial protrusion center rib 230 and 232 axial length can be greater than or less than above-mentioned size basically, and this depends on the special applications of using joiner.Center rib is designed to and the pipe A that links together and a pair of crimping 250 and 252 actings in conjunction of B end.As shown in Figure 6, these crimpings upcountry are positioned at each tube end.Figure 7 shows that the opposition side of structure same as shown in Figure 6.Center rib 230 and 232 width are selected with respect to the position of pipe A and B end according to crimping 250 and 252, thus make when the tube end quilt axially, when the end is connected together to the end adjoining farmland neighbour, crimping all is positioned at center rib.As shown in Figure 8, wherein tube end is in the joiner that unclamps in abutting connection with the ground state of contact.

The joint of pipe connector 200 and crimping 250 on tube end and 252 and above-mentioned identical with reference to pipe clamp 10 described modes.That is to say that in case joiner 200 is fastened, center rib 230 and 232 sidewall 234 and 236 constraint ground remain in crimping 250 and 252 in the limited field of center rib.This just do not have on the joiner of rib for joiner provide strengthen draw branch intensity.In addition, above-mentioned reference first mode of execution other business that describe, that need consider for center rib and pipe crimping is applicable to pipe connector 200 too.

Fig. 9 is the exploded view of coupler component.From Fig. 5 and 9, can find out better, the abutting

end

222 and 224 of split Sealed casing pipe 206 defines tongue and groove sealing configuration, the groove sealing configuration has utilized center tongue 260 on the abutting end 222 of sleeve pipe, fixed width (non-dwindle gradually), and has utilized the additional groove or the recess 262 of another abutting end 224 of sleeve pipe.Select the circle spacing of abutting

end

222 and 224, in case so that joiner is when being fastened on the tube end fully, two abutting ends almost are bonded together.Can be greater than or less than strap 202 self though be appreciated that the axial length of sleeve pipe, sleeve pipe 206 can also have the same axial border with the axial length of strap 202.For example, sleeve pipe can be by in the centering rib fully 230 and have almost and pad 208 identical construction shown in Fig. 9.Other feature and optionally structure (for example, as above with reference to the sleeve pipe 24 described feature and the structures of first mode of execution) can be used in sleeve pipe 206 too.

Pad 208 is designed to: it is installed in the center rib 232 of split Sealed casing pipe 206 when fastening by abundant when joiner, thereby the gas seal between two tube ends is provided.For this purpose, the pad 208 of illustrated embodiment has the axial width that approximately equates with the axial width of center rib 232, and comprise angled antelabium 268 at each axial end portion, in the time of like this in pad is inserted into sleeve pipe, two axial antelabium are resisted against the sidewall 236 of Sealed casing pipe.Similar with sleeve pipe, pad comprises the abutting end with tongue and groove structure, wherein, the circumferential extension of two axial end portions (antelabium) 268 by pad limits groove 272 at an abutting end, and the circumferential extension of the core by pad and limit tongue 270 at another abutting end.Can use other end constructions of pad.For example, shown in Figure 12 as in aforesaid the 6th, 877, No. 780 U. S. Patents, when strap was fastened, pad can have overlapped at least slightly straight end.

Pad 208 in the mode of execution shown in Fig. 5-9 forms a line with split Sealed casing pipe 206, so that the tongue of pad 270 covers on the tongue 260 of sleeve pipe.Yet pad 208 can also alternatively be positioned at sleeve pipe 206, makes the abutting end of pad be offset from the abutting end of Sealed casing pipe angledly, as described in above-mentioned reference first mode of execution.Other features of gasket material itself and pad 208 can be identical with the pad 26 of first mode of execution.

Figure 10 and Figure 11 are the cross-sectional structure figure of pipe connector, and among the figure, pad 280 extends whole axial widths of the rib 282 of sleeve pipe, but does not comprise the axial end portion antelabium.In addition, be to be further noted that in the present embodiment that the axial width of rib 282 in this case, allows to have the interval of 5mm greater than the width of two crimpings in required containing pipe end between tube end.

Except the following stated, securing means 204 can have identical basic structure with the securing means 22 of first mode of execution.Therefore, securing means 204 comprises reaction member 284, plate 286 and a pair of nuts and bolt secure component 288 behind the semicircle, and this secure component 288 is passed in the hole on flange 214,216 and the reaction member 284.Flange itself comprises the integral part of the opposed end of strap 202, and this integral part away from the doubling bending of the other side ground, limits a pair of radial protrusion ring mutually.This just makes each flange have an interior pillar (leg) and outer pillar, and as shown in FIG., and center rib 230 extends to lower (being positioned at inner radial) part of each

pillar.Flange

214 and 216 comprises the relative abutment surface that is positioned on their pillars, and when fastening strap, these abutment surfaces are engaged in the opposite side of therebetween reaction member 284.Nut is against back plate 286 fastening (passing through packing ring), and this back plate distributes fastening force along the axial width of flange.It should be appreciated by those skilled in the art, can also use other securing means, comprise the securing means that does not use reaction member.

As shown in Figure 9, for the center rib separately 230 of holding strap 202 and 232 and Sealed casing pipe 206, plate 286 all comprises central concave or notch part 290 and 292 behind reaction member 284 and the semicircle, as shown in Figure 9.These recesses allow above-mentioned parts to be enclosed within on the center rib 230, therefore do not need to increase the height of flange.This has just simplified the appearance profile of joiner on the whole.As shown in Figure 5, bolt has semicircular T type and fastens head 294, and head 294 axially extends to center rib 230, thereby distributes the fastening load by flange, but these heads terminate in center rib, so does not interfere mutually between head and the center rib.The notch depth of the notch depth of reaction member 284 and/or back plate 286 can be selected according to the height of center rib 230, thereby make when bolt by abundant when fastening, reaction member and/or back plate are engaged in center rib, and provide radially inner power, to help locking sleeve and pad on tube end.

For the single bolt arrangement 22 that provides in first mode of execution, an advantage of two bolt clamp devices 204 is, bolt puts on each sides of center rib 230 and 232 with the band tensile force of its maximum, and therefore the clamping pressure preferably against tube end is provided in the axial inside position of crimping (but not at crimping itself).This helps the tube end gas seal that provides good, and has improved and drawn branch intensity.

For the insertion depth of needs or expectation control valve end and/or be provided with respect to joiner in the application of rotational orientation of one or two (or mutual) of pipe, joiner 200 comprises the recess 296 that is positioned on one or two axial end portion, to engage with the corresponding button 298 on the tube end.The example of taking this mode has been shown among Fig. 7, and Fig. 7 is the optional mode of execution that comprises Fig. 5,6,8,9 all features of illustrated embodiment.The structure of button and recess and to use publication No. be to have given complete description in the U.S. Patent application of 2005/0099001 A1, wherein this patent application was announced on May 12nd, 2005, and transfer is to the claimant of this provisional application.Publication No. is that all the elements of the U.S. Patent application of 2005/0099001 A1 are incorporated this paper by reference into.Have or do not have the latch (latch) in the U.S. Patent application that publication number is 2005/0099001 A1, button and notch feature can both be used; As a kind of selection, can as disclosing in the above-mentioned application of having announced, use latch and button, and without any need for joiner and the recess of sleeve pipe.Other method is obvious for a person skilled in the art.

Figure 12-15 shows multiple telescopic pipe end construction, these telescopic pipe end constructions can be used in an expectation is provided tube end to each other and/or with the aiming at of pipe collar.As shown in figure 12, tube end A has comprised a male portion 302 that diameter reduces, and male portion 302 extends to the crimping 304 that radially extends from the end surface of pipe A.Male portion 302 comprises from the axially extended recess 306 of end surface of pipe A.Tube end B comprises the radially inwardly protruded lock pin 308 along the crimping 310 that extends radially outwardly, and this crimping 310 is axially between lock pin 308 and pipe B end portion surface.Recess 306 and lock pin 308 are arranged to the size that can cooperatively interact, as shown in the figure, and to fix the relative angle orientation of two pipes.Lock pin is identical with the structure shown in notch configuration and Fig. 2.Tube end A for example further comprises the button 312 of the radial protrusion identical with button shown in Figure 7 298.As mentioned above, latch or recess that button 312 can be combined on the pipe collar use, thereby help pipe collar is placed the junction of ends of tubes.Figure 13 is recess 306 and the end elevation that lock pin 308 engages, and there is shown lock pin 308 can be from male portion 302 to inner process one segment distance.

In Figure 14, this mode is not used recess and lock pin, only has button 312, and such structure allows pipe collar to be oriented on the tube end A, and need not the relative angle orientation of limiter tube end B.Figure 15 has described the structure of having used second button 314 therein, and this structure can be used for pipe collar as shown in Figure 7, or is that the parts of the latch shown in the U.S. Patent application of 2005/0099001 A1 use with for example above-mentioned publication No..Button can depend on the special requirement of application with respect to the position of tube end and whether use the pipe collar with a bolt or two bolts and change.In this, can be used as the pipe connector that the tube end with two adjacency links together although it should be noted that the pipe clamp of two bolts, overlapping (stretching) that it can also be used for as shown in Figure 12-15 connects.Advantage with flexible connection of disclosed, as to be provided with liner pipe collar is that in vehicle exhaust was used, this structure allowed to use Graphite pad, and need not graphite material directly is exposed in the gas of discharging.

At the 3rd mode of execution 318 shown in Figure 16 and 17, wherein pipe clamp can be according to first mode of execution 10 structure, except following some: the clearing end of the part that (1) strap turns back has recess to hold center rib, and wherein said clearing end limits flange; (2) the split Sealed casing pipe does not use tongue and groove fit end, and still the axial end portion at it has a pair of flange up, in order to hold it in the appropriate location in the strap; And (3) pad is a complete ring (anchor ring), but not untight ring.Pipe clamp 318 comprises untight strap 320, securing means 322, split Sealed casing pipe 324 and pad 326.Identical with first mode of execution, untight strap comprises main body 330 and pair of

flanges

332 and 334, extend to

form flange

332 and 334 by main body 330 integral body, wherein main body 330 extends to a pair of

ring

336 and 338 separately inside and outside radially, thus in folding formation of this main body 330 self pillar with outside pillar.

Outer pillar

340 and 342 has the clearing

end

344 and 346 of recess form separately, and the size of recess can be held the center rib 348 of strap 320.The remainder of strap 320 and securing means 322 can with relevant same content in above-mentioned first mode of execution.

Split Sealed casing pipe 324 is untight rings, is included in 352 axially extended center rib 350 of pair of sidewalls, and sidewall 352 radially extends internally from center rib, and ends at the axial direction part 354 of the weak point of sleeve pipe.Radially outer projecting edge 356 extends from axial direction part 354, and limits the axial boundary of sleeve pipe.At each axial end portion of sleeve pipe 324, sidewall 352, axial direction part 354 and edge 356 limit groove 358 jointly, and groove 358 is used for sleeve pipe is remained in the strap 320.Especially, the main body 330 of strap 320 is included in and extends axially 360 on each side of center rib 348, and when sleeve pipe 324 was inserted in strap 320, groove 358 hasps were in extending 360.This matching relationship can be from Figure 16 362 see.The untight ring structure of sleeve pipe 324 is limited by a pair of

cooperative end part

364 and 366, and in the present embodiment, abutting end is straight axially extended end; Yet tongue is connected with groove or other joint constructions can be replaced using.

Figure 18 has shown the 4th mode of execution 400, wherein used and the identical strap 402 of strap 202 in second mode of execution, and with the identical securing means 404 of securing means 204 in second mode of execution, and different be, reaction device 484 and back plate 486 have a pair of recess 492 separately, and are not to be single recess.Upside and downside at reaction member and back plate provide recess 492, make like this these parts to be assemblied on the strap 402 in any one position of at least two rotational position.This helps to minimize mistake and assembles and minimize the possibility that causes the potential reduction of hoop clip sigma compactness energy.

Pipe connector 400 comprises the split Sealed casing pipe 406 in the center rib 430 that is installed on strap 402 fully.Sleeve pipe 406 comprises two sidewalls 436, and sidewall 436 forms groove (pocket), and pad 408 is arranged in this groove.Pad 408 is identical with ring pad 326 complete in the 3rd mode of execution.Figure 19-21 shows the further details of the pad 408 that uses in the pad 326 that uses in the 3rd mode of execution and the 4th mode of execution.As mentioned above, pad is complete (closure) ring of the gasket material groove of making, be positioned at center rib or Sealed casing pipe.Pad preferably includes first inclined-plane 470 on the outer surface of two axial end portions, and the surface, inside of two axial end portions on the second less inclined-plane 472.These are shown in the enlarged view shown in Figure 21.Pad can enough flake graphites be made, and preferably the have 70-130lbs/cf density of (every cubic feet of pound), and wherein 130lbs/cf is preferably the maximum density values under whole clamp pressure of expectation.More preferably, above-mentioned density is in the 73-110lbs/cf scope.The higher end value of density range allows to shift bigger clamp load by pad.Suitable pad can be from Chardon, and the EGCEnterprises company of OH obtains, and the said firm's network address is Www.egc-ent.com, the Coniston Profiles company of perhaps English Merseyside (Merseyside England) obtains, and the said firm's network address is Www.conistonprofiles.co.ukThis pad also can combine with preceding two mode of executions and is used.

Although being used for the special size of pipe collar changes to some extent along with application, but in the outlet pipe mode of execution of a preferred vehicle motor, tube end has the crimping from tube-surface projection 1mm to 1.5mm, and these crimpings can utilize the finger piece of the segmentation expansion that for example is used for I/O processing to form.Strap and sleeve center ribs are that 4mm is dark, and pad is that 3mm is thick.

Be appreciated that aforementioned description is not the present invention itself, but one or more preferred exemplary of the present invention.The present invention is not limited thereto locates disclosed specific embodiments, and is limited separately by following claim.In addition, the statement that is included in the aforementioned description relates to specific embodiment, can not be interpreted as limiting scope of the present invention or limits the employed term of claim, unless the special qualification that this term or word have been carried out in the above.To those skilled in the art, various other embodiment and to the various distortion of above-mentioned disclosed embodiment with to change all be conspicuous.Various other embodiments, various distortion and changing all should be defined as within the scope of attached claim.

When in specification and appending claims, using, when being used for being associated with the clauses and subclauses of one or more parts or sundry item, term " for example ", " analogy " and " such as ", verb " comprises ", " have ", " comprise " and they other verb form, each all is seen as does not have the range of definition, promptly these terms do not think got rid of other, other parts or project.Other terms can use their extensively rational implications to make an explanation, and explain unless need to carry out difference in context.

Claims

1. pipe collar that connects two tubular bodies comprises:

Strap, circumference also extends to second end from first end continuously, and has a pair of axial end, described strap comprises the radial protrusion rib that upcountry is positioned at described axial end, and extend continuously at least in part between described first end and described second end, wherein, first end of described strap and second end comprise the flange that radially extends;

Securing means is connected in described flange, tightening up and unclamp to realize drawing over to one's side and separating described first end and second end by described strap;

The split sleeve pipe, be positioned at described strap and be positioned at described radial protrusion rib at least, so that when described strap tightens up, direct contact between the radially inner surface by described radial protrusion rib and the outer surface of described split sleeve pipe, described strap is exerted pressure to described split sleeve pipe, and described split sleeve pipe extends to second abutting end from first abutting end circumferentially; And,

Pad radially is positioned at described split sleeve pipe, makes described pad be positioned at described radial protrusion rib at least in part.

2. pipe collar as claimed in claim 1, wherein, described flange has the hole, the hole that each of described flange has and the hole of other flanges form a line, described securing means comprises single nut and bolt fastener and back plate, described bolt extends through neat hole of arrangement on described two flanges and back plate, and extends to corresponding nut, thereby makes nut fastening on bolt by the back plate described flange be drawn close.

3. pipe collar as claimed in claim 2, wherein, described securing means further comprises the reaction member between described flange.

4. pipe collar as claimed in claim 2, wherein, described bolt comprises bolt head and shin bar, described bolt head and described back plate extend enough axial distances, so that by each described flange dispersion forces from the described securing means.

5. pipe collar as claimed in claim 1, wherein, the whole end sections of described strap forms described flange, and each described end sections is from folding, so that described flange has interior pillar and outer pillar.

6. pipe collar as claimed in claim 1, wherein, described sleeve pipe comprises first abutting end and second abutting end, described first abutting end and second abutting end have the circle spacing, so that complete when fastening when described securing means, described abutting end almost is bonded with each other, but can not be in contact with one another substantially.

7. pipe collar as claimed in claim 6, wherein, described pad comprises first abutting end and second abutting end, first abutting end and second abutting end of described pad have the circle spacing, so that when described securing means complete when fastening, described abutting end almost is bonded with each other, but substantially can be not overlapped.

8. pipe collar as claimed in claim 1, wherein, described radial protrusion rib, described sleeve pipe all have identical axial width usually with described pad.

9. pipe collar as claimed in claim 1, wherein, in the described flange each has the pair of holes that the hole with other flanges forms a line, described securing means comprises a pair of nut and bolt fastener and back plate, described bolt extends through neat hole and the back plate of arrangement on described two flanges, and extend to corresponding nut, thereby make nut on bolt fastening by the back plate described flange is drawn close; And plate has recess after described, and the salient rib of described strap is positioned at described recess at least in part.

10. pipe collar as claimed in claim 9, wherein, described securing means further comprises the reaction member between described flange, and wherein said reaction member has recess, and described split sleeve pipe is positioned at this recess at least in part.

11. pipe collar as claimed in claim 1, wherein, the whole end sections of described strap forms described flange, and each described end sections is from folding, so that described flange has interior pillar and outer pillar; And the described salient rib of described strap extend at least pillar and outer pillar in each flange described than lower part.

12. pipe collar as claimed in claim 1, wherein, described pad comprises the unbroken loop that graphite material is made.

13. pipe collar as claimed in claim 12, wherein, described pad has the density that scope is 70-1301bs/cf.