CN1603673A - Pipe nipple - Google Patents
Pipe nipple Download PDFInfo
- Publication number
- CN1603673A CN1603673A CN 03156778 CN03156778A CN1603673A CN 1603673 A CN1603673 A CN 1603673A CN 03156778 CN03156778 CN 03156778 CN 03156778 A CN03156778 A CN 03156778A CN 1603673 A CN1603673 A CN 1603673A
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- China
- Prior art keywords
- joint
- flexible pipe
- pipe
- ring
- outward extending
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Abstract
A pipe nipple has a bore therethrough, with an entrance chamber at one end of the bore having a larger diameter adjacent a drive configuration of narrower diameter for receiving a tool therein to rotate the nipple about its longitudinal axis. The exterior of the nipple has a surface formation as a stop against which a hose can be inserted over the nipple, and a threaded length for attaching the nipple to another device.
Description
Technical field
The present invention relates generally to pipe joint, more specifically, the present invention relates to be used as in the automobile cooling system pipe joint of the adaptor between flexible pipe and other system unit.
Background technique
Pipe joint is used as the adaptor of various types of fluid systems usually.As its basic shape, pipe joint is a bit of pipe, and its two ends are suitable for connecting other parts or other pipe in the fluid system.
Known in automobile cooling system, pipe joint is as the adaptor between the part of cooling system, for example as water pump with the adaptor between the flexible pipe of freezing mixture importing or derivation water pump.Have outside thread on the end of this joint, be used for water pump on a screw mouth thread engagement, the other end of pipe joint is suitable for admitting a ready hose end thereon.Marmon clamp is used for flexible pipe is fixed to joint.A part of joint between the opposite end of screw thread and joint is set as can be by tool engagement, and this instrument is used for the screw thread rotation of joint is gone in the screw thread of water pump screw mouth.Can be circular by this part joint of tool engagement or the surface of flattening is arranged that this depends on the tool types that is used for swivel joint.Known such joint is made with mechanical processing technique.
Known automobile cooling system joint has shortcoming and defect.Make a cooling system joint with screw thread processing or other similar cutting device, this inherently can all with surface that lathe contacts on stay groove.This groove on the internal surface in pipe joint hole is some problem to a certain extent.The rough surface on ANALYSIS OF COOLANT FLOW institute edge has increased the friction factor in the pipe joint, trends towards stoping freezing mixture flowing in joint.And coarse surface has promoted gathering of corrosion products, and this not only has adverse effect to the intensity of connector, and has further stoped flowing in the pipe joint.
As usually in automobile cooling system, found like that, on the joint of lacking relatively, be used to drive or the outer surface of swivel joint also smaller.Like this, be difficult with joint and the engagement of suitable driving tool, and place tool can damage the screw thread on joint one end or damage the Surface of action of the joint the other end and flexible pipe drive surfaces outside.If drive with common spanner, joint need be rotated a bit of distance, unclamp, reappose and mesh spanner again so that joint is rotated longer distance, lasting repetition suitably is fixed in the water pump up to joint.This process is consuming time.Further, instrument many times unclamps and meshes again with pipe joint from pipe joint have been increased the inappropriate placement of instrument and has caused aforementioned infringement, and perhaps placement that can not be suitable is so that the possibility of drive sub.
In order effectively flexible pipe to be fixed on the joint with the fluid-tight ways of connecting, the end of flexible pipe is tightened slightly and is slided on the joint.When flexible pipe is installed on the connector end, be length that be difficult to determine the flexible pipe inner junction part.If the curtailment of flexible pipe spigot is enough, just may not work effectively around the marmon clamp of installing so.Further, because hose end tightens, aging and become more fragile along with flexible pipe, the crackle in the flexible pipe incision tip on the joint is diffusion inwardly, finally causes to leak and fault.
Related domain just needs a kind of like this pipe joint, and it is by not using the process forming of cutting tool on fluid contact surfaces, and has a driving configuration new, more effective joint.
Summary of the invention
The invention provides a kind of pipe joint that is specially adapted to automobile cooling system, it is shaped with cold forming process, has a longilineal internal drive configuration, and a block that provides for the hose end that is installed on it is provided.
On the one hand, the invention provides the method that a kind of manufacturing is used for the pipe joint of automobile cooling system, comprise the step of a tubular body of cold forming, this main body has first and second terminal and holes that are through to second end from first end; Engraving screw thread towards a part of main body of second end inwards from first end; At second terminal outward extending flange that is shaped; And shape out the hole that can admit instrument within it towards first end inwards from second end, this instrument is used for rotating this joint along the longitudinal shaft of joint.
On the other hand, the invention provides a kind of joint with tubular body, this main body has outer surface, first and second terminal and vertical holes of running through.First end has screw thread thereon, and second end has an outward extending flange and is configured to can admit a flexible pipe thereon.This hole is configured to admit an instrument that is used for axial swivel joint within it at second end.
The third aspect the invention provides a kind of pipe joint that is used for automobile cooling system.This joint has a tubular body, this main body has screwed first end of an outer surface, this screw thread is suitable for the threaded engagement with part of cooling system, second end that is suitable for being received within the cooling system flexible pipe, and a vertical hole that extends through.Second end has an outward extending flange, and is configured to flexible pipe and can slides on the flange.This hole is configured to admit an instrument that is used for axially rotating this joint within it at second end.
An advantage of the invention is provides a kind of pipe joint that is specially adapted to automobile cooling system, and wherein, this lip-deep microscratch has been eliminated in contact thereby fluid contact surfaces is not cut instrument.
Another advantage of the present invention has provided a kind of have big and the pipe joint of tool engagement with the area of contact of swivel.
Another advantage of the present invention is that a block is provided in the outside of pipe joint, with the end of determining to be contained in the flexible pipe on the connector end distance enough far away has been installed on joint.
The present invention also has an advantage to provide a kind of pipe joint, and this pipe joint is configured to allow hose end to relax and reduces crackle from hose end diffusion inwards.
Behind reference subsequently detailed description, claims and accompanying drawing, other features and advantages of the present invention will be significantly for a person skilled in the art, and wherein identical label is used for indicating identical parts in the accompanying drawing.
Description of drawings
Fig. 1 is the front view according to pipe joint of the present invention;
Fig. 2 is the end elevation of pipe joint shown in Figure 1;
Fig. 3 is the front view of the pipe joint similar to Fig. 1, but second embodiment of the present invention has been described; With
Fig. 4 is the end elevation of pipe joint shown in Figure 3;
Before describing embodiments of the invention in detail, should be appreciated that the present invention does not limit its application to describe subsequently the structures that proposed or the shown parts of accompanying drawing and the details of layout.The present invention can have other mode of execution, and can implement in many ways or finish.And, should be appreciated that the word and the term that use just should not be considered as restriction for the convenience of describing here.Here " comprise " and words such as " comprising " is meant and both comprises project and the equivalent of listing thereafter thereof, also comprise additional project and equivalent thereof.
Embodiment
Now more specifically referring to accompanying drawing, Fig. 1 particularly, label 10 has been indicated one according to pipe joint of the present invention.Joint 10 is the joints that are specially adapted to as in the automobile cooling system, is used as the flexible pipe of cooling system for example and the switching between the water pump in the cooling system.Yet, should be appreciated that according to pipe joint of the present invention to be used for other purposes in the automobile cooling system and other fluid system that is used for other type.
Joint 10 is elongated shape, and the main body 12 that is generally annular has an outer surface 14 and an axial bore 16 that is limited by internal surface 18.Joint 10 usefulness steel or other metal pass through to be shaped such as known cold forming process such as piercing and shaping die or metal drawing.The slim-lined construction of main body 12 is to be shaped with instruments such as drift, punch dies, and without machining or cutting forming, has so just avoided contacting of cutting tool and internal surface 18.Therefore, scratch can be do not formed on the internal surface 18, and the corrosivity composition can be do not gathered on it.Further, the appearance that reduces surface imperfection has also just reduced resistance, makes fluid steadily flow along internal surface 18 effectively.
For the longitudinal shaft swivel joint 10 along joint 10, the threaded part that will connect with respect to joint 10 drives this joint 10, provides one to drive configuration 40 in the hole 16 of first end 20 inwards since second terminal 22.In the embodiment shown in Figure 2, joint 10 has 6 angle points 42, utilizes these angle points 42, can will come swivel joint 10 in the hexagonal driving tool patchhole 16.Compare with existing known joint, driving configuration 40 can be very long.Further, drive configuration 40, make ratchet tool or other power throw can more easily be used for swivel joint 10 with this end.
Fig. 3 also shows a kind of according to joint 50 of the present invention.Joint 50 is similar with joint 10, identifies parts identical between joint 10 and 50 and part with same numeral.Yet joint 50 has comprised a different surface structure 44.By providing annulus 52 to replace wing 46.Ring 52 plays a part with wing 46 similar, the backstop that provides a kind of end of flexible pipe (not shown) to abut.At least that side of facing at ring 52 and the flexible pipe (not shown) that is installed on it, the ring-shaped depression 54 that outer surface 14 is had and ring 52 near.Depression 54 allows the end of flexible pipe (not shown) to keep relaxed state, thereby has reduced the trend that crackle inwardly spreads from the flexible pipe outer end in flexible pipe.
Such as the surface structure 44 of wing 46 and ring 52, available metal extruding (metalpinching) or the known similar technology of other technician by the metal forming field are shaped.
In joint 10 or joint 50 uses, screw thread 24 is aimed at the matching thread of joint 10 or 50 parts that will be fixed to.For joint is tightened in these parts, proper implements is inserted into drives in the configuration 40 and rotate this instrument and remove to tighten joint.Than traditional joint that drives from outer surface 14,, can more easily use instruments such as ratchet by come drive sub 10 and 50 from the end.The proper arrangement easily of this instrument is in driving configuration 40, and the damage in screw thread 24 or outer surface 14 zones that flexible pipe was fixed on harm has been reduced greatly.
For flexible pipe being fixed to second end 22, this flexible pipe sliding sleeve is crossed inclined-plane 30 and flange 26.When hose end near surface structure 44, the hose proof that wing 46 or encircle 52 for example, setter guarantee to have sufficient length on the joint so that flexible pipe is suitably sealed on it with suitable anchor clamps.With joint 50, the outward edge of flexible pipe is placed in the depression 54, thereby has alleviated the tension force of the flexible pipe of tightening on main body 12.Reduced the end diffusion inwards of the generation of crackle and crackle from flexible pipe.
The invention provides a kind of pipe joint of improved automobile cooling system, can more easily drive this joint and be meshed with other part of cooling system and eliminated the scratch on the fluid contact surfaces, these scratches can form corrosion location and stop fluid flowing along it.Further, when the flexible pipe with sufficient length is installed on the joint so that use flexible pipe is fixed on clamp ring on the joint when keeping suitable engagement, the invention provides physically and visual sign.In one embodiment of the invention, thus being installed in hose end on the joint can keep lax the reduced formation of crackle and the diffusion of crackle.
In scope of invention, aforementioned content can be made and change and modification.Should be appreciated that the present invention of and explanation open at this can extend to all possible combination of two or more single features, these features are that this paper and/or accompanying drawing are mentioned or can obviously obtain from this paper and/or accompanying drawing.The various optional aspects of the present invention have been formed in all these different combinations.Embodiment described here has been explained known enforcement best mode of the present invention, and makes others skilled in the art can implement the present invention.The composition of content of claims becomes to comprise that optional mode of execution is up to the scope by prior art allowed.
Following claim has been stated various characteristics of the present invention.
Claims (20)
1, a kind of manufacturing is used for the method for the pipe joint of automobile cooling system, comprising:
Tubular body of cold forming, this main body have first and second terminal and one be through to the hole of described second end from described first end, comprising:
Engraving screw thread towards the described main body of the part of described second end inwards from described first end;
At described second terminal outward extending flange that is shaped; With
Shape out the described hole that can admit instrument within it towards described first end inwards from described second end, this instrument is used for rotating described joint along the longitudinal shaft of joint.
2, method according to claim 1 is characterized in that, the described step that shapes is included in described hole internal shaping angle of departure, is used for admitting a hex tool within it.
3, method according to claim 1 is characterized in that, is included in the outward extending structure that is shaped on the described joint, and this structure separates between described first and second ends and with first and second ends.
4, method according to claim 3 is characterized in that, comprises that a plurality of outward extending wings that are shaped are as described structure.
5, method according to claim 3 is characterized in that, comprises that the circular ring that is shaped is as described structure.
6, method according to claim 5 is characterized in that, comprises that the ring-shaped depression that is shaped is near described ring.
7, a kind of joint comprises:
A tubular body, this main body have outer surface, first and second terminal and vertical holes of running through;
Described first end has screw thread thereon;
Described second end has an outward extending flange and is configured to and can admit flexible pipe thereon; With
Described hole is configured to the instrument that can admit one to be used for axially rotating described joint within it at described second end.
8, joint according to claim 7 is characterized in that, described hole is configured to admit a hex tool within it at described second end.
9, joint according to claim 7 is characterized in that, the described outer surface of described joint has at least one outward extending structure between described screw thread and described flange, and this structure is as the backstop that is inserted in the flexible pipe on the described joint.
10, joint according to claim 9 is characterized in that, described at least one structure comprises a plurality of wings that separate each other.
11, joint according to claim 9 is characterized in that, described at least one structure comprises a circular ring around described joint.
12, joint according to claim 11 is characterized in that, in the side of described ring towards described second end, comprises a ring-shaped depression near described circular ring.
13, joint according to claim 7 is characterized in that, this joint is made with cold forming.
14, a kind of pipe joint that is used for automobile cooling system, described joint comprises:
A tubular body, the true outer surface of this main body tool, screwed first end, this screw thread is suitable for the threaded engagement with part of cooling system, second end that is suitable for being received within the cooling system flexible pipe, and an axial bore that extends through;
Described second end has an outward extending flange, and is configured to flexible pipe and can slides on the described flange; With
Described hole is configured to admit one within it at described second end and is used for along the instrument of the described joint of its rotation.
According to right 14 described joints, it is characterized in that 15, described hole is configured to admit a hex tool within it at described second end.
16, joint according to claim 14 is characterized in that, the described outer surface of described joint has at least one outward extending structure between described screw thread and described flange, and this structure is as the backstop that is inserted in the flexible pipe on the described joint.
17, joint according to claim 16 is characterized in that, described at least one structure comprises a plurality of wings that separate each other.
18, joint according to claim 16 is characterized in that, described at least one structure comprises a circular ring around described joint.
19, joint according to claim 18 is characterized in that, in the side of described ring towards described second end, comprises a ring-shaped depression near described circular ring.
20, joint according to claim 14 is characterized in that, this joint is made with cold forming.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/460,127 US20040051311A1 (en) | 2002-09-13 | 2003-06-12 | Pipe nipple |
| US10/460,127 | 2003-06-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603673A true CN1603673A (en) | 2005-04-06 |
| CN100425899C CN100425899C (en) | 2008-10-15 |
Family
ID=34676543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031567789A Expired - Fee Related CN100425899C (en) | 2003-06-12 | 2003-09-10 | Pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100425899C (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053024A (en) * | 1991-02-11 | 1991-07-17 | 上海有色金属研究所 | Metal tube cold forming method using alkane filler |
| CN2168150Y (en) * | 1993-09-21 | 1994-06-08 | 江照政 | Joint of gas pipeline |
| US5537721A (en) * | 1994-08-19 | 1996-07-23 | Hans Oetiker Ag Maschinen- Und Apparatefabrik | Tolerance-compensating hose clamp |
| CN2254094Y (en) * | 1996-01-25 | 1997-05-14 | 兴卫卫材有限公司 | Water inlet connecting tube for shower nozzle |
| JP3215319B2 (en) * | 1996-03-14 | 2001-10-02 | 株式会社青山製作所 | Plug breather |
| IT1294764B1 (en) * | 1997-09-03 | 1999-04-12 | Manuli Rubber Ind Spa | HIGH PRESSURE FITTING FOR RUBBER HOSES WITH IMPROVED SEALING CHARACTERISTICS |
| CN2313518Y (en) * | 1997-11-25 | 1999-04-14 | 崔源湘 | Mixing valve of shower with adjustable central gaps and changeable directions |
| DE19756675C1 (en) * | 1997-12-19 | 1999-07-22 | Kuehner Gmbh & Cie | Armature for connecting a hose |
| DE20104203U1 (en) * | 2001-03-12 | 2002-01-17 | Rupp Florian | Pipe connection using crimping |
| CN2516800Y (en) * | 2001-12-14 | 2002-10-16 | 张茂坤 | Host connecting structure |
-
2003
- 2003-09-10 CN CNB031567789A patent/CN100425899C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100425899C (en) | 2008-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20130910 |