CN204533896U - Locking casing type sealing joint, air brake piping and fuel pipe - Google Patents
Locking casing type sealing joint, air brake piping and fuel pipe Download PDFInfo
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- CN204533896U CN204533896U CN201520022512.8U CN201520022512U CN204533896U CN 204533896 U CN204533896 U CN 204533896U CN 201520022512 U CN201520022512 U CN 201520022512U CN 204533896 U CN204533896 U CN 204533896U
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Abstract
The utility model relates to a kind of locking casing type sealing joint, air brake piping and fuel pipe, wherein locking casing type sealing joint comprises sealing joint body (1), sealing joint body (1) comprises sealed end and connecting end, connecting end is connected with nylon tube (5), sealed end is connected with jointing body (3) by snap-in structure, and the outer wall of sealed end and the hole wall of jointing body (3) are formed to contact at fitting surface place and seal.Locking casing type sealing joint of the present utility model, by link position and sealing station being provided separately, can reach more excellent sealing effect, reduces risk oil gas occurring and reveals further, thus improves the Security of automobile air brake pipeline and fuel pipe work; Also do not need when mounted in addition strictly to control locking torque, disassembly process is very convenient, and after assembling, sealing station can not be destroyed, and this locking casing type sealing joint can be reused.
Description
Technical field
The utility model relates to pipe joint technical field, particularly relates to a kind of locking casing type sealing joint, air brake piping and fuel pipe.
Background technique
Pipe joint in current air brake piping mainly adopts welding type, flared type and FERRULETYPE three kinds of forms.Wherein the Bite type fittings advantages such as structure is simple owing to having, good manufacturability, easy to use and repeated disassembled and assembled performance are good, develop into the predominate architecture form of braking system pipe joint gradually.
Bite type fittings of the prior art generally adopts structural type as shown in Figure 1, comprise: fittings body 1a, nut 2a and there is the cutting ferrule 3a of inner edge, as fastening nut 2a, cutting ferrule 3a is pushed in the cone shape hole of fittings body 1a under the pressure of nut 2a, and be out of shape thereupon, at this moment the inner conical surface close contact of cutting ferrule 3a and fittings body 2a, form sealing, the inner cutter hole of cutting ferrule 3a snaps in the outer wall of nylon tube 4a automatically simultaneously, to make in the middle part of cutting ferrule 3a slightly arch protruding, cutting ferrule 3a afterbody also radial contraction holds nylon tube 4a tightly, thus realizes reliable joint and seal.
The main assembly technology of this kind of Bite type fittings comprises: nut assembling, cutting ferrule assembling, withhold and fitting joint body, wherein the process of withholding is comparatively crucial operation, and the process of withholding is formed between frock with cutting ferrule 3a firmly contact thus reach the object of holding nylon tube 4a tightly.
But in this Bite type fittings, the hard contact between frock with cutting ferrule 3a exists destructiveness, nylon tube 4a exists by the disconnected risk of card; And this process easily causes the sealing surface of cutting ferrule 3a damaged; In the process of tightening at nut 2a and fittings body 1a in addition, also formed between the conical surface of cutting ferrule 3a and the circular cone of fittings body 1a and firmly contact, and the deformation that cutting ferrule 3a produces is uncontrollable, these defects all can make joint occur the situation of poor sealing, thus cause weakening of braking function even to be lost efficacy, certain hidden danger is brought to personal safety.
Model utility content
The purpose of this utility model proposes a kind of locking casing type sealing joint, air brake piping and fuel pipe, can reach more excellent sealability.
For achieving the above object, the utility model provides a kind of locking casing type sealing joint on the one hand, comprise sealing joint body 1, described sealing joint body 1 comprises sealed end and connecting end, described connecting end is connected with nylon tube 5, described sealed end is connected with jointing body 3 by snap-in structure, and the outer wall of described sealed end and the hole wall of described jointing body 3 are formed to contact at fitting surface place and seal.
Further, the hole that described jointing body 3 coordinates with described sealed end is taper hole, and the shape and size of described sealed end and described taper hole suitable.
Further, described sealed end offers groove on described fitting surface, is provided with seal ring 2 in described groove.
Further, the material of described seal ring 2 is fluorine rubber.
Further, the position that described sealed end is being connected with described connecting end is provided with boss, spacing to described sealing joint body 1 on the surface that described snap-in structure can be made to be stuck in described boss.
Further, described boss is taper, can be suitable with the taper chamfering of described snap-in structure internal holes feather edge.
Further, described connecting end is ring hangnail.
For achieving the above object, the utility model provides a kind of air brake piping on the other hand, comprise: above-mentioned locking casing type sealing joint, jointing body 3, snap-in structure and nylon tube 5, connecting end is connected with described nylon tube 5, and sealed end is connected with described jointing body 3 by described snap-in structure.
Further, snap-in structure is union nut 4, and the internal thread of described union nut 4 is formed with the outside thread that described jointing body 3 is arranged and is threaded.
For achieving the above object, the utility model provides a kind of fuel pipe more on the one hand, comprise: above-mentioned locking casing type sealing joint, jointing body 3, snap-in structure and nylon tube 5, connecting end is connected with described nylon tube 5, and sealed end is connected with described jointing body 3 by described snap-in structure.
Based on technique scheme, the locking casing type sealing joint of the utility model embodiment, by link position and sealing station are provided separately, avoid the hard contact formed when prior art middle joint connects to have an impact to sealability, more excellent sealing effect can be reached, the further risk reducing generation oil gas and reveal, thus improve the Security of automobile air brake pipeline and fuel pipe work.In addition, this kind of locking casing type sealing joint does not need strictly to control locking torque when mounted yet, and disassembly process is very convenient, and after assembling, sealing station can not be destroyed, and this locking casing type sealing joint can be reused.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of prior art locking casing type sealing joint;
Fig. 2 is the structural representation of an embodiment of the utility model locking casing type sealing joint;
Fig. 3 is the exploded view of an embodiment of the utility model locking casing type sealing joint;
Fig. 4 is the sectional view of the decomposing state of an embodiment of the utility model locking casing type sealing joint;
Fig. 5 is the sectional view of the assembling condition of an embodiment of the utility model locking casing type sealing joint;
Fig. 6 is the actual entrucking view of an embodiment of the utility model locking casing type sealing joint.
Description of reference numerals
1a-fittings body; 2a-nut; 3a-cutting ferrule; 4a-nylon tube;
1-sealing joint body; 2-seal ring; 3-jointing body; 4-union nut; 5-nylon tube.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Locking casing type sealing joint of the prior art mainly relies on cutting ferrule 3a to realize the joint and seal of pipeline, for ensureing to connect reliably, cutting ferrule 3a can be made to be out of shape when assembling, hard contact can be formed between the cooperation conical surface of at this moment fittings body 1a and cutting ferrule 3a thus destroy sealing surface, and the deformation that cutting ferrule 3a produces in assembly process is also uncontrollable, joint can be made to occur the situation of poor sealing.Thus in prior art by the locking casing type sealing joint of joint and seal function setting at same place, there is intrinsic defect in structural design, the basis of existing structure form reach better sealing effect and there is very large difficulty.
The utility model provides a kind of new locking casing type sealing joint for this reason, as shown in Figure 6, comprise sealing joint body 1, sealing joint body 1 comprises sealed end and connecting end, connecting end is connected with nylon tube 5, sealed end is connected with jointing body 3 by snap-in structure, and the outer wall of sealed end and the hole wall of jointing body 3 are formed to contact at fitting surface place and seal.
Locking casing type sealing joint of the present utility model is by being provided separately link position and sealing station, avoid in prior art because cutting ferrule distortion has an impact to sealability with hard contact theed form between fittings body, more excellent sealing effect can be reached, the further risk reducing generation oil gas and reveal, thus improve the Security of automobile air brake pipeline and fuel pipe work.
In addition, the assembly process of locking casing type sealing joint of the prior art is comparatively complicated, also need to carry out preassembly in conjunction with frock, thus improve the success rate of joint assembling, there is destructiveness in hard contact the in preassembly process between frock with cutting ferrule, nylon tube exists by the disconnected risk of card, or the sealing surface of cutting ferrule can sustain damage to such an extent as to affect sealing effect, and this brings difficulty and uncertainty all to the assembly process of joint.And locking casing type sealing joint of the present utility model does not need to carry out preassembly when mounted, the locking torque strictly controlling snap-in structure is not needed yet, disassembly process is very convenient, and after assembling, sealing station can not be destroyed, and this locking casing type sealing joint can be reused.This advantage can not only improve conformity and the efficiency of assembling, can also reduce user cost.
In a kind of concrete structural type, as shown in Figure 6, the hole that jointing body 3 coordinates with sealed end is taper hole, and the shape and size of sealed end and taper hole suitable.Taper hole has the effect of guiding when erection joint, make installation process more convenient.In order to have stronger versatility, the cutting ferrule design principle that the conical surface design of the sealed end of sealing joint body 1 is followed in car gage part handbook, can use in pipeline connection in various types of automobile, the conical surface of sealed end and the contact position of jointing body 3 form sealing surface, similar with the sealing of cutting ferrule in prior art and the fittings body conical surface, but embodiment of the present utility model is when being connected with pipeline, can not damages sealing surface thus affect sealing effect.In design and course of working, engineering staff can reach good sealing effect by choosing suitable fit tolerance.
In addition, the hole that jointing body 3 coordinates with sealed end also can be straight hole, and carries out spacing by the boss at the bottom of jointing body 3 hole to sealing joint body 1, or is undertaken spacing by arranging suitable reach at jointing body 3 outer wall.
In order to optimize sealability further, the utility model provides a kind of preferred embodiment, and as shown in Figure 3 and Figure 4, sealed end offers groove on a mating, is traditionally arranged to be annular groove, as shown in Figure 2 and Figure 5, is provided with seal ring 2 in groove.Contact with the taper hole inwall of jointing body 3 after seal ring 2 is subject to pretightening force, thus more effectively seal.
Wherein, seal ring 2 has elasticity, can reach good sealability by the size of choose reasonable groove and seal ring 2, and due to the medium transmitted in pipeline be fuel oil or gas, thus preferably select the strong material of oil resistance.Those skilled in the art can select the seal ring of viton seal ring or other material.In addition, the quantity of seal ring 2 is not only limited to one yet, can arrange multiple along the axis at intervals of sealing joint body 1.
In another embodiment, the position that sealed end is being connected with connecting end is provided with boss, spacing to sealing joint body 1 on the surface that snap-in structure can be made to be stuck in boss.
Preferably, boss is taper, can be suitable with the taper chamfering of snap-in structure internal holes feather edge.As shown in Figures 2 to 6, if snap-in structure adopts union nut 4, be provided with step hole in union nut 4, one end that step hole diameter is larger is provided with internal thread, can fix with the outside thread on jointing body 3; The bottom edge in the hole that diameter is larger is provided with taper chamfering.When actual entrucking, when sealing joint body 1 loads from the threaded end of this step hole, this taper chamfering fastens with the cone boss on sealing joint body 1 and contacts, at this moment again jointing body 3 is screwed in union nut 4, sealing joint body 1 can be realized to be fixed on jointing body 3 by union nut 4.
In addition, boss also can be designed as right angle type, or the structure of the shapes such as circular arc, the hole feather edge of union nut 4 is designed to adaptive shape simultaneously, as long as the design of boss can make the sealed end of sealing joint body 1 and union nut 4 fasten, those skilled in the art can design according to the actual requirements.
In the above-described embodiment, connecting end is ring hangnail.Ring is connected with the inner wall smooth of nylon tube 5, and nylon tube 5 does not exist the disconnected phenomenon of card, and assembling is very easy.
In addition, the utility model also provides a kind of air brake piping and fuel pipe, comprise the locking casing type sealing joint of above-described embodiment, jointing body 3, snap-in structure and nylon tube 5, connecting end is connected with nylon tube 5, and sealed end is connected with jointing body 3 by snap-in structure.It is good that locking casing type sealing joint due to above-described embodiment possesses sealing characteristics, be easy to the feature of assembling, thus, the air brake piping adopting this locking casing type sealing joint to carry out connecting and fuel pipe also possess plurality of advantages, such as reduce the risk of gas or fuel oil generation leakage, thus improve the Security of automobile air brake pipeline and fuel pipe work; Also can realize when pipeline connects realizing assembling quickly and easily, significantly reduce assembly process causes damage possibility to SEALING FITTING.
Further, actual entrucking view as shown in Figure 6, snap-in structure is union nut 4, and the internal thread of union nut 4 is formed with the outside thread that jointing body 3 is arranged and is threaded.Carry out detailed elaboration in the embodiment of this concrete structure locking casing type sealing joint above, repeated no more herein.
Engineering staff will be understood that, locking casing type sealing joint of the present utility model not only may be used in air brake piping and fuel pipe, also can be applied in other needs and carry out in the pipeline connected; Medium for Pipe transfer is not also restricted, and can be gas or liquid; Above-described embodiment in the utility model all to be applied as example on automobile, can certainly be used in the occasion that other needs to carry out pipeline connection.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And do not depart from the spirit of technical solutions of the utility model, all should be encompassed in the utility model request protection technological scheme scope in the middle of.
Claims (10)
1. a locking casing type sealing joint, it is characterized in that, comprise sealing joint body (1), described sealing joint body (1) comprises sealed end and connecting end, described connecting end is connected with nylon tube (5), described sealed end is connected with jointing body (3) by snap-in structure, and the outer wall of described sealed end and the hole wall of described jointing body (3) are formed to contact at fitting surface place and seal.
2. locking casing type sealing joint according to claim 1, is characterized in that, the hole that described jointing body (3) coordinates with described sealed end is taper hole, and the shape and size of described sealed end and described taper hole suitable.
3. locking casing type sealing joint according to claim 2, is characterized in that, described sealed end offers groove on described fitting surface, is provided with seal ring (2) in described groove.
4. locking casing type sealing joint according to claim 3, is characterized in that, the material of described seal ring (2) is fluorine rubber.
5. locking casing type sealing joint according to claim 2, it is characterized in that, the position that described sealed end is being connected with described connecting end is provided with boss, spacing to described sealing joint body (1) on the surface that described snap-in structure can be made to be stuck in described boss.
6. locking casing type sealing joint according to claim 5, is characterized in that, described boss is taper, can be suitable with the taper chamfering of described snap-in structure internal holes feather edge.
7. locking casing type sealing joint according to claim 1, is characterized in that, described connecting end is ring hangnail.
8. an air brake piping, it is characterized in that, based on claim 1 ~ 7 arbitrary described locking casing type sealing joint, jointing body (3), snap-in structure and nylon tube (5), connecting end is connected with described nylon tube (5), and sealed end is connected with described jointing body (3) by described snap-in structure.
9. air brake piping according to claim 8, it is characterized in that, snap-in structure is union nut (4), and the internal thread of described union nut (4) is formed with the upper outside thread arranged of described jointing body (3) and is threaded.
10. a fuel pipe, it is characterized in that, based on claim 1 ~ 7 arbitrary described locking casing type sealing joint, jointing body (3), snap-in structure and nylon tube (5), connecting end is connected with described nylon tube (5), and sealed end is connected with described jointing body (3) by described snap-in structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022512.8U CN204533896U (en) | 2015-01-14 | 2015-01-14 | Locking casing type sealing joint, air brake piping and fuel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022512.8U CN204533896U (en) | 2015-01-14 | 2015-01-14 | Locking casing type sealing joint, air brake piping and fuel pipe |
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| Publication Number | Publication Date |
|---|---|
| CN204533896U true CN204533896U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520022512.8U Active CN204533896U (en) | 2015-01-14 | 2015-01-14 | Locking casing type sealing joint, air brake piping and fuel pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN204533896U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351131A (en) * | 2015-11-30 | 2016-02-24 | 重庆小康工业集团股份有限公司 | Engine high-pressure fuel pipe structure |
| CN106122621A (en) * | 2016-08-26 | 2016-11-16 | 安徽北科机械有限公司 | A kind of fixed guide sizing double containment method and sealing device thereof |
| CN106837547A (en) * | 2017-03-28 | 2017-06-13 | 佛山市云系科技有限公司 | A kind of washer for cleaning automobile exhaust pipe |
| CN106870839A (en) * | 2016-12-27 | 2017-06-20 | 潍柴动力股份有限公司 | A kind of sucker of supercharger attachment structure and connection method |
| CN111806414A (en) * | 2020-07-16 | 2020-10-23 | 中车大同电力机车有限公司 | Locomotive pipe joint and locomotive with same |
| CN113405008A (en) * | 2021-07-07 | 2021-09-17 | 常州科华电伴热器材有限公司 | Intelligent externally-hung type oiling device for crown block |
-
2015
- 2015-01-14 CN CN201520022512.8U patent/CN204533896U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351131A (en) * | 2015-11-30 | 2016-02-24 | 重庆小康工业集团股份有限公司 | Engine high-pressure fuel pipe structure |
| CN106122621A (en) * | 2016-08-26 | 2016-11-16 | 安徽北科机械有限公司 | A kind of fixed guide sizing double containment method and sealing device thereof |
| CN106870839A (en) * | 2016-12-27 | 2017-06-20 | 潍柴动力股份有限公司 | A kind of sucker of supercharger attachment structure and connection method |
| CN106870839B (en) * | 2016-12-27 | 2019-08-27 | 潍柴动力股份有限公司 | A kind of sucker of supercharger connection structure and connection method |
| CN106837547A (en) * | 2017-03-28 | 2017-06-13 | 佛山市云系科技有限公司 | A kind of washer for cleaning automobile exhaust pipe |
| CN111806414A (en) * | 2020-07-16 | 2020-10-23 | 中车大同电力机车有限公司 | Locomotive pipe joint and locomotive with same |
| CN113405008A (en) * | 2021-07-07 | 2021-09-17 | 常州科华电伴热器材有限公司 | Intelligent externally-hung type oiling device for crown block |
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| GR01 | Patent grant |