CN208534594U - A kind of exhaust fitting being connected firmly - Google Patents

Abstract

The utility model discloses a kind of exhaust fittings being connected firmly, it is related to a kind of auto parts and components, including mounting cylinder and the stop collar for being integrally formed at mounting cylinder side outer wall, the inner wall of the mounting cylinder is provided with abutment ring in the side far from stop collar, mounting cylinder is provided with the first external screw thread on side outer wall of the stop collar towards abutment ring, and silencer connecting tube and exhaust manifold are provided with the first internal screw thread being engaged with the first external screw thread accordingly；Mounting cylinder is provided with the second internal screw thread on side inner wall of the abutment ring towards stop collar, and automobile exhaust pipe is provided with the second external screw thread being engaged with the second internal screw thread accordingly.The utility model increases the firmness of the connection of exhaust fitting, reduces vehicle exhaust a possibility that automobile exhaust pipe junction leaks, reduces pollution of the vehicle exhaust to environment.

Description

A kind of exhaust fitting being connected firmly

Technical field

The utility model relates to a kind of auto parts and components, in particular to a kind of exhaust fitting being connected firmly.

Background technique

Automobile exhaust pipe is installed between muffler for motor and exhaust manifold, is connected by exhaust fitting, is made Whole gas extraction system is in Flexible spacecraft, to play the role of damping noise reduction, facilitate installation and extend the exhausting silencer system service life. With national policy stepping up for levels of emissions, the tail gas leakage of exhaust system is more and more concerned, and wherein automobile is arranged The leakproofness of tracheae is the main reason for determining leakage.

Currently used for connecting the exhaust fitting of automobile exhaust pipe as shown in Figure 1, including mounting cylinder 11 and being integrally formed at The stop collar 12 of 11 side outer wall of mounting cylinder；Referring to fig. 2, the both ends of automobile exhaust pipe 2 correspondence by way of interference fit is worn Loaded in two mounting cylinders 11, silencer connecting tube 3 and exhaust manifold 4 are equally sheathed on vapour respectively by way of interference fit 11 outside of mounting cylinder at 2 both ends of vehicle exhaust pipe, the company of automobile exhaust pipe 2 Yu exhaust manifold 4 and silencer connecting tube 3 is realized with this It connects.

However, automobile can accordingly generate vibration in the process of moving, the exhaust fitting 1 of automobile exhaust pipe 2 makes for a long time With in the process, it may appear that the situation of loosening, so that vehicle exhaust is leaked in 2 junction of automobile exhaust pipe, to environment It pollutes.

Utility model content

The purpose of the utility model is to provide a kind of exhaust fittings being connected firmly, and increase the connection of exhaust fitting Firmness reduces vehicle exhaust a possibility that automobile exhaust pipe junction leaks, reduces vehicle exhaust to environment Pollution.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of exhaust fitting being connected firmly, including mounting cylinder and the limit for being integrally formed at mounting cylinder side outer wall Ring, the inner wall of the mounting cylinder are provided with abutment ring in the side far from stop collar, and mounting cylinder is in stop collar towards abutment ring The first external screw thread is provided on the outer wall of side, silencer connecting tube and exhaust manifold are provided with accordingly to be engaged with the first external screw thread The first internal screw thread；Mounting cylinder is provided with the second internal screw thread, automobile exhaust pipe on side inner wall of the abutment ring towards stop collar It is provided with the second external screw thread being engaged with the second internal screw thread accordingly.

Using the above scheme, exhaust fitting disappears when connecting automobile exhaust pipe and exhaust manifold and silencer connecting tube First internal screw thread of sound device connecting tube and exhaust manifold is engaged with the first external screw thread of mounting cylinder, and the of the both ends of automobile exhaust pipe Two external screw threads are engaged with the second internal screw thread of mounting cylinder, and automobile exhaust pipe is connected between silencer and exhaust manifold with this, The mode that it is threadedly coupled is easy to operate, has good bonding strength and leakproofness, reduces exhaust fitting by thump And a possibility that loosening, the firmness of the connection of exhaust fitting is increased, vehicle exhaust is reduced and is connected in automobile exhaust pipe A possibility that place leaks, reduces pollution of the vehicle exhaust to environment.

Further preferably are as follows: on the stop collar be spaced apart be equipped with several first fixation holes, the silencer connecting tube and Offer the second fixation hole corresponding with the rotation of the first fixation hole on exhaust manifold respectively, first fixation hole and corresponding thereto The second fixation hole in fixed the first fastener being coated with for fixing stop collar Yu exhaust manifold and silencer connecting tube.

Using the above scheme, the first fastener is threaded onto the first fixation hole and the second fixation hole, increases silencer connection Pipe or the bonding strength between exhaust manifold and exhaust fitting, can be effectively reduced silencer connecting tube and mounting cylinder or exhaust A possibility that relatively rotating between manifold and mounting cylinder increases the firmness of the connection of exhaust fitting.

Further preferably are as follows: be spaced apart in the abutment ring and be equipped with several first mounting holes, opened on the automobile exhaust pipe It is solid in first mounting hole and the second mounting hole corresponding thereto equipped with the second mounting hole corresponding with the rotation of the first mounting hole Surely it is coated with the second fastener for fixing abutment ring and automobile exhaust pipe.

Using the above scheme, the second fastener is threaded onto the first mounting hole and the second mounting hole, increases automobile exhaust pipe Bonding strength between exhaust fitting, can be effectively reduced relatively rotate between automobile exhaust pipe and mounting cylinder can Energy property, and then increase the firmness of the connection of exhaust fitting.

Further preferably are as follows: the mounting cylinder is provided with the first guide surface on the side outer wall far from stop collar.

Using the above scheme, the first guide surface can aid in silencer connecting tube or exhaust manifold quickly with mounting cylinder set It connects, in order to accelerate the threaded connection of silencer connecting tube and mounting cylinder or exhaust manifold and mounting cylinder, improves automobile exhaust The joint efficiency of pipe and silencer and exhaust manifold.

Further preferably are as follows: the stop collar is obliquely installed towards a first externally threaded side ring surface, and the ring of stop collar The angle formed between face and the outer peripheral surface of mounting cylinder is obtuse angle.

Using the above scheme, in fixed silencer connecting tube and exhaust manifold, the anchor ring that stop collar is obliquely installed can One excessive effect of buffering is played to silencer connecting tube or exhaust manifold, reduces damage when it rotates excessive to stop collar Degree, extend exhaust fitting uses the time.

Further preferably are as follows: the stop collar is provided with chamfering far from the first externally threaded side outer edge.

Using the above scheme, chamfering can reduce stress of the stop collar in edge and concentrate, to reduce stop collar damage A possibility that, so that the structural strength of stop collar increases, have the characteristics that structure is simple, excellent effect.

Further preferably are as follows: the outer peripheral surface of the stop collar is provided with form friction pattern.

Using the above scheme, form friction pattern increases the coefficient of friction of the outer peripheral surface of stop collar, and then facilitates operator Stop collar is turned, help speed up the connection of exhaust fitting Yu automobile exhaust pipe, silencer and exhaust manifold.

Further preferably are as follows: the mounting cylinder is provided with the second guide surface on the side inner wall far from abutment ring.

Using the above scheme, the second guide surface can facilitate automobile exhaust pipe to be quickly inserted into mounting cylinder, and then conveniently Quickening automobile exhaust pipe is fixedly connected with mounting cylinder, and the connection for improving automobile exhaust pipe and silencer and exhaust manifold is imitated Rate.

In conclusion the utility model has the following beneficial effects:

1, the utility model is by the way that the first external screw thread is engaged with the first internal screw thread, the second external screw thread is engaged with the second internal screw thread Mode realize the connection between exhaust fitting and automobile exhaust pipe, silencer connecting tube and exhaust manifold, reduce exhaust Pipe fitting is occurred a possibility that loosening by thump, increases the firmness of the connection of exhaust fitting, reduces vehicle exhaust A possibility that automobile exhaust pipe junction leaks, pollution of the vehicle exhaust to environment is reduced；

2, the utility model passes through the first fixation hole, the second fixation hole, the first fastener, the first mounting hole, the second installation The setting in hole, the second fastener is reduced and is sent out between exhaust fitting and automobile exhaust pipe, silencer connecting tube and exhaust manifold A possibility that raw relative rotation, increase the firmness of the connection of exhaust fitting；

3, the utility model has by the first guide surface, the second guide surface, the setting of stop collar end slope and form friction pattern Help the Fast Installation between exhaust fitting and automobile exhaust pipe, silencer connecting tube and exhaust manifold, improves automobile row Joint efficiency between tracheae and silencer and exhaust manifold.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of existing exhaust fitting；

Fig. 2 is the inner connecting structure of existing exhaust fitting and automobile exhaust pipe, silencer connecting tube, exhaust manifold Schematic diagram；

Fig. 3 is the structural schematic diagram of the exhaust fitting of the utility model；

Fig. 4 is the exhaust fitting and automobile exhaust pipe, silencer connecting tube, the internal junction of exhaust manifold of the utility model Structure perspective view of the explosion.

In figure, 1, exhaust fitting；2, automobile exhaust pipe；3, silencer connecting tube；4, exhaust manifold；5, spiral shell in first Line；6, the second fixation hole；7, the first fastener；8, the second fastener；11, mounting cylinder；111, abutment ring；1111, the first installation Hole；112, the first external screw thread；113, the second internal screw thread；114, the first guide surface；115, the second guide surface；12, stop collar；121, First fixation hole；122, chamfering；123, form friction pattern；21, the second external screw thread；22, the second mounting hole.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

A kind of exhaust fitting being connected firmly referring to Fig. 3, including mounting cylinder 11 and is integrally formed at 11 side of mounting cylinder The stop collar 12 of outer wall.

Referring to Fig. 3 and Fig. 4, each automobile exhaust pipe 2 has been correspondingly connected with an exhaust fitting 1, automobile row at its both ends The both ends of tracheae 2 are connect with silencer connecting tube 3 and exhaust manifold 4 respectively by exhaust fitting 1.Wherein, in each exhaust In pipe fitting 1, the inner wall of mounting cylinder 11 is provided with an abutment ring 111 in the side far from stop collar 12, and mounting cylinder 11 is limiting Position ring 12 is towards being provided with the first external screw thread 112,4 phase of silencer connecting tube 3 and exhaust manifold on the side outer wall of abutment ring 111 That answers is provided with the first internal screw thread 5 being engaged with the first external screw thread 112；Mounting cylinder 11 is in abutment ring 111 towards stop collar 12 It is provided with the second internal screw thread 113 on the inner wall of side, automobile exhaust pipe 2 is provided with the be engaged with the second internal screw thread 113 accordingly Two external screw threads 21.

Mounting cylinder 11 is provided with cricoid first guide surface 114 on the side outer wall far from stop collar 12, with this Silencer connecting tube 3 and exhaust manifold 4 is facilitated quickly to be set on mounting cylinder 11；Mounting cylinder 11 is in separate abutment ring 111 It is additionally provided with cricoid second guide surface 115 on the inner wall of side, and then is convenient for 2 quick insertion mounting cylinder 11 of automobile exhaust pipe In.

It is spaced apart on stop collar 12 and is equipped with several first fixation holes 121, in silencer connecting tube 3 and exhaust manifold 4 respectively It offers and rotates corresponding second fixation hole 6 with the first fixation hole 121, the first fixation hole 121 and corresponding thereto second fixed Fixed in hole 6 to be coated with first fastener 7, the first fastener 7 is screw, solid with the first fixation hole 121 and second respectively Determine the inner thread connection in hole 6, consolidating for stop collar 12 and exhaust manifold 4 or stop collar 12 and silencer connecting tube 3 is realized with this Fixed connection.

Stop collar 12 is obliquely installed towards a side ring surface of the first external screw thread 112, and the anchor ring and peace of the stop collar 12 The angle formed between the outer peripheral surface of fitted tube 11 is obtuse angle, to play a buffering to silencer connecting tube 3 or exhaust manifold 4 Excessive effect, stop collar 12 are provided with chamfering 122 in the side outer edge far from the first external screw thread 112, reduce stop collar 12 Stress in edge is concentrated, and the damage of stop collar 12 is reduced.The outer peripheral surface of stop collar 12 is additionally provided with form friction pattern 123, friction Line 123 is staggered in netted, to facilitate the turning to stop collar 12 of operator.

It is spaced apart in abutment ring 111 and is equipped with several first mounting holes 1111, offered on automobile exhaust pipe 2 and the first installation Hole 1111 rotates corresponding second mounting hole 22, and fixation installs in the first mounting hole 1111 and the second mounting hole 22 corresponding thereto Have second fastener 8, the second fastener 8 is similarly screw, respectively with the first mounting hole 1111 and the second mounting hole 22 Inner thread connection realizes being fixedly connected for abutment ring 111 and automobile exhaust pipe 2 with this.

Operating condition is installed:

Exhaust fitting 1 is when connecting automobile exhaust pipe 2 and exhaust manifold 4 and silencer connecting tube 3, automobile exhaust pipe 2 Both ends be threadedly coupled a mounting cylinder 11 respectively so that the first mounting hole 1111 in abutment ring 111 on automobile exhaust pipe 2 The second mounting hole 22 alignment, by the second fastener 8 fixation be arranged in the first mounting hole 1111 and the second mounting hole 22, with reality Existing mounting cylinder 11 is fixedly connected with automobile exhaust pipe 2；Then silencer connecting tube 3 and exhaust manifold 4 are threadedly coupled respectively In on 11 outer wall of mounting cylinder at 2 both ends of automobile exhaust pipe, so that the first fixation hole 121 and silencer connecting tube 3 of stop collar 12 Or the second fixation hole 6 alignment of exhaust manifold 4, the first fastener 7 is threaded onto the first fixation hole 121 and the second fixation hole 6, And then realize silencer connecting tube 3 and being fixedly connected between automobile exhaust pipe 2 or exhaust manifold 4 and automobile exhaust pipe 2, have Good bonding strength and leakproofness.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as within the protection scope of the present utility model all by the protection of Patent Law.

Claims (8)

1. a kind of exhaust fitting being connected firmly including mounting cylinder (11) and is integrally formed at mounting cylinder (11) side outer wall Stop collar (12), which is characterized in that the inner wall of the mounting cylinder (11) is provided with abutment ring in the side far from stop collar (12) (111), mounting cylinder (11) is provided with the first external screw thread (112) on side outer wall of the stop collar (12) towards abutment ring (111), Silencer connecting tube (3) and exhaust manifold (4) are provided with the first internal screw thread (5) being engaged with the first external screw thread (112) accordingly； Mounting cylinder (11) is provided with the second internal screw thread (113) on side inner wall of the abutment ring (111) towards stop collar (12), automobile row Tracheae (2) is provided with the second external screw thread (21) being engaged with the second internal screw thread (113) accordingly.

2. a kind of exhaust fitting being connected firmly according to claim 1, which is characterized in that on the stop collar (12) Be spaced apart and be equipped with several first fixation holes (121), offered on the silencer connecting tube (3) and exhaust manifold (4) respectively and First fixation hole (121) rotates corresponding second fixation hole (6), first fixation hole (121) and second consolidating corresponding thereto Determine fixed the first fastening being coated with for fixing stop collar (12) and exhaust manifold (4) and silencer connecting tube (3) in hole (6) Part (7).

3. a kind of exhaust fitting being connected firmly according to claim 1 or 2, which is characterized in that the abutment ring (111) it is spaced apart on and is equipped with several first mounting holes (1111), offered and the first mounting hole on the automobile exhaust pipe (2) (1111) corresponding second mounting hole (22) is rotated, first mounting hole (1111) and the second mounting hole (22) corresponding thereto Middle fixation is coated with the second fastener (8) for fixing abutment ring (111) and automobile exhaust pipe (2).

4. a kind of exhaust fitting being connected firmly according to claim 1, which is characterized in that the mounting cylinder (11) exists The first guide surface (114) are provided on side outer wall far from stop collar (12).

5. a kind of exhaust fitting being connected firmly according to claim 4, which is characterized in that stop collar (12) court Be obliquely installed to a side ring surface of the first external screw thread (112), and the outer peripheral surface of the anchor ring of stop collar (12) and mounting cylinder (11) it Between the angle that is formed be obtuse angle.

6. a kind of exhaust fitting being connected firmly according to claim 5, which is characterized in that the stop collar (12) is remote Side outer edge from the first external screw thread (112) is provided with chamfering (122).

7. a kind of exhaust fitting being connected firmly according to claim 1, which is characterized in that the stop collar (12) Outer peripheral surface is provided with form friction pattern (123).

8. a kind of exhaust fitting being connected firmly according to claim 1, which is characterized in that the mounting cylinder (11) exists The second guide surface (115) are provided on side inner wall far from abutment ring (111).