CN208347894U - A kind of rear end cap assemblies of exhaust pipe manifold - Google Patents

Abstract

Rear end cap assemblies disclosed by the utility model, including rear end cap and sealing flange, the outlet of the rear end cap is connect by sealing flange with external pipe, the center of the sealing flange opens up external pipe mounting hole, the outer wall of external pipe is equipped with one group of detent convex body, corresponding position opens up detent channel in inner wall of the hole installing, and external pipe insertion mounting hole is interior and is connect sealing flange with external pipe with the cooperation of detent channel by detent convex body；Matched screw thread is equipped at the exit of rear end cap and the nozzle of external pipe, rear end cap is threadedly engaged with external pipe and connect；Hinged locking position on sealing flange, rear end cover outer wall are equipped with lock, pass through the relative position of locking position and cooperation the locking rear end cap and sealing flange of lock.Exhaust manifold rear end provided by the utility model cap assemblies are convenient for assembling and switching performance is good, and connective stability is higher compared with existing rear end cap assemblies, and the sealing effect of exhaust manifold port is more preferable, guarantee exhaust system normal operation.

Description

A kind of rear end cap assemblies of exhaust pipe manifold

Technical field

The utility model belongs to automobile parts processing technique field, and in particular to a kind of rear end cap group of exhaust pipe manifold Part.

Background technique

In car engine exhaust system, exhaust manifold is very important component, exhaust manifold be generally wall it is very thick and The steel-casting of quality weight uses stainless steel pipe, and exhaust manifold is connected with engine cylinder block, by the exhaust collection of each cylinder In get up to import exhaust main, the pipeline that band is disagreed.Exhaust manifold is needed through rear end cap assemblies and escape pipe in assembly Road connection, for the normal operation for guaranteeing exhaust system, it is desirable that rear end cap assemblies are good by the outlet of exhaust manifold and outlet pipe Sealed connection, however to be frequently present of sealed connection property bad for existing exhaust manifold rear end cap assemblies, and easy misplace falls off Problem causes exhaust manifold and external pipe to be unable to good connection, generates exhaust failure, influences normal use.

Summary of the invention

Goal of the invention: the utility model aim is in view of the deficiencies of the prior art, to provide a kind of easy for installation, sealing The rear end cap assemblies of the good exhaust pipe manifold of switching performance.

Technical solution: a kind of rear end cap assemblies of exhaust pipe manifold described in the utility model, including rear end cap and sealing The outlet of flange, the rear end cap is connect by sealing flange with external pipe, and the center of the sealing flange opens up extension tube attached The outer wall of road mounting hole, the external pipe is equipped with one group of detent convex body, and corresponding position opens up card in the inner wall of the hole installing Bit port, external pipe are inserted into the mounting hole and are cooperated by detent convex body and detent channel by sealing flange and extension tube attached Road connection；Matched screw thread, rear end cap and external pipe spiral shell are equipped at the exit of the rear end cap and the nozzle of external pipe Line is cooperatively connected；Hinged locking position on the sealing flange, rear end cover outer wall are equipped with lock, pass through the locking position and lock Cooperation locking rear end cap and sealing flange relative position.

Further, to improve lock-bit fiting effect, the detent channel is broken line channel, is divided into three sections, from top to bottom Successively include be inserted perpendicularly into section, arc screws section and reversed lock-bit section, the detent convex body is spherical convex body, and detent convex body is successively Into be inserted perpendicularly into section, arc screws section and reversed lock-bit section, its position is locked by the reversed lock-bit section, prevents sealing flange It is opposite with external pipe to jump up and down.

Further, to be easily installed while, lock-bit effect, the reversed lock-bit section and the phase for being inserted perpendicularly into section are improved To 75 ° >=α >=60 ° of angle.

Further, the buffer function when present apparatus is interfered by external vibratory forces is improved, prevents component because damaged by external force, The sealing flange includes upper head plate and bottom plate, and the corresponding position on the upper head plate and bottom plate opens up external pipe installation The upper surface in hole, the bottom plate is equipped with buffer layer, and the upper head plate is connected with bottom plate by appended claims.

Further, described to be inserted perpendicularly into section and arc screws section to increase detent convex body by the resistance leapt up in external force In on upper head plate, reversed lock-bit section is located on bottom plate.

Further, buffering effect is improved to be maximized, the upper surface of the buffer layer has equally distributed sawtooth Shape protrusion.

The utility model has the advantages that (1) exhaust manifold rear end cap assemblies provided by the utility model are convenient for assembling and switching performance is good, Connective stability is higher compared with existing rear end cap assemblies, and the sealing effect of exhaust manifold port is more preferable, guarantees exhaust system Normal operation；(2) present apparatus improves buffering effect of the rear end cap assemblies by external force when by the distinctive sealing flange of design, Always the exit seal of position exhaust manifold；(3) in the present apparatus by designing distinctive detent channel, make sealing flange and outer The good cooperation in adapter tube road, and bad, the problem of sealing is deteriorated is combined both caused by can effectivelying prevent because of External force interference.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the concrete structure schematic diagram in detent channel in the utility model；

Fig. 3 is the decomposition texture schematic diagram of sealing flange in the utility model；

Wherein: 1, rear end cap, 2, sealing flange, 21, upper head plate, 22, bottom plate, 221, buffer layer, 222, zigzag it is convex Rise, 3, external pipe, 4, detent channel, 41, be inserted perpendicularly into section, 42, arc screw section, 43, reversed lock-bit section, 5, locking position.

Specific embodiment

Technical solutions of the utility model are described in detail below by attached drawing, but the protection scope of the utility model It is not limited to the embodiment.

Embodiment 1: a kind of rear end cap assemblies of exhaust pipe manifold, including rear end cap 1 and sealing flange 2, the rear end cap 1 Outlet connect with external pipe 3 by sealing flange 2, the center of the sealing flange 2 opens up external pipe mounting hole, described The outer wall of external pipe is equipped with one group of detent convex body, and corresponding position opens up detent channel in the inner wall of the hole installing, and detent is logical Road 4 is broken line channel, is divided into three sections, from top to bottom successively include be inserted perpendicularly into section 41, arc screws section 42 and reversed lock-bit section 43, the detent convex body is spherical convex body, and external pipe is inserted into the mounting hole, and detent convex body, which sequentially enters, is inserted perpendicularly into section 41, arc screws section 42 and reversed lock-bit section 43, and sealing flange 2 is connect with external pipe 3, is locked by the reversed lock-bit section 33 Its fixed position prevents sealing flange 2 from jumping up and down relatively with external pipe 3；The exit of the rear end cap 1 and external pipe Matched screw thread is equipped at nozzle, rear end cap 1 is threadedly engaged with external pipe 3 and connect；Hinged locking position on the sealing flange 2 5,1 outer wall of rear end cap is equipped with lock, passes through the phase of the locking position 5 and cooperation the locking rear end cap 1 and sealing flange 2 of lock To position.In the present apparatus, reversed lock-bit section 43 is 60 ° with the relative angle α for being inserted perpendicularly into section 41, and sealing flange 2 includes upper end Plate 21 and bottom plate 22, the corresponding position on the upper head plate 21 and bottom plate 22 open up external pipe mounting hole, the lower end The upper surface of plate 22 is equipped with buffer layer 221, and the upper surface of buffer layer 221 has an equally distributed zigzag protrusion 222, it is described on End plate 21 is connected with bottom plate 22 by appended claims, and detent channel is inserted perpendicularly into section 41 and arc screws section 42 and is located at upper end On plate 21, reversed lock-bit section 43 is located on bottom plate 22.

As described above, although the utility model has been indicated and described referring to specific preferred embodiment, it must not It is construed to the limitation to the utility model itself.In the spirit and scope for not departing from the utility model that appended claims define Under the premise of, it can various changes can be made in the form and details to it.

Claims (6)

1. a kind of rear end cap assemblies of exhaust pipe manifold, including rear end cap and sealing flange, the outlet of the rear end cap passes through close Envelope flange is connect with external pipe, it is characterised in that: the center of the sealing flange opens up external pipe mounting hole, described external The outer wall of pipeline is equipped with one group of detent convex body, and corresponding position opens up detent channel in the inner wall of the hole installing, and external pipe is inserted Enter in the mounting hole and cooperated by detent convex body with detent channel and connect sealing flange with external pipe；The rear end cap Exit and external pipe nozzle at be equipped with matched screw thread, rear end cap is threadedly engaged with external pipe and connect；It is described close Hinged locking position on flange is sealed, rear end cover outer wall is equipped with lock, locks rear end cap by the cooperation of the locking position and lock With the relative position of sealing flange.

2. the rear end cap assemblies of exhaust pipe manifold according to claim 1, it is characterised in that: the detent channel is broken line Channel is divided into three sections, from top to bottom successively include be inserted perpendicularly into section, arc screws section and reversed lock-bit section, the detent convex body For spherical convex body, detent convex body sequentially enters and is inserted perpendicularly into section, arc screws section and reversed lock-bit section, by the reversed lock-bit section Its position is locked, prevents sealing flange is opposite with external pipe from jumping up and down.

3. the rear end cap assemblies of exhaust pipe manifold according to claim 2, it is characterised in that: the reversed lock-bit section and hang down 75 ° >=α >=60 ° of relative angle of straight inserting paragraph.

4. the rear end cap assemblies of exhaust pipe manifold according to claim 2, it is characterised in that: the sealing flange includes upper End plate and bottom plate, the corresponding position on the upper head plate and bottom plate open up external pipe mounting hole, the bottom plate it is upper Surface is equipped with buffer layer, and the upper head plate is connected with bottom plate by appended claims.

5. the rear end cap assemblies of exhaust pipe manifold according to claim 4, it is characterised in that: described to be inserted perpendicularly into section and arc Shape screws section and is located on upper head plate, and reversed lock-bit section is located on bottom plate.

6. the rear end cap assemblies of exhaust pipe manifold according to claim 4, it is characterised in that: the upper surface of the buffer layer With equally distributed zigzag protrusion.