CN213497611U

CN213497611U - Barrel shell, heat shield, exhaust system, connecting piece and frock

Info

Publication number: CN213497611U
Application number: CN202021160247.7U
Authority: CN
Inventors: 顾俊锋; 金正河; 杰拉德·伯特兰
Original assignee: Faurecia Emissions Control Technologies Development Shanghai Co Ltd
Current assignee: Faurecia Emissions Control Technologies Development Shanghai Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-06-22
Anticipated expiration: 2030-06-19
Also published as: DE202021103290U1

Abstract

The utility model provides a barrel shell, separate heat exchanger, exhaust system, connecting piece and frock. Wherein the cartridge housing comprises a first housing portion comprising a first housing body; a second housing part including a second housing body; the connecting piece comprises a connecting piece body and a bending part extending to the end part of the connecting piece body; wherein at least one of the first and second casing parts has a stepped part extending in a radial direction from a casing body thereof; the connecting piece respectively with first shell portion, second shell portion fixed connection the connecting piece with at least one of first shell portion, second shell portion's fixed connection includes the kink with the compact structure that the connecting piece body supported with the inside and outside wall surface of step portion respectively and leans on.

Description

Barrel shell, heat shield, exhaust system, connecting piece and frock

Technical Field

The utility model relates to an automobile exhaust purifies the field, in particular to barrel shell, separate heat exchanger and exhaust system, connecting piece and frock.

Background

Engine exhaust systems treat hot exhaust gases produced by the engine through various upstream exhaust components to reduce exhaust pollutants. The various upstream exhaust components may include one or more of the following: pipes, filters, valves, catalysts, mufflers, etc. For example, an upstream exhaust treatment component directs exhaust gas into a Diesel Oxidation Catalyst (DOC) having an inlet and an outlet, and a Diesel Particulate Filter (DPF) may be disposed downstream of the Diesel Oxidation Catalyst. Downstream of the diesel oxidation catalyst and the optional diesel particulate filter is a Selective Catalytic Reduction (SCR) catalyst having an inlet and an outlet. The outlet passes the exhaust to a downstream exhaust component. A mixer (mixer) is positioned downstream of the outlet of the DOC or DPF, upstream of the inlet of the SCR catalyst. Within the mixer, the exhaust gas produces a swirling or rotational motion. An injector (injector) is used to inject a reductant, such as an aqueous urea solution, into the exhaust stream upstream of the SCR catalyst so that the mixer can sufficiently mix the urea and exhaust together for discharge into the SCR catalyst for reduction to produce nitrogen and water to reduce the nitrogen oxide emissions of the engine.

The above-mentioned components such as DOC, PDF and SCR catalysts are arranged in a cylinder shell of the exhaust system, and the outer wall of the cylinder shell is provided with a heat insulating material to form a heat insulating cover of the exhaust system.

In the prior art, a cylinder shell is generally welded into a whole by a plurality of shell parts, but in a welding mode, the welding process is long in time consumption and needs to consume welding flux, namely, more working hours and materials are needed, so that the cost is high; and because the temperature of the exhaust system is high, there is a risk that thermal fatigue is liable to occur at the weld.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a barrel shell.

Another object of the utility model is to provide a separate heat exchanger.

It is yet another object of the present invention to provide an exhaust system.

It is yet another object of the present invention to provide a connector.

Yet another object of the utility model is to provide a tool.

A cartridge housing according to one aspect of the present invention includes a first housing portion including a first housing body; a second housing part including a second housing body; the connecting piece comprises a connecting piece body and a bending part extending to the end part of the connecting piece body; wherein at least one of the first and second casing parts has a stepped part extending in a radial direction from a casing body thereof; the connecting piece respectively with first shell portion, second shell portion fixed connection the connecting piece with at least one of first shell portion, second shell portion's fixed connection includes the kink with the compact structure that the connecting piece body supported with the inside and outside wall surface of step portion respectively and leans on.

In one or more embodiments of the cartridge housing, the first housing body further comprises a first opening, the first stepped portion of the first housing portion extending radially from the first opening; the second housing body further includes a second opening from which the second stepped portion of the second housing part extends in a radial direction.

In one or more embodiments of the cartridge housing, the first and second step portions are at circumferential ends of the first and second housing portions, respectively, and the first and second step portions extend in a radially outward direction.

In one or more embodiments of the cartridge housing, the connecting member is located at a circumferential end of one of the first housing portion or the second housing portion, the connecting member includes a first connecting member and a second connecting member, and the first connecting member and the first stepped portion are located at circumferential ends of the first housing portion, respectively; the second connecting piece and the second step portion are respectively located on two circumferential sides of the second shell portion, the bending portion of the first connecting piece is connected with the second step portion, and the bending portion of the second connecting piece is connected with the first step portion.

In one or more embodiments of the cartridge housing, the first connector, the first step, and the first housing body are one piece; the second connecting piece, the second step part and the second shell body are integrated.

In one or more embodiments of the cylinder shell, a first bending part and a second bending part extend from two ends of a connecting piece body of the connecting piece respectively, and the first bending part and the connecting piece body form a first pressing structure which is abutted against the inner wall surface and the outer wall surface of the first step part respectively; the second bending part and the connecting piece body form a second compression structure which is respectively abutted against the inner wall surface and the outer wall surface of the second step part; the first case portion has at least a pair of first step portions at both ends in the circumferential direction thereof, and the second case portion has at least a pair of second step portions corresponding to the pair of first step portions at both ends in the circumferential direction thereof.

In one or more embodiments of the cartridge housing, at least one of the first housing portion and the second housing portion further comprises a first extended stop portion and a second extended stop portion extending radially from the housing body, axially adjacent to each other; the first extending blocking part and the second extending blocking part axially block the first reinforcing ring and the second reinforcing ring respectively.

In one or more embodiments of the cartridge housing, at least one of the bend and the connector body is in pressure connection (clinking) with the step.

According to another aspect of the present invention, a heat shield comprises the cylinder housing and the heat insulating material.

An exhaust system according to the utility model discloses an aspect still further includes any one above the barrel casing, provide first space in the barrel casing, be provided with one or more among them diesel oxidation catalyst converter, diesel particulate trap ware, selective catalytic reduction catalyst converter in the first space.

According to the utility model discloses a connecting piece of still another aspect for connect barrel casing's first shell portion and second shell portion, include the connecting piece body and extend respectively in the first kink and the second kink at connecting piece body both ends, first kink perpendicular to connecting piece body, the second kink with connecting piece body is an inclination, connecting piece body's length L is greater than the length H1 of the first step portion of first shell portion and the length H2 sum of the second step portion of second shell portion, the length of first kink is less than the thickness T of barrel casing is subtracted to half of the length H1 of first step portion, the length of second kink is less than half of the length H2 of second step portion subtracts the thickness T of barrel casing.

According to the utility model discloses a frock of another aspect for a plurality of shell portion pressure connection with connecting piece and barrel shell, include: a first fixing part for supporting the step part of the connector and the shell part of the cylinder shell and fixing the first part of the connector on one side of the step part; the first pressure part is provided with a first pressure surface which can be contacted with the connecting piece so as to apply first pressure to bend the second part of the connecting piece; the second pressure part is provided with a second pressure surface which can be contacted with the bent second part so as to apply second pressure, so that the bent part of the connecting piece, the connecting piece body and the step part form a compression structure.

In one or more embodiments of the tool, the first pressure surface includes a first pressure inclined surface and a second pressure inclined surface, and the extending direction of the first pressure inclined surface intersects with the extending direction of the second pressure inclined surface; the first pressure part can move in a first direction to apply pressure to the connecting piece to form a bent part of the connecting piece; the second pressure part can move in a second direction, so that the second pressure surface is in contact with the bent second part to apply second pressure; wherein the first direction is parallel to a height direction of the stepped portion, and the second direction is perpendicular to the first direction.

In one or more embodiments of the tool, two ends of the first pressure part are respectively connected to the first fixing part and the second pressure part, the first pressure part can rotate around a first pivot, and the position of the first pivot is relatively fixed to the first fixing part; the second pressure part comprises a body and a pressure piece, the pressure piece is provided with the second pressure surface, the body can move along the second plane of the first pressure part, the pressure piece can rotate around a second pivot, and the position of the second pivot is relatively fixed on the body.

The utility model discloses an advance effect includes but not limited to:

through step portion to and the setting of the kink of connecting piece, make casing portion can be through the mode fixed connection of mechanical connection, thereby realize the high-efficient manufacturing of barrel shell, also reduced barrel shell processing manufacturing cost simultaneously, improved barrel shell's fatigue life, also make including its thermal shroud, exhaust system more reliable durable.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:

fig. 1 is a schematic structural diagram of a first housing portion according to an embodiment.

Fig. 2 is a schematic structural view of a cartridge housing according to an embodiment.

Fig. 3 and 4 are schematic structural diagrams illustrating connection between a connector and a step portion according to an embodiment.

Fig. 5A to 5D are schematic views illustrating a pressure connection process between a step and a connector according to an embodiment.

Fig. 6A to 6C are schematic diagrams illustrating a process of performing the pressure bonding process shown in fig. 5 by using the tool according to an embodiment.

Fig. 7 is a schematic structural diagram of step portions of the first housing portion and the second housing portion according to another embodiment.

Fig. 8 is a view from direction a-a of fig. 7.

Fig. 9 is a schematic view of a connector suitable for use in the alternative embodiment of fig. 7.

Fig. 10A to 10D are schematic views illustrating a pressure bonding process of the connector of another embodiment shown in fig. 9 to connect the step part shown in fig. 7.

Fig. 11A to 11B are schematic diagrams illustrating a pressure connection process shown in fig. 10A to 10D performed by the tool according to an embodiment.

Fig. 12 is a schematic structural view of the first extending stop portion, the second extending stop portion and the retaining ring according to one or more embodiments.

FIG. 13 is a flow diagram of a method of mechanical coupling between multiple housing portions according to one embodiment.

Detailed Description

The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and do not limit the scope of the invention.

Furthermore, references to "one embodiment," "an embodiment," and/or "some embodiments" mean a particular feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one or more embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Referring to fig. 1 to 4, in an embodiment, the cartridge housing 10 includes a first housing part 1, a second housing part 2, and a connection member 3. As shown in fig. 8, the cylinder case 10 and the heat insulating material 20 may constitute a heat shield 200 of the exhaust system. As shown in fig. 2, a first space 100 is provided in the cartridge housing 10, and one or more of a diesel oxidation catalyst, a diesel particulate trap, and a selective catalytic reduction catalyst may be provided in the first space 100 in the exhaust system. It will be appreciated that the cartridge housing 10 includes a number of housing portions that is not limited to the two semi-circular housing portions shown in the figures, but may be more. The structure of the housing part is described by taking the first housing part 1 as an example, the first housing part 1 includes a first housing body 11, and a first step part 12 extending from the first housing body 11 in a radial direction, and in the embodiment shown in fig. 1 to 4, the extending direction of the first step part 12 is extending radially outward, but not limited to this, and may also extend radially inward. The radial extension here does not mean that it is strictly along a straight line directed to the center of the circle, but means that the radial position of the first step portion 12 is different from the radial position of the first housing body 11. Referring to fig. 2 to 4, the connecting member 3 has a connecting member body 31 and a bent portion 32 connected to an end of the connecting member body 31, as shown in fig. 1, 2 and 4, an initial structure of the connecting member 3 may be a straight strip-shaped connecting member 30, and the connecting member body 31 and the bent portion 32 are formed by bending through a machining process, such as a pressing process. When the connecting element 3 fixedly connects the first housing portion 1 and the second housing portion 2, the structure of the connecting element 3 includes the connecting element body 31 and the bending portion 32, and the strip-shaped connecting element 30 shown in fig. 1 and 2 is only used for showing the initial structure of the connecting element 3, and does not mean that the connecting element 3 is still the straight strip-shaped connecting element 30 when actually connected.

For example, fig. 3 and 4 show a structure in which a first embodiment of the connector 3 is fixedly connected to a first housing part 1 and a second housing part 2, respectively, and one end of the connector 3 integrally extends from the second housing part 2 and is fixed to the second housing part 2; the other end of the connecting element 3 is pressed and bent by a straight strip-shaped connecting element 30 as shown in fig. 4, so that a bent part 32 and a connecting element body 31 as shown in fig. 3 are respectively abutted against the inner wall surface and the outer wall surface of the step part 12 to press the step part 12, and thus the connecting element 3 is fixedly connected with the first shell part 1.

Referring to the structure of the second embodiment of the present invention shown in fig. 7 to 10D, in which the connecting member 3 is fixedly connected to the first and

second housing portions

1 and 2, the connecting member 3 is a separately formed component having bent portions at both ends thereof, rather than one end of the connecting member 3 being an integral piece with one of the first and

second housing portions

1 and 2 and the other end extending with a bent portion to be connected to the other of the first and

second housing portions

1 and 2 as in the first embodiment. As shown in fig. 9, the connecting element 3 of the second embodiment is used for connecting the first housing portion 1 and the second housing portion 2 of the barrel housing 10, the connecting element body 311 of the connecting element 3 and the first bending portion 321 and the second bending portion 322 respectively extending at two ends of the connecting element body 311 are fixedly connected to the first step portion 12 of the first housing portion 1 and the second step portion 22 of the second housing portion 2, respectively, the first bending portion 321 is perpendicular to the connecting element body 311, and the second bending portion 322 and the connecting element body 311 form an inclined angle, which is generally 30 ° to 60 ° as shown in the figure. The first bending part 321 and the second bending part 322 are connected to two ends of the connecting member body 311 through an arc chamfer 323, and the radius of the arc chamfer 323 is equal to the thickness T of the cylinder housing 10, so as to reduce stress concentration during bending and pressure connection. The length L of the connector body 311 is greater than the sum of the height H1 of the first step portion 12 of the first housing portion 1 and the height H2 of the second step portion 22 of the second housing portion 2 by an amount of typically 2mm, i.e., typically L ═ H1+ H2+ 2; the length L1 of the first bent portion 321 is equal to half of the height H1 of the first step portion 3 minus the thickness T of the cylinder housing 10, and is smaller than 2mm, that is, L1 is equal to H1/2-T-2; the length of the second bent part 322 is smaller than half of the height H2 of the second stepped part minus the thickness T of the cylinder housing, and is smaller than 2mm, that is, L1 is H2/2-T-2. The design of the connector 3 can prevent the first bending portion 321 and the second bending portion 322 of the connector 3 from interfering with the first housing body 11 or the second housing body 21 when the first bending portion 321 and the second bending portion 322 of the connector 3 are pressed and bent to form a structure in which the first bending portion 321 abuts against the connector body 311, and the second bending portion 322 abuts against the inner and outer wall surfaces of the first step portion 12 and the second step portion 22, respectively.

The connecting piece of the first embodiment or the second embodiment has a structure in which the bending part and the connecting piece body abut against the inner wall surface and the outer wall surface of the step part, so that the pressing structure of the step part is realized, and the pressing structure can be realized through a pressure connection (clinging) process. A press joining (crimping) process, also referred to as rivetless press joining, is briefly described herein, wherein the rivetless press joining is a mechanical joining process in which plates are pressed together by using the cold deformability of the plates themselves, so that the plates are locally deformed and joined together, and no additional rivets are required, thereby reducing the manufacturing cost and causing no damage to the surfaces of the parts to be pressed together. The specific process steps of the first embodiment of the connecting member for forming the pressure connection are shown in fig. 5A to 5D and fig. 6A to 6C, and the specific process steps of the second embodiment of the connecting member for forming the pressure connection are shown in fig. 10A to 10D and fig. 11A to 11B, which will be described in detail below.

The embodiment that introduces above, through step portion, and the setting of the kink of connecting piece, make casing portion can be through the mode fixed connection of mechanical connection, it can replace traditional welding process even to have reduced to adopt the welding position, overcome and adopted welding process to connect consuming time longer and need consume the defect of solder, the cost is reduced, thereby realize the high-efficient manufacturing of barrel shell, barrel shell manufacturing cost has also been reduced simultaneously, the fatigue life of barrel shell has been improved, also make including its heat exchanger that insulates against heat, exhaust system is more reliable durable.

Specifically, in the first embodiment, one end of the connector body 31 is integrated with the first housing portion 1 or the second housing portion 2, and the other end of the connector body 31 extends to form a bent portion 32. The processing steps are simple. In the second embodiment, the connecting element 3 is formed separately, and the two ends of the connecting element body 311 extend to the first bending portion 321 and the second bending portion 322 respectively, which is more material-saving than the first embodiment, since one end of the connecting element body 31 and the first housing portion 1 or the second housing portion 2 are an integral piece, the manufacturing process usually cuts a whole piece of material to leave the connecting element 3, and consumes more material.

With continued reference to fig. 3 and 4, in some embodiments, the specific structure of the housing part may also be that the first housing body 11 further includes a first opening 111, the first step portion 12 extends from the first opening 111 in a radial direction, the second housing body 21 further includes a second opening 211, and the second step portion 22 extends from the second opening 211 in a radial direction, so that the structure may facilitate one-step forming of the step portion from the housing body, and simplify the processing process. The step extends in a direction generally radially outward as shown in fig. 1 to 4, but does not exclude the case where the step extends radially inward, for example, where there is a limitation on the external installation space of the cartridge housing 10, and the use of the step extending radially inward can reduce the occupation of the external space. As shown in fig. 1 to 4, the heights of the first opening 111 and the second opening 211 are respectively greater than the heights of the first step portion 12 and the second step portion 22, so that the connector can be prevented from being bent to form a bent portion, and the bent portion and the housing body are prevented from interfering in the pressing process of the wall surface of the step portion, and the design difficulty of the process and the tool is reduced. The radial direction mentioned above is a direction from the center to the periphery of the cylinder housing, a direction radially outward, i.e., from the center to the periphery, and a direction radially inward, i.e., from the periphery to the center.

With continued reference to fig. 1 to 4, the first step portion 12 and the second step portion 22 are respectively located at the circumferential ends of the first casing portion 1 and the second casing portion 2, so as to reduce the distance between the first casing portion 1 and the second casing portion 2 as much as possible, so that the connection between the first step portion 12 and the second step portion 22 via the connecting piece 3 has higher connection strength.

Referring to fig. 2, in some embodiments, the circumferential two ends of the first casing part 1 are respectively provided with a first step part 12 and a first connecting piece 301; the second housing part 2 has a second step 22 and a second connector 302 at both circumferential ends thereof; the second connecting piece 302 and the first step portion 12 form a compression structure with the inner wall surface and the outer wall surface abutting against each other, and the first connecting piece 301 and the second step portion 22 form a compression structure with the inner wall surface and the outer wall surface abutting against each other. It is understood that the connection structure of the step portion and the connecting piece is not limited to the above description, and both circumferential end edges of one of the first casing portion 1 and the second casing portion 2 may be the connecting piece 3 integrated therewith, and both circumferential end edges of the other one may be the step portion. Therefore, the connecting piece 3 and the step part can form an inner wall surface and an outer wall surface abutting pressing structure. Therefore, it is only necessary that at least one of the first and

second casing sections

1 and 2 has a stepped portion extending in the radial direction from the casing body thereof.

Referring to fig. 7 to 10D, in some embodiments, each of the first and

second casing portions

1 and 2 has a step portion extending in a radial direction from a casing body thereof, and both circumferential ends of the first casing portion 1 are first step portions 12, both circumferential ends of the second casing portion 2 are second step portions 22, the first and

second step portions

12 and 22 are connected by a separately formed connecting piece 3, and both ends of a connecting piece body 311 of the connecting piece 3 extend first and second

bent portions

321 and 322, respectively, as shown in fig. 10D, the first and second

bent portions

321 and 311 constitute a first pressing structure abutting against inner and outer wall surfaces of the first step portion 12, respectively; the second bending part 322 and the connecting member body 311 form a second pressing structure respectively abutted against the inner and outer wall surfaces of the second step part 22; the first housing section 1 has at least a pair of

first step portions

12, 12 at both ends in the circumferential direction thereof, and the second housing section 2 has at least a pair of

second step portions

22, 22 corresponding to the pair of

first step portions

12, 12 at both ends in the circumferential direction thereof, that is, a press-fit connection in which the first step portion 12 and the second step portion 22 are connected only on one side by the connecting piece 3 shown in fig. 10D, and the cartridge housing 10 has at least another identical or similar connecting piece 3 connecting the first step portion 12 and the second step portion 22.

As shown in fig. 1 and 12, in some embodiments, the first housing part 1 further has a first extending stop 13 and a second extending stop 14 extending radially from the first housing body 11, and axially adjacent to each other. The function of the cartridge housing 10 is as shown in fig. 12, and a first reinforcing ring 15 and a second reinforcing ring 16 are mounted on the inner wall of the cartridge housing 10 to increase the rigidity of the cartridge housing 10. The first extending stop portion 13 and the second extending stop portion 14 respectively axially stop the first reinforcing ring 15 and the second reinforcing ring 16 to prevent the two from moving axially. The specific structure of the extending stop portion is not limited to the flat plate structure shown in fig. 1 and 12, and may be in the shape of an arc plate or an L-shaped structure as long as the function of stopping the reinforcing ring can be achieved.

Referring to fig. 5A to 5D, 6A to 6C, and 10A to 10D, 11A to 11B, the method of mechanically connecting the first housing part 1 and the second housing part 2 of the cartridge housing 10 includes:

step S1: providing a stepped portion extending radially from a housing body thereof at least one of the first housing portion or the second housing portion;

step S2: connecting and fixing a first part of a connecting piece on one side of the step part;

step S3: bending the second part of the connecting piece;

step S4: and pressure-connecting the second portion with the stepped portion at the other side of the stepped portion.

Specifically, referring to the connecting piece 3 of the first embodiment shown in fig. 5A to 5D and 6A to 6C, in steps S1 and S2, the first housing part 1 and the connecting piece 3 are an integral piece, one end of the connecting piece 3 extends from the first housing part 1, the initial structure of the connecting piece 3 is a straight strip-shaped connecting piece 30, the strip-shaped connecting piece 30 is connected and fixed to the inner wall of the second stepped part 22 of the second housing part 2, and the strip-shaped connecting piece 30 has a straight section 300 higher than the second stepped part 22; in step S3, the straight section 300 is bent to the outer wall side of the step 22, and the straight section 300 is the bent section 32. In step S4, the bent portion 32 is pressed against the stepped portion 22, and the bent portion 32 is pressed against the second stepped portion 22.

Referring to fig. 10A to 10D, the connector 3 of the second embodiment shown in fig. 11A to 11B, in steps S1 and S2, the connector 3 is a separate component, and the first housing part 1 has the first step portion 12 and the second housing part 2 has the second step portion 22. In step S2, the second bent portion 322 of the connector 3 is fixedly connected to the inner wall side of the second stepped portion 22, and in steps S3 and S4, the connector body 311 located on the outer wall side of the second stepped portion 22 and the first stepped portion 12 is bent to be in pressure connection with the first stepped portion 12 and the second stepped portion 22, so that the second stepped portion 22 is pressed against the connector body 311 and the second bent portion 322. The connector 3 of the second embodiment further includes a step 5 of bending the first bending portion 321 to the inner wall side of the first step portion to form a pressing structure of the first bending portion 321 and the connector body 311 to the first step portion 12.

Referring to fig. 6A to 6C and 11A to 11B, the tool 4 for press-coupling the connection member 3 with the first and

second case parts

1 and 2 of the cartridge case 10 may include a first fixing portion 41, a first pressing portion 42, and a second pressing portion 43, the first fixing portion 41 connecting the step portion of the housing part of the cartridge case 10 with the connection member 3 such that the first portion of the connection member 3 is fixed to one side of the step portion. For example, as shown in fig. 6A, in some embodiments, the first fixing portion 41 fixes the connector body 31 of the connector 3 to the inner wall side of the first step portion 12, and supports the connector 3 and the first step portion 12; for example, as shown in fig. 11A, in some embodiments, the second bent portion 322 of the connector 3 of the first fixing portion 41 is fixed to the inner wall side of the second stepped portion 22, and supports the connector 3 and the second stepped portion 22. The first pressure part 42 has a first pressure surface 421, and the first pressure surface 421 can contact with the connecting member 3 to apply the first pressure so that the second part of the connecting member is bent. For example, as shown in fig. 6B, in some embodiments, the first pressure face includes a first pressure slope 422 and a second pressure slope 423, and the first pressure slope 422 intersects with the extending direction of the second pressure slope 423; the first pressure part 41 may be moved in the first direction D1 to apply pressure to the connection member 3 to form the bent part 32 of the connection member 3. For example, as shown in fig. 11A to 11B, the first pressure part 42 can rotate around the first pivot 424, the position of the first pivot 424 is relatively fixed to the first fixing part 41, and the first pressure surface 421 of the first pressure part 42 rotates around the first pivot 424 to bend the connecting member body 311 of the connecting member 3 to be in pressure connection with the outer walls of the second step part 22 and the second step part 12. The second pressure portion 43 has a second pressure surface, and the second pressure surface 431 can contact with the bent second portion to apply a second pressure, and the bent portion of the connector, the connector body and the step portion form a compression structure. Referring to fig. 6C, in some embodiments, the second pressure portion 43 may be movable in the second direction, so that the second pressure surface 431 contacts the bent portion 32, and applies a second pressure to the bent portion 32, so that the bent portion 32 is in pressure connection with the outer wall of the first step portion 12, and the bent portion 32, the connector body 31 and the first step portion 12 form a pressing structure. Referring also to fig. 11B, in some embodiments, the second pressure portion 43 includes a body 432 and a pressure member 433, the pressure member 433 has a second pressure surface 431, the body 432 is movable along the second surface 425 of the first pressure portion 42, the pressure member 433 is rotatable about a second pivot 434, and the second pivot 434 is fixed to the body 432 relatively, so that the second pressure surface 421 applies a second pressure to the first bending portion 321 to bend the first bending portion 321 to the inner wall of the first step portion 12 by rotating the pressure member 433 about the second pivot 434, so that the inner and outer walls of the first bending portion 321 and the connector body 331 at the first step portion 12 form a pressing structure for the first step portion 12. The pressure source for applying pressure described in the above embodiments may be an air pressure or hydraulic structure such as an air cylinder or an oil cylinder, which are all general structures known to those skilled in the art, and will not be described herein again, and the specific pressure for applying pressure is determined according to the requirement of pressure connection.

Bearing to know, the beneficial effect of adopting barrel shell, heat exchanger and exhaust system that above-mentioned embodiment introduced includes but not limited to, through step portion to and the setting of the connecting piece that has the kink, make casing portion can be through the mode fixed connection of pressure connection, thereby realize the high-efficient manufacturing of barrel shell, also reduced barrel shell processing manufacturing cost simultaneously, improved the fatigue life of barrel shell, also make including its heat exchanger that separates, exhaust system is more reliable durable.

Although the present invention has been disclosed in the above-mentioned embodiments, it is not intended to limit the present invention, and those skilled in the art may make variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims

1. A cartridge housing, comprising:

a first housing section including a first housing body;

a second housing part including a second housing body;

the connecting piece comprises a connecting piece body and a bending part extending to the end part of the connecting piece body;

wherein at least one of the first and second casing parts has a stepped part extending in a radial direction from a casing body thereof; the connecting piece respectively with first shell portion, second shell portion fixed connection the connecting piece with at least one of first shell portion, second shell portion's fixed connection includes the kink with the compact structure that the connecting piece body supported with the inside and outside wall surface of step portion respectively and leans on.

2. The cartridge housing of claim 1, wherein the first housing body further comprises a first opening, the first stepped portion of the first housing section extending radially from the first opening; the second housing body further includes a second opening from which the second stepped portion of the second housing part extends in a radial direction.

3. The cartridge housing of claim 2, wherein the first and second stepped portions are at circumferential ends of the first and second housing portions, respectively, the first and second stepped portions extending in a radially outward direction.

4. The cartridge housing according to claim 3, wherein the connecting member is located at a circumferential end of one of the first housing section or the second housing section, the connecting member including a first connecting member, a second connecting member, the first connecting member and the first stepped portion being located at circumferential ends of the first housing section, respectively; the second connecting piece and the second step portion are respectively located on two circumferential sides of the second shell portion, the bending portion of the first connecting piece is connected with the second step portion, and the bending portion of the second connecting piece is connected with the first step portion.

5. The cartridge housing of claim 4, wherein the first connector, first step, and the first housing body are one piece; the second connecting piece, the second step part and the second shell body are integrated.

6. The cartridge housing according to claim 2, wherein a first bending portion and a second bending portion extend from two ends of the connecting member body of the connecting member, respectively, and the first bending portion and the connecting member body form a first pressing structure abutting against the inner and outer wall surfaces of the first step portion, respectively; the second bending part and the connecting piece body form a second compression structure which is respectively abutted against the inner wall surface and the outer wall surface of the second step part; the first case portion has at least a pair of first step portions at both ends in the circumferential direction thereof, and the second case portion has at least a pair of second step portions corresponding to the pair of first step portions at both ends in the circumferential direction thereof.

7. The cartridge housing of claim 1, wherein at least one of the first housing portion and the second housing portion further comprises a first extending stop, a second extending stop extending radially from the housing body, axially adjacent thereto; the first extending blocking part and the second extending blocking part axially block the first reinforcing ring and the second reinforcing ring respectively.

8. The cartridge housing of claim 1, wherein at least one of the bend and the connector body is in pressure connection with the step.

9. A heat shield comprising the cartridge housing of any one of claims 1 to 8 and a heat insulating material.

10. An exhaust system comprising a cartridge housing according to any one of claims 1 to 8, the cartridge housing providing a first space therein, the first space having disposed therein one or more of a diesel oxidation catalyst, a diesel particulate trap, a selective catalytic reduction catalyst.

11. The utility model provides a connecting piece for first shell portion and the second shell portion of connecting barrel shell, its characterized in that, include the connecting piece body and extend respectively in first kink and the second kink at connecting piece body both ends, first kink perpendicular to the connecting piece body, the second kink with the connecting piece body is an inclination, the length L of connecting piece body is greater than the sum of length H1 of the first step portion of first shell portion and the length H2 of the second step portion of second shell portion, the length of first kink is less than half of the length H1 of first step portion subtracts the thickness T of barrel shell, the length of second kink is less than half of the length H2 of second step portion subtracts the thickness T of barrel shell.

12. The utility model provides a frock for a plurality of shell portion pressure with connecting piece and barrel casing is connected, its characterized in that includes:

a first fixing part for supporting the step part of the connector and the shell part of the cylinder shell and fixing the first part of the connector on one side of the step part;

the first pressure part is provided with a first pressure surface which can be contacted with the connecting piece so as to apply first pressure to bend the second part of the connecting piece;

the second pressure part is provided with a second pressure surface which can be contacted with the bent second part so as to apply second pressure, so that the bent part of the connecting piece, the connecting piece body and the step part form a compression structure.

13. The tool according to claim 12, wherein the first pressure surface comprises a first pressure inclined surface and a second pressure inclined surface, and the extending direction of the first pressure inclined surface is intersected with the extending direction of the second pressure inclined surface; the first pressure part can move in a first direction to apply pressure to the connecting piece to form a bent part of the connecting piece; the second pressure part can move in a second direction, so that the second pressure surface is in contact with the bent second part to apply second pressure; wherein the first direction is parallel to a height direction of the stepped portion, and the second direction is perpendicular to the first direction.

14. The tooling of claim 12, wherein two ends of the first pressure part are respectively connected with the first fixing part and the second pressure part, the first pressure part can rotate around a first pivot, and the position of the first pivot is relatively fixed to the first fixing part; the second pressure part comprises a body and a pressure piece, the pressure piece is provided with the second pressure surface, the body can move along the second plane of the first pressure part, the pressure piece can rotate around a second pivot, and the position of the second pivot is relatively fixed on the body.