Connecting arrangement

Patent metadata

Field	Value
Publication number	US-12074416-B2
Application number	US-202217849375-A
Country	US
Kind code	B2
Filing date	Jun 24, 2022
Priority date	Jun 25, 2021
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

A connecting arrangement electrically connects a heating conductor to an electrical connection line. The heating conductor includes a heating conduction element having an exposed end segment defining a first connecting region and the electrical connection line includes a connection line conductor having an exposed end segment defining a second connecting region. A connector mutually electrically connects the exposed end segments. A shielding sleeve surrounds the first connecting region, the second connecting region and the connector. The shielding sleeve has first and second sleeve end portions and the shielding sleeve is connected to the heating conductor in the first connecting region and is connected to the electrical connection line in the second connecting region and so shields the exposed end segment of the heating conduction element and the exposed end segment of the connection line conductor and the connector against external influences.

First claim

What is claimed is:

1. An exhaust gas heating arrangement for an exhaust gas system of an internal combustion engine, the exhaust gas system including a guide for conducting a flow of exhaust gas therethrough and said guide defining a wall bounding the flow of the exhaust gas, the exhaust gas heating arrangement comprising:
a heating conductor element arranged in said flow of exhaust gas in said guide;
at least one bushing arrangement in said wall;
said heating conductor element being guided through said wall in the region of said bushing;
an electrical connection line disposed outside of said guide;
a connecting arrangement for connecting said heating conductor element to said electrical connection line externally of said guide;
said connecting arrangement including:
said heating conductor element including a heating conductor element conductor element having an exposed end segment defining a first connecting region;
said electrical connection line including a connection line conductor having an exposed end segment defining a second connecting region;
a connector electrically connected to said exposed end segment of said heating conductor element conductor element and electrically connected to said exposed end segment of said connection line conductor so as to connect said exposed end segments to each other;
a shielding sleeve surrounding said first connecting region, said second connecting region and said connector;
said shielding sleeve having first and second sleeve end portions; and,
said shielding sleeve being connected to said heating conductor element in said first connecting region in said first sleeve end portion and being connected to said electrical connection line in said second connecting region in said second sleeve end portion and so shielding said exposed end segment of said heating conductor element conductor element and said exposed end segment of said connection line conductor and said connector against external influences,
wherein said heating conductor element further includes a sheath made of metal material and surrounding said heating conductor element conductor element in said first connecting region with the interposition of electrically insulating material,
wherein said shielding sleeve is connected to said sheath in said first sleeve end portion by material cohesion.

2. The exhaust gas heating arrangement of claim 1 , wherein at least one of the following applies:
a) said heating conductor element conductor element is configured as a solid conductor body at least with respect to said exposed end segment thereof; and,
b) said connection line conductor is configured as a plurality of wire strands at least with respect to said exposed end segment thereof.

3. The exhaust gas heating arrangement of claim 1 , wherein said connector is configured so as to cause at least one of the following to apply:
a) said connector has a first opening for receiving said exposed end segment of said heating conductor element conductor element therein; and,
b) said connector has a second opening for receiving said exposed end segment of said connection line conductor therein.

4. The exhaust gas heating arrangement of claim 3 , wherein said exposed end segment of said connection line conductor is fixedly held in said second opening of said connector via at least one of the following:
a) non-positive locking;
b) positive locking produced by deformation of said connector in the region of said second opening thereof; and,
c) material cohesion.

5. The exhaust gas heating arrangement of claim 4 , wherein said exposed end segment of said heating conductor element conductor element is fixedly held in said first opening of said connector via at least one of the following:
a) non-positive locking produced by pressing said exposed end segment of said heating conduction element into said first opening;
b) non-positive locking;
c) positive locking produced by deformation of said connector in the region of said first opening thereof; and,
d) material cohesion.

6. The exhaust gas heating arrangement of claim 3 , wherein said connector is a slotted connector at least in the region of said first opening.

7. The exhaust gas heating arrangement of claim 3 , wherein said connector is configured to be tubular and has first and second receiving portions for receiving corresponding ones of said exposed end segments of said heating conductor element conductor element and said conduction line conductor, respectively; said connector further includes a push-in stop mutually separating said first and second receiving portions; and, said first and second receiving portions define corresponding ones of said first and second openings.

8. The exhaust gas heating arrangement of claim 7 , wherein said push-in stop is defined by a deformation of said connector.

9. The exhaust gas heating arrangement of claim 1 , wherein said shielding sleeve is connected to said sheath in said first sleeve end portion by
soldering or welding.

10. The exhaust gas heating arrangement of claim 1 , further comprising at least one sealing element surrounding said electrical connection line and said at least one sealing element being surrounded by said shielding sleeve in said second sleeve end portion thereof.

11. The exhaust gas heating arrangement of claim 10 , wherein at least one of the following:
a) said at least one sealing element is held pressed between said shielding sleeve and said electrical connection line by
deformation of said shielding sleeve in said second sleeve end portion;
b) said at least one sealing element is of annular configuration;
c) said at least one sealing element is configured of elastic material; and,
d) said at least one sealing element is configured of rubber material.

12. An exhaust gas system for an internal combustion engine, the exhaust gas system comprising:
a guide for conducting a flow of exhaust gas therethrough and said guide defining a wall bounding the flow of the exhaust gas;
a heating arrangement;
a heating conductor element arranged in said flow of exhaust gas in said guide;
at least one bushing arrangement in said wall;
said heating conductor element being guided through said wall in the region of said bushing;
an electrical connection line disposed outside of said guide;
a connecting arrangement for connecting said heating conductor element to said electrical connection line externally of said guide;
said connecting arrangement including:
said heating conductor element including a heating conductor element conductor element having an exposed end segment defining a first connecting region;
said electrical connection line including a connection line conductor having an exposed end segment defining a second connecting region;
a connector electrically connected to said exposed end segment of said heating conductor element conductor element and electrically connected to said exposed end segment of said connection line conductor so as to connect said exposed end segments to each other;
a shielding sleeve surrounding said first connecting region, said second connecting region and said connector;
said shielding sleeve having first and second sleeve end portions; and,
said shielding sleeve being connected to said heating conductor element in said first connecting region in said first sleeve end portion and being connected to said electrical connection line in said second connecting region in said second sleeve end portion and so shielding said exposed end segment of said heating conductor element conductor element and said exposed end segment of said connection line conductor and said connector against external influences,
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Assignees

• Purem GmbH

Inventors

• Brenner Holger
• Nicolai Manfred

Classifications

• H01R4/70

  Insulation of connections (end caps H01R4/22) · CPC title

• H01R4/18

  by crimping {(H01R4/01, H01R4/2495 take precedence; for coaxial cables H01R9/0518)} · CPC title

• F01N2240/16

  an electric heater, i.e. a resistance heater · CPC title

• H05B2203/022

  Heaters specially adapted for heating gaseous material · CPC title

• H05B3/04

  Waterproof or air-tight seals for heaters · CPC title