Threaded connection piece

• US 8,162,582 B2
• Filed: 03/12/2009
• Issued: 04/24/2012
• Est. Priority Date: 04/30/2008
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Stoll, Oliver, Roesser, Christian, Ledermann, Markus, Engelhardt, Joerg
• Primary Examiner(s): ESTREMSKY, GARY WAYNE
• Application Number:
  US12/736,640
• Publication Number:
  US 20110123261A1
• Time in Patent Office: 1,139 Days
• Field of Search: 411/369, 411/392, 411/424, 285/4, 285/80, 285/107, 285/332, 285/332.1, 285/285, 285/343, 374/208, 737/56
• US Class Current: 411/369
• CPC Class Codes: F16B 2200/60 Coupler sealing means
• CPC Class Codes: G01D 11/245 Housings for sensors

Abstract

A threaded connection piece, e.g., a connection piece of a sensor, includes a cylindrical base body that is able to be at least partially introduced into an accommodating opening, which is provided, at least over a part of its longitudinal extension, with a threaded section and, at its end face, with a sealing surface. In order to improve the sealing properties of the threaded connection piece when it is screwed into the accommodating opening, the cylindrical base body is developed to be elastic between the threaded section and the sealing surface.

Claims

1. A threaded connection piece for a sensor, the connection piece configured to be screwed into an accommodating opening, comprising:

a cylindrical base body configured to be at least partially introduced into the accommodating opening, wherein the cylindrical base body has;

(i) a threaded section over at least a part of the longitudinal extension of the cylindrical base body, and (ii) a sealing surface at one end face, and wherein the cylindrical base body is configured to be elastic between the threaded section and the sealing surface;

wherein the cylindrical base body is configured to be elastic between the threaded section and the sealing surface by a reduction in the wall thickness of the cylindrical base body;

wherein at least one material channel is provided in an outer jacket of the base body for the reduction in the wall thickness;

wherein an encircling groove forming the at least one material channel is provided at the outer jacket of the cylindrical base body, between the threaded section and the sealing surface;

wherein the encircling groove has an annular area expanse in a plane extending perpendicular to the longitudinal axis of the base body and through the groove base of the groove, between the groove base and the outer jacket of the base body, wherein the ratio of the annular area expanse to the cross sectional area of the base body in the plane extending perpendicular to the longitudinal axis being greater than 0.05 and less than 0.8.

2. The threaded connection piece as recited in claim 1, wherein multiple material channels in the form of recesses distributed over the circumference are provided at the outer jacket of the cylindrical base body, between the threaded section and the sealing surface.

3. The threaded connection piece as recited in claim 1, wherein the sealing surface is formed by a sealing cone.

4. The threaded connection piece as recited in claim 1, wherein the threaded connection piece is a component of at least one of a pressure sensor and a temperature sensor.

5. A threaded connection piece for a sensor, the connection piece configured to be screwed into an accommodating opening, comprising:

a cylindrical base body configured to be at least partially introduced into the accommodating opening, wherein the cylindrical base body has;

(i) a threaded section over at least a part of the longitudinal extension of the cylindrical base body, and (ii) a sealing surface at one end face, and wherein the cylindrical base body is configured to be elastic between the threaded section and the sealing surface;

wherein the cylindrical base body is configured to be elastic between the threaded section and the sealing surface by a reduction in the wall thickness of the cylindrical base body;

wherein at least one material channel is provided in an outer jacket of the base body for the reduction in the wall thickness;

wherein an encircling groove forming the at least one material channel is provided at the outer jacket of the cylindrical base body, between the threaded section and the sealing surface;

wherein two groove edges bordering on the encircling groove on the outer jacket of the base body are at a first distance from each other, wherein the first distance forms a ratio to a second distance of the sealing seat from the threaded section, the ratio being greater than 0.05.

6. The threaded connection piece as recited in claim 5, wherein multiple material channels in the form of recesses distributed over the circumference are provided at the outer jacket of the cylindrical base body, between the threaded section and the sealing surface.

7. The threaded connection piece as recited in claim 5, wherein the sealing surface is formed by a sealing cone.

8. The threaded connection piece as recited in claim 5, wherein the threaded connection piece is a component of at least one of a pressure sensor and a temperature sensor.