Assembly

Patent metadata

Field	Value
Publication number	US-9709181-B2
Application number	US-201314385385-A
Country	US
Kind code	B2
Filing date	Feb 18, 2013
Priority date	Mar 16, 2012
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An assembly includes: a first component; a second component enclosed by the first component; a diaphragm that covers a radial gap between the first and second components and is fixed in each case in a sealed manner; and a volume of a medium that is enclosed by the first and second components and the diaphragm. For the purpose of achieving a simple filling process of the assembly with the medium at a reliable sealing of the enclosed volume, even in the case of high, swelling pressures acting upon the assembly, in one of the components a filling valve is situated that opens towards the volume, which filling valve is situated as a check valve having spring resetting in a filling channel running in the component.

First claim

What is claimed is:

1. An assembly comprising: a first component; a second component enclosed by the first component; a diaphragm which covers a radial gap between the first and second components and is fixed in a sealing manner on the first and second components; and a volume of a medium enclosed by the first and second components and the diaphragm; wherein a filling valve for inserting the medium is situated in one of the first and second components, wherein the filling valve is situated in a filling channel running in one of the first and second components, the filling channel beginning on an outer side of the one of the first and second components, and wherein the filling valve is configured as a check valve having a spring resetting.

2. The assembly as recited in claim 1 , wherein the filling channel is configured as a stepped borehole having a first boring section and a second boring section having a larger diameter, and at the transition from the first to the second boring section there is a valve seat for a valve member.

3. The assembly as recited in claim 2 , wherein the stepped borehole has a third boring section following the second boring section which is situated, having a larger diameter compared to the diameter of the second boring section, eccentrically to the boring axis; and in the third boring section a spring arm is fixed that stresses the valve member.

4. The assembly as recited in claim 3 , wherein the spring arm is cut free as a part of a shell-shaped spring element having a shell bottom and a shell edge from shell bottom; and the spring element with the shell edge is set undisplaceably into the third boring section.

5. The assembly as recited in claim 4 , wherein the spring element ( 22 ) is a stamped and bent part made of high-strength spring steel.

6. The assembly as recited in claim 2 , wherein the valve member is a steel ball coated with PTFE.

7. The assembly as recited in claim 6 , wherein the valve seat has an angle of slope a with respect to the boring axis of between 5° and 60°.

8. The assembly as recited in claim 1 , wherein the assembly is positioned in a valve housing of a valve for metering fluid.

9. The assembly as recited in claim 8 , wherein the first component forms a valve body closing a valve chamber in the valve housing and the second component forms a valve needle guided slidingly in the valve body for controlling a metering opening connected downstream of the valve chamber; and the filling channel which includes the filling valve is situated in the valve body and the enclosed volume is in a covering region covered by the diaphragm on the valve body.

10. The assembly as recited in claim 9 , wherein the medium is a soft substance having a high yield stress, including one of a Bingham fluid, a kneadable material, an elastomer, a viscous silicone oil and a transformer oil.

11. The assembly as recited in claim 8 , wherein in a hydraulic coupler integrated into the valve housing, the first component forms a pot-shaped coupling housing having a pot bottom and a pot jacket and the second component forms a coupling member, that is able to be acted upon by a force transmission element, having a piston guided slidingly in the coupling housing and a coupling bolt, firmly connected to the piston, for connecting the force transmission element; the piston together with the pot jacket of the coupling housing borders on the radial gap and with the pot bottom of the coupling housing it borders on a coupling gap; and the filling channel including the filling valve is situated in the coupling member and the enclosed volume is distributed via the radial gap to a covering region covered by the diaphragm at coupling housing and coupling member and to coupling gap.

12. The assembly as recited in claim 11 , wherein the fixing on the coupling member side of the diaphragm is done on the coupling bolt; the coupling bolt is fastened in a central recess held in reserve in piston and with the base of the recess borders on a hollow space that is in connection with the covering region of the diaphragm; and the filling channel including the filling valve runs in the coupling bolt and opens out into the hollow space and the enclosed volume extends into the hollow space.

13. The assembly as recited in claim 11 , wherein the medium is an hydraulic oil.

14. An assembly comprising: a first component; a second component enclosed by the first component; a diaphragm which covers a radial gap between the first and second components and is fixed in a sealing manner on the first and second components; and a volume of a medium enclosed by the first and second components and the diaphragm; wherein a filling valve for inserting the medium is situated in one of the first and second components, wherein the filling valve is situated in a filling channel running in the one of the first and second components, the filling channel beginning on an outer side of the one of the first and second components, and wherein the filling valve is configured as a check valve having a spring resetting, wherein the filling valve is situated in a filling channel extending in the one of the first and second components, wherein the filling channel is configured as a stepped hole having a first boring section having a first diameter and a second boring section having a second diameter larger than the first diameter, and at the transition from the first to the second boring section, a valve seat for a valve member is provided, and wherein: the stepped hole has a boring axis; the stepped hole has a third boring section following the second boring section, the third boring section having a third diameter larger than the second diameter of the second boring section; the third boring section is situated eccentrically to the boring axis; and a spring arm is fixed in the third boring section, the spring arm stressing the valve member.

15. The assembly as recited in claim 14 , wherein:
the spring arm is cut free as a part of a shell-shaped spring element having a shell bottom and a shell edge from shell bottom; and
the spring element with the shell edge is set undisplaceably into the third boring section.

16. The assembly as recited in claim 15 , wherein the spring element is a stamped-and-bent element made of high strength spring steel.

17. The assembly as recited in claim 15 , wherein the valve member is a steel ball coated with PTFE.

18. The assembly as recited in claim 17 , wherein the valve seat has an angle of slope with respect to the boring axis of between 5° and 60°.

19. The assembly as recited in claim 15 , wherein the assembly is positioned in a valve housing of a valve for metering fluid.

20. The assembly as recited in claim 19 , wherein:
the first component forms a valve body closing a valve chamber in the valve housing;
the second component forms a valve needle guided slidingly in the valve body for controlling a metering opening connected downstream of the valve chamber;
the filling channel which includes the filling valve is situated in the valve body; and
the enclosed volume is concentrated in a covering region covered by the diaphragm on the valve body.

21. The assembly as recited in claim 20 , wherein the medium is one of a Bingham fluid, a kneadable material, an elastomer, a viscous silicone oil or transformer oil.

22. The assembly as recited in claim 19 , wherein:
in a hydraulic coupler integrated into the valve housing, the first component forms a pot-shaped coupling housing having a pot bottom and a p

Assignees

• Bosch Gmbh Robert

Inventors

• Kraus Juergen
• Schmieder Dietmar
• Landenfeld Tilo
• Ebert Juergen

Classifications

• F02M2200/21

  Fuel-injection apparatus with piezoelectric or magnetostrictive elements · CPC title

• F02M2200/26

  Fuel-injection apparatus with elastically deformable elements other than coil springs · CPC title

• F02M61/08

  the valves opening in direction of fuel flow {(F02M61/047 takes precedence)} · CPC title

• B05B17/0623

  coupled with a vibrating horn · CPC title

• F02M2200/16

  Sealing of fuel injection apparatus not otherwise provided for · CPC title