Foot brake valve of an air brake system

Patent metadata

Field	Value
Publication number	US-11964646-B2
Application number	US-201917287131-A
Country	US
Kind code	B2
Filing date	Oct 17, 2019
Priority date	Nov 8, 2018
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A foot brake valve ( 2 ′) of a pneumatic brake system in a motor vehicle has an installation plate ( 4 ′), on which a brake pedal ( 14 ) is pivotably mounted and to which a housing ( 18 ′) of a control unit ( 16, 26 ) is fastened. A spring-loaded plunger piston ( 36 ) in actuating contact with the brake pedal ( 14 ) is guided axially movably in an annular collar ( 50 ) projecting upward out of the installation plate ( 4 ′). For fastening the housing ( 18 ′) of the control unit ( 16, 26 ) to the installation plate ( 4 ′), the housing ( 18 ′) has an intermediate flange ( 48 ) which is screw-connected to the main part of the housing ( 18 ′) and has the annular collar ( 50 ). The intermediate flange ( 48 ) is coaxially rotatably about a vertical central axis ( 32 ), and is connectable in non-positively locking fashion to the installation plate ( 4 ′) via a releasable clamping connection ( 62 ).

First claim

The invention claimed is:

1. A foot brake valve ( 2 ′) of a pneumatic brake system in a motor vehicle, the foot brake valve comprising:
an installation plate ( 4 ′, 4 ″), on which a brake pedal ( 14 ) is pivotably mounted and to which a housing ( 18 ′, 18 ″; 28 ) of a control unit ( 16 , 26 ) is fastened,
a spring-loaded plunger piston ( 36 ) in an actuating contact with the brake pedal ( 14 ) and guided axially movably in a first annular collar ( 50 , 72 ), which projects upward out of the installation plate ( 4 ′, 4 ″),
wherein the housing ( 18 ′, 18 ″) of the control unit ( 16 ) arranged directly beneath the installation plate ( 4 ′, 4 ″) has an intermediate flange ( 48 , 70 ) which is screw-connected to the main part of the housing ( 18 ′, 18 ″) and which has the first annular collar ( 50 , 72 ), and wherein the intermediate flange ( 48 , 70 ) is, with the first annular collar ( 50 , 72 ), guided in a passage opening ( 40 , 40 ′) of the installation plate ( 4 ′, 4 ″) coaxially rotatably about a vertical central axis ( 32 ), and is connectable in a non-positively locking fashion to the installation plate ( 4 ′, 4 ″) via a releasable clamping connection ( 62 , 76 , 77 );
wherein the clamping connection ( 62 ) is formed by an outer annular groove ( 52 ) with a radially inward groove bottom and an upper side wall in the first annular collar ( 50 ) of the intermediate flange ( 48 ) and by two clamping plates ( 64 , 64 ′) arranged at the first annular collar ( 50 ) diagonally opposite from each other on the installation plate ( 4 ′) and engaging the annular groove ( 52 ),
wherein each of the clamping plates ( 64 , 64 ′) is screw-connected to the installation plate ( 4 ′) and is angled upward in cross section in a radially inward direction with an axially elevated inner edge ( 68 ) and a circular-arc-shaped inner end wall ( 66 ), wherein, in an installed state, the circular-arc-shaped inner end wall of each of the clamping plates ( 64 , 64 ′) bears ( 66 ) against the groove bottom ( 54 ) of the annular groove ( 52 ) and the axially elevated inner edge ( 68 ) bears against the upper side wall ( 56 ) of the annular groove ( 52 ).

2. The foot brake valve ( 2 ′) as claimed in claim 1 , wherein the inner end wall ( 66 ) of the clamping plates ( 64 , 64 ′) and the groove bottom ( 54 ) of the annular groove ( 52 ) of the first annular collar ( 50 ) are both smooth.

3. The foot brake valve ( 2 ′) as claimed in claim 1 , wherein the inner end wall ( 66 ) of the clamping plates ( 64 , 64 ′) and the groove bottom ( 54 ) of the annular groove ( 52 ) of the first annular collar ( 50 ) are both circumferentially toothed.

4. The foot brake valve ( 2 ′) as claimed in claim 3 , wherein both the inner end wall ( 66 ) of the clamping plates ( 64 , 64 ′) and the groove bottom ( 54 ) of the annular groove ( 52 ) of the first annular collar ( 50 ) have a circumferential serration.

5. A foot brake valve ( 2 ″) of a pneumatic brake system in a motor vehicle, the foot brake valve comprising:
an installation plate ( 4 ′, 4 ″), on which a brake pedal ( 14 ) is pivotably mounted and to which a housing ( 18 ′, 18 ″; 28 ) of a control unit ( 16 , 26 ) is fastened,
a spring-loaded plunger piston ( 36 ) in an actuating contact with the brake pedal ( 14 ) and guided axially movably in a first annular collar ( 50 , 72 ), which projects upward out of the installation plate ( 4 ′, 4 ″),
wherein the housing ( 18 ′, 18 ″) of the control unit ( 16 ) arranged directly beneath the installation plate ( 4 ′, 4 ″) has an intermediate flange ( 48 , 70 ) which is screw-connected to the main part of the housing ( 18 ′, 18 ″) and which has the first annular collar ( 50 , 72 ), and wherein the intermediate flange ( 48 , 70 ) is, with the first annular collar ( 50 , 72 ), guided in a passage opening ( 40 , 40 ′) of the installation plate ( 4 ′, 4 ″) coaxially rotatably about a vertical central axis ( 32 ), and is connectable in a non-positively locking fashion to the installation plate ( 4 ′, 4 ″) via a releasable clamping connection ( 62 , 76 , 77 );
wherein the clamping connection ( 76 ) is formed by a clamping screw connection ( 78 ) which comprises the following:
a second annular collar ( 42 ) on the top side of the installation plate ( 4 ″) with a cylindrical inner wall ( 46 ),
a clamping ring ( 80 ) with a cylindrical outer wall ( 82 ) and with a conical, axially downwardly narrowing inner wall ( 84 ), and a conical outer wall ( 74 ) on the first annular collar ( 72 ) of the intermediate flange ( 70 ), and
a sleeve nut ( 86 ) with an internal thread ( 88 ), wherein the clamping ring ( 80 ) is, in an installed state, arranged between the cylindrical inner wall ( 46 ) of the second annular collar ( 42 ) of the installation plate ( 4 ″) and the conical outer wall ( 74 ) of the first annular collar ( 72 ) of the intermediate flange ( 70 ), and wherein radial bracing of the first and second annular collars ( 42 , 72 ) is caused by the clamping ring ( 80 ) as a result of the screw connection of the sleeve nut ( 86 ) to the second annular collar ( 42 ) of the installation plate ( 4 ″).

6. The foot brake valve ( 2 ″) as claimed in claim 5 , wherein the cylindrical inner wall ( 46 ) of the second annular collar ( 42 ) of the installation plate ( 4 ″), the conical inner wall ( 84 ) and the cylindrical outer wall ( 82 ) of the clamping ring ( 80 ), and the conical outer wall ( 74 ) of the first annular collar ( 72 ) of the intermediate flange ( 70 ) are each of smooth form.

7. The foot brake valve ( 2 ″) as claimed in claim 6 , wherein the clamping ring ( 80 ) is axially slotted or is composed of multiple ring segments.

8. The foot brake valve ( 2 ″) as claimed in claim 5 , wherein the cylindrical inner wall ( 46 ) of the second annular collar ( 42 ) of the installation plate ( 4 ″), the conical inner wall ( 84 ) and the cylindrical outer wall ( 82 ) of the clamping ring ( 80 ) and the conical outer wall ( 74 ) of the first annular collar ( 72 ) of the intermediate flange ( 70 ) are each of circumferentially toothed form.

9. The foot brake valve ( 2 ″) as claimed in claim 8 , wherein the cylindrical inner wall ( 46 ) of the second annular collar ( 42 ) of the installation plate ( 4 ″), the conical inner wall ( 84 ) and the cylindrical outer wall ( 82 ) of the clamping ring ( 80 ) and the conical outer wall ( 74 ) of the first annular collar ( 72 ) of the intermediate flange ( 70 ) are each provided with a circumferential serration.

10. The foot brake valve ( 2 ″) as claimed in claim 9 , wherein the clamping ring ( 80 ) is axially slotted or is composed of multiple ring segments.

11. The foot brake valve ( 2 ″) as claimed in claim 8 , wherein the clamping ring ( 80 ) is axially slotted or is composed of multiple ring segments.

12. The foot brake valve ( 2 ″) as claimed in claim 5 , wherein the clamping ring ( 80 ) is axially slotted or is composed of multiple ring segments.

13. A foot brake valve ( 2 ′″) of a pneumatic brake system in a motor vehicle, the foot brake valve comprising:
an installation plate ( 4 ′, 4 ″), on which a brake pedal ( 14 ) is pivotably mounted and to which a housing ( 18 ′, 18 ″; 28 ) of a control unit ( 16 , 26 ) is fastened,
a spring-loaded plunger piston ( 36 ) in an actuating contact with the brake pedal ( 14 ) and guided axially movably in a first annular collar ( 50 , 72 ), which projects upward out of the installation plate ( 4 ′, 4 ″),
wherein the housing ( 18 ′, 18 ″) of the control unit ( 16 ) arranged directly beneath the installation plate ( 4 ′, 4 ″) has an intermediate flange ( 48 , 70 ) which is screw-connected to the main par

Assignees

• Zf Cv Systems Hannover Gmbh
• Zf Cv Systems Europe Bv

Inventors

• Beier Peter
• Couppee Ulrich
• Hölscher Reiner
• Martini Gerhard
• Riediger-Janisch Karl-Heinz
• Bindseil Olaf
• Elze Petra
• Fabian Alexander
• Glondajewski Gerrit
• Homann Sven
• Hörstmann Jan
• Müller Thomas

Classifications

• B60T15/043 Primary

  controlling service pressure brakes (B60T15/048 takes precedence) · CPC title

• B60T7/06

  Disposition of pedal · CPC title