Pump housing of a motor vehicle hydraulic unit with at least one main cylinder connection opening

Patent metadata

Field	Value
Publication number	US-10184468-B2
Application number	US-201013384328-A
Country	US
Kind code	B2
Filing date	May 26, 2010
Priority date	Jul 20, 2009
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A pump housing of a motor vehicle hydraulic unit is disclosed. The pump housing has at least one side surface, at least one main cylinder connection opening, at least one pump element opening and a connecting line which connects the at least one main cylinder connection opening to the at least one pump element opening. The pump housing is designed as a blind bore into the pump housing, and the blind bore of the connecting line extends from the at least one side surface initially through the at least one pump element opening and subsequently into the at least one main cylinder connection opening.

First claim

The invention claimed is:

1. A pump housing of a motor vehicle hydraulic unit comprising:
at least one side face;
at least one main cylinder connection opening configured to connect to a main cylinder;
at least one pump element opening configured to receive a pump element; and
a connecting line which connects the at least one main cylinder connection opening to the at least one pump element opening,
wherein the connecting line is configured as a pocket bore leading into the pump housing, and the pocket bore starts from the at least one side face, extends initially through the at least one pump element opening, and subsequently extends into the at least one main cylinder connection opening, and
wherein the connecting line includes a first portion extending from the at least one side face to the at least one pump element opening and a second portion extending from the at least one pump element opening into the at least one main cylinder connection opening, and the first portion and the second portion are coaxial with respect to one another.

2. The pump housing as claimed in claim 1 , wherein the pocket bore is configured as a stepped bore including at least one step, and a staked ball feature which closes the connecting line in a fluid tight manner, is formed at the at least one step.

3. The pump housing as claimed in claim 2 , wherein:
at least one accumulator opening is formed at the at least one side face,
the connecting line defines a longitudinal direction, and
the staked ball feature is formed between the at least one accumulator opening configured to receive an accumulator and the at least one pump element opening in the longitudinal direction of the connecting line.

4. The pump housing as claimed in claim 1 , wherein:
the at least one pump element opening is of circular cylindrical configuration,
the connecting line is formed tangentially through the at least one pump element opening at an intersection, and
the intersection between the connecting line and the at least one pump element opening is configured with an undercut in the at least one pump element opening.

5. The pump housing as claimed in claim 1 , further comprising:
a front face,
wherein the at least one pump element opening is defined in a first side face of the at least one side face; and
wherein the at least one main cylinder connection opening is defined in the front face.

6. A method for producing a pump housing of a motor vehicle hydraulic unit, comprising:
forming at least one side face,
forming at least one main cylinder connection opening configured to connect to a main cylinder,
forming at least one pump element opening configured to receive a pump element, and
forming a connecting line connecting the at least one main cylinder connection opening to the at least one pump element opening, wherein the connecting line is formed by boring from the at least one side face, through the at least one pump element opening, and into the at least one main cylinder connection opening.

7. The method as claimed in claim 6 , wherein forming the connecting line further includes:
forming a stepped bore including a step, and
forming a staked ball feature, wherein the staked ball feature is configured to close the connecting line in a fluid tight manner and is formed at the step of the stepped bore.

8. The method as claimed in claim 7 , further comprising:
forming at least one accumulator opening at the at least one side face, wherein:
forming the connecting line includes defining a longitudinal direction, and
forming the staked ball feature includes forming the staked ball feature between the at least one accumulator opening, which is configured to receive an accumulator, and the at least one pump element opening in the longitudinal direction of the connecting line.

9. The method as claimed in claim 6 , wherein:
forming the at least one pump element opening includes configuring the at least one pump element opening as a circular cylinder, and
forming the connecting line includes forming the connecting line tangentially through the at least one pump element opening at an intersection, and configuring the intersection with an undercut in the at least one pump element opening.

10. The method as claimed in claim 6 , wherein forming the connecting line includes:
forming a first portion extending from the at least one side face to the at least one pump element opening; and
forming a second portion coaxial with respect to the first portion extending from the at least one pump element opening into the at least one main cylinder connection opening.

11. The method as claimed in claim 6 , wherein:
forming the at least one pump element opening includes forming the at least one pump element opening in a first side face of the at least one side face; and
forming the at least one main cylinder connection opening includes forming the at least one main cylinder connection opening in a front face of the pump housing.

Assignees

• Mayr Matthias
• Bareiss Alexander
• Weh Andreas
• Bosch Gmbh Robert

Inventors

• Mayr Matthias
• Bareiss Alexander
• Weh Andreas

Classifications

• F04B1/0538

  located side-by-side · CPC title

• B60T8/368 Primary

  combined with other mechanical components, e.g. pump units, master cylinders · CPC title

• F04B39/121

  Casings · CPC title

• B60T8/4031

  Pump units characterised by their construction or mounting (pump units in combination with valve blocks B60T8/36) · CPC title

• F04B39/14

  Provisions for readily assembling or disassembling · CPC title