Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Reexamination Certificate
2001-06-13
2004-03-09
Graham, Matthew C. (Department: 3613)
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
C303S119300, C303SDIG001
Reexamination Certificate
active
06702403
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an automotive anti-lock braking system and, more particularly, to a an integrated coil assembly for use with the automotive anti-lock braking system.
BACKGROUND OF THE INVENTION
A conventional anti-lock braking system integrates an electronic control assembly with the braking system's motor connector and main hydraulic control connector. The conventional main hydraulic control connector includes a solenoid coil assembly press-fit onto valve stems of a hydromechanical block. This assembly is, in turn, interconnected to a main circuit board via a lead frame. The motor connector is also connected to the main circuit board.
The main connector may be interconnected to the main circuit board through a bore in the hydromechanical block in order that the circuit board not be heated by the solenoid coil assembly of the main connector. An electronic control assembly that facilitates assembly while meeting all of the requirements of a conventional anti-lock braking system would beneficially reduce assembly time and efficiency for the anti-lock braking system.
SUMMARY OF THE INVENTION
In accordance with one feature of the present invention, an assembly is used with an anti-lock braking system. The assembly includes a circuit board, a motor, a hydromechanical block, a lead frame, and a plurality of solenoid coils. The circuit board integrates the electronics of the anti-lock braking system. The motor provides pressurized fluid to the anti-lock braking system. The motor is connected to the circuit board. The hydromechanical block has a through bore. The lead frame has a built-in connector extending through the through bore to the circuit board. The plurality of solenoid coils controls flow of the pressurized fluid through the hydromechanical block. Each of the plurality of solenoid coils is connected to the lead frame such that the plurality of solenoid coils is electrically connected to the circuit board by the built-in connector of the lead frame.
In accordance with another feature of the present invention, an assembly is used with an anti-lock braking system. The assembly includes a circuit board, a motor, a hydromechanical block, a lead frame, and a plurality of solenoid coils. The circuit board integrates the electronics of the anti-lock braking system. The motor provides pressurized fluid to the anti-lock braking system. The motor is connected to the circuit board. The hydromechanical block has a through bore. The lead frame has a built-in, integral connector extending through the through bore to the circuit board. The plurality of solenoid coils controls flow of the pressurized fluid through the hydromechanical block. Each of the plurality of solenoid coils is electrically connected to the circuit board by the built-in connector of the lead frame. The plurality of solenoid coils is mechanically connected to a corresponding plurality of valves in the hydromechanical block.
In accordance with still another feature of the present invention, an assembly is used with an anti-lock braking system. The assembly includes circuit board means, motor means, hydromechanical means, lead frame means, and a plurality of coil means. The motor means provides pressurized fluid to the anti-lock braking system. The motor means is connected to the circuit board. The hydromechanical means has a through bore. The lead frame means has a built-in connector means extending through the through bore to the circuit board means. The plurality of coil means controls flow of the pressurized fluid through the hydromechanical means. Each of the plurality of coil means is connected to the lead frame means such that the plurality of coil means is electrically connected to the circuit board means by the built-in connector means of the lead frame means.
In accordance with yet another feature of the present invention, a method is used to assemble an anti-lock braking system. The method includes the following steps: securing a plurality of solenoid coils to a lead frame such that the plurality of solenoid coils are electrically connected to the lead frame; mechanically securing the plurality of solenoid coils to a corresponding plurality of valves in a hydromechanical block; inserting a connector built-in to the lead frame through a bore in the hydromechanical block such that the plurality of solenoid coils is electrically connected to a circuit board; and connecting a motor for the anti-lock braking system to the circuit board.
In accordance with still yet another feature of the present invention, a method is used to electrically control an anti-lock braking system. The method includes the following steps: utilizing a plurality of solenoid coils for actuating a corresponding plurality of hydraulic valves located in a hydromechanical block; transferring control information from a circuit board through a through bore in the hydromechanical block to a lead frame and the plurality of solenoid coils; and communicating control information from the circuit board to a motor for driving a pump such that pressurized hydraulic fluid is provided to the hydromechanical block. The transferring step includes a step of transferring control information between the circuit board and the lead frame through a connector built-in to the lead frame.
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Graham Matthew C.
Tarolli, Sundheim Covell & Tummino L.L.P.
TRW Inc.
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