Hydraulic control device and brake control device

Patent metadata

Field	Value
Publication number	US-2019232933-A1
Application number	US-201716331101-A
Country	US
Kind code	A1
Filing date	Aug 23, 2017
Priority date	Sep 20, 2016
Publication date	Aug 1, 2019
Grant date	—

Abstract

A hydraulic control device includes: a plurality of coil assembles each including a coil bobbin, and a yoke which has a cylindrical shape, and which receives the coil bobbin; a case including a bottom wall, and receiving the coil assemblies arranged on one side of the bottom wall; a wall portion protruding from an end surface of the coil bobbin in an axial direction of the coil bobbin, within a projection surface obtained by projecting an outer shape of the yoke in the axial direction of the coil bobbin; a first engagement portion provided to the wall portion; and a second engagement portion provided to the case, and arranged to be engaged with the first engagement portion.

First claim

1 . A hydraulic control device comprising:
a plurality of coil assembles each including a coil bobbin, and a yoke which has a cylindrical shape, and which receives the coil bobbin; a case including a bottom wall, and receiving the coil assemblies arranged on one side of the bottom wall; a wall portion protruding from an end surface of the coil bobbin in an axial direction of the coil bobbin, within a projection surface obtained by projecting an outer shape of the yoke in the axial direction of the coil bobbin; a first engagement portion provided to the wall portion; and a second engagement portion provided to the case, and arranged to be engaged with the first engagement portion.

2 . The hydraulic control device as claimed in claim 1 , wherein the first engagement portion is a recessed portion or an opening portion; and the second engagement portion is a hook which includes a claw portion provided at a tip end portion of the hook, and which is arranged to be engaged with the recessed portion or the opening portion.

3 . The hydraulic control device as claimed in claim 1 , wherein the first engagement portion is a hook including a claw portion provided at a tip end of the hook; and the second engagement portion is a recessed portion or an opening portion with which the claw portion is arranged to be engaged.

4 . The hydraulic control device as claimed in claim 2 , wherein a recessed groove is provided to be continuous with the recessed portion or the opening portion; and the recessed groove is arranged to guide the claw portion.

5 . The hydraulic control device as claimed in claim 1 , wherein the wall portion is a terminal support base portion formed to protrude from a flange of one end of the coil bobbin; and the terminal support base portion supports a pair of terminals.

6 . The hydraulic control device as claimed in claim 5 , wherein the first engagement portion is provided to the terminal support base portion between a pair of the terminals.

7 . The hydraulic control device as claimed in claim 6 , wherein the bottom wall includes terminal guides each of which rises from the bottom wall, and each of which includes a terminal guide hole formed on a top surface of the each terminal guide; and the second engagement portion is formed on a side surface of each of the terminal guides.

8 . The hydraulic control device as claimed in claim 7 , wherein one of the terminal guides is disposed between two of the coil assemblies which are adjacent to each other, and which are combined in a posture in which the terminals of the two of the coil assemblies are adjacent to each other; the one of the terminal guides includes four terminal guide holes into which the terminals of the two of the coil assemblies are inserted; and each of the terminals of the coil assemblies is bent to be directed to one of the terminal guide holes.

9 . The hydraulic control device as claimed in claim 1 , wherein a plurality of pins are provided on the end surface of the coil assembly; and the pins are engaged, respectively, with positioning holes of the bottom wall.

10 . A brake control device comprising:
a hydraulic block including a fluid passage which is a part of a brake pipe; a solenoid valve which includes a valve element inserted into a valve insertion hole of the block, and a coil assembly arranged to drive the valve element, and which is arranged to control a flow rate of the fluid passage; a circuit board including an electric circuit for driving the solenoid valve; and a case receiving the coil assembly and the circuit board, the coil assembly including;
a coil bobbin around which a coil is wound,
a yoke having a cylindrical shape, and receiving the coil bobbin,
a terminal which protrudes from an end portion of the coil bobbin in an axial direction of the coil bobbin, and which is fixed and supported on the circuit board,
a wall portion protruding from an end surface of the coil bobbin in an axial direction of the coil bobbin, within a projection surface obtained by projecting an outer shape of the yoke in the axial direction of the coil bobbin, and
a first engagement portion provided to the wall portion,
the coil assembly being held in the case by an engagement between the first engagement portion and a second engagement portion provided to the case.

Assignees

• Hitachi Automotive Systems Ltd

Inventors

• Kaneko Susumu

Classifications

• H01F7/16

  Rectilinearly-movable armatures (H01F7/17 takes precedence) · CPC title

• F16B5/07

  by means of multiple interengaging protrusions on the surfaces, e.g. hooks, coils, · CPC title

• F16K27/00

  Construction of housing (methods for welding housings B23K); Use of materials therefor · CPC title

• B60T8/34

  having a fluid pressure regulator responsive to a speed condition · CPC title

• F16K31/06

  using a magnet {, e.g. diaphragm valves, cutting off by means of a liquid} · CPC title