# US 10,479,337 B2 · Solenoid valve for brake system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,337 B2 - Document ID: US10479337B2 - Status: Granted - Kind: B2 - Application number: 15/896,064 - Filed: 2018-02-14 - Published: 2018-08-16 - Granted: 2019-11-19 - Earliest claimed: 2017-02-15 - Assignees: Mando Corporation - Applicants: Mando Corporation - Inventors: In-Wook Jeon - Web page: https://patentgrep.com/patent/US10479337B2 ## CPC - B60T 13/686: {in hydraulic systems or parts thereof} - B60T 8/363: {in hydraulic systems (B60T8/3655, B60T8/3675 and B60T8/369 take precedence)} - B60T 13/662: {characterised by specified functions of the control system components} - B60T 17/04: Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses (traction couplings involving joints for supply lines, electric circuits, or the like B60D1/62; couplings peculiar to railway vehicles for, or combined with, couplings or connectors for fluid conduits or electric cables B61G5/06; pipes, cut-off valves, couplings, air hoses per se F16C, F16K, F16L) - F16K 31/0655: {Lift valves} - F16K 31/0689: {Braking of the valve element} - B60Y 2400/81: Braking systems - H01F 2007/086: {Structural details of the armature} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract Disclosed is a solenoid valve for a brake system. The solenoid valve includes a valve housing installed in a bore of a modulator block and configured to include an internal flow path, a valve sheet provided at the internal flow path of the valve housing and configured to include an orifice, an armature configured to be slidably moved up and down by a magnet core and to include an opening or closing sphere configured to selectively open or close the orifice, a sleeve configured to accommodate the armature therein and to have one end coupled to the valve housing and the other end at which the magnet core is provided, and a damper guide provided at the internal flow path of the valve housing to come into contact with and surround the armature. ## Claims ### Claim 1 A solenoid valve for a brake system, comprising: a valve housing installed in a bore of a modulator block and configured to include an internal flow path; a valve seat provided at the internal flow path of the valve housing and configured to include an orifice; an armature configured to be slidably moved up and down by a magnet core and to include an opening or closing sphere configured to selectively open or close the orifice; a sleeve configured to accommodate the armature therein and to have one end coupled to the valve housing and the other end at which the magnet core is provided; and a damper guide disposed on a groove formed on an inner surface of the internal flow path of the valve housing to come into contact with and surround the armature. ### Claim 2 (depends on 1) The solenoid valve of claim 1, wherein the armature comprises a large diameter portion configured to face the sleeve and a small diameter portion configured to include an opening or closing sphere in contact with the orifice inside the valve housing, and wherein the damper guide is provided at the small diameter portion. ### Claim 3 (depends on 1) The solenoid valve of claim 1, wherein the damper guide comprises: a cylindrical body having a hollow; and a flow hole recessed in an inner wall of the hollow. ### Claim 4 (depends on 1) The solenoid valve of claim 1, wherein the damper guide comprises: a cylindrical body having a hollow; and a contact protrusion configured to protrude from an inner wall of the hollow. ### Claim 5 (depends on 1) The solenoid valve of claim 1, further comprising a return spring provided at the magnet core and the armature to apply an elastic force, wherein the return spring applies an elastic force to the magnetic core and the armature so as to usually close the orifice. ### Claim 6 (depends on 1) The solenoid valve of claim 1, wherein the damper guide is spaced apart from the valve seat. ### Claim 7 (depends on 1) The solenoid valve of claim 1, wherein the damper guide comprises a hollow, and wherein the hollow comprises a sliding portion in contact with the armature and a flow path portion which does not come into contact with the armature. ### Claim 8 (depends on 7) The solenoid valve of claim 7, wherein pluralities of such sliding portions and flow path portions are alternately arranged in a circumferential direction. ### Claim 9 (depends on 1) The solenoid valve of claim 1, wherein the damper guide comprises a cutting gap for insertion of the valve housing. ### Claim 10 (depends on 9) The solenoid valve of claim 9, wherein the cutting gap is provided in the damper guide in parallel with a longitudinal direction of the armature and forms a gap flow path.