# US 10,871,501 B2 · Wheel speed sensor with integrated clamping sleeve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,501 B2 - Document ID: US10871501B2 - Status: Granted - Kind: B2 - Application number: 16/220,042 - Filed: 2018-12-14 - Published: 2020-06-18 - Granted: 2020-12-22 - Earliest claimed: 2018-12-14 - Assignees: Bendix Commercial Vehicle Systems LLC - Applicants: Bendix Commercial Vehicle Systems LLC - Inventors: Nianqing Zhou; Daniel Peter Zula; Jack Dunlap Mason - Web page: https://patentgrep.com/patent/US10871501B2 ## CPC - G01P 1/026: {for speed measuring devices, e.g. pulse generator} - G01P 3/487: delivered by rotating magnets - B60B 27/0068: {the element being a sensor} - G01P 1/00: Details of instruments - B60T 8/329: {Systems characterised by their speed sensor arrangements} - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION - 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 ## Abstract A wheel speed sensor includes a housing having a longitudinal axis. The housing receives a speed measurement instrument and faces an exciter ring upon insertion into an opening in a sensor mounting block spaced from the excite ring such that the instrument senses rotation of the exciter ring. A plurality of springs are mounted in the housing and project radially outwardly therefrom with at least a subset of the springs engaging a surface of the opening in the sensor mounting block. Each spring has first and second ends over molded by the housing and an intermediate section between the first and second ends spaced from a radially outer surface of the housing. ## Claims ### Claim 1 A wheel speed sensor, comprising: a housing having a longitudinal axis, the housing configured to receive a speed measurement instrument therein and to face an exciter ring upon insertion into an opening in a sensor mounting block spaced from the exciter ring such that the speed measurement instrument senses rotation of the exciter ring; and, a plurality of springs mounted in the housing and projecting radially outwardly from the housing, at least a subset of the plurality of springs configured to engage a surface of the opening in the sensor mounting block upon insertion of the housing into the opening, each of the plurality of springs having first and second ends over molded by the housing and an intermediate section between the first and second ends spaced from a radially outer surface of the housing. ### Claim 2 (depends on 1) The wheel speed sensor of claim 1 wherein the speed measurement instrument is over molded by the housing. ### Claim 3 (depends on 1) The wheel speed sensor of claim 1 wherein the housing defines a connector configured to receive an electric conductor that transmits signals generated by the speed measurement instrument. ### Claim 4 (depends on 1) The wheel speed sensor of claim 1 wherein the speed measurement instrument includes a pole piece, a magnet disposed at one end of the pole piece and a coil surrounding the pole piece. ### Claim 5 (depends on 1) The wheel speed sensor of claim 1 wherein the intermediate section of each one of the plurality of springs is separated from the intermediate section of every other one of the plurality of springs in axial and circumferential directions by a portion of the housing. ### Claim 6 (depends on 1) The wheel speed sensor of claim 1 wherein the plurality of springs are arranged in a helical pattern on the housing. ### Claim 7 (depends on 1) The wheel speed sensor of claim 1 wherein the plurality of springs are arranged in a plurality of circles on the housing. ### Claim 8 (depends on 1) The wheel speed sensor of claim 1 wherein the first and second ends of each spring of the plurality of springs are axially spaced from one another. ### Claim 9 (depends on 1) The wheel speed sensor of claim 1 wherein the first and second ends of each spring of the plurality of springs are circumferentially spaced from one another. ### Claim 10 (depends on 1) The wheel speed sensor of claim 1 wherein the first end of a first spring of the plurality of springs is connected to the second end of a second spring of the plurality of springs by a connecting section over molded by the housing. ### Claim 11 A wheel speed sensor assembly, comprising: an exciter ring mounted to a wheel hub supporting a wheel of a vehicle; and, a wheel speed sensor mounted in an opening in a sensor mounting block on an axle supporting the wheel hub, the wheel speed sensor including a housing having a longitudinal axis, the housing configured to receive a speed measurement instrument therein and facing, and spaced from, the exciter ring such that the speed measurement instrument senses rotation of the exciter ring; and, a plurality of springs mounted in the housing and projecting radially outwardly from the housing, at least a subset of the plurality of springs engaging a surface of the opening in the sensor mounting block, each of the plurality of springs having first and second ends over molded by the housing and an intermediate section between the first and second ends spaced from a radially outer surface of the housing. ### Claim 12 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the speed measurement instrument is over molded by the housing. ### Claim 13 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the housing defines a connector configured to receive an electric conductor that transmits signals generated by the speed measurement instrument. ### Claim 14 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the speed measurement instrument includes a pole piece, a magnet disposed at one end of the pole piece and a coil surrounding the pole piece. ### Claim 15 (depends on 11) The wheel speed sensor assembly of claim of claim 11 wherein the intermediate section of each one of the plurality of springs is separated from the intermediate section of every other one of the plurality of springs in axial and circumferential directions by a portion of the housing. ### Claim 16 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the plurality of springs are arranged in a helical pattern on the housing. ### Claim 17 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the plurality of springs are arranged in a plurality of circles on the housing. ### Claim 18 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the first and second ends of each spring of the plurality of springs are axially spaced from one another. ### Claim 19 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the first and second ends of each spring of the plurality of springs are circumferentially spaced from one another. ### Claim 20 (depends on 11) The wheel speed sensor assembly of claim 11 wherein the first end of a first spring of the plurality of springs is connected to the second end of a second spring of the plurality of springs by a connecting section over molded by the housing. ### Claim 21 A method of forming a wheel speed sensor, comprising the steps of: positioning a speed measurement instrument and a plurality of springs within a fixture such that the plurality of springs surround the speed measurement instrument and each of the plurality of springs is spaced from every other one of the plurality of springs; and, over molding the speed measurement instrument and the plurality of springs to form a wheel speed sensor having a housing having a longitudinal, the housing receiving the speed measurement instrument therein and mounting the plurality of springs such that the plurality of springs project radially outwardly from the housing for engagement with a surface of an opening in a sensor mounting block proximate an exciter ring upon insertion of the housing into the opening, each of the plurality of springs having first and second ends over molded by the housing and an intermediate section between the first and second ends spaced from a radially outer surface of the housing.