WHEEL-SPEED SENSOR MOUNTING DEVICE

• US 20140167741A1
• Filed: 02/21/2014
• Published: 06/19/2014
• Est. Priority Date: 08/29/2011
• Status: Active Grant

• Current Assignee: BYD Company Limited
• Original Assignee: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
• Inventors: PAN, Hongming, YUAN, Hongmei
• Granted Patent: US 9,310,392 B2
• Time in Patent Office: Days
• US Class Current: 324/160
• CPC Class Codes: F16H 57/029 characterised by means for sealing the gearboxes, e.g. to improve airtightness
• CPC Class Codes: F16H 59/38 of gearing elements
• CPC Class Codes: G01D 11/245 Housings for sensors
• CPC Class Codes: G01P 1/00 Details of instruments
• CPC Class Codes: G01P 1/026 for speed measuring devices, e.g. pulse generator
• CPC Class Codes: G01P 3/44 for measuring angular speed G01P3/56 takes precedence
• CPC Class Codes: G01P 3/443 mounted in bearings bearings F16C
• CPC Class Codes: G01P 3/48 by measuring frequency of generated current or voltage in general G01R23/00
• CPC Class Codes: G01P 3/481 of pulse signals
• CPC Class Codes: G01P 3/489 Digital circuits therefor

Abstract

A wheel-speed sensor mounting device may be provided. The wheel-speed sensor mounting device includes a reducer case having a first mounting hole, a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end, a wheel-speed sensor mounted within the mounting shell and having a first end extending out of the first end of the mounting shell and opposing to a sensing metal ring mounted in the reducer case and a second end having a lead-out wire, and a sealing member for sealing the second end of the mounting shell. The lead-out wire passes through the sealing member and extends out of the reducer case.

Claims

1. A wheel-speed sensor mounting device, comprising:

a reducer case having a first mounting hole;

a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end;

a wheel-speed sensor mounted within the mounting shell and having a first end extending out of the first end of the mounting shell and opposing to a sensing metal ring mounted in the reducer case and a second end having a lead-out wire; and

a sealing member for sealing the second end of the mounting shell, wherein the lead-out wire passes through the sealing member and extends out of the reducer case.

2. The wheel-speed sensor mounting device of claim 1, wherein the sealing member is an elastic sealing plug fitted within the second end of the mounting shell.

3. The wheel-speed sensor mounting device of claim 1, further comprising a first sealing ring disposed between the reducer case and the mounting shell.

4. The wheel-speed sensor mounting device of claim 1, wherein the mounting shell comprises a cylindrical body and a mounting lug protruding from the cylindrical body and adjacent to the second end of the mounting shell, and the mounting lug is formed with a second mounting hole,

wherein the wheel-speed sensor is mounted within the cylindrical body, and

wherein the mounting shell is fastened to the reducer case via a screw passing through the second mounting hole and screwed into the reducer case.

5. The wheel-speed sensor mounting device of claim 1, further comprising a second sealing ring disposed between the wheel-speed sensor and the mounting shell.

6. The wheel-speed sensor mounting device of claim 5, wherein the mounting shell comprises a cylindrical body having an axial hole which is configured as a stepped hole having a large hole section and a small hole section,

wherein the wheel-speed sensor comprises a column body and a head part axially connected to the column body, the head part is disposed within the large hole section, and the column body is disposed within the small hole section and extends out of the mounting shell, the lead-out wire extends from the head part, the second sealing ring is disposed between the column body and an inner wall of large hole section.

7. The wheel-speed sensor mounting device of claim 1, further comprising a sleeve having an axial slot and being disposed between the wheel-speed sensor and the mounting shell.

8. The wheel-speed sensor mounting device of claim 7, wherein the sleeve is provided with at least one elastic piece for pushing against the wheel-speed sensor.

9. The wheel-speed sensor mounting device of claim 8, wherein the elastic piece is formed by punching a part of the sleeve.

10. The wheel-speed sensor mounting device of claim 8, wherein the elastic piece has a fixed end connected to the sleeve, a free end, and a middle part between the fixed end and the free end extended inwardly so as to push against the wheel-speed sensor.

11. The wheel-speed sensor mounting device of claim 10, wherein the mounting shell comprises a cylindrical body having an axial hole which is configured as a stepped hole having a large hole section and a small hole section,

wherein the wheel-speed sensor comprises a column body and a head part axially connected to the column body, the head part is disposed within the large hole section, and the column body is disposed within the small hole section and extends out of the mounting shell, the lead-out wire extends from the head part, and

wherein the sleeve is provided with at least two catching claws at an end thereof, the sleeve is disposed between the column body and the small hole section, and the catching claws are secured by a bottom end surface of the large hole section.

12. The wheel-speed sensor mounting device of claim 11, wherein the catching claws are integrated with the sleeve.

13. The wheel-speed sensor mounting device of claim 1, wherein the mounting shell comprises a cylindrical body having an axial hole which is configured as a stepped hole having a large hole section and a small hole section, and

wherein the sealing member is fitted within the large hole section and away from the small hole section.

14. The wheel-speed sensor mounting device of claim 1, wherein the sensing metal ring is formed with a plurality of protrusions distributed uniformly along a circumferential direction of the sensing metal ring.

15. The wheel-speed sensor mounting device of claim 12, wherein a cross section of each protrusion has a rectangle shape.

16. A wheel-speed sensor mounting device, comprising:

a reducer case having a first mounting hole;

a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end;

a wheel-speed sensor mounted within the mounting shell and having a first end extending out of the first end of the mounting shell and a second end having a lead-out wire; and

a sealing member for sealing the second end of the mounting shell.

17. The wheel-speed sensor mounting device of claim 16, wherein the lead-out wire passes through the sealing member and extends out of the reducer case.