Wheel-speed sensor mounting device

• US 9,310,392 B2
• Filed: 02/21/2014
• Issued: 04/12/2016
• 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
• Primary Examiner(s): Aurora, Reena
• Application Number:
  US14/186,884
• Publication Number:
  US 20140167741A1
• Time in Patent Office: 781 Days
• Field of Search: 324/207.25, 324/173, 324/166
• US Class Current: 1/1
• 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 and a sensing metal ring mounted on the reducer case;

a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end, wherein the mounting shell is configured to mount a wheel-speed sensor therewithin, wherein the first end of the mounting shell is configured to enable a first end of the wheel-speed sensor to extend out of the mounting shell and opposing to the sensing metal ring; and

a sealing member for sealing the second end of the mounting shell, wherein the second end of the mounting shell enables a lead-out wire of the wheel-speed sensor to pass through the sealing member and to extend out of the reducer case; and

a first sealing ring disposed at a mounting position of the wheel-speed sensor within the mounting shell.

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 second 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 configured to mount the wheel-speed sensor therewithin 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,

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, 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.

6. 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.

7. The wheel-speed sensor mounting device of claim 6, wherein the sleeve is provided with at least one elastic piece for pushing against the wheel-speed sensor.

8. The wheel-speed sensor mounting device of claim 7, wherein the elastic piece is formed by punching a part of the sleeve.

9. The wheel-speed sensor mounting device of claim 7, 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.

10. The wheel-speed sensor mounting device of claim 9, 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.

11. The wheel-speed sensor mounting device of claim 10, wherein the catching claws are integrated with the sleeve.

12. The wheel-speed sensor mounting device of claim 11, wherein a cross section of each protrusion has a rectangle shape.

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. 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, wherein the mounting shell is configured to mount a wheel-speed sensor therewithin, wherein the first end of the mounting shell is configured to enable a first end of the wheel-speed sensor to extend out of the mounting shell;

a sealing member for sealing the second end of the mounting shell; and

a sealing ring disposed at a mounting position of the wheel-speed sensor within the mounting shell.

16. The wheel-speed sensor mounting device of claim 15, wherein the second end of the mounting shell enables a lead-out wire of the wheel-speed sensor to pass through the sealing member and to extend out of the reducer case.

17. A wheel-speed sensor assembly, comprising:

a wheel-speed sensor including a first end and a second end having a lead-out wire;

a wheel-speed sensor mounting device comprising;

a reducer case having a first mounting hole and a sensing metal ring mounted on the reducer case,

a mounting shell mounted within the first mounting hole and having a first end extending into the reducer case and a second end, wherein the wheel-speed sensor is mounted within the mounting shell, and the first end of the wheel-speed sensor extends out of the first end of the mounting shell and opposing to the sensing ring,

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

a sealing ring disposed between the wheel-speed sensor and the mounting shell.

18. A wheel-speed sensor assembly, comprising:

a wheel-speed sensor including a first end and a second end having a lead-out wire;

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, wherein the wheel-speed sensor is mounted within the mounting shell, and the first end of the wheel-speed sensor extends out of the first end of the mounting shell,

a sealing member for sealing the second end of the mounting shell, and

a sealing ring disposed between the wheel-speed sensor and the mounting shell.