Torque sensor

Patent metadata

Field	Value
Publication number	US-9464954-B2
Application number	US-201514984244-A
Country	US
Kind code	B2
Filing date	Dec 30, 2015
Priority date	Dec 17, 2012
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

Provided is a torque sensor. The torque sensor comprises a rotor section; and a stator section comprising a stator holder, wherein the stator holder comprises a plurality of coupling pieces protruding in an axial direction, and a hog ring coupled to pass through the plurality of coupling pieces, wherein the plurality of coupling pieces have through-holes formed in a circumferential direction and an inner wall of the through-hole is adhered to the hog ring.

First claim

What is claimed is:

1. A torque sensor comprising:
a rotor section; and
a stator section comprising a stator holder,
wherein the stator holder comprises a plurality of coupling pieces protruding in an axial direction, and a hog ring coupled to pass through the plurality of coupling pieces,
wherein the plurality of coupling pieces have through-holes formed in a circumferential direction and an inner wall of the through-hole is adhered to the hog ring.

2. The torque. sensor according to claim 1 , wherein the hog ring has an elastic force.

3. The torque sensor according to claim 1 , wherein the plurality of the coupling pieces comprise a coupling protrusion formed on an inner surface thereof, and the coupling protrusion is coupled to a coupling recess formed at an outer surface of a shaft.

4. The torque sensor according to claim 1 , wherein the hog ring and the plurality of coupling pieces are formed through insert molding.

5. The torque sensor according to claim 1 , wherein the stator holder is configured to fix a first stator ring and a second stator ring.

6. The torque sensor according to claim 1 , wherein the rotor section comprises a rotor holder and a ring-shaped magnet mounted on an outer surface of the rotor holder.

7. The torque sensor according to claim 6 , wherein the rotor holder comprises a plurality of coupling pieces protruding in an axial direction, and a hog ring configured to pass through the plurality of coupling pieces of the rotor holder.

8. The torque sensor according to claim 7 , wherein the plurality of coupling pieces of the rotor holder have through-holes, through which the hog ring of the rotor holder passes, formed in a circumferential direction, and an inner wall of the through-hole of the rotor holder is adhered to the hog ring of the rotor holder.

9. A torque sensor comprising:
a rotor section comprising a rotor holder; and
a stator section,
wherein the rotor holder comprises a plurality of first coupling pieces protruding in the axial direction, and a first hog ring configured to pass through the plurality of first coupling pieces,
wherein the plurality of first coupling pieces have through-holes formed in a circumferential direction, and an inner wall of the through-hole is adhered to the first hog ring.

10. The torque sensor according to claim 9 , wherein the rotor section comprises a magnet mounted on an outer circumferential surface of the rotor holder.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Sungmin

Classifications

• F16B21/16

  with grooves or notches in the pin or shaft · CPC title

• B62D6/10

  characterised by means for sensing {or determining} torque · CPC title

• G01L3/101

  involving magnetic or electromagnetic means · CPC title

• G01L3/02

  Rotary-transmission dynamometers · CPC title

• G01L3/104 Primary

  involving permanent magnets · CPC title