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US 9,434,410 B2Granted
Apparatus for detecting torque and steering system having the same
AssigneeLG Innotek Co., Ltd.
InventorChanghwan Lee
Life of this patent
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Abstract
The present invention relates to a torque measuring device including a stator arranged at an inner surface of a case housing, a magnet distantly arranged with the stator at a predetermined gap, a sensing unit detecting a magnetic field generated between the stator and the magnet, and a non-magnetic stator holder integrally formed with a stator fixture fixed by the stator and a shaft fixture fixed by a shaft, whereby manufacturing cost of the torque measuring device can be minimized, and defects generated in the course of manufacturing process can be minimized.
Claims20
A torque measuring device, the torque measuring device comprising:
- a case housing a first case and a second case distantly interconnected with the first case;
- a stator holder disposed in the case housing;
- first and second stators each having a ring-shaped stator body and a plurality of stator teeth formed at an inner circumferential surface of the stator body;
- a magnet inserted into the stator holder, the magnet being respectively arranged in the first and second stators with a predetermined gap;
- and
- a sensing unit detecting a magnetic field generated between the first and second stators and the magnet;
- wherein the first stator is secured at one lateral surface of the stator holder, and the second stator is secured at another lateral surface of the stator holder;
- wherein the stator holder includes a stator fixture for coupling the first and second stators at opposite ends of the stator fixture;
- wherein a shaft fixture is extended from a lateral surface of the stator fixture;
- wherein the stator fixture and the shaft fixture are integrally formed with the stator holder;
- wherein the stator fixture is protrusively formed with two accommodation units, wherein each of the accommodation units accommodates each of the stator bodies at a distal end of a periphery of the corresponding stator body;
- wherein the stator fixture includes a plurality of insertion holes and wherein each of the plurality of insertion holes has a predetermined position for a stator tooth to be circumferentially inserted;
- and
- wherein each of the stator teeth of the first stator is meshed with a corresponding stator tooth of the second stator in the predetermined position through a corresponding one of the insertion holes.
11 more elements
A vehicular steering device, the vehicular steering device comprising:
- a first shaft connected to a steering wheel;
- a second shaft connected to the first shaft;
- a case housing a first case formed with a first through hole to pass the first shaft and a second case distantly interconnected with the first case and formed with a second through hole to pass the second shaft;
- a stator holder disposed in the case housing;
- first and second stators each having a ring-shaped stator body and a plurality of stator teeth formed at an inner circumferential surface of each stator body;
- a magnet inserted into the stator holder, the magnet being respectively arranged in the first and second stators with a predetermined gap;
- and
- a sensing unit disposed at an inner surface of the case housing and detecting a magnetic field generated between the first and second stators and the magnet;
- wherein the first stator is secured at one lateral surface of the stator holder, and the second stator is secured at another lateral surface of the stator holder;
- wherein the stator holder includes a stator fixture for coupling the first and second stators at opposite ends of the stator fixture;
- wherein a shaft fixture is extended from a lateral surface of the stator fixture;
- wherein the stator fixture and the shaft fixture are integrally formed with the stator holder;
- wherein the stator fixture is protrusively formed with two accommodation units, wherein each of the accommodation units accommodates each of the stator bodies at a distal end of a periphery of the corresponding stator body;
- wherein the stator fixture includes a plurality of insertion holes and wherein each of the plurality of insertion holes has a predetermined position for a stator tooth to be circumferentially inserted;
- and
- wherein each of the stator teeth of the first stator is meshed with a corresponding stator tooth of the second stator in the predetermined position through a corresponding one of the insertion holes.
13 more elements
Dependencies are inferred from the claim text.