Steering system for vehicle

1. A steering system for a vehicle, comprising:

a housing section;

a rack section configured to penetrate the housing section;

a case section mounted in the housing section; and

a sensor section, mounted in the case section, configured to engage the rack section and sense an amount of movement of the rack section while being rotated, wherein the sensor section comprises:

a sensing rack section which rotate mounted on the case section and is rotated while meshed with the rack section;

a sensing transmission section formed on the sensing rack section;

one or more sensing gear sections which are rotatably mounted in the case section and are rotated while meshed with the sensing transmission section; and

a sensing board section configured to sense the sensing gear sections, and

wherein the sensing rack section comprises:

a sensing rack shaft part rotatably mounted on the case section; and

a sensing rack gear part mounted in the sensing rack shaft part, inserted into the housing section, and meshed with the rack section.

2. The steering system of claim 1 , wherein the housing section comprises:

a housing body part configured to pass the rack section;

a housing mount part, formed on the housing body part and in which the case section is mounted; and

a housing hole part, formed in the housing mount part, and in which the sensor section is disposed.

3. The steering system of claim 2 , wherein the housing section further comprises a housing sealing part, disposed between the housing mount part and the case section, configured to prevent foreign materials from flowing into the housing hole part.

4. The steering system of claim 1 , wherein the case section comprises:

a lower-case section; and

an upper-case section covering the lower-case section.

5. The steering system according to claim 4 , wherein the lower-case section comprises:

a lower storage part having an open upper side;

a lower support part, formed on the lower storage part, configured to support the sensor section to be rotatable;

a lower opening part, formed on one side of the lower storage part, configured to communicate with the housing section to expose the sensor section;

a lower enlargement part, extending from the one side of the lower storage part, configured to couple to the housing section; and

a lower insertion part, formed on another side of the lower storage part, configured to receive and accommodate a connector.

6. The steering system of claim 5 , wherein the upper-case section comprises:

an upper storage part configured to cover the lower storage part;

an upper support part, formed on the upper storage part, configured to support the sensor section to be rotatable;

an upper opening part, formed on one side of the upper storage part, configured to communicate with the housing section to expose the sensor section; and

an upper enlargement part, extending from the one side of the upper storage part, configured to couple to the housing section.

7. The steering system of claim 1 , wherein, when the sensing gear sections comprise two sensing gear sections, each of the two sensing gear sections is configured to engage with the sensing transmission section.

8. The steering system of claim 1 , wherein, when the sensing gear sections comprise two sensing gear sections, the two sensing gear sections are configured to engage with each other, and either one of the two sensing gear sections is configured to engage with the sensing transmission section.