Gear detection switch

Patent metadata

Field	Value
Publication number	US-9880231-B2
Application number	US-201414462161-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Dec 20, 2013
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

A gear detection switch apparatus may include a detection unit into which a magnetization target is inserted at a front part thereof, the detection unit having a printed circuit board (PCB), a front housing having an open front end and into which the detection unit is inserted so that a frontal end of the PCB is exposed through the open front end, a rear housing connected to a rear side of the front housing, wherein a connection boundary between the front and rear housings is molded with a molding material, a Hall sensor device coupled to the exposed frontal end of the PCB, and a finishing closure molded over the open front end of the front housing.

First claim

What is claimed is:

1. A gear detection switch apparatus comprising:
a detection unit into which a magnetization target is inserted at a front part thereof, the detection unit having a printed circuit board (PCB);
a front housing having an open front end and into which the detection unit is inserted so that a frontal end of the PCB is exposed through the open front end;
a rear housing connected to a rear side of the front housing, wherein a connection boundary between the front and rear housings is molded with a molding material;
a Hall sensor device coupled to the exposed frontal end of the PCB;
a finishing closure molded over the open front end of the front housing; and
a control finger which has a stepped part towards the finishing closure and which is spaced from a front part of the finishing closure, wherein the control finger is configured such that, when a shifting operation is carried out, the control finger slides relative to the finishing closure so that a distance between the control finger and the Hall sensor device varies,
wherein the stepped part of the control finger is defined by an inclined surface which is formed into a dovetail shape and wherein a radial axis of the control finger passing a distal end of the inclined surface has an acute angle with an imaginary axis aligned on the inclined surface passing the distal end in order not to be exposed towards the Hall sensor device.

2. The gear detection switch apparatus according to claim 1 , wherein the detection unit has a front extension, into which the magnetized target is inserted.

3. The gear detection switch apparatus according to claim 2 , wherein the detection unit has a front extension, into which the Hall sensor device is coupled.

4. The gear detection switch apparatus according to claim 1 , wherein the detection unit has a through-hole at a lower end thereof, and the PCB is inserted into the detection unit through the through-hole such that the frontal end of the PCB is positioned at the front end of the detection unit.

Assignees

• Hyundai Motor Co Ltd
• Daesung Electric Co Ltd
• Hyndai Motor Company

Inventors

• Park Jeong Yeon
• Lee Seag Woo
• Han Chang Kyu

Classifications

• F16H57/02

  Gearboxes; Mounting gearing therein · CPC title

• G01M13/021

  Gearings · CPC title

• F16H63/30

  Constructional features of the final output mechanisms · CPC title

• G01D5/147

  influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other · CPC title

• F16H61/02 Primary

  characterised by the signals used · CPC title