High Detection Reliability Ensured  

TOKYO- September 24, 2015 -Alps Electric has developed the “SPVQD Series” Waterproof Detector Switch with Internal Resistors, suitable for detecting the opening and closing of automobile doors, trunks and hoods. Samples will be made available from September 2015.  

A  growing  number  of  vehicle  models  in  today’s  automobile  market  are  equipped  with  idle  stop (start–stop) systems that help to improve fuel efficiency. For safety reasons, the automatic engine restart function of an idle stop system is suspended while doors are opened and closed. Sometimes, however, when there is a technical fault such as a broken circuit, the idle stop system will not activate. To bring out a vehicle’s full fuel efficiency potential, a mechanism is required to both accurately detect open or closed status and quickly detect breaks, shorts or other abnormalities in surrounding circuits.

Detection  typically  employs  an  open/closed  detection  switch  combined  with  a  resistor  (or  resistors). Circuit  breaks  or  shorts  are  detected  from  abnormal  output  voltage  values  during  on–off  switching. Earlier  switches  have  primarily  used  external  lead-type  resistors  that  are  soldered  to  the  open/closed detection  circuit,  but  issues  remained,  such  as  the  occurrence  of  soldering  defects  and  faulty  water resistance sealing.  
 

The SPVQD Series contributes to quality consistency and circuit downsizing by incorporating chip-type resistors actually inside the switch package while retaining the same dimensions (15.2 × 6.4 × 7.45mm) as the existing SPVQA Series. This also allows the customer to omit processes for affixing external resistors. As up to three resistors can be mounted, facilitating a wide range of resistance settings, the product also helps to improve design freedom.    
 

Furthermore, the detector employs a “clip” type double-sided sliding contact structure that clamps a fixed contact from both sides. This was achieved through application of Alps Electric’s proprietary precision processing technology. The configuration enables high contact reliability with strong particulate, vibration and impact resistance. The dust and water resistance rating of the SPVQD Series is IP67.*  

Features  
 

Waterproof detector switch with internal resistors  
1. Use of internal resistors contributes to improved reliability and circuit downsizing  
2. IP67 dust and water resistance
3. Sliding contact structure enables outstanding detection reliability  
 
 
Principal Applications  
 

• Detection of opening/closing and faults for automobile doors, trunks and hoods    
 
 
Planned Release  
 

Samples available:  From September 2015  
Mass production:    From October 2015  
Sample price:    \220 (incl. tax)    
Monthly output:    500,000 units (August 2015)    
Development:  Wakuya Plant, Engineering Headquarters (Wakuya, Toda-gun, Miyagi Prefecture)
Production:  Wakuya Plant, Production Headquarters (Wakuya, Toda-gun, Miyagi Prefecture)

 

 

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Companies Website:
http://www.alps.com/e/

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