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Low cost and high precision inertial latch in tiny space

IP.com Disclosure Number: IPCOM000014802D
Original Publication Date: 2000-Feb-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Abstract

A program is disclosed that low cost and high precision inertial latch can be generated in tiny space. The latch is typically used in Hard Disk Drive (HDD).

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Low cost and high precision inertial latch in tiny space

A program is disclosed that low cost and high precision inertial latch can be
generated in tiny space. The latch is typically used in Hard Disk Drive (HDD).

Lever type inertial is made up of two items (lever and latch, Ref Fig 1.).
Mostly lever is made of plastic or metal.

   Plastic lever needs more space than metal lever because of the density.
Metal lever consists of 4 parts (counter weight, 2 pins and plate) by laser
welding
up to now.

   New lever can accomplish low cost by removing 2 pins from lever and adding 2
pins to
latch.(Ref Fig2.)

   Mostly latch is made of plastic.
Generally plastic mold part can realize higher precision than laser welding
part.

Thus this program can accomplish low cost and high precision in tiny space.

Long Lever

Latch (Short B ar)

Pin

Metal chip for B ias force

R otational axis for Latch

R otational axis for Long lever

Counter weight

Fig 1. Lever type Inertial latch

1

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Pin

Fig 2. New Lever type inertial latch

Long Lever

Metal chip for B ias force

Latch (Short B ar)

Rotational axis for Latch

C ounter w eight

R otational axis for Long lever

2

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