What is Constant Force Springs "Conston Springs"
Conston Spring is an constant load spring originally designed and produced in Japan.
The operation force is always constant in push/pull movement and in all the various length.

C type conston
C type conston consists of one drum.
The spring plate is directly pulled out.
Suitable for the application with guide rail.

N type conston
N type conston consists of two drums.
The spring plate is indirectly pulled out by connected wire.
Suitable for the application without guide rail and flexible for compact space.

Characteristics of Constant Force Springs "Conston Springs"
The output (torque) of Conston Spring is constant after reaching the maximum output.
(As the drum wraps 1/2 rotation spring, the output will be constant from the beginning of the pull out. )
Generally with the wire spring, the space for the spring is required after the spring is in neutral position.
With the Conston Spring, it provides more space as the plate spring will be stored around the drum even with the long stroke item.

Relation between Output/Size/Life cycle
Extend life cycle, but not changing output and width
=>Diameter will get enlarged.
Increase output, but not changing diameter and size
=>Life cycle will get decreased.
Increase output, but not changing life cycle and width
=>Diameter will get enlarged.

Usage examples for TK Constant Force Springs "Conston Springs":

•  Balancer
• Door open/close
• Window open/close
• Free-stop
• Fixing the object in any location with out using physical stopper, by setting the pull force equivalent to object weight.

Download Line-up Catalog Conston springs

Constant Force Springs "Conston Springs"
Takachiho Americas Conston Springs have a unique characteristic of a constant pulling force for the entire stroke length. They have been used in a variety of applications from window shades on train windows to the adjustable length settings of desk fans. There are a wide range of possibilities for innovative design applications of the Conston Springs which have yet to be explored.

Takachiho America 
Takachiho America (TK America), Inc. was established as a subsidiary of Takachiho Koheki Co., Ltd.(TK) in 2015. Founded in 1952, Takachiho Koheki has the pedigree of a thoroughbred technology trading company of cutting edge mechanical and electrical components around the world.

Takachiho America focuses on Motion Control Solutions and Business Development.

Motion Control Solutions
As a leading supplier of mechanical components such as slide rails, soft absorbers, dampers, conston springs, and cable guides worldwide, our technically trained sales team works with our engineers to develop innovative and reliable products to meet the demand of our customers in every manufacturing industry.

Our services include:

• Design Consultations
• Development and Customization of Mechanical Components
• Preparation for Mass Production