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C-4
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Technical Guide for Pushbutton Switches
Mechanical Conditions
Operating Force and Operating Method
x
Fingertip operation is an important feature of Pushbutton Switches.
In terms of Switch operation, Pushbutton Switches differ greatly
from detection switches such as Microswitches. Operating the
Switch using a hard object (e.g., metal), or with a large or sudden
force, may deform or damage the Switch, resulting in faulty or rough
operation, or shortening of the Switch life. The strength varies with
the size and construction of the Switch. Use the appropriate Switch
for the application after confirming the operating method and
operating force with this catalog.
x
The pushbutton surface is composed of resin. Therefore, do not
attempt to operate the pushbutton using a sharp object, such as a
screwdriver or a pair of tweezers. Doing so may damage or deform
the pushbutton surface and result in faulty operation.
Mounting
x
Switches can be broadly divided into two categories according to
mounting method: panel-mounting models and PCB-mounting
models. Use the appropriate model for the mounting method
required. Basically, panel-mounting Switches can withstand a
greater operating force than PCB-mounting Switches. If, however,
the panel thickness or the panel-cutout dimensions are not suitable
for the Switch, it may not be able to withstand the normal operating
force. With continuous mounting in particular, select a panel of a
thickness that is easily sufficient to withstand the total operating
force.
x
Panel-mounting Switches can be divided into two categories
according to the mounting method: snap-in mounting models and
screw-mounting models. Snap-in mounting Switches are held in
place with the elasticity of resin or a metal leaf spring. Do not
attempt to modify the spring after mounting. Doing so may result in
faulty operation or damage the mounting structure. Mount screw-
mounting models using the screws and nuts provided (or
individually specified). Tighten the screws to the specified torque.
Mounting with different screws or nuts, or tightening beyond the
specified torque may result in distortion of the inside of the case or
damage to the screw section.
x
Subjecting the Switch to severe vibrations or shock may result in
faulty operation or damage. Also, many of the Switches are
composed of resin so contact with sharp objects may result in
damage to the surface. This kind of damage may spoil the
appearance of the Switch or result in faulty operation. Do not throw
or drop the Switch.
Hammer
Do not apply
excessive or
sudden force.
Do not use
sharp objects.
Screwdriver
Tweezers
Do not attempt to
modify the spring
after mounting.
Use the
screws and
nuts provided
(or specified).
Snap-in Mounting
Screw Mounting
Do not drop or
knock the Switch.
Do not drop objects
or place
heavy objects on
the Switch.
Hammer
Screwdriver
Do not operate the
Switch with heavy
or sharp objects.
