KOLT
Jinlong Machinery & Electronics

MOUNTING OF VIBRATION MOTORS IN YOUR PRODUCT

In haptic feedback applications correctly mounting the ERM vibration motor is key to ensuring the user will receive the appropriate level haptic feedback. Vibration motors that are not designed to be PCB mounted, are typically mounted in a recessed pocket that is molded into the products housing. This is the preferred method of mounting as vibration energy is directly coupled to the products housing where it can be felt by the user.

In touch screen haptic feedback applications, the vibration motor can be mounted directly to the frame of the display assembly.

While leaded components may be used, compression spring contacts are ideally suited for this application. Use of such vibration motors will also eliminate time consuming secondary operations such as the hand soldering of lead wires, and soldering of through hole pins. They also can be easily replaced in the field should they fail.

A compression spring vibration motor may be mounted by molding a pocket into the shell of the devices housing. PCB contact pads mate with the contacts on the vibration motor. We can provide you with 3-D CAD files to aid you in the design process.

We do not have an official design guide. Information we have about our customers designs can not be disclosed due to confidentiality reasons. Fortunately, there is information available that is in the public domain. We have provided photos of actual products that exemplify how our vibration motors can be mounted. The cellphones pictured below are discontinued models and may be inexpensively purchased from sites such as ebay.com.

Another recommendation is to visit sites that offer “Tear Downs” of devices that in some cases show how the vibration motor is mounted. Such sites are:

www.isuppli.com
http://www.techinsights.com/teardown.com/
www.ifixit.com

Some note worthy online tear downs are:

HTC ONE M8
https://www.ifixit.com/Teardown/HTC+One+%28M8%29+Teardown/23615
step 12

HTC NEXUS 9
https://www.ifixit.com/Teardown/Nexus+9+Teardown/31425
step 15

FITBIT FLEX
https://www.ifixit.com/Teardown/Fitbit+Flex+Teardown/16050
step 8