Development of a centralized door lock and power window instructional trainer / by John Timothy B. Diana and Christian Joseph O. Lagura.

Design Project (Bachelor of Industrial Technology Major in Automotive Technology) Cavite State University.

Includes bibliographical references.

College of Engineering and Information Technology (CEIT), Department of Industrial Engineering and Technology

DIANA, JOHN TIMOTHY B. and LAGURA, CHRISTIAN JOSEPH 0. Development of
a Centralized Door Lock and Power Window Instructional Trainer. Undergraduate Design
Project. Bachelor of Industrial Technology major in Automotive Technology Cavite State
University, Indang, Cavite. June 2019. Adviser: Prof. Danielito R. Escano.
The power window system is the system to open and close the windows by switch
operation. The power window motor rotates when the power window switch was operated. The
power window motor revolution is then changed to up-and-down motion by the window regulator
to open or close the window. The power door lock is a mechanism that locks and unlocks the
vehicle's doors with the push of a button (power door-lock actuator). Mounted inside the door,
an electric motor, gears and linkage, and a cable that extends or retracts were used to operate
the lock. The design project is about door lock and power window that will help the students to
identify the advantages and disadvantages of modern power window and door lock technology.
The design project objective is to construct and develop a centralized door lock and
power window instructional trainer. The design project served as the theoretical model and
helped to enhance the knowledge of the students about the power window and centralized door
lock works. Also, it helped them to lessen the hardship on how to install the mechanism door
lock and power window for future studies on the same nature of existing problem. The
development of the design project started with cutting the tubular bars into small pieces to
construct a frame.
To hold the weight and stability of the instructional trainer, it was fully welded with
angular bars for the braces of the frame. The researchers connected the entire wiring
installation based from the correct the wiring diagram to make the power window and door lock
work. It was provided with additional plywood for the ignition switch, banana jack and banana
plug for the convenience of the students in wiring activity. Also, a heavy duty skid wheel was
installed to move the instructional trainer easily inside the automotive laboratory. The frame has
a dimension of 66 in x 31 in x 31 in.
The design project focused on the mechanism and operation of a power window and
locking system of a real car door. The indicator lights served as two rear windows and the
actuator represents how the locking system of rear door works. The trunk lock motor
represented as the mechanism of a trunk. The students must connect all the function and
features in the banana jack to make the entire mechanism work. As the students gets the exact
wiring of the banana jack in the trainer, the student will push the ignition switch to operate the
main switch, power window, door lock, and other components. As the students press the power
window right switch to up, the power window will operate and it will go up; the same thing will
happen if they press the power window to down. And also, if the students press the switch of the
door lock the two front door will lock and the two actuator will push the rod; it means that the two
rear door will also lock. When they press the door lock switch to unlock, the two front door will
unlock and the rod of the actuator will pull; it means that the two rear doors is also unlock. when
they press the trunk lock switch the trunk lock will open to indicate the operation of trunk of a
real car.
The design project was evaluated in the Department of Industrial Engineering and
Technology by 25 students and five instructors. The functionality and reliability of the design
project was evaluated which gained an overall mean of 4.66 with an outstanding degree or
level. Based on the obtained result, the design project was proven and tested that it was helpful
for the automotive students and instructors to expand their knowledge about the mechanism of

door lock and power window. Hence, it is useful for them to obtain knowledge about power
window and door lock mechanism. The authors highly recommend to improve other
components and to add more features for the better performance of the instructional trainer.

Submitted to the University Library 08/22/2019 DP-721