A mechanical toy car (without electronics) should turn on detecting obstruction

Click For Summary

Discussion Overview

The discussion revolves around the design of a mechanical toy car that can detect obstructions and turn without the use of electronics, focusing on the feasibility of achieving this purely through mechanical means.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant expresses skepticism about the feasibility of a purely mechanical solution for a car that can adapt to obstructions, suggesting that input and signal interpretation are nearly impossible without electronics.
  • Another participant claims to have seen a similar toy that operates on a mechanical basis, indicating that it is possible to design such a car using gears and at a low cost.
  • A question is raised about whether the car can touch the obstruction, with the implication that touching would allow for a mechanical solution, while non-contact detection would require electrical components.
  • A proposed mechanism involves a leg at the front of the car that pushes it backwards and turns the front wheels when it encounters an obstruction, suggesting a continuous connection to the drive shaft.

Areas of Agreement / Disagreement

Participants generally disagree on the feasibility of a purely mechanical solution, with some asserting it is possible while others maintain that it is not achievable without electronics.

Contextual Notes

The discussion includes assumptions about the nature of obstruction detection and the mechanical mechanisms involved, which remain unresolved. The effectiveness of proposed designs is not established.

Who May Find This Useful

Individuals interested in mechanical engineering, toy design, or those exploring non-electronic solutions for movement and detection mechanisms may find this discussion relevant.

vivsarda14
Messages
3
Reaction score
0
HI all.
I wanted to make a toy car (except battery and motor completely mechanical) which should turn and move along on detecting an obstruction. I saw such a toy car but unable to get the design. Please help guys...
 
Engineering news on Phys.org
Not really feasabile to do it by mechanical only. You can do a mechanically programmed car that will move in a certain pattern but not one that will adapt.

The problem boils down to:

Input -> Signal interpretation -> Action

Using purely mechanical means input and signal interpretation are incredibly difficult (read nearly impossible) to achieve.

The action part is really easy, that could be done by rotating a steering wheel by hydraulics or pneumatics or an electric motor that turns a wheel.
 
Dude Even i was amazed but our sir showed us that and told it is done using some gears and the toy costs less than 100 rupees. It is possible dude ...
 
Let us know the details then.
 
vivsarda14 said:
Dude Even i was amazed but our sir showed us that and told it is done using some gears and the toy costs less than 100 rupees. It is possible dude ...

When you say 'detecting an obstruction'. Can the car touch the obstruction? If yes then it can be done mechanically, if not then it can't.

I immedately thought of avoiding the obstuction, which requires a non contact sensor. As such the sensor itsself will have an electrical output.
 
It will touch and then turn ...
Do u no how?
 
Some sort of leg out front that when it touches an obstruction, will push the car backwards and the front wheels to the side enough times to get it out of the obstructions way. The foot would run all the time (connected to the drive shaft).
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
1K
Replies
9
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 5 ·
Replies
5
Views
5K
Replies
1
Views
4K
Replies
3
Views
2K
Replies
15
Views
5K
Replies
9
Views
3K
Replies
3
Views
2K
Replies
1
Views
3K