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2011 power cord retainer

Posted: Wed Dec 05, 2012 5:57 pm
by jp
The 2011 power jack is inside the case and the barrel is held in by the case. I'm concerned though about the power cord rubbing/wearing against the metal case as their is no grommet. Is this a fair concern?

I'll be able to pull it where I use POE, but I'm cautious to use it elsewhere for now.

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Re: 2011 power cord retainer

Posted: Wed Dec 05, 2012 6:43 pm
by diegotormes
bad design!

recently I bought 100 for CPE, was an unpleasant surprise see this.

Re: 2011 power cord retainer

Posted: Wed Dec 05, 2012 6:58 pm
by mrz
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.

Re: 2011 power cord retainer

Posted: Wed Dec 05, 2012 8:19 pm
by jp
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.
Can the same logic be applied to a 120/240v power breaker panel? We use bushings/grommets on that. I realize 24vdc isn't dangerous for electrocution, but if the RB were under papers or something flamable and the power cord were compromised at this point it could cause safety and reliability issues. I can forsee the power cord getting damaged by a tug on the power cord pulling the wire against the metal, or by opening/closing the case even once causing a weakening of the insulation. The insulation will get more brittle with time and temperature.

I'd prefer a normal and accessible board-mounted power barrel connector. If you want to make sure it doesn't come unplugged put a spot for a ziptie to go on the back for strain relief fastening of the power cable.

The present design also locks MT into requiring a specific wall-wart; something with a slightly differently shaped molded connector is going to require a new RB design.

Re: 2011 power cord retainer

Posted: Wed Dec 05, 2012 8:54 pm
by nz_monkey
Sergejs took photos of my suggested solution at the AU MUM.

It uses a normal external barrel conector, with a slot in the mwtal casing on each side. A small plastic retainer then slides over the cord and locks in to the slots in the casing holding the power plug in securely.

Mikrotik could use this on all RouterBoards with external PSU's....

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 1:52 am
by nz_monkey
This is my suggested solution
uploadfromtaptalk1354751487867.jpg
uploadfromtaptalk1354751447653.jpg

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 2:57 am
by diegotormes
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.
if the power supply is broken, we must disarm router to change it? the connection with the LCD display makes the work harder!

you should seriously consider a redesign.

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 7:42 am
by normis
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.
if the power supply is broken, we must disarm router to change it? the connection with the LCD display makes the work harder!

you should seriously consider a redesign.
No, open the case and unplug it.

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 5:38 pm
by jp
That's a nice little adapter that would be better than the present choice.

My idea for the ziptie thing based based on something like
http://www.juniper.net/techpubs/softwar ... power.html

http://jason.philbrook.us/~jp/mis/20121205_132731.jpg

shows the cable after removing it from the new rb2011. It's shiny because I wiped any dust off with my greasy fingers. It's slightly abraded brand new; you can see the paint has worn off the striped conductor where it goes through the case slot. I intend to only use these with POE (such as toughswitch or DLI) unless this is changed.

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 6:24 pm
by diegotormes
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.
if the power supply is broken, we must disarm router to change it? the connection with the LCD display makes the work harder!

you should seriously consider a redesign.
No, open the case and unplug it.
is easier said than done, you need a screwdriver, desire and time.

Change the power supply in this router consumes much more time than any other... and you need a tool also.

Now seriously: it is not practical at all!

Re: 2011 power cord retainer

Posted: Thu Dec 06, 2012 7:12 pm
by nest
Even greater fun when the customer rips open the lid with brute force and pulls off the tiny delicate LCD ribbon cable off the LCD. I think the PSU lead is not a good design. I know the business reasoning "make this as cheap as possible, it's a CPE" and "stop the customer from accidentally pulling out the plug by accident" and that then leads to less support calls from idiots who need to plug it back in again.. but, this is not the solution to push the wire through a tight slot in the metal. (In my opinion of course!) There are better ways of doing this that would only push the price up a few cents. One of these would have been much better for a start. http://www.francescoceccarelli.eu/La_Pa ... sacavo.JPG

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 12:08 am
by frankie
Routerboard RB450 and RB450G has two power sockets. One internal and one external. Why on all RB2011 we don't have such? Is that 10cent additional cost is hard to solder into RB2011 board?

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 12:11 am
by InoX
because is a good ideea :lol:

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 10:01 am
by normis
Thank you all for suggestions. In future, we will have something along these lines:
Screen Shot 2012-12-07 at 10.00.14 AM.png

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 4:08 pm
by nest
Hi Normis

So, to clarify, the black circle on the right is the actual physical DC socket mounted on the outside chassis itself or a hole in the chassis through to the inside DC socket on the PCB inside?

Also, the metal clips stamped out of the casing are there to wrap the cable around to reduce the risk of the pulling forces, pulling out the DC cable jack from the DC Socket?

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 10:58 pm
by Basiley
cool news. tnx.
Subj was my biggest concern about original enclosure[aside tickness/strenght of metall and absence(w/o WM kit) W/M holes and funny/weird red color in front]

maybe, before serious board/case re-design something palliative/temprally changed ? for example, making big rounded hole around power cord - allow customers plug-in/plug-out cable w/o opening case and/or replace faulty PSU with functional.

or even simpler - replace single-piece power-cord with [using similar cable]adapter with connector outside, similar to which 2011 had inside. so at least in case of [mecanicallybroken cable, because interaction w/case - customer just replace adapter. but that worser wariant, IMO.

Re: 2011 power cord retainer

Posted: Fri Dec 07, 2012 11:47 pm
by nz_monkey
Normis. That is an improvement but the metal fingers will still eventually wear through the cord.

The clip like I have suggested has no possibility of this happening and it holds the plug in securely.

It also simplifies your die design and can be used across multiple product lines easily. You could even easily add it to RB75x with only minor tooling changes.

Re: 2011 power cord retainer

Posted: Sat Dec 08, 2012 10:00 pm
by Lakis
I still cant understand the design of rb2011
why power jack should be inside the box?

Re: 2011 power cord retainer

Posted: Sun Dec 09, 2012 3:32 pm
by Dobby
Deleted because not related.

Re: 2011 power cord retainer

Posted: Sun Dec 09, 2012 7:29 pm
by Basiley
or simply make hole little bigger, rounded and put short rubber/plastic[elastic]tube over cable here and fix it with[non-permanent/solid]glue/compound.

Re: 2011 power cord retainer

Posted: Tue Dec 11, 2012 5:56 pm
by Bernardo
Rubbing power cord is nearly impossible unless router sits in very shaky environment. And even then it would take a LOT of time to rub through to reach bare wire.
if the power supply is broken, we must disarm router to change it? the connection with the LCD display makes the work harder!

you should seriously consider a redesign.
No, open the case and unplug it.
Have you ever been hanging 30 meters above ground trying to do what you suggest?
Sitting in a comfy chair at your table, it all looks quite easy.
The actual design is bad, no doubts.

saludos
Bernardo

P.S.: and the fix shown isn't any better either.
Please put the plug at the outside of the case, where it should have been from the start.

Re: 2011 power cord retainer

Posted: Tue Dec 11, 2012 7:51 pm
by Dobby
Deleted because not related.

Re: 2011 power cord retainer

Posted: Tue Dec 11, 2012 8:10 pm
by normis
P.S.: and the fix shown isn't any better either.
Please put the plug at the outside of the case, where it should have been from the start.
Did you even see the proposed fix? It has the plug outside the case!

Re: 2011 power cord retainer

Posted: Wed Dec 12, 2012 12:33 am
by Bernardo
P.S.: and the fix shown isn't any better either.
Please put the plug at the outside of the case, where it should have been from the start.
Did you even see the proposed fix? It has the plug outside the case!
Where does it say it is a plug?
All I can see is a hole in the case and a IMHO useless cable retainer.

saludos
Bernardo

Re: 2011 power cord retainer

Posted: Wed Dec 12, 2012 12:43 am
by Bernardo
No hello to you Bernardo also like you was greeting,
Have you ever been hanging 30 meters above ground trying to do what you suggest?
No, why should we do so? The RB2011 series is in my eyes more for Home usage, SOHO usage and/or
for taking some smaller routing or network jobs in smaller and greater companies, but more indoor oriented.
And why the whole router should be mounted in 30 meters high? Does it not be enough to mount the antenna there?
Sitting in a comfy chair at your table, it all looks quite easy.
What do you think, that we are idiots and pull now our comfortable armchairs outside to mount it in 30 meters high?
And by the way who was pressing you to work there?
The actual design is bad, no doubts.
If I am right with my thinking about the indoor usage based up on the indoor case, it is not really the problem, or?
If you mount this case on the wall or place it on the desktop it should not teetering his ass from west to east from alone
the whole day, only to break the cable!!!
P.S.: and the fix shown isn't any better either.
P.S. I was not telling you that you should climb up in 30 meters high, with a hot glue gun!
Please put the plug at the outside of the case, where it should have been from the start.
Ahhh, and now you are suddenly know the magic word (please) and you will be so friendly, cause you want something!
If I am right now even with my thinking, that this device is more made for indoor use and also wall mounting the
power cord isn't able to flip outside by the earth gravity or by them self! So this is perhaps the idea why normis were
setting up the clamps, to hold the cable or let the cable better be fixed.
armes Deutschland
wegen solcher Leute wie dir seid ihr genau da wo ihr heute seid
Hat dir nie einer beigebracht, dass wenn sich Erwachsene unterhalten, kleine Kinder den Mund halten und nicht einfach ungefragt dazwischen babbeln?
Geh zurueck in die Sandkiste aus der du gekrochen bist und spiel weiter.
Ahh, und lass dir dein Lehrgeld zurueckgeben, wenigstens fuer deinen Englischunterricht

saludos
Bernardo

Re: 2011 power cord retainer

Posted: Wed Dec 12, 2012 6:17 am
by Dobby
Deleted because not related.

Re: 2011 power cord retainer

Posted: Wed Dec 12, 2012 10:35 am
by djdrastic
This is a rather big concern for us , as our environment has lots of vibration and shocks and we will be replacing most of the 750G's with 2011's in the coming future.

Re: 2011 power cord retainer

Posted: Wed Dec 12, 2012 4:42 pm
by Basiley
armes Deutschland
wegen solcher Leute wie dir seid ihr genau da wo ihr heute seid
Hat dir nie einer beigebracht, dass wenn sich Erwachsene unterhalten, kleine Kinder den Mund halten und nicht einfach ungefragt dazwischen babbeln?
Geh zurueck in die Sandkiste aus der du gekrochen bist und spiel weiter.
Ahh, und lass dir dein Lehrgeld zurueckgeben, wenigstens fuer deinen Englischunterricht

?
according to Google, that mean:
"poor Germany
because of people like you because you are exactly where you are today
Did you ever a taught that when adults talk, keep small children's mouth and not just babble unasked between?
Go back in the sand box crawled out of the game and you're on.
Ahh, and let them give you back your dues, at least for your English class

saludos
Bernardo
"

Re: 2011 power cord retainer

Posted: Sat Dec 15, 2012 1:58 am
by Lakis
Dude whats so negative with u
as u can read its design for indoor use
Actual design of 2011 - I like it a lot metal box and this one with LCD display its so cool and color red and black best combination I m sure every one will agree
but never the less for us most important is what is inside the box and there MT have a lot to offer - just name one brend that support graphing or can work from 8-30v.....
except for me its not a problem but I cant understated why power input is inside the box

Re: 2011 power cord retainer

Posted: Sat Dec 15, 2012 3:02 am
by patrickmkt
Thank you all for suggestions. In future, we will have something along these lines:
Screen Shot 2012-12-07 at 10.00.14 AM.png
Looks great. Then also please update the power supply with a 90 degree angle plug to avoid a sharp bend on the cable to go back to the grooves and also saving space.

Re: 2011 power cord retainer

Posted: Sun Dec 16, 2012 1:22 pm
by Basiley
probably simplicity of PCB design, ie reduce cost of both creation and manufacturing.
for example, quite old 450g had TWO power sockets for this purpose. one was used for installation in standart encasing, another - for other applications.
for similar reasons, i guess, 2011 was had interfaces around [twin]switch chip[Atheros chips didn't had 5/10 interfaces SoC, i suppose]instead as DIRECTLY-connected CPU[as most expected and how did in CCR].

p.s.
behaving rude/offensive is both bad manners and not works[as expected], usually.
point is: even while understanding emotions, most may suggest keep it lower/shut, probably.

Re: 2011 power cord retainer

Posted: Mon Dec 17, 2012 8:58 am
by normis
Thank you all for suggestions. In future, we will have something along these lines:
Screen Shot 2012-12-07 at 10.00.14 AM.png
Looks great. Then also please update the power supply with a 90 degree angle plug to avoid a sharp bend on the cable to go back to the grooves and also saving space.
that is also planned

Re: 2011 power cord retainer

Posted: Mon Dec 17, 2012 11:20 am
by djdrastic
Normis , any idea timeframe wise when you guys will update the design of the 2011 with the one you have submitted ?

Re: 2011 power cord retainer

Posted: Mon Dec 17, 2012 11:39 am
by normis
It's the next revision design, which is not even in production yet, so hard to say when such devices will reach the end users.

Re: 2011 power cord retainer

Posted: Mon Jan 14, 2013 8:10 pm
by specialist
i solve my power whit this cable !!! and think drill with 1/8" for relax cable movement.

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