How to know the stroke of the metal dome & metal dome array?

November 27th, 2009

How to know the stroke of the metal dome & metal dome array?

There are so many customers to ask this question. I know it is very important for the product design. You should leave the enough space for the metal dome & metal dome array between your PCB & cover layer.

This time follow me to clarify this question, it is very easy for us whom are specializing in this industry for so many years.

For the metal dome, you can see our 6mm diameter, four-leg shape metal dome. The total height is 0.31mm, & the thickness of the material is 0.06mm, so the stroke is 0.31-0.06=0.25mm.

The formula is: Stroke= Height – Thickness of material – Thickness of the dimple (if there is a dimple in center).

Four-leg metal dome

For the four-leg metal domes, the life cycles always have the one million times. & they are popular used in the membrane switche products.

For the metal dome array, you can see the follow picture:

The structure of the Metal dome arrayÂ

You can see the 3# spacer is parallel to the 2# metal dome & the thickness is lower than the domes. So you can ignore the thickness of the spacer. The total height = Mylar + Metal dome=0.05+0.31=0.36mm. For the more detail, you can see my last blog.http://www.metal-domes.com/blog/2009/11/07/the-whole-thickness-of-our-metal-dome-arrays/

How about the stroke? In fact, it is the same as the natural metal domes. It should be ignored the thickness of the Mylar & Spacer. So you can use the above formula to calculate the stroke.

I think you are fully understand the stroke of our metal domes & metal dome arrays now. If you need further & more information, please do feel free to contact us.

Best Technology Co., Ltd

www.metal-domes.com

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The whole thickness of our metal dome arrays.

November 7th, 2009

This time follow me to see the whole thickness of our metal dome array products. We have two types of the metal dome arrays: Single layer & Double layers. Please see the following structure:
  Single layer metal dome array

 Double layers metal dome array

1.For the Single layer structure: the whole thickness is equal to the thickness of the Mylar & metal dome. Normally the thickness of Mylar is 0.05mm.

2. For the Double layers structure: the whole thickness is the same as the Single layer structure. You can see from the picture, it is the double layers, but the spacer is parallel to the metal dome. So that you can ignore its thickness. Normally the thickness of the spacer is 0.075mm.

If there is enough space between your PCB & cover layer by the side of your button, It means over the thickness of the Mylar & Spacer (0.05+0.075=0.125mm), we recommend you to use the most popular double layers structure. Because there have ventilation between the domes, when you press the domes, the air can ran out easily. So it will be better with click feeling.

I think you are fully understand the advantage & disadvantage of the two structures now. For more information, please feel free to contact Best Technology.

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IQC For Metal Domes

October 15th, 2009

Recently, I have found there are so many different names regarding the metal dome. “metal dome”, which we normally called, some called “Snap Dome”, “Tactile Dome”, and “Dome Switches”, and so on. It’s a very interesting phenomenon.
I have checked there is a question everyone should be very concerned about this issue. So I have posted the content of my answer as below, I hope to be helpful for all of you.

A guy in BBS asked “How to solve the following problem?”
1.      What should we pay more attention about the quality of the metal domes?
2.      How can we check?
 ——– The following is my answer.

 Simply speaking, for your IQC department to check the metal domes, they need to note the following points:

 1). Shape (clean, dirt, dust, grease stains & deflashing);

 2). Actuation force (test by force gauge machine);

 3). Contact resistance & stability.

 4) You can press the metal dome for several times to check whether the dome can rebound to original position or not. (the process named as “metal dome rebounding”)
If what you make it metal dome sheets, the following should to be known:
 5) Appearance of PET (clean, dirt, grease stains)
 6) Lose or double metal domes
 7) The location of each dome is the same as the drawing of the PCB
  8) If there is EMI printing, pleas take care of the quality of the tracing
 9) Others, such as location holes, out line, and so on.

For more information, please visit our website:
http://www.metal-domes.com/Quality.htm

Our dust-free workshop make sure the clean of the products. & Our experienced masters & workers with many years fruitful production experience, we have well developed a team of dedicated management and supporting staffs. Our major concern is to produce good quality items.
Our R & D professionals with strong marketing sense and innovative ideas, we will continue to launch numerous trendy array products to meet for customer needs.
Best Technology Co., Ltd., who specializes in manufacturing metal domes & metal dome arrays for more than decade years of experiences, is engaging in offering the best quality & service to all of our customers.

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60 Anniversary & Middle Autumn Festival Holiday Arrangement

September 21st, 2009

Oct 1st will see the 60 year anniversary of PR of China. In the past 60 years, our 60 Anniversaycountry has grown from a new born Children to current lifeful, richful, brightful young guy and will continue to develop, the GDP is keeping more than 8% each year. Although the economical depression since the end of 2008, but in 2009, China is doing very well.

Also the tradtional Chinese Lunar Middle-Autumn Festival will come in on Oct 3rd, 09. It’s the time for people come home and enjoy the happniess with the family & friends. We will eat the moon cake, different area, different taste. If you’re a belly-god, you can enjoy the various moon cake from North to South part of China and I am sure that you’ll never forgot it.

Middle Autumn Festival

So we should have a wonderful holiday, maybe the longest holiday, except Lunar Spring Festival. Follows are our holiday arrangement:

Sep 28th, 09~Sep 30th, 09: Temporary stop accepting new orders, so if you have new orders of metal dome or dome array, please help to place to us early or postpone.

Oct 1st, 09~Oct 6th, 09: All people on vacation, no samples, no production, no shipment,

Oct 7th, 09: Back to normal working time

Wish everybody has a nice day.

Regards,

Best Co., Ltd.

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Four Legs Metal Dome New Trend

March 16th, 2009

On every weekend, we will have a short meeting to check the statistics data of that week and we found out a very obvious trend in the shipment of our Four legs series metal domes, that is: “more smaller size, more high quality requirements, more packing methods”.

There’s a one time, when membrane switches were so hot in the market, the dome used in it was big diameter one such as 12.2mm, 8.4mm etc, and the force were 220gf, 280gf, and 320gf. As the touchscreen technology become popular, it seemed that few and few company used tactile metal domes, all of the guys turn to try the new tech.

In some important section, however, the vital switch have to be avoided of mis-handling by human hand or an incident, and touch screen cannot reach that goal, so tactile dome turn back to the top of desk. As people have gone through the experience of tactile dome and touch screen, they want to strike the right balance. Such being the case, some company designed the dome with smaller diameter with lower force but remain good click feeling, and Four legs series metal domes are the right choice for them.

With its unique structure, Four legs series metal domes can have the best click feeling, and at the same time, we have add several supporting circle in our tooling so that there’re related circles, visible and unvisible, in our goods, to make sure high quality and long life cycles (over 1 million times). Four legs metal domes

There’s a common sense that “the smaller diameter dome is, the more difficult manufacturing will be”. With our special design, our 6mm and 7mm Four legs series metal domes have endure strict testing by our clients. Recently, we have becomed the supplier of metal dome for Emerson. We wish more customers can try our new small size metal domes, and to meet your various requirements.

In next article, we will discuss the requirement of packing method for Four legs series metal domes.

(to be continued)

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Happy Lantern’s Festival and Welcome to Best Technology

February 9th, 2009

Dear friends,

Today is our traditional Lantern Festival (the 15th day of 1st lunar month) in China. Traditionally, people would display various kinds of lanterns, stay together to guess the lantern riddles and eat Tang-yuan (dumplings made of sweet rice, rolled into balls and stuffed with sugar and sesame). In modern times, though the traditional celebration would not be exactly the same as before, people still keep most of the customs. So wish you a cheerful Lantern Festival and enjoy the sweetness of Tang-yuan(*.*)

Meanwhile, kindly note our company has already back to business from our Spring Festival for a week. So, either old customers or new, pls don’t hesitate to contact us for any enquiry or questions. Best Technology are always willing to provide our best service to you!

Sincerely all of us success and health in the New Year of 2009!

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Merry Christmas and Happy New Year for 2008

December 24th, 2008

  xmax.gif BF9A74A6D44F154585392641FEBCB2BF.GIF 20060111022359276.gif

Dear friends:
As the Holiday Season is approaching,
we find ourselves reflecting
on the past year
and on those who have helped
to shape our business
in a most significant way.

For those who have cooperate with us,
and those we lost chance to serve with
or will have chance serving with,
We value our relationship with you
and look forward to working with you again
in the year to come.

Sincerely wish you
a Merry Christmas with your family and friends and
a Happy New Year filled with peace and prosperity!!

Merry Christmas

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BEST Chinese Lunar New Year Holiday Arrangement

December 9th, 2008

As the Chinese Lunar New Year will come soon, everyone will back home and enjoy the happy time with family and friends. As usual, Best Technology will close our facilities(including manufacturing) over the upcoming holidays. We will closed from January 16, 2009 to February 1, 2009 and re-open on Monday, February 2, 2009.

So we recommend our customers to plan orders with this in mind to ensure timely delivery and make sure has enough stock at your side. You can go ahead, or postpone your order. Please feel free to contact us at +86-769-8169 4901, or sales@metal-domes.com with any questions.

We wish you and your family a wonderfuly holiday season and we thank you for your continued supporting, and hope your business will become better and better in new year 2009.

Respectfully Yours,

Peter Gui,

Sales & Marketing Manager,

BEST, always be your best choice of metal dome and dome array in China

http://www.metal-domes.com

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Brand-new Four-leg Domes in 8mm

November 15th, 2008

Hi, dear friends! Rory here would bring you a brand-new diameter of our four-leg domes, it is in 8mm! Just follow me, I’ll show you the parameters of them! 

Before the exhibition of the newly developed 8mm four-leg domes, let’s have a review of the usual ones in 8.4mm, 10mm and 12.2mm: 

3.jpg  Four legs.jpg

Then, pls view the single and bulk pictures of 8mm four-leg domes as followed: 

single_view_8mm_Four_Legs_Dome_s_web.jpg  8mm_Four_Legs_Dome.jpg

Here comes the diameter measure picture of 8mm four-leg metal dome: 

8mm_Four_Legs_Dome_1s_web_measure.jpg  8mm_Four_Legs_Dome_1s_web_s.jpg

After the exhibition of above pictures, our 8mm four-leg domes must leave a deep impression on you! So don’t hesitate to contact us if you need our products or have other questions! 

Best Technology, providing best products with best service in best price, would always be around you! 

 

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One-Key Dome Array: Single Metal Dome with adhesive PET

October 18th, 2008

Hi, welcome to Best Technology again! Last time we have introduced our lacer cutting technology! Further to that advanced technology, we have dealt with many orders of one-key dome arrays, which are difficult to handle before the adoption of laser cutting machine!

Tracing the days when we have adopted the laser cutting machines, we have lost many orders for the one-key dome arrays! On the other hand, we cannot meet to our customer requirements for dealing the single metal dome with adhesive array without setting up a tooling!

As we all know, a set of tooling would cost an amount of tooling fee. Considering the quantity not large enough, as well as price relatively high with tooling fee, many customers refuse to give orders to us. We also felt sorry for not able to serve with our customers and never give up searching the best way to work out this problem!Â

Finally our efforts are paid off! Now we can deal with any order of one-key dome array. The adhesive array size would be a bit larger than the dome size, so that customers can easily stick the single dome onto PCB or any place they want put to.

Followed is one of the drawings for 8.4mm four-leg dome array:

Peeled Off Kiss Cut Metal Dome Array

Peeled Off Kiss Cut Metal Dome Array

Of course we can do any size as per customers requirements! For instance, we have dealt with one case, where our customer demanded limited space for adhesive PET (like 8*8mm) of 6mm circle metal dome.

Usually we would do the PET size of 10*10mm for 6mm domes; in this case, we finally work out by the size of 8*10mm, so that the array would not only surpass the limited space, but also functions well sticking to the board! Hereby are some pictures of goods we have made:

Single Key Four-leg Metal Dome Array

Welcome to any order of One-Key Dome Array from Best Technology! We can make most tapes of metal dome in different size and shape.

Seemed interested? I think it will save a lot of time for you to assemble bulk metal dome using a adhesive tape at your side. This is what we want, to save time and increase efficiency of assembly.

Any question? Please leave your message or contact us todayd for single key metal dome array now!

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