It looks to be marked PB775B01M20-R Revision 0, dated 3rd August 2010 (a while back) but made Week 38 of 2013. The main PCB isn’t adorned with much components, and is a simple single-sided board. I never knew there was a whole motor market for air fresheners! Simplicity! Here, I actually ran it without any gear in the middle, but it still happily spun away.Ī closer examination of the motor shows it’s a Techni Micro Motor, likely an RT-310P (2.5v nominal, 2200rpm/0.06A/0.072W), which strangely enough is stated on their product information page as being targeted to products including air fresheners. It literally runs the motor forward for a given time, letting the gearing hit the limit stop, then runs it in reverse for a given time, until it hits the other limit stop. This makes the system remarkably simple – it’s actually free of any feedback on this end. There are two limit stop posts, which limits the travel of the sector shaped gear, and by extension, the amount of pull-down the nozzle piece has. Removing the middle reduction gear “breaks” the chain of processes, and allows you to see how the sector-shaped gear works. the big white geared wheels) which then drive a sector-shaped gear which helps to convert the rotational motion into linear motion, pulling down on the plastic nozzle piece and then returning it to its original position. This drives two reduction gears in sequence (i.e. ![]() The motor is on the left, coated in lubricant. The internal unit is held together with four screws. It seems the internal section of the unit is marked much the same as the outside, with FCC and CE approval markings. It’s also been removed from the rear plastic shell. This is how the unit looks like after being de-populated of batteries and refill canister. It, instead, seems likely that the canister was not fully pushed in or aligned with the nozzle shown above, instead resulting in the ejected liquid collecting in the plastic nozzle piece and eventually dripping to the bottom of the mechanism. Some users have complained of leaks at the base of the sprayer, which seems rather unlikely as it is a pressurized spray canister. The canister is installed into the unit simply by pushing it into place, and is removed with the skin-coloured plastic pull-tab. The canister isn’t particularly big either. This simplifies the timing of the mechanism quite a bit, but might increase the cost of the canisters themselves. The plastic nib at the top is depressed to release a specific dose of the liquid inside, in a similar way to asthma inhalers. Aside from the fact it is marketed as Forbidden Berry in Australia and New Zealand, and Winter Romance Berry in Japan, the unit is a special dosed canister arrangement. The canister itself deserves special mention. The unit is supplied with two Hi-Watt ER6X Super Heavy Duty carbon-zinc cells. The unit itself has the front panel push button for an immediate spray (termed boost), with a translucent white plastic for the LED to shine through, and a hole for the sensor. This suggests the different exterior coverings share a common internal unit. This is hinged at the top where the nozzle is, and clips into the rear brown segment. Inside, we see the main unit, which is the white plastic section. As you can see from the design of the base, the unit hinges open by pushing on the sides. ![]() It is likely the internals are very similar. There are numerous variations of this unit, some of the same size with different plastic exterior. Johnson and Son is probably the parent company, with this unit designated model number SCJ-158. The bottom of the unit shows the identification marks – S.C. The top of it contains a very small tapered hole, no doubt a nozzle that helps to further atomize the spray from the refill. It is adorned by curves, with a tapered top.Ī look at the tapered top shows a hole where the inner mechanism shows through. The exterior of the unit is brown, with speckles, a sort of poor wood imitation that reminds me of tupperware. Let the teardown begin! What is it made of? What’s inside? How does it work? These are merely some of the questions I had. But it does seem rather amazing that such a product is in the consumer market. Having tried mine, and emptied the refill, I figured it wasn’t really my thing. This rather interesting device claims to have “motion sensor technology”, featuring a small refill that lasts about a month. As a part of a sampling “club”, a while back, I received a Glade Sense and Spray Automatic Air Freshener. ![]() Sometimes, it seems the posts around here have no rhyme or reason, and that’s exactly the way I like it.
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