【Basic structure diagram included】A completely new self-locking reduction mechanism using spur gears.
Introducing a lineup of gear reducers, rack jacks, and winches equipped with a new self-locking mechanism!
We have developed numerous applied products equipped with a unique position-holding function (shoji-lock) that have been well received by our customers. (Patents obtained both domestically and internationally) <Features of shoji-lock products> - When rotation is applied from the input side, the output side decelerates and transmits power, but rotation is not possible from the output side = self-locking function. This means that it can hold a load at the desired position without the need for brakes. - Compared to worm gear reducers with the same self-locking function, it is highly efficient. Furthermore, while worms have input and output axes that are orthogonal, our design uses spur gears, allowing the input and output shafts to be in a straight line (in-line), making it quite compact and space-saving, as well as lightweight. - Unlike ratchets or one-way clutches, it can hold a load at any position where motion is stopped, regardless of the direction of rotation. Additionally, there is no ratchet noise, making it suitable for use in quiet environments. - It has a basic sealed structure (IP65) and is maintenance-free. - We offer a variety of applied products, including reducers that utilize this self-locking mechanism, winches, and linear actuators (rack jacks). We also develop original devices in response to customer requests.
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basic information
<Inline Reducer = S Reducer> - Higher efficiency compared to worm reducers - Significantly more compact design and lightweight compared to large worm types - Lineup of manual models supporting SRM 5 to 100 kgm - Lineup of electric models supporting SRE 3 to 50 kgm <Winch = S Winch> - Load is wound up with a handle and held in place when the handle is released - Unlike a ratchet, it can hold position in both forward and reverse rotation - Can be driven by commercially available electric tools (drill drivers) - Available in a type with a locking and releasing function for quick wire release - Lineup of manual models supporting SWM loads of 50 to 300 kg - Lineup of electric (tool) models supporting SWE loads of 50 to 250 kg - Motor built-in type SWP is also available <Rack Jack = S Linear Actuator> - Raises and holds a round rack rod in place - Additional guide rods can be added in case of buckling concerns - Lineup of manual models supporting SLM loads of 50 to 200 kg - Lineup of electric models supporting SLE loads of 100 to 800 kg * For any special products (high load conditions, all SUS, etc.), please consult us.
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Applications/Examples of results
"Shōji-lock" that stops movement An absolute stop that maintains load at the desired position We assist with this fundamental action of not only transmitting power but also wanting to maintain load. On land... for automobile manufacturing lines, solar panel manufacturing lines, and nuclear power plants At sea... for opening and closing ship steering control panels, for underwater survey retrieval, and for raising and lowering the roofs of houseboats In the air... for maritime rescue, for power line repair work, and for cleaning gondolas of high-rise buildings It is adopted in various situations and for various purposes. *For more details, please refer to the case studies and our website.
Detailed information
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Special Product Case 1 We handle a large number of all-stainless steel products designed for clean rooms, such as those used in semiconductors, medical devices, and food machinery, as well as in marine and oceanic fields. The photo shows an electric tool winch mounted inside a seabed survey buoy. The input shaft is hexagonal, allowing it to be driven with commercially available sockets. By attaching a dedicated manual speed increaser on the opposite side of the input shaft, it becomes a hybrid type that can be quickly wound manually.
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Case Study 2 of Special Products Even with inexpensive induction motors, there are many cases where they can self-lock without the need for brakes, or are used in combination with brake-equipped motors for double safety. The photo shows an aluminum construction (A7075, black anodized finish) for weight reduction and rust prevention.
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Company information
The load-holding function equipped reduction mechanism (shoji-lock) has been developing applied products such as winches and rack jacks since the early 2000s. Steady sales activities have borne fruit, and it has begun to be adopted for various applications. Unlike conventional worm reduction gears with self-locking functions where the input and output shafts are orthogonal, this mechanism has them aligned in a straight line (inline), allowing for a compact design and space-saving, which has received high praise, resulting in a diverse range of practical examples. (Patents have been obtained in Japan, the United States, the EU (Germany, France, the UK), China, South Korea, and Taiwan.) Furthermore, starting in April 2023, we launched a new business for overseas parts procurement, beginning with Vietnam. Currently, a majority of our parts are also procured overseas, and we hope to leverage our achievements and network to assist companies struggling with cost reduction in parts procurement.