Increased number of adoptions: compact reduction gears, winches, and rack jacks capable of load retention.
Self-locking winches, rack jacks, and reducers are widely used in various devices and fixtures. The key factors are lightweight, smart, and compact!
We have developed numerous applied products equipped with a unique load-holding function (Shoji-lock) that have received positive feedback from our customers. (Patents obtained both domestically and internationally) <Shoji-lock Product Features> - 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. Additionally, while the worm has input and output axes that are perpendicular to each other, our design has the input and output shafts aligned in a straight line (in-line), making it quite compact and allowing for space-saving and weight reduction. - Unlike ratchets or one-way clutches, it can hold a load at any position when motion is stopped, regardless of the direction of rotation. Furthermore, there is no ratchet noise, making it suitable for use in quiet environments. - It features a basic sealed structure (IP65) and is maintenance-free. - We offer a variety of applied products, including gear reducers that utilize this self-locking mechanism, winches, and linear actuators (rack jacks). *For more details, please visit our official website or feel free to contact us.
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basic information
<Inline Reducer = S Reducer> - Higher efficiency compared to worm reducers - Much more compact design and lightweight compared to large worm gears - Lineup of manual models compatible with SRM 5 to 100 kgm - Lineup of electric models compatible with 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 lock and release function for quick wire release - Lineup of manual models compatible with SWM loads of 50 to 300 kg - Lineup of electric (tool) models compatible with SWE loads of 50 to 300 kg - Motor built-in type SWP is also available <Rack Jack = S Linear Actuator> - Raises and lowers a round rack bar and holds the load in place - Additional guide rods can be added in case buckling is a concern - Lineup of manual models compatible with SLM loads of 50 to 200 kg - Lineup of electric models compatible with SLE loads of 100 to 800 kg
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Applications/Examples of results
Winches (hoisting machines) can be operated manually or with an electric screwdriver even in places without power, making them useful during disasters! (For example: transporting goods to upper floors of a building where the elevator is broken.) We also offer a rust-free stainless steel type! Gear reducers are widely adopted in factory lines as tilting and reversing devices and jigs. They are ideal for tasks performed in a tilted position! The inline design allows for a compact configuration. The "shoji-lock" that stops movement holds the load at the desired position with an absolute stop. It assists in this fundamental operation of not only transmitting power but also holding the load. On land... for automotive 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, power line repair work, and high-rise building cleaning gondolas. They are used in various situations for a wide range of applications. In particular, stainless steel and aluminum products designed for clean rooms are widely adopted in the semiconductor industry. *For more details, please refer to our case studies and website.
Detailed information
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SLW Series: A specification that combines our winch and rack jack. The rack rod rises and falls by 11.5 mm per rotation, and of course, it holds the load even when the operation stops. Compact and versatile!
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SRM Series As shown in the image, it is adopted in the tilting and reversing device. It holds the load in place (self-locking) when tilted, and is very compact, which has received positive feedback.
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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 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 treatment) for weight reduction and rust prevention.
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Special Product Case 3 Achievements with a semiconductor equipment manufacturer. It is possible to produce a specification where the load is wound up with a belt instead of a wire, made entirely of aluminum (A7075), as shown in the photo.
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Case Study 4: Special Products Medical-related achievements. This type uses fine strings to lift the load instead of wires. The photo shows a steel product treated with electroless nickel, which can be finished more cheaply than all stainless steel or aluminum.
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Special Product Case 5 Our lineup includes the SRM-005-11, a compact inline reducer made entirely of stainless steel. The input and output shafts are neither orthogonal nor offset; they are aligned in a straight line, yet it self-locks, making it very compact. It is especially recommended for tilting devices and similar applications.
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Special Product Example 6 We have added guide rods to our lineup SLM-050-4.0 small rack jack, creating a twin shaft to address buckling and other issues. As shown in the photo, flanges can also be attached and manufactured at both ends. Please compare it to a cigarette. It is very compact.
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Special Product Example 7 The SLM-D type, which responds to the request to "raise and lower two rack rods simultaneously" in the SLM series. By connecting two rack jacks with a connecting pipe, it is possible to synchronize the two rack rods. Of course, it comes with a load-holding function and allows for a quite compact design.
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Company information
The load-holding function equipped reduction mechanism (shoji-lock) has been developed for application 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, our design features them in a straight line (inline), allowing for a compact design and space-saving, which has received high praise and resulted 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 overseas parts procurement business, beginning with Vietnam. Currently, a majority of our parts are procured overseas, and leveraging our achievements and network, we aim to assist companies struggling with cost reduction in parts procurement.