Increased number of adoptions: compact gear reducers, 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), which have been well received by 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 the 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 the worm has input and output axes that are orthogonal, 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 the load at any position when motion is stopped, regardless of the direction of rotation. Additionally, 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 weight reduction compared to large worm gears - 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 with a locking and releasing function for quick wire release - Lineup of manual models supporting SWM load 50 to 300 kg - Lineup of electric (tool) models supporting SWE load 50 to 300 kg - Motor built-in type SWP is also available <Rack Jack = S Linear Actuator> - Raises and holds the load when the round rack rod is lifted and stopped - Additional guide rods can be added in case buckling is a concern - Lineup of manual models supporting SLM load 50 to 200 kg - Lineup of electric models supporting SLE load 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 suitable for work in tilted positions! The inline design allows for compact construction. The "shoji-lock" that stops movement holds the load at the desired position with an absolute stop. It assists in this fundamental action of not only transmitting power but also holding the 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 investigation 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. Particularly in the semiconductor industry, many stainless steel and aluminum products designed for clean rooms are widely adopted. *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 is stopped. Compact and versatile!
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SRM Series As shown in the image, it is used in tilting and reversing devices. It holds the load in a tilted position (self-locking) 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 suitable 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 installed 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 wound up quickly by hand.
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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 of a semiconductor equipment manufacturer. An all-aluminum (A7075) design is also possible, where a belt is used to lift the load instead of a wire, as shown in the photo.
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Special Product Case 4 Medical-related achievements. This type uses fine strings to lift loads instead of wires. The photo shows a steel product treated with electroless nickel, which can be finished at a lower cost than all stainless steel or aluminum.
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Special Product Example 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 Case 6 We have added guide rods to our lineup SLM-050-4.0 small rack jack, creating a twin shaft to address issues such as buckling. 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 Case 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 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.