Motor drive device for opening and closing a swing gate or swing door in the radial direction.
The gear motor-driven radial movement system with a secure, enclosed design addresses space and security issues in swing gates or doors, ensuring efficient and controlled operation.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-02-03
- Publication Date
- 2026-03-19
AI Technical Summary
Existing gate and door opening systems face challenges such as space constraints, slow operation speeds, difficulty in controlling final positions, and security vulnerabilities, particularly in installations requiring non-linear movement and environments prone to debris accumulation.
A motor-driven system using a gear motor with a radial movement mechanism, incorporating a pillar with multiple bushings and a tensioning system, allowing for manual operation during power failures, and featuring a secure, enclosed design with multiple mounting points.
Enables efficient, secure, and space-efficient operation of swing gates or doors within a 180° range, overcoming space limitations and providing reliable control and security against theft.
Smart Images

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Abstract
Description
Technical Field
[0001] This device is one that can automatically open a swing gate or swing door by a gear motor driven in the radial direction, and can rotate the end attached to the pillar of the door body around the axis of the pillar. This system can be manually operated by any remote system such as a remote control or a mobile phone, or a switch with a push button or numeric keys.
[0002] Specifically, a pinion mounted on the shaft of the gear motor drives a special toothed bush. This gear motor is fixed to a common pillar on which a tensioner bush and a lower bush are also mounted, and these bushes can rotate around their own axes to open and close the door body of the gate or door within a range of up to 180°.
[0003] The gear motor is mounted with a support system that can release the traction between the pinions during a power failure so that it can be opened by hand.
[0004] The present application aims to provide a motor-driven opening and closing device for a gate or door that swings in the radial direction.
[0005] Specifically, this device is one that can automatically open a swing gate or swing door by a gear motor driven in the radial direction, and can rotate the end attached to the pillar of the door body around the axis of the pillar. This system can be manually operated by any remote system such as a remote control or a mobile phone, or a switch with a push button or numeric keys. In any case, a desired opening ratio within the range of 0 to 180° is set by a limit switch.
Background Art
[0006] Currently, various devices for automatically opening swing gates or swing doors are available on the market. Such devices can open swing gates using fluid pressure or mechanical rack-based systems. [Overview of the project] [Problems that the invention aims to solve]
[0007] Since both systems operate linearly, their installation requires specific parameters, which severely limits space requirements.
[0008] In addition to space constraints, such linear devices operate at extremely slow speeds, resulting in significant time lags when opening and closing gates or doors.
[0009] Another drawback is the difficulty in controlling the final position of the gate or door when opening and closing it, and we have received a lot of user feedback regarding this issue.
[0010] Another system on the market is a sliding system in which the door body moves straight along a rail, and an electric motor transmits energy to drive the gate by connecting a pinion to a rack attached to the gate body.
[0011] This is the most common system, but it also requires lateral space to move the gate when opening. Another drawback is that although it relies on rails installed on the floor to guide the gate, debris can accumulate on the floor, making operation difficult. Moreover, the ground must be flat for the gate to close properly; otherwise, depressions will form where rainwater can accumulate, making passage difficult. [Means for solving the problem]
[0012] This invention proposes a solution based on providing an alternative means for situations where there is insufficient space to install a sliding gate, or where the parameters and lengths required for installing a linear swing gate system of the fluid pressure or mechanical type are not met.
[0013] Another solution involves installing the system at entrances with different heights and separate horizontal planes on either side of the road. This system can also extend the door length up to 6 meters in width, thanks to a tensioning system that holds the door in place during the opening and closing process.
[0014] This device also offers security advantages. Sliding gates are known to be extremely easy to dismantle and therefore susceptible to theft. The solution provided here satisfies security requirements because cutting the pillar (which is entirely enclosed by a bushing system) would require an angle grinder. Furthermore, it features an upper tensioner and allows for multiple mounting points throughout the entire structure. [Brief explanation of the drawing]
[0015] [Figure 1] This is a front view of the entire present invention (details of each part are shown in the diagram below). [Figure 2] This figure shows detail A of Figure 1 (showing the drive system (3), hub support (11), and upper tensioner hub (13)). [Figure 3] This figure shows detail B of Figure 1 (the lower hub (9) overlaps with the hub support (11) and is connected to the gate or door body (1), and is all attached to the pillar (2), and the pillar (2) is fixed to a concrete base). [Figure 4]This figure shows detail A of Figure 1 (you can see the drive system in which the motor's pinion (6) meshes with the upper drive hub (5), and the upper drive hub (5) supports the gate or door body (1). The gear motor is mounted by a movable support system (4), which uses guides, springs, and threads, and by using a small crank, it is possible to release the traction between the gears and move it away from the upper hub gear. This allows the gate to be moved by hand in the event of a power failure. Several clamps are mounted, all of which are fixed to the pillar (2)). [Modes for carrying out the invention]
[0016] This device incorporates a pillar (2) fitted with multiple bushings having perforated fins, and the pillar (2) is configured to support the weight of the door or gate body (1) to be automated. A gear that moves radially is fixed to one of the bushings by a drive system (3) consisting of a gear motor with a gear on an output shaft. The drive system (3) is mounted to a support by a guide and spring system (4), and by rotating it with a small crank, the gear motor can be moved away from the pillar. In the event of a power failure, this releases the traction between the two gears, allowing for manual opening. Both are attached to a common pillar (2) that supports the door body.
[0017] The drive system (3) is controlled by an electronic circuit board equipped with various relays that enable opening and closing of the door or gate via remote control, switch, or mobile phone. The opening angle is set within the range of 0 to 180° by an opening limit switch. This mechanical system can be manufactured with various capacities depending on the needs and dimensions of the application. The pillar (2) may be installed on a concrete base (10) or bolted to an existing pavement. After the pillar (2) is fixed, the following components are installed in sequence: 1. Lower support bush (11) consisting of a ring-shaped body welded to the pillar via a hex socket head bolt; 2. The lower bush (9) installed on the support ring (the bush is equipped with a lubricant distribution groove and a grease nipple to facilitate the process); 3. A dust cover consisting of a rubber ring that prevents grease contamination from dust and protects the connection from rain; 4. An upper support bush (11) that performs the same function as the lower support bush; 5. Upper drive hub (5) which has the special feature of having a gear machined into its upper part and transmits the folding motion of the gate door body; 6. Dust cover; 7. A drive system (3) or drive hinge in which a metal base is attached to the pillar by a clamp (the gear motor is mounted on the base (4) with its output shaft facing vertically downward and the gear (6) is mounted so as to mesh with the upper drive bush (5). The motor is fitted with the electronic circuit board that controls the system by various devices); 8. A third upper tensioner bush (13) is installed at the upper end of the pillar, which has a support that holds the weight of the gate door body (1) via a tensioner (8) from the tip of the gate door body (1); 9. After these mechanical components are installed, the gate or door body (1) is installed. The door body may be made of iron or wood, according to the user's preference. The door body may be bolted in place or simply welded to bushings. 10. The end opposite to the pillar is provided with a closing pillar (12) on which an electric lock and stopper are installed, which can position the door body in a closed position.
Claims
1. A motor drive device that operates in a radial direction to open and close a swing gate or swing door, characterized in that an electric gear motor (3) is installed on the main pillar (2) above the swing gate (or swing door) and fixed with a clamp so as not to obstruct the opening and closing of the swing gate (or swing door).
2. The motor drive device for opening and closing a swing gate or swing door by radial movement as described in claim 1, characterized in that the main pillar (2) simultaneously functions as the pivot axis for a common component, which in this claim functions as part of a swing-type door body (1), a drive hub (5), a lower hub (9), and a tensioner hub (13), and the gate (or door) is driven by the gear motor meshing with the drive hub to open to an angle of up to 180° (or more if necessary), and the gate (or door) is opened and closed at a constant speed in an extremely stable cantilevered state.
3. A motor drive device for opening and closing a swing gate or swing door by radial movement, as described in claim 1 or 2, characterized in that the upper drive hub (5) is equipped with a circular gear machined to have teeth necessary to achieve an opening angle of 0 to 180°, the circular gear is mounted on the main pillar (2) together with the lower hub (9) and the upper hub (13) of the tensioner, and the above hubs surround the diameter of the main pillar and have a space for uniformly distributing grease to lubricate the contact points between the main pillar and the hubs.
4. A motor drive device for opening and closing a swing gate or swing door by radial movement, as described in claim 1, 2, or 3, characterized in that the support (4) is equipped with a system that allows the electric gear motor (3) to be moved away from the upper drive support (5), and the gate can be opened manually in the event of a power supply failure.
5. A motor drive device for opening and closing a swing gate or swing door by radial movement, as described in claim 2 or 3, characterized in that the upper tensioning bush (13) is installed on the upper part of the main pillar (2), the upper tensioning bush (13) is connected to the tip of the swing-type door body (1) via an eyebolt and a steel cable (8), and the tensioner reduces the load on the bush, making the opening and closing operation smooth and light on the gear motor.
6. A motor drive device for opening and closing a swing gate or swing door by radial movement, as described in claim 2, 3, or 4, characterized in that it operates by a cantilever support supported only by the main pillar (2) at one end of the entrance, so that the ground below the gate or door does not need to be flat, and it can be installed in unpaved or muddy places without impairing normal operation.
7. A motor drive device for opening and closing a swing gate or swing door by radial movement, as described in claim 1, 2, or 3, wherein the main drive hub (5), the upper tensioning hub (13), and the lower hub (9) are equipped with fins to which the swing-type door body can be attached by bolts or welding of a material and design determined by the user, and the hubs have specially designed flow channels around their periphery to maintain lubrication applied via grease nipples.
8. A motor-driven device that operates radially to open and close a swing gate or swing door, configured for use as a livestock gate, capable of opening from 0 to 180° and allowing the opening to be set according to the direction of movement of livestock.