Repulsive
The semi-repulsive body design with aligned magnetic poles and resin protection addresses weak forces and impact vulnerability, achieving strong forces and improved applicability.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- 原国 理
- Filing Date
- 2025-11-10
- Publication Date
- 2026-06-11
AI Technical Summary
Conventional semi-repulsive bodies face issues with weak attractive forces, vulnerability to external impacts, and difficulty in aligning magnetic poles due to the use of commercially available magnets, leading to poor applicability and exposure.
A semi-repulsive body design with aligned magnetic poles, a diamagnetic plate, and a bent magnetic plate concentrates magnetic field lines for strong attractive forces, uses a commercially available magnet for repulsive force, and is encased in resin for protection.
Generates strong attractive and repulsive forces while protecting the semi-repulsive body from impacts, enhancing its applicability and versatility.
Smart Images

Figure 0003256171000001_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a mechanical device that extracts mechanical driving force from a permanent magnet without input of energy.
Background Art
[0002] Conventional semi-repulsive bodies have a weak attractive force when a permanent magnet approaches, and the magnetic pole directions are not aligned, so their applicability is poor, and they are also vulnerable to external impacts.
Prior Art Documents
Patent Documents
[0003] Utility Model Registration No. 3250399 (U3250399)
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In a conventional semi-repulsive body, the magnetic plate faces the driving permanent magnet in a plane, and thus a strong attractive force cannot be generated with respect to the driving permanent magnet. Also, in the semi-repulsive body, the directions of the two permanent magnets are opposite, but if a commercially available magnet is used as the driving permanent magnet, it is impossible to face the N or S pole surface with a large area, making it difficult to use. Next, the magnetic body, diamagnetic body, and permanent magnet of the semi-repulsive body are exposed and vulnerable to external impacts. The present invention aims to solve this drawback.
Means for Solving the Problems
[0005] [[ID=四十八]] This invention creates a semi-repulsive body (5) with a structure in which two permanent magnets (2) are attached to a single base plate (1) with their magnetic poles aligned, a diamagnetic plate (3) is attached to each of the permanent magnets (2), and a magnetic plate (4) bent in a mountain shape is attached to the base plate (1). When the permanent magnet (6) of the driving unit approaches, magnetic field lines concentrate at the corners of the magnetic plate (4), generating an attractive force. The resistance at closest approach is minimized because the repulsive force of the permanent magnet (2) is neutralized by the diamagnetic material (3). When the semi-repelling body (5) and the permanent magnet (6) separate, a driving force is generated by their mutual repulsive forces. Since the two permanent magnets (2) of the semi-repelling body (5) are oriented in the same direction, if a commercially available magnet is used as the permanent magnet (6) of the driving unit, a strong repulsive force is generated due to the large surface area of the N or S pole. The area around the semi-repelling body (5) is solidified with resin (6). This protects the semi-repelling body from external impacts. [Effects of the Invention]
[0006] A magnetic material bent into a V-shape concentrates the magnetic field lines of a permanent magnet, generating a strong attractive force. When a semi-repulsive body is used in combination with a commercially available magnet, the large surface area of the semi-repulsive body generates a strong repulsive force with the north or south pole surface of the driving permanent magnet. By encasing the semi-rejector in resin, it is protected from external impacts. Additionally, adding mounting holes to the resin increases its versatility. [Brief explanation of the drawing]
[0007] [Figure 1] This is an explanatory diagram of a semi-repulsive body with aligned magnetic poles. [Figure 2] This is an explanatory diagram of the magnetic field when a magnetic material with corners approaches a driving permanent magnet. [Figure 3] This is an explanatory diagram showing the area around the semi-retracting body solidified with resin or similar material. [Modes for carrying out the invention] [Examples]
[0008] Let's explain using Figure 1. A semi-repulsive body (5) is constructed by attaching two permanent magnets (2) with their magnetic poles aligned to a single base plate (1), attaching a diamagnetic plate (3) to each of the permanent magnets (2), and then attaching a magnetic plate (4) bent into a V-shape to the base plate (1). Let's explain using Figure 2. When the permanent magnet (6) of the drive unit approaches, the magnetic field lines concentrate at the corners of the magnetic plate (4), generating an attractive force. At closest approach, the repulsive force of the permanent magnet (2) is neutralized by the diamagnetic material (3), resulting in minimal resistance. When the semi-repulsive body (5) and the permanent magnet (6) separate, a driving force is generated by the repulsive force between them. Since the orientation of the two permanent magnets (2) of the semi-repulsive body (5) is the same, if a commercially available magnet is used as the permanent magnet (6) of the driving body, a strong repulsive force is generated due to the large surface area of the N or S pole. Let's explain using Figure 3. The semi-repelling body (5) is reinforced with resin (6). This protects the semi-repelling body from external impacts. Additionally, mounting holes are added to the resin (6) to increase its versatility. This resolves the aforementioned problems. [Explanation of symbols]
[0010] 1 Base plate 2 permanent magnets 3. Diamagnetic plate 4. A magnetic material bent into a mountain shape. 5 semi-repulsion body 6. Resin with mounting holes
Claims
1. A semi-retractor with a curved, mountain-shaped magnetic plate attached.
2. A semi-repulsive body with two permanent magnets aligned in the same direction.
3. A semi-retractable body with mounting holes, encased in resin.