Semi-hard magnetic core

Abstract

The utility model provides a semi-hard magnetic core which comprises a rectangular magnetic core body, two coil grooves symmetrical about the middle plane of the magnetic core body are formed in the magnetic core body, and the portion, between the two coil grooves, of the magnetic core body is a magnetic core middle part; the flat arrangement of the rectangle determines that the magnetic core can be applied to a compact space, the height of the magnetic core body determines the height of the magnetic core body in the application space, and the magnetic core is particularly suitable for designing a horizontal driving mechanism in a molded case switch; preferably, the magnetic core bodies at the two ends can be clamped in the coil grooves, so that batch connection is achieved, waste of raw materials during machining is avoided, and compared with a cylindrical mechanism, the rectangular structure is more suitable for uniform heat treatment after flattening treatment, and therefore the heat treatment cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of magnetic cores, and particularly relates to a semi-hard magnetic core. Background Art

[0002] A magnetic control switch is a device that uses a magnetic field to control the on / off of a circuit. It usually consists of a magnetic material and a contact. When an external magnetic field acts on the magnetic material, the magnetic field of the magnetic material changes, thereby causing a change in the state of the contact and realizing the on / off control of the circuit. In recent years, due to its rapidity and low power consumption, it has received more and more attention and applications in the distribution network. Most of the magnetic control mechanisms used in magnetic control switches in the prior art are cylindrical. The moving iron core and the static iron core are both cylindrical, and the coil is also cylindrical. This mode occupies a large space inside products with a narrow space, and there will be problems with concentric circle rotation. During processing, a large amount of material waste will be caused due to excessive cutting. For compact products such as plastic shell switches, a magnetic core structure with a small occupied area needs to be developed.

[0003] For example, a magnetic core for a power transformer with the application number CN202221877823.9 discloses a technical solution, including a first magnetic core, a second magnetic core, a first protrusion, a second protrusion, a first cylindrical magnetic rod, and a second cylindrical magnetic rod. The first cylindrical magnetic rod and the second cylindrical magnetic rod are connected by a first limiting device, and the first magnetic core and the second magnetic core are connected by a second limiting device. The first limiting device is used for longitudinally limiting the first magnetic core and the second magnetic core, and the second limiting device is used for restricting the axial rotation of the first magnetic core and the second magnetic core around the first cylindrical magnetic rod or the second cylindrical magnetic rod. Through the first limiting device and the second limiting device, constraints and limits can be imposed on the two butt-jointed first magnetic core and second magnetic core, so that the first magnetic core and the second magnetic core can be quickly positioned after butt-jointing, replacing the pressing molding method, resulting in a high qualification rate of the first magnetic core and the second magnetic core after butt-jointing, not easily generating misalignment, and realizing interchangeability. From the above description and the drawings of this application, it can be seen that the magnetic core of this application is U-shaped, and a cylindrical magnetic rod is arranged inside the magnetic core. Through the connection of the cylindrical magnetic rods, the connection of the two magnetic cores is realized. This structure still has the problem of occupying a large space inside products with a narrow space.

[0004] In summary, a new technical solution is needed to solve the above technical problems. Content of the Utility Model

[0005] This application provides a semi-hard magnetic core, including a rectangular magnetic core body. Two coil slots symmetrical about the middle plane of the magnetic core body are opened on the magnetic core body, and the magnetic core body between the two coil slots is the magnetic core middle part.

[0006] As a preferred solution, a coil skeleton is placed in the coil slot, and a coil is wound in the wire winding slot of the coil skeleton.

[0007] As a preferred solution, the length A of the core body at both ends is equal to the length B of the coil slot.

[0008] The length C of the middle part of the core is equal to twice the length A of the core body.

[0009] As a preferred solution, the material of the core body is semi-hard magnetic.

[0010] As a preferred solution, fixing holes are provided at both ends of the core body.

[0011] As a preferred solution, the semi-hard magnetic core is applied to a plastic shell switch.

[0012] The rectangular and flattened setting of this application determines that it can be applied to a compact space. The height of the core body determines its height in the application space, and it is particularly suitable for designing a horizontal drive mechanism in a plastic shell switch; preferably, in this application, the core bodies at both ends can be clamped in the coil slots, and thus connected in batches, avoiding waste of raw materials during processing. Compared with a cylindrical mechanism, the rectangular and flattened treatment is more suitable for uniform heat treatment, thereby reducing the cost of heat treatment. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of this application;

[0014] Figure 2 is a schematic structural diagram of the coil skeleton of this application;

[0015] Figure 3 is a layout schematic diagram during processing of multiple semi-hard magnetic cores;

[0016] Reference Signs:

[0017] 1. Core body; 2. Coil slot; 3. Middle part of the core; 4. Coil skeleton; 5. Winding slot; 6. Fixing hole. Detailed Description of the Invention

[0018] The following will Figure 1 , Figure 2 , Figure 3 be used to describe in detail the specific embodiments of the present invention. It should be noted that the specific embodiments described herein are only for explaining and understanding the present invention, and are not used to limit the present invention.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", and "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Embodiment 1:

[0022] This embodiment provides a semi-hard magnetic core. When in use, two semi-hard magnetic cores are used in cooperation. One is a moving magnetic core and the other is a static magnetic core. Their structures are the same. The semi-hard magnetic core includes a rectangular core body 1. The material of the core body 1 is semi-hard magnetic. Two coil grooves 2 symmetrical about the middle plane of the core body 1 are provided on the core body 1. The core body 1 between the two coil grooves 2 is the core middle part 3; a coil skeleton 4 is placed in the coil groove 2, and a coil (not shown in the figure) is wound in the winding groove 5 of the coil skeleton 4; the semi-hard magnetic core of this embodiment is mainly applied to plastic shell switches; fixing holes 6 are provided at both ends of the core body 1, and the application is fixed in the environment where it is used through the fixing holes 6; in this embodiment, the core body 1 is set in a rectangular and flattened shape, which determines that it can be applied to a compact space. The height of the core body 1 determines its height in the application space, and it is especially suitable for designing a horizontal driving mechanism in plastic shell switches; compared with a cylindrical mechanism, the rectangular flattened treatment is more suitable for uniform heat treatment, thereby reducing the cost of heat treatment.

[0023] Embodiment 2:

[0024] In this embodiment, waste of raw materials during processing can be avoided. Specifically:

[0025] The length A of the core body 1 at both ends is equal to the length B of the coil groove 2, and the length C of the core middle part 3 is equal to 2 times the length A of the core body 1; as Figure 3As shown, the two-end core body 1 of the present application can be snap-fitted into the coil slot 2. In this way, they are connected in batches, avoiding waste of raw materials during processing. The principle is that when processing the coil slot 2, the material dug out can be used as the core body 1 of the next core. Compared with circular cutting processing, it can avoid waste of materials, save processing materials, and thus reduce the overall material cost.

[0026] In summary, due to the adoption of the above technical solution, the rectangular and flattened setting of the present application determines that it can be applied to compact spaces. The height of the core body determines its height in the application space, and it is particularly suitable for designing a horizontal drive mechanism in a plastic shell switch. Preferably, the two-end core body in the present application can be snap-fitted into the coil slot. In this way, they are connected in batches, avoiding waste of raw materials during processing. After the rectangular shape is flattened, it is more suitable for uniform heat treatment compared to a cylindrical mechanism, thus reducing the cost of heat treatment.

[0027] In the specification provided by the present utility model, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0028] Similarly, it should be understood that, in order to streamline the present disclosure and help understand one or more of the various aspects of the utility model, in the above description of the exemplary embodiments of the utility model, the various features of the utility model are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting the intention that the claimed utility model requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the aspects of the utility model lie in less than all the features of the single embodiments disclosed above. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate embodiment of the present utility model.

[0029] In addition, those skilled in the art can understand that, although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0030] It should be noted that the above embodiments are illustrative of the present utility model rather than restrictive thereof, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

[0031] At this point, those skilled in the art should recognize that although numerous exemplary embodiments of the present utility model have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present utility model can still be directly determined or derived from the disclosed content of the present utility model without departing from the spirit and scope of the present utility model. Therefore, the scope of the present utility model should be understood and recognized as covering all such other variations or modifications.

[0032] The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple variations can be made to the technical solutions of the present application, and these simple variations all fall within the protection scope of the present application.

[0033] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, various possible combination methods of the present application will not be described separately.

[0034] Furthermore, any combination can be made among the various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the disclosed content of the present application.

Claims

1. A semi-hard magnetic core, characterized in that: The invention comprises a rectangular magnetic core body (1), wherein the magnetic core body (1) is provided with two coil slots (2) symmetrical about the middle plane of the magnetic core body (1), and the magnetic core body (1) between the two coil slots (2) is the magnetic core middle part (3).

2. A semi-hard magnetic core according to claim 1, characterized in that: A coil frame (4) is placed in the coil slot (2), and a coil is wound in the winding slot (5) of the coil frame (4).

3. A semi-hard magnetic core according to claim 1, characterized in that: The length A of the magnetic core bodies (1) at both ends is equal to the length B of the coil slots (2).

4. A semi-hard magnetic core according to claim 3, characterized in that: The length C of the middle part (3) of the magnetic core is equal to twice the length A of the magnetic core body (1).

5. A semi-hard magnetic core according to claim 1, characterized in that: The material of the magnetic core body (1) is semi-hard magnetic.

6. A semi-hard magnetic core according to claim 1, characterized in that: Fixing holes (6) are provided at both ends of the magnetic core body (1).

7. A semi-hard magnetic core according to any one of claims 1 to 6, characterized in that: The semi-hard magnetic core is used in a molded case switch.

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