Proximity switch magnetic core

Abstract

The utility model discloses a proximity switch magnetic core which comprises a round cake base and a cylindrical core, the outer wall of the cylindrical core is used for winding a coil, the cylindrical core is arranged on one side of the end face of the round cake base, the round cake base and the cylindrical core are concentric, and the height of the cylindrical core is larger than two times of the height of the round cake base. A concave positioning groove is formed in the end face of the other side of the round cake base, symmetrical semicircular positioning openings are further formed in the two sides of the round cake base, the height of the cylindrical core is two times that of the round cake base, the number of turns of winding coils of the cylindrical core is larger than the number of turns of coils of an existing proximity switch magnetic core, and therefore the magnetic field induction area of the proximity switch can be increased; therefore, the induction sensitivity of the proximity switch is improved.

Description

Technical Field

[0001] This utility model relates to the field of proximity switch magnetic core technology, and in particular to a proximity switch magnetic core. Background Technology

[0002] A proximity switch is a type of switch sensor, also known as a contactless proximity switch, and is an ideal electronic switching sensor. When a metal object approaches the sensing area of ​​the switch, the switch can quickly issue an electrical command without contact, pressure, or sparks, accurately reflecting the position and stroke of the moving mechanism. Current proximity switches sense objects by generating a magnetic field through an internal magnetic core. The structure of the magnetic core is one of the important factors affecting sensitivity. Current research on magnetic core structures is limited. To improve the sensing sensitivity of proximity switches, a new magnetic core for proximity switches has been designed. Utility Model Content

[0003] In view of the shortcomings of existing proximity switch magnetic cores, the purpose of this utility model is to provide a proximity switch magnetic core that has the advantages of improving the sensing sensitivity of proximity switches.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a proximity switch magnetic core, comprising a disc base and a cylindrical core, wherein the outer wall of the cylindrical core is used for winding a coil, the cylindrical core is disposed on one side of the end face of the disc base, the disc base and the cylindrical core are concentric, the height of the cylindrical core is greater than twice the height of the disc base, the other end face of the disc base has a recessed positioning groove, and the disc base also has symmetrically arranged semi-circular positioning openings on both sides;

[0005] Preferably, the height of the cylindrical core is h1, and the diameter of the cylindrical core is d1, wherein h1≥2mm and d1≥2mm;

[0006] Preferably, the height of the disc base is h2, and the diameter of the disc base is d2, wherein h2≥1mm and d2≥5mm;

[0007] Preferably, both the disc base and the cylindrical core are made of magnetic material;

[0008] The beneficial effects of this invention are: since the height of the cylindrical core is twice the height of the disc base, the number of turns of its wound coil is greater than the number of turns of the existing proximity switch magnetic core coil, thereby increasing the magnetic field sensing area of ​​the proximity switch and thus improving the sensing sensitivity of the proximity switch. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural view of the present invention.

[0010] Figure 2 This is a front structural view of the present invention.

[0011] Figure 3 This utility model Figure 2 Cross-sectional structural view along the AA direction. Detailed Implementation

[0012] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0013] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0014] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "equipped with," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] Please see Figures 1 to 3 The embodiments of this utility model include:

[0016] A proximity switch magnetic core includes a disc base 1 and a cylindrical core 2. The outer wall of the cylindrical core 2 is used for winding a coil. The cylindrical core 2 is disposed on one side of the end face of the disc base 1. The disc base 1 and the cylindrical core 2 are concentric. The height of the cylindrical core 2 is more than twice the height of the disc base 1. The other end face of the disc base 1 has a recessed positioning groove 3. The disc base 1 also has symmetrically arranged semi-circular positioning openings 4 on both sides.

[0017] The cylindrical core 2 has a height of h1 and a diameter of d1, where h1 ≥ 2 mm and d1 ≥ 2 mm.

[0018] The height of the disc base 1 is h2, and the diameter of the disc base 1 is d2, wherein h2≥1mm and d2≥5mm;

[0019] Both the disc base 1 and the cylindrical core 2 are made of magnetic materials;

[0020] With the above settings, its specific working principle in actual operation is as follows:

[0021] When the magnetic core is wound around the outer wall of the cylindrical core 2, since the height of the cylindrical core 2 is more than twice the height of the disc base 1, the number of turns of the wound coil is greater than the number of turns of the existing proximity switch magnetic core coil, which can increase the magnetic field sensing area of ​​the proximity switch and thus improve the sensing sensitivity of the proximity switch.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A proximity switch core, characterized in that, It includes a disc base and a cylindrical core. The outer wall of the cylindrical core is used for winding a coil. The cylindrical core is located on one side of the end face of the disc base. The disc base and the cylindrical core are concentric. The height of the cylindrical core is more than twice the height of the disc base. The other end face of the disc base has a recessed positioning groove. The disc base also has symmetrically arranged semi-circular positioning openings on both sides. The cylindrical core has a height of h1 and a diameter of d1, where h1 ≥ 2 mm and d1 ≥ 2 mm. The height of the disc base is h2, and the diameter of the disc base is d2, wherein h2≥1mm and d2≥5mm.

2. The proximity switch core according to claim 1, characterized in that, Both the disc base and the cylindrical core are made of magnetic materials.

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