Combined magnet for magnetically controlled switch

Abstract

The utility model discloses a combined magnet for a magnetically controlled switch, and relates to the technical field of magnetically controlled switch magnets. And the two neodymium-iron-boron magnets are respectively positioned at two ends of the ferromagnet. Compared with a single aluminum-nickel-cobalt magnet in the prior art, the cost performance is better; in addition, demagnetization is not prone to occurring, and the long-term stability is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetron switch magnet technology field especially relates to a combination magnet for magnetron switch. BACKGROUND

[0002] The core of magnetron switch is through the action of the internal mechanical or electronic structure triggered by magnetic field, thereby realizing the on-off of circuit. It is mainly divided into following two kinds: Reed switch: it is composed of two magnetic reed in sealed glass tube, when there is external magnetic field (such as magnet is close), reed magnetization and contact and is conducted, and reed bounces back and is disconnected after the disappearance of magnetic field. Hall effect switch: utilize the hall effect of semiconductor material, when magnetic field is close, voltage signal is produced, and electronic switch action (need external power supply) is triggered.

[0003] The magnet of magnetron switch in the prior art is aluminum-nickel-cobalt, and the cost is higher. UTILITY MODEL CONTENT

[0004] In order to solve the prior art problems, the utility model provides a combination magnet for magnetron switch, which comprises:

[0005] Ferromagnetic body;

[0006] Two neodymium-iron-boron magnets are respectively located at two ends of the ferromagnetic body.

[0007] Further, the diameter of the ferromagnetic body is 9.5mm, and the length is 54mm.

[0008] Further, the diameter of the neodymium-iron-boron magnet is 9.5mm, and the length is 8mm.

[0009] Further, it further comprises:

[0010] The upper shell and the lower shell are butted, and the ferromagnetic body and the neodymium-iron-boron magnet are located in the upper shell and the lower shell.

[0011] Further, the lower shell comprises:

[0012] The lower connecting plate is provided with a lug at both ends;

[0013] The installation warehouse body is connected at the top of the lower connecting plate, and the ferromagnetic body and the neodymium-iron-boron magnet are installed in the installation warehouse body;

[0014] The upper shell comprises:

[0015] Upper connecting plate;

[0016] Two clamping plates are vertically connected at both ends of the upper connecting plate respectively, and the clamping plate is provided with a jack on it.

[0017] When the upper shell and the lower shell are butted, the upper connecting plate is located at the opening of the installation bin body, and the convex block is located in the insertion hole.

[0018] Further, the length of the lower connecting plate is longer than the length of the installation bin body, and the length of the upper connecting plate is the same as the length of the lower connecting plate.

[0019] The part of the lower connecting plate which is longer than the installation bin body is provided with a mounting hole.

[0020] Further, the opposite two side walls of the end of the upper connecting plate are connected with sealing plates, and when the upper shell and the lower shell are butted, the sealing plates are located at the part of the lower connecting plate which is longer than the installation bin body.

[0021] The beneficial effects of the technical scheme provided by the utility model are: in the utility model, the magnet of the magnetic control switch is one ferromagnetic body and two neodymium-iron-boron magnets, compared with the single aluminum-nickel-cobalt magnet in the prior art, the cost performance is more superior; and, demagnetization is less likely to occur, and long-term stability is more superior. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of a combined magnet for a magnetic control switch provided by the utility model;

[0023] Figure 2 is a structural schematic view of a ferromagnetic body and two neodymium-iron-boron magnets provided by the utility model;

[0024] Figure 3 is a structural schematic view of a lower shell provided by the utility model;

[0025] Figure 4 is a structural schematic view of an upper shell provided by the utility model;

[0026] Figure 5 is a connection schematic view of a ferromagnetic body and a neodymium-iron-boron magnet and an installation bin body provided by the utility model;

[0027] Figure 6 is a connection schematic view of an upper shell and a lower shell provided by the utility model.

[0028] Reference signs: 1-ferromagnetic body; 2-neodymium-iron-boron magnet; 3-lower connecting plate; 4-convex block; 5-installation bin body; 6-upper connecting plate; 7-clamping plate; 8-insertion hole; 9-mounting hole; 10-sealing plate; 11-side plate; 12-butting groove; 13-butting plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0030] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0031] It should be noted that, in the present embodiment, the directions or position relationships indicated by "bottom", "top", "left", "right" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the present application.

[0032] It should also be noted that, in the present embodiment, unless otherwise explicitly specified and limited, the terms "arranged", "connected" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] Referring to Figures 1-6 A combined magnet for a magnetron switch comprises a ferromagnetic body 1 and two neodymium-iron-boron magnets 2, and the two neodymium-iron-boron magnets 2 are respectively located at two ends of the ferromagnetic body 1.

[0034] The diameter of the ferromagnetic body 1 is 9.5 mm, the length is 54 mm, the diameter of the neodymium-iron-boron magnet 2 is 9.5 mm, and the length is 8 mm.

[0035] It should be noted that the magnet in the prior art is a single alnico magnet, with a diameter of 9.5 mm, a length of 70 mm, and a specific gravity of 7.3 g / cm 3 , about 36 g, and a finished product of about 6.5 yuan. In the present embodiment, two neodymium-iron-boron magnets with a diameter of 9.5 mm and a length of 8 mm are used, with a total weight of 10.8 g, and a finished product of about 2.1 yuan. The intermediate industrial pure iron has a diameter of 9.5 mm and a length of 54 mm, with a finished product of about 36 g and a finished product of about 0.3 yuan. Through the combination of "neodymium-iron-boron + industrial pure iron", the total cost is about 2.4 yuan, the magnetic function is the same, and the cost is reduced by about 4 yuan.

[0036] Therefore, the "neodymium iron boron + industrial pure iron" combination in the embodiment has better cost performance, and the neodymium iron boron is only required in a small amount at two ends, and the low-cost industrial pure iron is filled in the middle, so that the amount of rare earth materials is reduced, and the performance and economy are considered.

[0037] In addition, the product name of the aluminum-nickel-cobalt magnet in the prior art is LNG52, the diameter is 9.5 mm, the length is 70 mm, the (BH)m is 60 J / m 3 (7.5 MGOe), and the magnetic flux is greater than or equal to 380 mWb; the product name of the neodymium iron boron magnet in the utility model can be N38H, the (BH)m is 300 J / m 3 (38 MGOe), and the magnetic flux is greater than or equal to 380 mWb.

[0038] The magnetic energy product of N38H is more than 5 times that of LNG52, and N38H is not easy to demagnetize and has stable performance, so that the same magnetic flux can greatly reduce the use of materials, and the cost is reduced. Therefore, the "neodymium iron boron + industrial pure iron" combination in the utility model is not easy to demagnetize, and has better long-term stability.

[0039] Further, in order to install the neodymium iron boron magnet 2 and the ferromagnetic body 1, an upper shell and a lower shell are further arranged, the upper shell and the lower shell are butted, and the ferromagnetic body 1 and the neodymium iron boron magnet 2 are located in the upper shell and the lower shell.

[0040] The material of the upper shell and the lower shell is plastic with hardness and elasticity, for example, polypropylene and the like; the lower shell comprises a lower connecting plate 3, the two ends of the lower connecting plate 3 are provided with protrusions 4, the top of the lower connecting plate 3 is connected with a mounting bin body 5, the ferromagnetic body 1 and the neodymium iron boron magnet 2 are placed in the mounting bin body 5, and the two neodymium iron boron magnets 2 are respectively located at the two ends of the ferromagnetic body 1; the length of the lower connecting plate 3 is longer than the length of the mounting bin body 5, and the part of the lower connecting plate 3 which is longer than the mounting bin body 5 is provided with a mounting hole 9.

[0041] The upper shell comprises an upper connecting plate 6, the two ends of the upper connecting plate 6 are respectively connected with a clamping plate 7 perpendicularly, the clamping plate 7 is provided with a plug hole 8, the length of the upper connecting plate 6 is the same as that of the lower connecting plate 3, the opposite two side walls of the two end portions of the upper connecting plate 6 are connected with sealing plates 10, and the sealing plates 10 are located between the two clamping plates 7; in addition, the opposite two side walls of the mounting bin body 5 are connected with side plates 11, the top of the side plate 11 is slightly lower than the opening of the mounting bin body 5, and a butt joint groove 12 is formed; the top of the upper connecting plate 6 is connected with two butt joint plates 13, the butt joint plates 13 are matched with the butt joint groove 12, and the two ends of the butt joint plate 13 are connected with the two end sealing plates 10 respectively.

[0042] When connecting, the ferromagnetic body 1 and the two neodymium-iron-boron magnets 2 are placed in the mounting bin body 5, the upper shell is placed on the lower shell, the two clamping plates 7 are slightly pulled outward, the abutting plate 13 is abutted into the abutting groove 12, the sealing plate 10 is just located at the part of the lower connecting plate 3 which is longer than the mounting bin body 5, the two clamping plates 7 are released so that the protrusions 4 are located in the insertion holes 8, and the connection of the upper shell and the lower shell is completed.

[0043] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combination magnet for a magnetically controlled switch, characterized in that, Include: Ferromagnetic body (1); Two neodymium iron boron magnets (2), respectively located at both ends of the ferromagnetic body (1).

2. The combined magnet for a magnetic control switch according to claim 1, wherein The diameter of the ferromagnetic body (1) is 9.5mm, and the length is 54mm.

3. The combined magnet for a magnetic control switch according to claim 2, wherein The diameter of the neodymium iron boron magnet (2) is 9.5mm, and the length is 8mm.

4. The combined magnet for a magnetic control switch according to claim 1, wherein Also include: The upper shell and the lower shell are butted, and the ferromagnetic body (1) and the neodymium iron boron magnet (2) are located in the upper shell and the lower shell.

5. The combined magnet for a magnetic control switch according to claim 4, wherein The lower shell includes: The lower connecting plate (3) is provided with a lug (4) at both ends; The installation warehouse (5) is connected at the top of the lower connecting plate (3), and the ferromagnetic body (1) and the neodymium iron boron magnet (2) are installed in the installation warehouse (5); The upper shell includes: The upper connecting plate (6); Two clamping plates (7) are vertically connected at both ends of the upper connecting plate (6), and the clamping plate (7) is provided with a plug hole (8); When the upper shell and the lower shell are butted, the upper connecting plate (6) is located at the opening of the installation warehouse (5), and the lug (4) is located in the plug hole (8).

6. The combined magnet for a magnetic control switch according to claim 5, wherein The length of the lower connecting plate (3) is longer than the length of the installation warehouse (5), and the length of the upper connecting plate (6) is the same as the length of the lower connecting plate (3); The part of the lower connecting plate (3) longer than the installation warehouse (5) is provided with a mounting hole (9).

7. The combined magnet for a magnetic control switch according to claim 6, wherein The opposite sides of the end of the upper connecting plate (6) are connected with the sealing plate (10), and when the upper shell and the lower shell are butted, the sealing plate (10) is located at the part of the lower connecting plate (3) longer than the installation warehouse (5).

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