Electromagnetic coil

Abstract

The utility model relates to an electromagnetic coil, which belongs to the technical field of electromagnetic valves and comprises an electromagnet and a fixing seat, and the fixing seat is a plastic seat and is fixed on the electromagnet in a cast connection mode. According to the utility model, the adaptability of the electromagnetic coil is improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnetic coil. Background Technology

[0002] Solenoid valves typically use an electromagnetic coil to drive a valve core to open and close the valve. One type of electromagnetic coil includes an electromagnet and a mounting base for mounting the electromagnet onto the valve body. The electromagnet and mounting base must be compatible; that is, electromagnets of the same structure can only be fitted with mounting bases of the same structure. However, this uniform mounting base configuration prevents the electromagnetic coil from being adapted to valve bodies of different shapes. Utility Model Content

[0003] The present invention aims to improve upon the aforementioned shortcomings of existing electromagnetic coils.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] An electromagnetic coil includes an electromagnet and a fixed base, wherein the fixed base is a plastic base and is cast and fixed to the electromagnet.

[0006] As a preferred embodiment, the electromagnet includes a yoke and a coil assembly, with the coil assembly disposed on the yoke and plastically bonded to the fixed base together with the yoke.

[0007] As a preferred embodiment, the yoke includes a cylindrical body and a vertical pipe located at the bottom of the inner part of the cylindrical body and extending through the bottom of the outer part of the cylindrical body, with the vertical pipe and the side wall of the cylindrical body forming an annular cavity.

[0008] As a preferred embodiment, the coil assembly includes a coil frame and an enameled wire disposed on the coil frame. The coil assembly is disposed within the ring cavity so that the enameled wire is arranged around the periphery of the riser.

[0009] As a preferred embodiment, the coil frame is I-shaped, including a winding tube and circular baffles coaxially disposed around both ends of the winding tube. Enamelled wire is wound around the outside of the winding tube, and the entire coil frame is inserted into the annular cavity and fixed to the riser pipe by the winding tube.

[0010] As a preferred embodiment, the mounting base includes a mounting plate cast onto the bottom of the cylindrical body, an outer ring cast onto the outer wall of the cylindrical body, and a filler cast between the cylindrical body and the coil assembly.

[0011] As a preferred embodiment, the cylindrical body has several through holes circumferentially arranged on its sidewalls for introducing hot melt adhesive between the cylindrical body and the coil assembly.

[0012] As a preferred option, the mounting plate exposes the periphery of the yoke and the exposed part is provided with mounting holes and positioning posts.

[0013] As a preferred option, a power cord is also included, with a power tap at one end and a socket on the mounting plate at the other end.

[0014] As a preferred embodiment, a plug is provided on the circular baffle inside the coil frame. One end of the plug is electrically connected to the enameled wire, and the other end is connected to the socket and the power cord.

[0015] This invention involves casting a plastic mounting base onto a single magnet. The advantage of this design is that the mounting base can be molded into different shapes and specifications using different molds to fit valve bodies of different shapes, thereby improving the adaptability of the electromagnetic coil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic coil disclosed in this utility model.

[0017] Figure 2 This is an exploded view of the overall structure of an electromagnetic coil disclosed in this utility model.

[0018] Figure 3 An exploded view of an electromagnet for an electromagnetic coil disclosed in this utility model.

[0019] Figure 4 This is an exploded view of the coil assembly of an electromagnetic coil disclosed in this utility model.

[0020] Figure 5 This is a partial cross-sectional view of an electromagnetic coil disclosed in this utility model. Detailed Implementation

[0021] The present invention will now be described in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1-5 An electromagnetic coil is shown, including an electromagnet 10 and a fixing base 20. The fixing base 20 is a plastic base and is integrally cast and fixed on the electromagnet 10.

[0023] The electromagnet 20 includes a yoke 11 and a coil assembly 12. The coil assembly 12 is disposed on the yoke 11 and is plastically connected to the fixing base 20 together with the yoke 11. The yoke 11 includes a cylindrical body 11.1 and a vertical tube 11.2 disposed at the bottom of the inner side of the cylindrical body 11.1 and extending through the bottom of the outer side of the cylindrical body 11.1. The vertical tube 11.2 and the side wall of the cylindrical body 11.1 form an annular cavity 11.3. The coil assembly 12 includes a coil frame 12.1 and enameled wire disposed on the coil frame 12.1. 12.2 The coil frame 12.1 is I-shaped and includes a winding tube 12.11 and circular baffles 12.12 coaxially disposed around both ends of the winding tube 12.11. The enameled wire 12.2 is wound around the outer periphery of the winding tube 12.11. The coil frame 12.1 is inserted into the annular cavity 11.3 and fixed to the riser 11.2 by the winding tube 12.11, so that the coil assembly 12 is disposed in the annular cavity 11.3, and the enameled wire 12.2 is arranged around the outer periphery of the riser 11.2.

[0024] The mounting base 20 includes a mounting plate 20.1 cast to the bottom of the cylindrical body 11.1, an outer ring 20.2 cast to the outer wall of the cylindrical body 11.1, and a filler 20.3 cast between the cylindrical body 11.1 and the coil assembly 12. The side wall of the cylindrical body 11.1 is provided with a plurality of through holes 11.11 for introducing hot melt adhesive between the cylindrical body 11.1 and the coil assembly 12. The mounting plate 20.1 is exposed around the yoke 11 and the exposed part is provided with mounting holes 20.11 and positioning posts 20.12.

[0025] The electromagnetic coil also includes a power cord 30, one end of which is provided with a power take-off head 30.1, and the other end is plastically connected to a socket 20.13 provided on the mounting plate 20.1. A plug 12.121 is provided on the circular baffle 12.12 inside the coil frame 12.1. One end of the plug 12.121 is electrically connected to the enameled wire 12.2, and the other end passes through the through hole provided on the cylindrical body 11.1 and connects to the socket 20.13 and the power cord 30.

[0026] During assembly, the coil assembly is first inserted into the yoke 11 to form the electromagnet 10. Then, the electromagnet 10 is placed in the molding mold, and hot melt adhesive is injected into the molding mold to cast the fixing seat 20 on the electromagnet 10. By using different molding molds, fixing seats 20 of different shapes and specifications can be cast.

Claims

1. An electromagnetic coil, comprising an electromagnet (10) and a fixed base (20), characterized in that: The mounting base (20) is a plastic base and is cast and fixed on the electromagnet (10).

2. An electromagnetic coil according to claim 1, characterized in that: The electromagnet (20) includes a yoke (11) and a coil assembly (12). The coil assembly (12) is disposed on the yoke (11) and is plastically connected to the fixed base (20) together with the yoke (11).

3. An electromagnetic coil according to claim 2, characterized in that: The yoke (11) includes a cylindrical body (11.1) and a vertical pipe (11.2) located at the bottom inside the cylindrical body (11.1) and extending through the bottom outside the cylindrical body (11.1). The vertical pipe (11.2) and the side wall of the cylindrical body (11.1) form an annular cavity (11.3).

4. An electromagnetic coil according to claim 3, characterized in that: The coil assembly (12) includes a coil frame (12.1) and an enameled wire (12.2) disposed on the coil frame (12.1). The coil assembly (12) is disposed in the annular cavity (11.3) so that the enameled wire (12.2) is arranged around the periphery of the riser (11.2).

5. An electromagnetic coil according to claim 4, characterized in that: The coil frame (12.1) is I-shaped and includes a winding tube (12.11) and circular baffles (12.12) coaxially disposed around both ends of the winding tube (12.11). Enamelled wire (12.2) is wound around the winding tube (12.11). The coil frame (12.1) is inserted into the annular cavity (11.3) and fixed to the riser (11.2) by the winding tube (12.11).

6. An electromagnetic coil according to claim 5, characterized in that: The mounting base (20) includes a mounting plate (20.1) cast to the bottom of the cylindrical body (11.1), an outer ring (20.2) cast to the outer side wall of the cylindrical body (11.1), and a filler (20.3) cast between the cylindrical body (11.1) and the coil assembly (12).

7. An electromagnetic coil according to claim 6, characterized in that: The cylindrical body (11.1) has several through holes (11.11) circumferentially provided on the side wall for introducing hot melt adhesive between the cylindrical body (11.1) and the coil assembly (12).

8. An electromagnetic coil according to claim 6, characterized in that: The mounting plate (20.1) exposes the periphery of the yoke (11) and the exposed part is provided with mounting holes (20.11) and positioning posts (20.12).

9. An electromagnetic coil according to claim 6, characterized in that: It also includes a power cord (30), one end of which is provided with a power tap (30.1), and the other end is plastically connected to a socket (20.13) provided on the mounting plate (20.1).

10. An electromagnetic coil according to claim 9, characterized in that: A plug (12.121) is provided on the circular baffle (12.12) inside the coil frame (12.1). One end of the plug (12.121) is electrically connected to the enameled wire (12.2), and the other end is connected to the socket (20.13) and electrically connected to the power cord (30).

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