JPS6317210Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic device, and in particular, the invention relates to an electromagnetic device including first insulating flanges disposed at both ends and coils disposed between the first insulating flanges. a hollow coil bobbin formed by integrally forming a plurality of bobbin portions and second insulating collar portions disposed between the bobbin portions from a synthetic resin material; a soft magnetic plate sandwiched by a notch formed in each of the second insulating parts of the coil bobbin, and a soft magnetic plate material extending over a part of the circumferential surface of each coil and having both ends fixed to the first insulating part. and a structure comprising a yoke made of a soft magnetic material that forms a magnetic path of each of the coils together with the soft magnetic plate material, and a movable iron core that is moved within the hollow cylinder of the coil bobbin in response to energization of the selected coil. By doing so,
The purpose is to provide an electromagnetic device that is easy to assemble.

Hereinafter, one embodiment of the electromagnetic device according to the present invention will be described in detail using the drawings. FIG. 1 is an external perspective view of an electromagnetic device according to the present invention, FIG. 2 is an exploded perspective view of the electromagnetic device shown in FIG. 1, and FIG. 3 is an axial cross-sectional view.

In FIGS. 1 to 3, 1 is a coil bobbin made of synthetic resin;
are arranged at both ends of bobbin parts 1A ₁ and 1A ₂ on which the coils L ₁ and L ₂ are wound a predetermined number of times in a cylindrical shape, and an insulating collar part 1B arranged between the bobbin parts 1A ₁ and 1A ₂ . The insulating flange 1C is integrally formed with the insulating flange 1C, and the center thereof is formed into a hollow cylindrical shape for movable iron core 2 to move. Furthermore, the insulating flange 1B is formed with a notch 1B ₁ for holding the soft magnetic plate 3, and each of the insulating flange 1C is engaged with an engagement positioning protrusion 1C ₁ . A bobbin portion ₁ is provided on the insulating collar portion 1C.
A power supply terminal 4 is fixed to which each end of the coils L ₁ and L ₂ wound around A ₁ and 1A ₂ are connected. Reference numeral 5 denotes a U-shaped yoke made of soft magnetic material.
A notch 5A that is fitted into the engagement positioning protrusion 1C 1 provided on the collar 1C of the coil bobbin ₁ and an engagement hole 5B that is engaged with the engagement protrusion 1C ₂ are provided on both end faces of the coil bobbin 1. Each is provided.

When assembling an electromagnetic device formed of such members, the coil bobbin 1 is first prepared, and the flange 1B of the coil bobbin 1 is assembled.
Insert the soft magnetic plate 3 into the notch _1B1 . At this time, since the soft magnetic plate 3 is provided with a notch 3A, it is arranged until the center is located on the axis of the coil bobbin 1. In this state, coils L ₁ and L ₂
are wound a predetermined number of times on the bobbin portions 1A ₁ and 1A ₂ , respectively, and the ends thereof are connected to the power supply terminal 4. As a result, the soft magnetic plate material is placed between the coils L ₁ and L ₂ adjacent to and facing each coil end surface. 3 is arranged.

The yoke 5 is then attached to the coil bobbin around which the coils _L1 and _L2 are wound in this manner. The yoke 5 is formed in a state in which it can be somewhat elastically deformed. The yoke 5 is pressed into the bobbin with both side walls of the yoke 5 spread apart so that the outer wall of the flange portion 1C comes into contact with the inner wall of the yoke 5. The notch 5A and the engagement hole 5B of the yoke 5 are then pressed into the bobbin with both side walls of the yoke 5 spread apart.
When these correspond to the protruding portion _1C1 and the protruding portion _1C2 of the coil bobbin 1, respectively, an engaged state is formed with each other.

In this way, the electromagnetic device according to the present invention simply attaches the necessary members to the basic coil bobbin 1, and then
Since the yoke material is finally fitted in the same way, the assembly is very simple.

The electromagnetic device according to the present invention formed in this manner is used, for example, to move a slider of a slide switch. One embodiment is shown in FIG.
In FIG. 4, reference numeral 22 denotes a fixed terminal board on which a plurality of fixed terminals 25 are arranged in a straight line, and the electromagnet device is fixed to this board. 23 is a fixed terminal board 22
A slider for switching and connecting a movable contact piece to the upper fixed terminal 25, and the slider 23 has an engaging portion 23 that engages with the engaging portion 2A of the movable iron core 2.
A is provided. Then, the cover 21 is attached to the board 22 to form one unitized electromagnetic changeover switch.

The electromagnetic changeover switch formed in this way connects the coil L ₁ through the power supply terminal 4 ₁ or the power supply terminal 4 ₂
When the coil L ₂ is energized through the coil L 2 , the movable iron core 2 is moved to a position where it is acted upon by each exciting coil, and the slider 23 is also moved accordingly.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an electromagnetic device according to the present invention, FIG. 2 is an exploded perspective view of the electromagnetic device shown in FIG. 1, and FIG. 3 is an axial cross-sectional view. Fourth
The figure shows an embodiment of an electromagnetic changeover switch using an electromagnetic device according to the present invention. DESCRIPTION OF SYMBOLS 1...Coil bobbin, _1A1 , _1A2 ...Bobbin part, 1C...First insulating flange, 1B...Second insulating flange, _1B1 ...Notch, 2...Movable core, 3
... Soft magnetic plate material, 5 ... Yoke, L ₁ , L ₂ ... Coil.

Claims (1)

[Scope of utility model registration request] a first insulating collar provided at both ends;
A hollow body formed by integrally forming a plurality of bobbin parts, each of which is arranged between insulating collar parts and around which a coil is wound, and a second insulating collar part, which is respectively arranged between the bobbin parts, from a synthetic resin material. a shaped coil bobbin, a soft magnetic plate sandwiched by notches formed in the second insulating part of the coil bobbin in a state adjacent to and facing each coil end surface, and a part of the circumferential surface of each of the coils. and both ends thereof are fixed to the first insulating part,
An electromagnetic device comprising: a yoke made of a soft magnetic material that forms a magnetic path of each of the coils together with the soft magnetic plate; and a movable iron core that is moved within the hollow of the coil bobbin in response to energization of the selected coil.