JPS6116650Y2 - - Google Patents

Description

Detailed Description of the Invention This invention relates to a solenoid having an improved mounting means for a lid that is fixed to a frame.

Conventionally, an excitation coil 1 having a cylindrical shape as a solenoid and having a fixed iron core (not shown) fitted at one open end is surrounded by a frame 2 having a U-shaped cross section, and side pieces 21, 21 of the frame 2 facing each other are surrounded by a frame 2 having a U-shaped cross section. Some have a lid 3 attached to the tip thereof, which has an opening 31 communicating with the other open end of the excitation coil 1. In this case, the means for attaching the lid 3 is the side piece 2 of the frame 2.
Notch grooves 211 are provided at the tips of 1 and 21, respectively, and protrusions 31 and 31 are formed on both sides of the lid body 3, respectively, and these protrusions 31 and 31 are connected to the notch grooves 211.
In this state, the side piece 2 is fitted as shown in Fig. 2.
The lid body 3 is fixed by caulking 4 at the tips of 1 and 21.

However, according to this configuration, caulking 4
In order to apply the
Since the length of the frame 2 must be sufficiently protruded from the plate surface, the length of the frame 2 cannot be used effectively, and the bobbin length becomes correspondingly small, which has the disadvantage that the effective number of turns of the excitation coil 1 is limited. Further, the protruding tips of the side pieces 21, 21 look bad and are not desirable as a product.

This invention was made to eliminate the above-mentioned drawbacks, and provides a solenoid that can increase the effective length of the frame, increase the number of windings of the coil, eliminate unnecessary protrusions, and have a good appearance. The purpose is to

An embodiment of this invention will be described below with reference to the drawings.

In FIG. 3, reference numeral 11 denotes an excitation coil, and this coil 11 is wound around a cylindrical bobbin (both not shown) having one open end fitted with a fixed iron core.

The excitation coil 11 is surrounded by a frame 12 having a U-shaped cross section, and a lid 13 having an opening 131 communicating with the other open end of the bobbin is attached to the opposing ends of the side pieces 121, 121 of the frame 12. In this case, the frame 12 has opposite side pieces 12
A cutout groove 1211 is formed at the center of the tip of the cutout groove 1212, and a cutout groove 1211 is formed on both sides of the bottom of the cutout groove 1211.
A pair of grooves 1211a, 1211a are formed.
Further, as shown in FIG. 4, the lid body 13 has protrusions 132, 132 formed at the center of opposing side edges corresponding to the notch grooves 1211, and stepped portions 1321 at both side edges of the protrusions 132, 132. ,132
A pair of protrusions 1322, 1322 are formed to be fitted into the grooves 1211a, 1211a via the protrusions 1322, 1322.

And side pieces 121, 12 of the frame 12
The projections 1322, 1322 are fitted into the grooves 1211a, 1211a while inserting the projection 132 of the lid 13 into each notch groove 1211 of the fifth
As shown in the figure, the lid 13 is fixed by caulking 14 at the tips of the side pieces 121, 121.

However, according to such a configuration, frame 1
Even if the tip of 2 and the plate surface of the lid body 13 are flush, the lid body 13 can be fixed to the frame 12 by caulking 4. As a result, the length of the frame 12 can be used effectively, so the bobbin length can be increased accordingly, and the effective number of turns of the excitation coil 11 can be increased, making it possible to obtain a compact device with a large operating force. It turns out. Furthermore, since the contact area between the frame 12 and the lid 13 can be increased, the magnetic resistance therebetween can be reduced and the magnetic flux can be used effectively, and from this as well, the operating force can be increased. Moreover, since unnecessary protrusions can be removed, the product looks good and is good as a product.

Note that this invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications without changing the gist. For example, as shown in FIG. 6, a recess 133 is formed on both sides of the lid 13, and protrusions 1332, 1332 that protrude toward the lower surface of the lid 13 through step portions 1331, 1331 are formed on both sides of the recess 133. ,
On the other hand, a protruding piece 1212 corresponding to the recess 133 may be formed at the tip of the side piece 121 of the frame 12, and a pair of grooves 1212a corresponding to the protrusion 1332 may be formed on both sides of the base end of the protruding piece 1212. .

As mentioned above, with this invention, the effective length of the frame can be increased, the number of coil turns can be increased, and unnecessary protrusions can be eliminated.
A solenoid with good appearance can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a conventional solenoid. FIG. 2 is a schematic configuration diagram showing a conventional lid in a fixed state. FIG. 3 is a perspective view showing an example of the present invention.
FIG. 4 is a perspective view of the lid body used in the same embodiment, FIG. 5 is a schematic configuration diagram showing the fixed state of the lid body according to the same embodiment, and FIG. 6 is a schematic diagram showing another embodiment of the invention. FIG. 1, 11... Excitation coil, 2, 12... Frame, 21, 121... Side piece, 3... Lid, 31,
131...Opening, 32, 132...Protrusion, 4,
14...Caulking, 1211...Notch groove, 1211
a...Groove, 1212...Protruding piece, 1321, 13
31...Step part, 1322, 1332...Protrusion, 1
33... Concavity.

Claims (1)

[Scope of utility model registration request] An excitation coil, a notch groove or a protruding piece is formed at the center of the tip of each side piece which is provided to surround the coil and have a U-shaped cross section and which face each other, and a notch groove or a protruding piece is formed at the center of the tip of each side piece that surrounds this coil, and a notch groove or a protruding piece is formed on both sides of the bottom of the notch groove or on the protruding piece. A frame having a pair of grooves formed on both sides of the base end, and a protrusion or recess corresponding to the notch groove or the protrusion piece between the opposite ends of the side pieces of the frame, and the protrusion A solenoid comprising: a lid body having a pair of protrusions formed on both side edges or both side walls of the recessed portion to be fitted into the groove via a stepped portion.