JPS62181409A - Electromagnetic device - Google Patents

Abstract

PURPOSE:To prevent fall off of spacers, by forming a recess part in the surface of each spacer, which is inserted between an iron core body and a coil, thereby contacting each spacer in line contact. CONSTITUTION:An insulating spacer 16, which is formed with a synthetic resin, is inserted between an iron core body 10 and a coil 13 so as to determine the interval between both parts. A recess part 23 is formed in one side surface 22, which is contacted with the end surface of the iron core body 10 and becomes the surface of the spacer. Another side surface 17, which is contacted with the inner surface of the coil 13, is formed in a slant shape so that the spacer becomes smaller toward the tip. A stopper part 18, which is engaged with the outer surface of the coil 13, is protruded from the base end part of the other side surface 17. The spacer 16 is forcibly inserted between the iron core body 10 and the coil 13 along both end surfaces of the iron core body 10. Thus the spacer is contacted in line contact with the spacer surface. Therefore, the fall off of the spacer can be prevented.

Description

[Detailed description of the invention] [Objective of the invention] (Industrial application field) The present invention relates to an N magnetic device, which is inserted between an iron core body and a coil, and when a predetermined AC voltage is applied to the coil. The present invention relates to a spacer that prevents glare caused by core vibrations and coil vibrations and maintains an insulating distance between the coil and the core body.

(Prior Art) As shown in FIGS. 5 and 6, in the conventional electromagnetic device of this type, a wedge-shaped spacer 3 is press-fitted between an iron core 1 and a coil 2 attached to the iron core 1. A structure is adopted in which a coil 2 is fixed to a body 1.

In general, varnish treatment is applied to the electric device 1 and equipment, but the varnish deteriorates over time and the adhesion of the varnish decreases significantly. It is necessary to suppress vibration and achieve the purpose of insulation between the coil and the iron core, and varnish treatment must be considered as an auxiliary means.

(Problems to be Solved by the Invention) In the conventional structure, since the spacer 3 is formed in a wedge shape, the spacers 3 and 3 inserted along both end surfaces of the iron core body 1 as shown in FIG. If the spacer 3 is not press-fitted evenly and the varnish deteriorates, the spacer 3 that was inserted shallowly will come out due to the vibration of the core body and coil when power is applied, resulting in a large glare and the spacer 3 colliding with both end faces of the core body 1. Because the gap between the coil 2 and the coil 2 is uneven, the insulation distance between the coil 2 and the iron core 1 becomes short on the side where the spacer 3 is inserted shallowly, resulting in insufficient insulation distance, and as shown in FIG. If the spacer 3 is tilted or the spacer 3 comes into contact with the coil 2 at one point as shown in Fig. 9, the insertion of the spacer 3 becomes unstable, and defects in the insertion process of the spacer 3 or defects due to changes over time may occur. It has the disadvantage of being easy to assemble and having poor assembly workability.

The present invention has been made in view of the above-mentioned problems.A spacer is inserted between a coil and an iron core to maintain an insulating distance between the coil and the iron core. Provides an electromagnetic device that prevents the spacer from coming out by making wire contact with the spacer, prevents glare due to core vibration and coil vibration by applying AC voltage, and prevents process defects and defects due to changes over time. It is something to do.

[Structure of the invention]

(Means for Solving the Problems) The electromagnetic device of the first invention includes an iron core, a coil attached to the iron core, and a coil inserted between both end faces of the iron core and the coil. Consisting of a spacer molded from resin that determines the distance between the iron core body and the coil, a stopper portion for positioning and holding the spacer is formed protrudingly on the spacer, and a recess is roughly formed on the spacer surface of the spacer. It is characterized by:

In addition, the second invention has the structure of the first invention,
The stopper portion of the spacer engages with the outer circumferential surface of the coil, and is characterized in that a recess is formed in the spacer surface facing the iron core surface side of the iron core body.

(Function) In the electromagnetic 5A device of the first invention, the spacer is strongly inserted between the core body and the coil along both end faces of the core body, so that the spacer is in line contact with the spacer surface. Further, in the electric device 11 of the second invention, the stopper portions of the spacers are respectively engaged with the outer circumferential surface of the coil. The amount of insertion of both spacers becomes uniform, and the insulation gap between the core body and the inner circumferential surface of the coil becomes substantially the same on both end faces of the core body.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4 of the drawings.

10 is a core body, which includes an E-type laminated core 11 and an I-type laminated core 12.
The coil 13 is fitted and attached to the central leg core 14 of the E-type laminated core 11, the E-type laminated core 11 is butted with the [-shaped laminated core 12], and the side legs of the E-type laminated core 11 are Part 1
5 and the I-shaped laminated core 12 are welded together. Also, both laminated cores 1
1.12 welds the central part in the stacking direction.

Further, the bottom of the E-type laminated core 11 is welded to the mounting plate 26.

Next, 16 is an insulating spacer molded from synthetic resin that is inserted between the iron core 10 and the coil 13 and defines the distance between the iron core 10 and the coil 13, as shown in FIGS. 3 and 4. As shown, the spacer 16 is bonded to the end surface of the iron core 10 which becomes the spacer surface.--The other side surface 1 is formed with a recess 23 in the side surface 22 and is bonded to the inner surface of the coil 13.
7 is formed in an inclined shape so as to become thinner toward the tip side,
In addition, a stopper portion 18 that is engaged with the outer circumferential surface of the coil 13 is formed in a projecting shape at the NF2 portion of the side surface 17.

Next, the operation of this embodiment will be explained.

The coil 13 is fitted into the medium-heat leg core 14 of the E-type laminated core 11, and the I-type laminated core 12 is butt-joined and welded.
An electromagnetic body 19 having an iron core gap 21 as shown in the figure is constructed.

Next, as shown in FIG. 1, when spacers 16 and 16 are firmly inserted between the core body 10 and the coil 13 along both end faces of the iron core body 10, one side face 22 of the flat plate 1G opposite to the core face The surface of the spacer 16 is reduced by the recess 23.
One side 22 of the surface is in line contact with the core surface, and the spacer 16.1
By abutting and engaging the stopper portions 18 of 6 with the outer circumferential surface of the coil 13, the insertion amounts of both spacers 16 and 16 become uniform, and the insulation gap l between the iron core body 10 and the inner circumferential surface of the coil 13 becomes uniform. are approximately the same on both end faces of the iron core body 10.
becomes.

And the center leg portion 14 of the E-type laminated core 11 of the core body 10
When welding the tip end face in the direction of the WA layer to prevent glare caused by photographing the core body 10, welding sag occurs in the stacking direction, and this welding sag protrudes from the end face of the iron core body 10. Since the spacer 16 has the recess 23 formed therein, the spacer 16 is reliably inserted between the iron core 10 and the coil 13.

Note that the spacer 16.16 is the E-type laminated core 1 of the core body 10.
The I-shaped laminated core 12 may be inserted into the hole to be joined with the I-type laminated core 12 fitted with the I-shaped coil 13.

〔Effect of the invention〕

According to the first invention, since a recess is formed in the spacer surface of the spacer inserted between the iron core body and the coil, the spacer is brought into line contact, and the handle of the spacer is prevented from coming out. The spacer is securely attached.

In addition, in the second invention, the spacer is formed with a stopper portion that engages with the outer peripheral surface of the coil to position and hold the spacer, so that the spacer is positioned and held by the stopper portion engaging with the outer peripheral surface of the coil. When inserting this spacer, the insertion dimensions of the spacer are press-fitted evenly, preventing one side of the spacer from coming out, and insulating the coil from both end faces of the iron core! is held constant, and even if the core body is welded in the laminated direction to prevent vibration, even if welding occurs, the spacer can escape the welding in the recess and the spacer can be installed securely, ensuring stable quality. An electromagnetic device is obtained and workability is improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an electric ta device showing one embodiment of the present invention;
Figure 2 is a sectional view of the same as above, Figures 3 and 4 are perspective views of the spacer as above, Figure 5 is a perspective view of the iron core of a conventional electromagnetic device, Figure 6 is a sectional view of the same as above, The figure is a sectional view showing a state in which the above spacer is incorrectly inserted, FIG. 8 is a perspective view showing a state in which the spacer is incorrectly inserted, and FIG. 9 is a plan view thereof. 10... Iron core body, 13... Coil, 16... Spacer,
18...stopper part, 22...one side surface that becomes a spacer surface, 23...recessed part. Four-faced gu・、；palm (white τ゛, no change) drawing gu) 1ノ”
l': 'C inside' (no inotropic force on i) hand, continuation m positive 11F (
Method) % formula % 1. Indication of the case Patent Application No. 227232 of 1985 2. Name of the invention Electromagnetic device 3. Person making the amendment Relationship to the case Patent applicant 356 Tokyo Electric Co., Ltd. 4. Agent 6. Amendment Pair 9 Drawing

Claims (2)

[Claims] (1) An iron core, a coil attached to the iron core, and a spacer molded from resin that is inserted between both end faces of the iron core and the coil and defines the distance between the iron core and the coil. An electromagnetic device comprising: a stopper portion protruding from the spacer for positioning and holding the spacer; and a recess formed on a spacer surface of the spacer. (2) An iron core, a coil attached to the iron core, and a spacer molded from resin that is inserted between both end faces of the iron core and the coil to define the distance between the iron core and the coil. The spacer has a protruding stopper portion that engages with the outer peripheral surface of the coil to position and hold the spacer, and a recess is formed on the surface of the spacer that faces the iron core side of the iron core body. electromagnetic equipment.