JPS5837966B2 - electromagnetic device - Google Patents

Description

[Detailed description of the invention] TECHNICAL FIELD This invention relates to electromagnetic devices.

Conventionally, as shown in FIGS. 1 to 3, an E-shaped laminated core 1 and a ■-shaped laminated core 2 are provided, and on one side, the butt edge of the leg portion 3 of the E-shaped laminated core 1 and the ■-shaped laminated core 2 is formed. 4, and on the other side, the abutting edge 5 between the leg portion 3 and ■-shaped laminated core 2 is welded together with the mounting plate 6, and both sides of both laminated cores 1 and 2 and both sides of the mounting plate 6 are welded. There are things.

In this case, a slit hole (not shown) is formed in a portion of the mounting plate 6 that coincides with the abutting edge for welding with the iron cores 1 and 2.

That is, the welding part 7 is a weld between the leg part 3 and the ■-shaped laminated core 2, and the welding parts 8 and 9 are welding between the laminated core 1 or 2 and the mounting plate 6.

On the other hand, the welding part 10 is a three-way weld between the laminated cores 1 and 2 and the mounting plate 6.

Therefore, it takes time to melt the three parts in the welded part 10, and the welding conditions are different from those of the other welded parts I, 8, and 9, so welding must be performed in two steps.

Even if it were to be welded all at once, it would require a considerable amount of welding time.

In addition, in the welding part 10, the temperature at which the two laminated cores 1 and 2 are melted is too high for the mounting plate 6, and a protrusion due to welding sag is generated between the mounting plate 6 and the laminated cores 1 and 2. A gap 11 is created.

This gap 11 is particularly marked with E-type laminated core 1 and ■-type laminated core 2.
When these are welded, the span of the welded parts 8 and 10 widens, so when an impact test or the like is performed, the span widens as shown in FIG. 3.

This has the disadvantage that the appearance is not only spoiled, but also that the mounting plate 6 vibrates and makes a humming noise when energized.

The object of the present invention is to provide an electromagnetic device that can eliminate the above-mentioned drawbacks.

This invention provides a plurality of laminated cores that abut against each other, and a mounting plate that straddles these laminated cores and is joined to one side thereof is positioned at a position offset from the abutting edges of the laminated cores in the lamination direction. Shape a slit hole along the
The laminated core and the mounting plate are welded along the lamination direction at both side edges thereof and at the slit hole portions.

Therefore, the plurality of laminated cores and the mounting plate are integrated by welding, but when looking at the weld between the plurality of laminated cores and the mounting plate, the three parts, the plurality of laminated cores and the mounting plate, are welded at the same time. Since there are no parts, it is possible to weld the welded parts in the same process, and it also prevents welding sagging due to overheating of the mounting plate, improving the appearance and reducing the gap between the mounting plate and the laminated core. Smaller size, especially E-type laminated core and ■
When welding the E-type laminated core, the welded part between the leg of the E-type laminated core and the mounting plate that is away from the butting edge of the ■-type laminated core should not be too far to one side with respect to both outside sides. This makes it possible to further reduce the gap between the laminated core and the mounting plate, thereby preventing the mounting plate from humming due to vibration. Although welding is to be performed at the welding section, the punched-out groove is formed on the extension line of the slit hole to prevent interference with the welding electrode and to facilitate welding work.

An embodiment of the present invention will be explained based on FIGS. 4 to 10.

Components that are the same as those described in FIGS. 1 to 3 are designated by the same reference numerals, and description thereof will be omitted.

A mounting plate 6 is provided, one piece of which is larger than the dimension in the stacking direction of the E-type laminated core 1 and the ■-type laminated core 2, which are laminated cores, and the other piece has a size that matches the width of the butted cores 1 and 2. It is provided.

This mounting plate 6 has a slit hole 13 located closer to the base of the leg portion 3 than the butt edge 5 and extending along the stacking direction of the iron cores 1 and 2.
is taking shape.

In such a structure, the iron cores 1 and 2 are welded together on the butt edge 4 on one side, and the iron cores 1 and 2 are welded on the other side.
Both sides of the iron core 2 and both sides of the mounting plate 6 are welded together, and the legs 3 of one iron core 1 and the intermediate part of the mounting plate 6 are welded on the slit hole 13, so that the two are integrally connected.

As explained in FIGS. 1 to 3, the welding parts 7, 8, and 9 are the joining of the two cores 1 and 2 or one of the cores 1 and 2 and the mounting plate 6, but the slits Since the hole 13 is offset from the butt edge 5, the core 1 and the mounting plate 6 are joined together at the welded portion 12 as well.

i.e. each weld? , 8, 9, and 12 are the same, and can be welded in one step.

Further, since there is no part where three parts including the mounting plate 6 are welded at the same time, it is possible to prevent welding sag due to overheating of the mounting plate 6.

Thereby, the appearance can be improved and the iron cores 1 and 2 and the mounting plate 6 can be brought into close contact with each other.

The span between the welded parts 12 and 8 is the welded part 8 and the butt edge 5
Even if a drop test or the like is performed, the gap 11 generated between the cores 1, 2 and the mounting plate 6 is extremely small.

Thereby, generation of whine due to vibration can be prevented.

In addition, if the laminated thickness of the iron core 1 and the length of the slit hole 13 match, the edge of the slit hole 13 is melted and welded, so that one end of the slit hole 13 is inside the end surface of the iron core 1. If the welding electrode is located at are difficult to match.

Even in the case of manual welding, the welding speed is inevitably slow at the end of the slit hole 13, so welding sagging is likely to occur.

However, since the slit hole 13 is set to a length that protrudes from the end of the iron core 1 in the stacking direction, complete welding can be performed without strictly positioning the slit hole 13 with respect to the iron core.

Furthermore, if the welding electrode is run at a constant speed and the current is turned off near the end of the iron core 1, welding sag will not occur near the end of the slit hole 13.

Furthermore, if at least one end of the portion of the slit hole 13 protruding from the end face of the iron core 1 is widened to form the expanded portion 14, welding will not occur to the extent of the expanded portion 14.

That is, even if the slit hole 13 for welding is made long, welding of an unnecessary portion protruding from the end of the iron core 1 can be prevented.

Furthermore, by forming the punched groove 15 on the extension line of the slit hole 13, interference between the welding electrode and the mounting plate 6 can be prevented.

Furthermore, as shown in FIG. 9, even if the slit hole 13 is simply formed in the mounting plate 6 by shifting it from the abutting edge 5, each welding part 7, 8, 9, 12 can be welded in the same process, or the mounting plate 6 can be welded in the same process. 6
As mentioned above, it is possible to prevent welding sag from occurring due to overheating.

Furthermore, as shown in FIG. 10, even if a mounting plate 6 having a slit hole 13 and widened portions 14 located at both ends of the mounting plate 6 is used, the effect obtained when using the mounting plate 6 shown in FIG. 9 can be obtained. As described above, the expanded portion 14 can prevent welding of unnecessary portions.

In this embodiment, the E-type laminated core 1 and ■-shaped laminated core 2 are welded together, but the laminated cores to be joined are not limited to E-type and ■-type, but can be E-type and E-type. shape,
It is also possible to combine laminated iron cores in U-shape and U-shape, U-shape and ■-shape, F-shape, square-shape and L-shape, T-shape and L-shape, or Paco-shape, etc.

Since this invention is configured as described above, the plurality of laminated cores and the mounting plate are integrated by welding, but the plurality of laminated cores and the mounting plate are also integrated at the welded portion between the plurality of laminated cores and the mounting plate. There are no parts where three parts are welded at the same time, and all welding parts can be welded at the same time under the same welding conditions, which shortens the process and prevents the mounting plate from melting too much. Because of this, there is no welding sag, which improves the appearance and reduces the gap between the laminated core and the mounting plate.Especially when welding an E-type laminated core and a ■-type laminated core, the E-type laminated core The legs of the iron core and ■
Since it is welded to the middle of the mounting plate at a position away from the butt edge with the laminated core, the welded part will not be too lopsided with respect to the welded parts on both outer sides, and this will prevent the welding between the laminated core and the mounting plate. It is possible to further reduce the gap, thereby preventing the occurrence of buzzing due to vibration, and furthermore, by forming the punched groove on the extension line of the slit hole, interference with the welding electrode can be prevented and welding can be performed easily. It has the effect that it can be done.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is a front view thereof, Fig. 3 is a front view after a drop test, Fig. 4 is a perspective view showing an embodiment of the present invention, and Fig. 5 is a front view thereof. Figure 6 is a perspective view of the mounting plate, Figure 7 is its front view, Figure 8 is its front view after the drop test, and Figure 9 shows only the slit hole. FIG. 10 is a perspective view of the mounting plate in which both ends of the slit hole are widened. 1... E-type laminated core (laminated core), 2...
...■-shaped laminated core (laminated core), 3...legs,
4-5... Butt edge, 6... Mounting plate, 13... Slit hole, 15... Embossed groove.

Claims (1)

[Scope of Claims] 1. A plurality of laminated cores are provided that butt each other, and a mounting plate that straddles these laminated cores and is joined to one side thereof is located at a position offset from the abutting edges of the laminated cores. An electromagnetic device characterized in that a slit hole is formed along the lamination direction, and the laminated iron core and the mounting plate are welded together in the lamination direction at both side edges thereof and at the portion of the slit hole. 2. A slit hole along the lamination direction is located at a position shifted toward the base side of the leg of the E-type laminated core from the butting edge of the leg of the E-type laminated core and the ■-shaped laminated core. The electromagnetic device according to claim 1, characterized in that it is shaped into a mounting plate. 3. The electromagnetic device according to claim 1 or 2, wherein the length of the slit hole is set to a length that slightly protrudes from the end face of the laminated iron core in the direction of the lamination force. 4. The electromagnetic device according to claim 3, wherein at least one end of the slit hole is shaped wide. 5. A plurality of laminated cores are provided that butt each other, and each of the laminated cores is attached to a mounting plate that is determined to have one side longer than the length in the stacking direction of the laminated cores and is joined to one side of the laminated cores, and is connected to one side of the laminated cores. A slit hole corresponding to the length in the lamination direction and a punching groove located on an extension line of the slit hole are formed along the lamination direction so as to be offset from the abutting edges of the laminated core, and the laminated core and the mounting plate are connected to each other. An electromagnetic device characterized in that both side edges thereof and the portion of the slit hole are welded along the stacking direction. 6. The electromagnetic electromagnetic device according to claim 5, characterized in that the length of the slit hole is set to a length that slightly protrudes from the end face in the lamination direction of the laminated iron core, and at least one end of the slit hole is shaped wide. Device.