JPH10189362A - Mounting structure for temperature protective device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to incorporate a temperature protective device into an electromagnetic device after the electromagnetic device is assembled. SOLUTION: In a mounting structure which is used for mounting a temperature protective device 3 on an electromagnetic device provided with two coils 2 arranged on one axis, a core 1 attached to the coils 2, and an outer member 9 provided with a coil facing plate section 15a which is faced to the upper and lower outer peripheral side faces of the coils 2, a device inserting hole 15f which communicates with the space between the core 1 and the coil facing plate section 15a and into which a temperature protective device 3 is inserted is provided on the side face of the outer member 9 positioned between the coils 2. In addition, an inserting hole 15g is provided on the coil facing plate section 15a side of the temperature protective device 2 inserted from the hole 15f and a pressing means 18 which presses the protective device 3 against the core 1 so that the device 3 can closely adhere to the core 1 is provided on the mounting surface side of the outer member 9 on which the electromagnetic device is mounted as a projecting section 18a which can be inserted into the inserting hole 15g.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature protection device mounting structure.

[0002]

2. Description of the Related Art FIG. 5 shows a structure for mounting a conventional temperature protection device on a ballast used for lighting a discharge lamp (first example).
Which is disclosed in Japanese Utility Model Laid-Open Publication No. 2-63516 and includes an iron core 1, a coil 2, and a temperature protection device 3.

The iron core 1 is composed of two E-shaped iron cores 4 and an I-shaped iron core 5, and the two E-shaped iron cores 4 face the opening side of the E-shape, and the I-shaped iron It is configured to hold the core 5. A primary coil 6 and a secondary coil 7, which are the coils 2, are provided on the I-shaped iron core 5.
The I-shaped iron core 5 is mounted so as to be inserted into the hollow portion a. A temperature protection device 3 is disposed on one side of the iron core 1 and between the primary coil 6 and the secondary coil 7, and a pair of lead wires 3a of the temperature protection device 3 is an E-type iron. The iron core 1 passes through a wiring groove 4a provided in a notch on the side surface of the core 4.
Is connected to a terminal portion (not shown) provided on the other surface side.

FIG. 6 shows another conventional temperature protection device mounting structure (second conventional example).
The first conventional example is different from the first conventional example in that the wiring groove 4a is eliminated and the I-shaped iron core 5 between the primary coil 6 and the secondary coil 7 is provided. And a storage hole 8 large enough to receive the temperature protection device 3. The temperature protection device 3 is inserted into the storage hole 8 from one side of the iron core 1.
The lead wire 3a is connected to a terminal (not shown) on one side of the iron core 1.
The other configuration is substantially the same as that of the first conventional example.

[0005]

However, in the mounting structure of the temperature protection device shown in the first and second conventional examples as described above, after the temperature protection device 3 is assembled, it is composed of a base, a cap and the like. Shell 1 and coil 2 in outer shell
Since the electromagnetic device is assembled so as to cover the device and the like, there is a problem that it is necessary to manufacture a plurality of types of electromagnetic devices according to the necessity of the temperature protection device 3.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a mounting structure of a temperature protection device in which a temperature protection device can be incorporated after assembling an electromagnetic device. It is in.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to the first aspect of the present invention, wherein two coils are arranged on one axis so that one end thereof is opposed to the other. And an iron core mounted so as to substantially surround the two coils, and two coil opposing plate portions facing the outer peripheral side surface of the two coils from above and below respectively. In the mounting structure of the temperature protection device to an electromagnetic device having an outer member substantially covering around the one axial direction, the outer member is located between the two coils near one coil facing plate portion of the outer member. On the side of the outer member, a device insertion hole into which a temperature protection device is inserted in communication with a space between the iron core and the coil facing plate portion is provided,
A pressing means is provided on the one coil facing plate side of the temperature protection device inserted from the device insertion hole, for pressing the temperature protection device to the iron core.

[0008] According to the second aspect of the present invention, a first aspect is provided.
In the mounting structure of the temperature protection device described above, the pressing means is an elastic member disposed between one of the coil facing plate portions of the outer casing member and the temperature protection device.

According to the third aspect of the present invention, there is provided the first aspect.
In the mounting structure of the temperature protection device according to the aspect, the pressing unit may be a protrusion provided on a mounting surface side on which the electromagnetic device is mounted, and may be provided on one of the coil facing plate portions of the outer member positioned between the two coils. And an insertion hole through which the projection can be inserted.

[0010]

1 to 3 show a first embodiment of a mounting structure of a temperature protection device according to the present invention, in which a coil 2 on which an iron core 1 is mounted is covered with an outer member 9. FIG. The mounting structure of the temperature protection device 3 to the electromagnetic device assembled as described above is shown.

As shown in FIG. 3, the iron core 1 is composed of two E-shaped iron cores 4 having a substantially E-shaped plan view and one I-shaped iron core 5 having a substantially I-shaped plan view. A plurality of thin silicon steel sheets are stacked on each other, and two E-shaped iron cores 4 are arranged so that the opening sides of the E-shaped cores are opposed to each other.
Is configured to be held.

The primary coil 6 and the secondary coil 7 serving as the coil 2 are each formed by winding an insulated wire in a multi-layered form on a substantially quadrangular cylindrical bobbin having a hollow portion. Is formed by winding an interlayer paper such as kraft paper between the layers formed by the above, and by winding an insulating exterior material 2b on the outermost surface. Also, a primary coil 6 and a secondary coil 7
The I-shaped iron cores 5 are inserted into the hollow portions, and are arranged uniaxially with one ends facing each other.

The insulating plate 10 has a substantially rectangular thin plate shape, and is in contact with one surface of the iron core 1 on one surface of the iron core 1 and near both ends of the primary coil 6 and the secondary coil 7. It is arranged. Also, the insulating plate 10a on one side of the electromagnetic device
On the insulating plate on the side of the secondary coil 7, there is provided one external terminal 11 which is a connection terminal with the outside of the electromagnetic device, and the primary coil 6 which is the insulating plate 10 b on the other side of the electromagnetic device. On the side insulating plate, two external terminals 11 and one internal terminal 12 are provided. Also, primary coils 6 and 2
One internal terminal 12 is provided on the central insulating plate 10c between the secondary coil 7 and the secondary coil 7. The secondary coil 7 is connected between the external terminal 11 on the one-side insulating plate 10a and the internal terminal 12 on the central insulating plate 10c, and is connected to the internal terminal 12 on the other-side insulating plate 10b and the central terminal. The primary coil 6 is connected between the internal terminals 12 on the insulating plate 10c, and the internal terminals 12 on the central insulating plate 10c and one of the external terminals 11 on the other insulating plate 10b are insulated. Connected by wires.

The outer member 9 has a substantially U-shaped cross section and is made of a metal base 15 for housing the coil 2 having the iron core 1 mounted therein, and is covered from above the iron core 1 and the coil 2 to cover the base. 15 and a metal cap 16 disposed to substantially close the opening side having a substantially U-shaped cross section.
The base 15 has a coil opposing plate portion 15a in which a central piece having a U-shaped cross section faces the outer peripheral side surfaces of the two coils 2.
The side end of one of the coil facing plate portions 15a is formed into a vertical piece 15b formed by being bent substantially vertically, and the tip of the vertical piece 15b is bent outward to mount the iron core 1. The stepped portion 15c is placed on the side surface portion 1c. The tip of the stepped portion 15c is bent in a direction parallel to the vertical piece 15b.
5d, and a tongue piece 15e for caulking is provided at the tip thereof. The temperature protection device 3 is connected to the vertical piece 15b on the side between the two coils 2 so as to communicate with the space between the iron core 1 and the one coil facing plate 15a.
Is inserted into a position between the two coils 2 of one of the coil facing plate portions 15a for inserting a pressing means for pressing the temperature protection device 3 against the iron core 1. A hole 15g is provided.

The cap 16 has another coil-facing plate 16a facing the outer peripheral side of the upper side of the coil 2 on the opening side of the base 15, and the side of the base 15 which is both ends of the other coil-facing plate 16a. On the side that comes into contact with the face plate portion 15d,
A rising portion 16b is provided. Notches 16c are formed at both ends of the cap 16 in the axial direction of the coil 2 so that an insulating distance from each terminal on the insulating plate 10 is ensured.
Is provided.

The electromagnetic device having such a configuration is assembled as follows. That is, first, the coil 2 on which the iron core 1 is mounted is housed in the base 15 such that the E-shaped iron core 4 is placed on the step 15c. Then, the cap 16 is placed on the iron core 1 and the coil 2 housed in the base 15 so that the terminals of the insulating plate 10a on one side and the insulating plate 10b on the other side can be seen. Finally, the tongue piece 15e of the base 15 is swaged with the rising portion 16b of the cap 16.

The electromagnetic device assembled as described above is used for lighting a fluorescent lamp, and is used by connecting a temperature protection device 3 inserted through the device insertion hole 15f as necessary. The temperature protection device 3 includes a case 3b that cuts off an electrical connection between the pair of lead wires 3a when the detected temperature becomes equal to or higher than a predetermined temperature, such as a bimetal switch or a temperature fuse having a substantially rectangular parallelepiped shape made of an insulating member. And is connected to the outside of the case 3b by a pair of lead wires 3a protruding from one surface of the case 3b.

A temperature protection device 3 is provided on the mounting surface side of the fixture body 17 of the lighting fixture to which the electromagnetic device is attached.
Pressing means 18 for bringing the pressing means 18 into close contact with the iron core 1 between the two coils 2 is inserted into the projecting portion 18 which can be inserted into the apparatus insertion hole 15f.
It is provided as a. Then, the electromagnetic device is connected to the appliance body 17.
When the temperature protection device 3 is mounted on the mounting surface side of the iron core 1 and the one coil facing plate portion 15 through the device insertion hole 15f.
a, and projecting portion 18a is inserted into insertion hole 15
g, and inserts the temperature protection device 3 into the projection 18a.
Then, the electromagnetic device is attached to the instrument body 17 at the attachment portion of the base 15.

In the present embodiment, the temperature protection device 3
When the temperature protection device 3 is inserted through the device insertion hole 15f,
It is desirable that the temperature protection device 3 is temporarily held so as not to be inadvertently moved between the primary coil 6 and the secondary coil 7 by some means.
And temporary holding by means of the friction between them, or provision of a projection that substantially abuts the side surface of the temperature protection device 3 on one of the coil facing plate portions 15a to temporarily hold the coil.

When the temperature protection device 3 is not connected to the electromagnetic device, instead of connecting the temperature protection device 3, the other external terminal 11 and the internal terminal 1 on the other insulating plate 10b are connected.
2 is connected with an insulated wire.

As described above, in the mounting structure of the temperature protection device according to the present embodiment, the side surface of the outer member 9 located between the two coils 2 near one of the coil facing plate portions 15a of the outer member 9 is provided. And a device insertion hole 15f through which the temperature protection device 3 is inserted in communication with a space between the iron core 1 and one of the coil facing plate portions 15a.
Since the pressing means 18 for pressing the temperature protection device 3 to the iron core 1 is provided on the side of the one coil facing plate portion 15a of the temperature protection device 3 inserted from 5f, the temperature protection device 3 is incorporated after assembling the electromagnetic device. be able to. For this reason,
It is not necessary to manufacture a plurality of types of electromagnetic devices according to the necessity of the temperature protection device 3.

The pressing means 18 is provided on the mounting surface as a projection 18a that can be inserted into the insertion hole 15g. When the electromagnetic device is mounted on the mounting surface, for example, the instrument body 17, the projection 18a is inserted into the insertion hole 15g. The positioning of the electromagnetic device on the mounting surface is facilitated.

A device insertion hole 15f is provided on the side surface of the outer member 9 located between the two coils 2 in the vicinity of the one coil facing plate portion 15a. Since the insertion hole 15g for inserting the pressing means 18 is provided at a position between the coils 2, when impregnating the entire electromagnetic device with the varnish, the device insertion hole 15f is used.
In addition, the varnish easily passes between the central leg of the two E-shaped iron cores 4 and the I-shaped iron core 5 through the insertion hole 15g.

FIG. 4 shows a main part of a second embodiment of the mounting structure of the temperature protection device of the present invention. The difference from the first embodiment is that the coil facing plate portion 15a has The elastic member 1 provided without the insertion hole 15g and having the pressing means 18 disposed between the one coil facing plate portion 15a and the temperature protection device 3
8b, and the other configuration is substantially the same as that of the first embodiment.

With this configuration, the mounting structure of the temperature protection device according to the present embodiment has substantially the same effects as those of the first embodiment except for the effect of positioning the electromagnetic device on the mounting surface. And the pressing means 18
Is used as the elastic member 18b, even if the temperature protection device 3 and the electromagnetic device have dimensional variations, the elastic member 18b can absorb the variation and securely adhere the temperature protection device 3 to the iron core 1.

In the mounting structure of the temperature protection device according to the present embodiment, the elastic member 1 serving as the pressing means 18 is used.
8b may be in the form of a leaf spring formed by cutting and raising one of the coil facing plate portions 15a, and an insertion hole is provided on the one coil facing plate portion 15a side as in the first embodiment. In addition, an elastic member may be provided on the mounting surface side, and the temperature protection device may be pressed against the iron core by the elastic member inserted through the insertion hole.

Further, in the mounting structure of the temperature protection device in each of the above-described embodiments, an example in which the iron core 1 of the electromagnetic device is constituted by two E-shaped iron cores 4 and one I-shaped iron core 5 is exemplified. However, the present invention is not limited to this, and the iron core may be configured by combining a substantially square-shaped iron core and a substantially cross-shaped iron core fitted therein.

[0028]

According to the first aspect of the present invention, the side surface of the outer member located near the one coil facing plate portion of the outer member and located between the two coils is provided. And a device insertion hole through which the temperature protection device is inserted in communication with the space between the iron core and the coil facing plate portion, and one of the coil facing plate portions of the temperature protection device inserted from the device insertion hole. Since the pressing means for pressing the temperature protection device to the iron core is provided on the side, the temperature protection device can be incorporated after the electromagnetic device is assembled. Therefore, it is not necessary to manufacture a plurality of types of electromagnetic devices according to the necessity of the temperature protection device.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the effects of the described invention, since the pressing means is an elastic member disposed between the one coil facing plate portion of the outer member and the temperature protection device, the temperature protection device and the electromagnetic device have dimensional variations. Even if there is an elastic member, this can be absorbed and the temperature protection device can be securely brought into close contact with the iron core.

[0030] According to the third aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described above, the pressing means is a protrusion provided on the mounting surface side on which the electromagnetic device is mounted, and the protrusion is inserted into one of the coil facing plates of the outer member located between the two coils. Providing a possible insertion hole facilitates positioning of the electromagnetic device on the mounting surface when the electromagnetic device is mounted on the mounting surface.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a mounting structure of a temperature protection device according to the present invention.

FIG. 2 is an exploded perspective view showing the electromagnetic device and the temperature protection device according to the first embodiment.

FIG. 3 is a plan view of the same iron core alone.

FIG. 4 is a sectional view showing a second embodiment of the mounting structure of the temperature protection device of the present invention.

FIG. 5 is a perspective view showing a mounting structure of a conventional temperature protection device (first conventional example).

FIG. 6 is a perspective view showing another conventional temperature protection device mounting structure (second conventional example).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron core 2 Coil 3 Temperature protection device 9 Outer member 15a Coil facing plate part 15f Device insertion hole 15g Insertion hole 18 Pressing means 18a Projection 18b Elastic member

Claims (3)

[Claims] 1. Two coils arranged on one axis with one end facing each other, an iron core mounted so as to substantially surround the two coils, and a vertical direction of each of the two coils. Mounting structure of the temperature protection device to an electromagnetic device, comprising: an outer member that includes two coil-facing plate portions opposing the outer peripheral side surface and substantially covers the two coils and the iron core around the uniaxial direction. A temperature protection device which communicates with a space between the iron core and the coil opposing plate portion on a side surface of the outer member located near the one coil opposing plate portion of the outer member and between the two coils; And a pressing means for pressing the temperature protection device to the iron core on the side of the one coil facing plate portion of the temperature protection device inserted from the device insertion hole. Characterized by Mounting structure of the temperature protection device. 2. The temperature protection device according to claim 1, wherein the pressing means is an elastic member disposed between one of the coil facing plate portions of the outer member and the temperature protection device. Mounting structure. 3. The method according to claim 1, wherein the pressing unit is a protrusion provided on a mounting surface side on which the electromagnetic device is mounted, and the protrusion is provided on one of the coil facing plate portions of the outer member positioned between the two coils. 2. The mounting structure for a temperature protection device according to claim 1, further comprising an insertion hole that can be inserted.