JPH0897056A - Electromagnetic equipment - Google Patents

Abstract

PURPOSE: To enhance a heat-sensitive protecting device in manufacturing properties and thermal responsibility by a method wherein the engaging part of a terminal pad is engaged with an engaging part provided to flanges provided to both ends of a drum, and a heat-sensitive protecting device connected to a terminal piece provided to the terminal pad so as to be electrically connected to a coil is pinched between the terminal pad and the coil. CONSTITUTION: Terminal pieces 14 connected to the lead-out wire of a coil 2 are fixed to a terminal pad 5, and the engaging parts 21 of the terminal pad 5 are engaged with engaging parts 11 provided to flanges 8 located at both ends of a drum 7 where a coil 2 of a bobbin 4 is wound around. A thermal sensor 17 of a heat-sensitive protecting device main body 16 connected to the terminal pieces 14 of the terminal pad 5 is pinched between the terminal part 13 of the terminal pad 5 and the peripheral surface of the coil 2, and the terminal pad 5 is mounted on a bobbin 4 for the formation of a coil bobbin 3. By this setup, a heat-sensitive protecting device is covered with a terminal pad and brought into direct contact with a coil, so that it is improved in thermal responsibility and manufacturing properties.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic device equipped with a heat protection device.

[0002]

2. Description of the Related Art Conventionally, as an electromagnetic device equipped with a heat-sensitive protective device for preventing damage due to a temperature rise or a rare short circuit at the time of abnormality or at the end of its life, for example, Japanese Utility Model Sho 60
The structures described in Japanese Patent Publication No. 15311 and Japanese Utility Model Publication No. 55-22750 are known.

In the electromagnetic device disclosed in Japanese Utility Model Publication No. 60-15311, a heat-sensitive protective device is fixed in close contact with the side surface of the coil on the upper surface of the iron core.

However, this actual public sho 60-6031
The device described in Japanese Patent Publication No. 1 requires a member such as a tape for fixing the heat-sensitive protective device, which lowers the productivity.
Also, since only one side of the heat-sensitive protection device is in contact with the coil, heat conduction from the coil to the heat-sensitive protection device is slow, and if the temperature of the coil rises sharply due to a rare short circuit, the heat rises to the heat-sensitive protection device. There is a problem that it does not conduct immediately and the thermal response of the heat-sensitive protective device deteriorates.

In the electromagnetic device disclosed in Japanese Utility Model Publication No. 55-22750, a mounting body having a recess is provided on one outer surface of the winding body of the coil bobbin, and a heat-sensitive protection device is incorporated in the recess of the mounting body. After that, the winding is wound and the coil is wound.

[0006] However, this real public Sho 55-2275
In the device described in Japanese Patent No. 0, only one outer surface of the winding body of the coil bobbin bulges, which complicates the winding work of the coil wire, and the heat-sensitive protection device located between the coil and the winding body is used as the coil. There is a problem that the wiring work for connecting in series becomes complicated.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The electromagnetic device described in Japanese Patent No. 5311 has problems that the mounting work of the heat-sensitive protective device is complicated and the manufacturability is deteriorated, and that the thermal response of the heat-sensitive protective device is poor, and is disclosed in Japanese Utility Model Publication No. 55-22750. The described electromagnetic device has a problem that the winding work of the coil and the wiring of the heat-sensitive protection device are complicated and the productivity is lowered.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic device having improved manufacturability and thermal response of the heat-sensitive protection device.

[0009]

SUMMARY OF THE INVENTION An electromagnetic device according to the present invention is a tubular winding body around which a coil is wound around an outer peripheral surface, and flange-shaped flanges provided at both axial ends of the winding body. An electromagnetic device including a coil bobbin having a terminal portion and a terminal block portion provided on the collar portion and connected to a lead wire of the coil, an engaging portion provided on the collar portion. A locking portion provided on the terminal base portion and locked to the engaging portion, and the locking portion connected to the terminal piece so as to be electrically connected in series to the coil, the engaging portion being the engaging portion. And a heat-sensitive protection device that is sandwiched between the terminal block part and the coil when the terminal block part is mounted on the collar part.

[0010]

In the electromagnetic device of the present invention, the locking portion of the terminal block portion is engaged with the engaging portions provided on the collar portions at both ends of the winding drum portion so that the terminals are electrically connected in series to the coil. Since the thermal protection device connected to the terminal piece of the base is sandwiched between the terminal base and the coil, the thermal protection device is covered by the terminal base and directly contacts the coil, improving the thermal response of the thermal protection device. At the same time, it is easy to form and the manufacturability is improved by merely engaging the engaging portion of the terminal block portion to which the heat-sensitive protection device is attached in advance with the engaging portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an electromagnetic device of the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 3, reference numeral 1 denotes an electromagnetic equipment main body, and the electromagnetic equipment main body 1 is a power transformer or the like arranged in a lighting device of a lighting fixture (not shown), and a core (not shown) and a core attached to the core. And a coil bobbin 3 around which the coil 2 is wound.

The coil bobbin 3 is composed of a bobbin portion 4 and a terminal block portion 5. The bobbin portion 4 is integrally molded of synthetic resin or the like as shown in FIG. 7 and flanges 8 and 8 projecting outward from both axial end edges of the winding barrel portion 7 in a flange shape substantially vertically. Further, in the bobbin portion 4, a copper wire (not shown) is wound around the winding drum portion 7 to wind the coil 2, and a winding insulating tape (not shown) is provided on the outer peripheral surface of the coil 2.

Further, a notch recess 10 which is recessed outwardly is provided at one outer peripheral edge of one flange portion 8 of the bobbin portion 4 so that a lead wire (not shown) of the coil 2 can be inserted. Has become. Further, the pair of collar portions 8 and 8 has a notch recess 10
A plurality of substantially square through-hole-shaped engaging portions 11, 11 are formed in the vicinity of.

On the other hand, the terminal base portion 5 is made of synthetic resin or the like like the bobbin portion 4 and has a terminal portion 13 formed in a substantially rectangular flat plate shape. In the vicinity, a plurality of terminal strips 14 formed of a conductive material in the shape of a flat plate strip are integrally provided so as to project in parallel to one surface side. Further, the terminal block portion 5 is provided with a heat-sensitive protection device body 16.

The thermal protection device body 16 is a thermoswitch such as a bimetal switch or a positive temperature coefficient thermistor, and has electrodes 18 and 18 extending from both ends of a rectangular parallelepiped thermosensitive portion 17. And, the longitudinal direction of the heat sensitive portion 17 is the terminal portion.
Electrodes 18, 18 at both ends along the width direction of 13 are connected to the terminal pieces 14, 14 by solder 19, and the thermal protection device body 16 is attached to the terminal block portion 5 so as to straddle the terminal portion 13.

In addition, in the terminal block portion 5, from both sides of the terminal portion 13 toward the side where the heat-sensitive portion 17 of the heat-sensitive protection device body 16 is located, corresponding to the engaging portions 11, 11 of the collar portions 8, 8. A plurality of locking portions 21, 21 are formed to project. Further, the locking portions 21, 21 have locking claw portions 22, which are hooked to the engaging portions 11, 11 at the tips thereof.
22 are provided. The distance between the engaging portions 21, 21 facing each other in the width direction of the terminal portion 13 is approximately the same as the distance between the outer surfaces of the collar portions 8, 8 of the bobbin portion 4, and the distance between the engaging claw portions 22 is small. The protruding height is formed so as not to be higher than the thickness dimension of the collar portion 8 of the bobbin portion 4.

In the terminal block portion 5, the engaging portions 21, 21 are engaged with the engaging claw portions 22, 22, the engaging portions 11, 8 of the collar portions 8, 8 of the bobbin portion 4, respectively.
The coil bobbin 3 is configured by being locked to the coil 11, the heat-sensitive portion 17 of the heat-sensitive protective device body 16 is sandwiched between the coil 2 and the terminal portion 13 and attached to the bobbin portion 4.

On the other hand, the core is formed by a pair of iron cores made of laminated steel plates or the like sandwiching the coil bobbin 3 and being opposed to each other.

The lead wire of the coil 2 is connected to the terminal block 5
The electromagnetic protection device main body 1 is formed by connecting to the terminal pieces 14, 14 in series with the thermal protection device main body 16.

Next, the operation of the above embodiment will be described.

First, the bobbin portion in which the coil 2 is wound around the winding drum portion 7 in advance by elastically deforming the locking portions 21 of the terminal block portion 5 in which the heat-sensitive protective device main body 16 is attached to the terminal pieces 14 in advance. 4, so that the locking claw portions 22 and 22 are slid on the outer surfaces of the collar portions 8 and 8 so as to sandwich 4, and are engaged with the engaging portions 11 and 11.
The terminal block portion 5 is attached to the bobbin portion 4 to form the coil bobbin 3. By attaching the terminal block portion 5 to the bobbin portion 4, the heat-sensitive portion 17 of the heat-sensitive protection device body 16 attached to the terminal block portion 5 is wound around the terminal portion 13 of the terminal block portion 5 and the bobbin portion 4. It is clamped by the outer peripheral surface of the.

Then, the coil bobbin 3 is sandwiched between a pair of iron cores (not shown), the iron cores are joined to form a core, and the lead wire of the coil 2 is connected to the terminal pieces 14 and 14 of the terminal block portion 5 by the heat-sensitive protection device body 16. The electromagnetic device body 1 is formed by connecting in series.

According to the above embodiment, the coil 2 of the bobbin portion 4 is wound around the engaging portions 21 and 21 of the terminal base portion 5 to which the terminal pieces 14 and 14 to which the lead wires of the coil 2 are connected are attached. Engaged with the engaging portions 11, 11 provided on the collar portions 8, 8 at both ends of the winding drum portion 7,
Thermal protection device body connected to the terminal pieces 14, 14 of the terminal block 5
16 heat-sensitive parts 17 are sandwiched between the terminal part 13 of the terminal block part 5 and the outer peripheral surface of the coil 2, and the terminal block part 5 is attached to the bobbin part 4 to form the coil bobbin 3.
Since the heat-sensitive part 17 of 16 is covered with the terminal part 13 of the terminal block part 5 and directly contacts the coil 2, the thermal responsiveness of the heat-sensitive protector body 16 can be improved and the heat-sensitive protector body 16 can be previously prepared.
The engaging portions 21 and 21 of the terminal block portion 5 to which the
The electromagnetic device main body 1 can be easily formed by only engaging with, and manufacturability can be improved.

In the above-mentioned embodiment, the core is provided and explained, but it is also possible to use one without a core.

Further, a locking portion 21 having a locking claw portion 22 serving as an engaging portion is formed so as to project from the collar portions 8 of the bobbin portion 4, and a through hole serving as a locking portion provided in the terminal block portion 5 is formed. The same effect can be obtained even if the engaging portion 11 is locked.

Next, another embodiment will be described with reference to FIGS. 6 to 9.

In the embodiment shown in FIGS. 6 to 9, a rectangular plate-shaped holding plate portion 31 is formed substantially vertically on the terminal portion 13 of the embodiment shown in FIGS. 1 to 5, and this holding plate portion 31 is formed. Locking part 21,
The terminal block portion 32 is formed by projecting 21 and the pressing plate portion 31 is formed so as to face the outer peripheral surface of the coil 2.

Then, the electrodes 18, 18 of the heat-sensitive protection device body 16 are arranged so that the heat-sensitive part 17 of the heat-sensitive protection device body 16 is located along the longitudinal direction of the holding plate portion 31 of the terminal block 32.
The thermal protection device main body 16 is attached to the terminal block portion 32.

Further, when the engaging portions 21, 21 of the terminal base portion 32 are engaged with the engaging portions 11, 11 of the bobbin portion 4 to attach the terminal base portion 32 to the bobbin portion 4, the heat-sensitive portion 17 Is clamped between the holding plate portion 31 of the terminal block portion 5 and the outer peripheral surface of the coil 2.

[0031]

According to the electromagnetic device of the present invention, the engaging portions of the terminal block portion are engaged with the engaging portions provided on the collar portions at both ends of the winding drum portion,
Since the thermal protection device connected to the terminal piece of the terminal block is sandwiched between the terminal block and the coil, the thermal protection device is covered by the terminal block and directly contacts the coil, so the thermal response of the thermal protection device is improved. In addition to being improved, it can be easily formed only by engaging the engaging portion of the terminal block portion to which the heat-sensitive protection device is attached in advance with the engaging portion, and the manufacturability can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an electromagnetic device of the present invention.

FIG. 2 is a plan view showing a situation in which the above terminal block part is attached to a bobbin part.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of the same.

FIG. 5 is a plan view showing the above terminal block portion.

FIG. 6 is a side view showing another embodiment of the electromagnetic device of the present invention.

FIG. 7 is a plan view showing a situation in which the above terminal block portion is attached to the bobbin portion.

FIG. 8 is a side view of the same.

FIG. 9 is a plan view showing the above terminal block portion.

[Explanation of symbols]

 1 Electromagnetic device main body 2 Coil 3 Coil bobbin 5,32 Terminal block part 7 Winding drum part 8 Collar part 11 Engagement part 14 Terminal piece 16 Thermal protection device main body 21 Locking part

Claims (1)

[Claims] 1. A tubular winding drum portion around which a coil is wound around an outer peripheral surface, flange-shaped flange portions provided at both axial ends of the winding drum portion, and the coil provided on the flange portion. In an electromagnetic device including a coil bobbin having a terminal block portion on which a terminal piece to which the lead wire of is connected is disposed, an engaging portion provided on the collar portion, and the engaging portion provided on the terminal block portion. A locking portion to be locked to the terminal portion, and the terminal block connected to the terminal piece so as to be electrically connected in series to the coil, and the locking portion is engaged with the engaging portion. An electromagnetic device comprising: a thermal protection device that is sandwiched between the terminal block portion and the coil when a portion is attached.