JPH04326710A - Electromagnetic apparatus - Google Patents

Abstract

PURPOSE:To provide an electromagnetic apparatus which is not made large-sized and which can prevent a terminal metal fitting from being deformed and pulled out even when a conductor is cut by a terminal. CONSTITUTION:A-coil bobbin 3 is sandwiched and mounted between E-shaped laminated ion cores 2, 2. At the coil bobbin 3, flange parts 5, 6 are formed so as to be faced a terminal stand 7 is formed at the flange part 6. A coil in which extraction wires 12 have been formed is wound and mounted on both ends in which a film has been formed on the coil bobbin 3. At terminal metal fittings 15, winding parts 19 to which the extraction wires 12 of the coil are connected are formed; acute-angle V-shaped conductor cutting parts 20 which have been expanded toward the lower part are cut out and formed near the winding parts 19. The terminal metal fittings 15 are attached to the terminal stand 7; the extraction wires 12 are wound on the winding parts 19; the winding parts 19 are welded by a fusing operation or the like and are connected electrically. The extraction wires 12 are guided to the conductor cutting parts 20; the extraction wires 12 are pulled to the upper part. Thereby, the extraction wires 12 are cut.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic device in which a conductive wire of a coil wound around a coil bobbin is connected to a terminal fitting.

0003

2. Description of the Related Art Conventionally, electromagnetic devices including inductors, etc. are manufactured by connecting a terminal fitting to a coil bobbin on which a coil of conductive wire coated with an insulating film is attached, and after connecting the conductor wire of the coil to the connection part of the terminal fitting. A conductive wire is pressed against the edge portion of the terminal fitting in a direction perpendicular to the edge portion, and the conductive wire is pulled and cut. Then, the electrical connection is achieved by peeling off the insulating coating of the conducting wire connected to the terminal fitting due to the heat generated during soldering.

0004

[Problems to be Solved by the Invention] However, as mentioned above, terminal fittings that cut the conductor wire of the coil at the edge portion of the terminal fitting have no thickness, have a small external shape, and have edges that are not necessarily sharp. Therefore, the conductive wire cannot be easily cut, and there is a problem in that more force than necessary is applied to the terminal fitting, resulting in deformation of the terminal fitting or the terminal fitting coming off.

[0005]Also, in order to protect the terminal fittings from excessive force, it may be possible to increase the thickness of the terminal fittings or to strengthen the part that is attached to the coil bobbin, but as the terminal fittings become larger, electromagnetic equipment becomes larger.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an electromagnetic device that can prevent deformation and disconnection of terminal fittings even if a conductor is cut by a terminal without increasing the size. purpose.

[Configuration of the invention]

[0008]

[Means for Solving the Problems] An electromagnetic device of the present invention includes a coil bobbin on which a coil is attached, and a terminal fitting fixed to the coil bobbin to connect the conductor of the coil, and the terminal fitting has the conductor wire connected to the coil bobbin. A V-shaped conductor cutting portion is formed which is inserted through the conductor and cut by the tensile force of the conductor.

[0009]

[Function] The present invention has a V-shaped conductor cutting section formed on the terminal fitting that is fixed to the coil bobbin and connects the coil conducting wire, so that the coil conducting wire can be easily cut at the conducting wire cutting section. This prevents the terminal fitting from deforming and coming off without applying more force than necessary.

0010

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

In FIGS. 1 and 2, reference numeral 1 denotes an inductor serving as an electromagnetic device, for example, a ballast, and this inductor 1 is made of plastic integrally molded between E-type laminated cores 2, which are welded to face each other. coil bobbin 3
is clamped and attached.

The coil bobbin 3 has a winding trunk 4 formed in the center, and flanges 5 and 6 facing each other on both sides of the winding trunk 4. A terminal block 7 is formed on one flange portion 6 . The terminal block 7 also has a terminal locking hole 8 and a winding body 4 from the terminal locking hole 8 to the terminal locking hole 8.
A notch 9 communicating with is formed.

A coil 11 made of a conductive wire coated with an insulating film is wound around the winding drum 4.
A leader line 12 is formed at both ends of.

Further, 15 is a terminal fitting, and this terminal fitting 1
5, as shown in FIG. 3, on both sides of the elongated flat plate part 16,
The reinforcing portions 17 and 18 are bent in a U-shape along the longitudinal direction. A cut-up winding portion 19 to which the lead wire 12 of the coil 11 is connected is folded back at right angles to the longitudinal direction of the flat plate portion 16 . Furthermore, in the vicinity of this winding portion 19, there is an acute-angled V that expands downward.
A character-shaped conductor cutting portion 20 is cut out.

Then, the lower part of the metal terminal 15 is press-fitted into the terminal locking hole 8, and the lead wire 12 of the coil 11 is wound around the winding part 19 of the metal terminal 15 through the notch 9. 19 is welded by fusing or the like to electrically connect. After that, guide the leader wire 12 to the conductor cutting section 20,
By pulling the leader line 12 upward, the leader line 12 is cut.

Next, the case where the inductor 1 is attached as a ballast to the light bulb type discharge lamp lighting fixture 31 will be explained with reference to FIG. 4.

An opening 33 is formed in one side of the bowl-shaped base body 32, and a locking protrusion 34 is formed to protrude inward from the inner peripheral surface of the opening 33. Further, a base 36 is formed on the base portion 35 of the base body 32, one electrode 37 is formed at the end of the base 36, and the other electrode 38 is formed on the threaded portion.

[0018] Then, the locking protrusion 3 of the opening 33 of the base body 32
4, a stabilizer attachment portion 41 is attached. The ballast mounting portion 41 is a short cylinder whose outer shape is approximately the same as the inner diameter of the locking protrusion 34, and a mounting recess 42 to which the inductor 1 is mounted is formed at one end.
A locking protrusion 43 that is flush with the end face is formed protruding around the end on the side on which the locking protrusion 43 is formed, and the outer shape of the locking protrusion 43 is the same as the inner diameter of the base portion 32 near the locking protrusion 33. They are formed almost identically. After the inductor 1 is housed in the mounting recess 42 of the ballast mounting part 41, the silicone resin 44
is potted, and the inductor 1 is connected to the ballast mounting part 4.
It is fixed at 1. Further, a pair of discharge lamp attachment parts 45, 45 are formed protrudingly from the other end side of the ballast attachment part 41, and a U-shaped discharge lamp 46 is attached between these discharge lamp attachment parts 45, 45. has been done.

This discharge lamp 46 has two conductive wires 47.
. It is connected. In addition, the conductor 48
An insulating tube 50 is attached near the terminal fitting 15.

Further, a light-transmitting lamp cover 51 having an outer diameter approximately the same as the outer diameter of the base body 32 and having a substantially U-shaped cross section is attached. One side of this lamp cover 51 has an opening 5.
2 is formed, and a lamp cover 51 is placed around this opening.
A locking protrusion 53 is formed that protrudes inward from the ballast and has an inner diameter substantially the same as the outer diameter of the stabilizer mounting portion 41 .

The stabilizer mounting portion 41 is then housed in the opening 33 of the base body 32, and the locking protrusion 34 of the base body 32
A locking protrusion 43 of the ballast mounting portion 41 is locked to. Furthermore, the ballast mounting portion 4 is provided in the opening 52 of the lamp cover 51.
1 is inserted, the inner periphery of the locking protrusion 53 of the lamp cover 51 comes into contact with the outer periphery of the ballast attachment part 41, and the locking protrusion 53 of the lamp cover 51 contacts the locking protrusion 34 of the base 32. The lamp cover 51 is attached to the base body 32 in a contacting manner.

In this state, the cap 36 is attached to the discharge lamp socket and the lamp 46 is turned on.

[0023]

According to the electromagnetic device of the present invention, the V-shaped conductor cutting portion is formed on the terminal fitting fixed to the coil bobbin and connecting the coil conductor, so that the coil conductor can be easily cut at the conductor cutting portion. Since the terminal fitting can be cut without increasing the size of the device and without applying unnecessary force to the terminal fitting, it is possible to prevent the terminal fitting from deforming or coming off.

[Brief explanation of drawings]

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

FIG. 2 is a plan view of the same as above.

FIG. 3 is a perspective view showing the same terminal fitting as above.

FIG. 4 is a sectional view showing a discharge lamp lighting fixture to which the above electromagnetic device is attached.

[Explanation of symbols]

1 Inductor 3 as an electromagnetic device Coil bobbin 12 Lead wire 15 as a conductor Terminal fitting 20 Conductor cutting section

Claims (1)

[Claims] [Claim 1] A coil bobbin equipped with a coil;
The coil bobbin has a terminal fitting fixed to the coil bobbin to connect the conductor of the coil, and the terminal fitting is provided with a V-shaped conductor cutting portion that inserts the conductor and cuts it by the tensile force of the conductor. electromagnetic equipment.