JPH0739214Y2 - Terminal equipment for electromagnetic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a terminal device for an electromagnetic device in which a connection cover mounted on a flange portion of a coil bobbin is covered with a terminal cover for protection.

[Prior Art] Electromagnetic devices such as ballasts for discharge lamps of lighting fixtures are provided with a terminal device for connecting a coil terminal portion and an external lead wire.

A conventional example of this device is shown in FIGS. In the figure, reference numeral 1 denotes a synthetic resin coil bobbin, which is formed by integrally providing flange portions 1b and 1c at both ends of a winding drum portion 1a, and a coil 2 between the pair of flange portions 1b and 1c.
Is wrapped around. A pair of terminal blocks 3 are integrally projectingly provided on the outer surface of a portion forming one side of the one flange portion 1b. These terminal blocks 3 are arranged side by side in the lengthwise direction of the above-mentioned one side portion, but there are also those that are integrally connected.

A connection terminal 4 is attached to each terminal block 3. To attach the connection terminal 4, press the vertical attachment portion 4a of the connection terminal 4 into the slit-shaped attachment groove 3b formed in the terminal block 3 as shown in FIG. Is done by. The terminal 2a of the coil 2 is connected to the connection terminal 4, and the external lead wire 5 is soldered. The end 2a of the coil 2 is connected to the connection terminal 4 by being sandwiched by folding a tongue piece 4b provided by cutting and raising a part of the upper surface of the connection terminal 4 by 180 ° and spot welding. To be done.

A pair of latching claws 6 is integrally provided on both ends of the flange portion 1b in the lengthwise direction of the above-mentioned portion forming one side. All of these latching claws 6 are directed inward, and the inner surface thereof faces the side surface 3a of the terminal block 3 at a distance.

A terminal cover 7 made of synthetic resin is attached to a portion of the flange portion 1b forming the one side to cover the connection terminal 4 and protect the terminal portion. As shown in FIGS. 5 to 8, the terminal cover 7 is composed of an upper cover portion 7a, left and right end cover portions 7b, and a front cover portion 7c.

The upper cover portion 7a is disposed above the connection terminal 4, and the left and right end cover portions 7b are integrally provided in a row at right angles to the left and right edges of the upper cover portion 7a and face each other. . The front cover portion 7c is integrally provided so as to be continuous at right angles to the front edges of the cover portions 7a and 7b. Therefore, the terminal cover 7 is open at the rear surface facing the front cover wall 7c and the lower surface facing the upper cover portion 7a.

A pair of lead wire insertion grooves 8 is formed in the front cover wall 7c from the lower surface side thereof. When the terminal cover 7 is attached to the one flange portion 1b, the external lead wire 5 is passed through these grooves 8. A horizontal rib 9 extending in the front-rear direction is integrally formed on the lower edge of the outer surface of each end cover wall 7b so as to project therefrom. Furthermore each end cover wall
On the rear edge side of the outer surface of 7b, there is integrally formed a claw receiving portion 10 composed of a protrusion extending in the vertical direction.

The claw receiving portion 10 is engaged with the latch claw 6, and the terminal cover 7 is attached to the flange portion 1b so as to cover the connection terminal 4 and the like by these engagements. The engagement is
As shown by the arrow in FIG. 7, the end cover wall 7b of the end cover 7 is inserted between the side surface 3a of the terminal block 3 and the inner surface of the latch claw 6, and the terminal cover 7 is provided with a flange portion. It is made by pushing it to the 1b side. Then, as shown in FIG. 8, the latch claw 6 and the claw receiving portion 10 are engaged with each other. Therefore, the terminal cover 7 is attached so as to cover the connection terminals 4 and the like in the portion forming the above-mentioned one side of the flange portion 1b.

[Problems to be Solved by the Invention] As described above, in the conventional terminal device, the terminal cover 7 is provided.
However, since it has a rectangular box structure in which the rear surface and the lower surface are open, it is relatively easy to elastically deform the left and right end cover walls 7b. The end cover wall 7b is engaged with the retaining claw 6, and the inner surface (this surface is a flat surface) and the terminal block 3 are engaged with each other.
A gap G (see FIG. 8) is provided between and.

Therefore, the end cover portion 7b of the attached terminal cover 7 is
On the other hand, when an external force in the direction of the arrow in FIG.
The end cover wall 7b is easily deformed as shown in FIG.
As a result, there is a problem that the latch claw 6 and the claw receiving portion 10 are disengaged from each other, and the terminal cover 7 may be disengaged from the flange portion 1b.

An object of the present invention is to obtain a terminal device for an electromagnetic device in which the terminal cover is prevented from being accidentally removed.

[Means for Solving the Problems] The present invention provides a pair of terminal blocks integrally formed on one of a pair of flange portions of a coil hobbin, and a side surface of the terminal block with the terminal blocks interposed therebetween. A pair of inward locking claws that are integrally projected from the one flange portion facing each other, connection terminals that are respectively attached to the respective terminal blocks, and an upper cover wall that is provided so as to cover these connection terminals.
The left and right end cover walls that are integrally connected to the left and right edges of the upper cover wall and face each other, and the front end that is integrally connected to the front edges of the upper cover wall and the left and right end cover walls and that has lead wire insertion grooves A terminal cover formed by a partial cover wall, and a claw receiving portion that is integrally formed on the outer surface of the end cover wall that is inserted between the terminal block and the latch claw and that is engaged with the latch claw. Applied to the terminal device of the electromagnetic equipment. Further, in order to achieve the above-mentioned object, a convex portion that is close to or abuts the side surface of the terminal block is integrally provided on the inner surface of the end cover wall.

[Operation] According to the present invention, by engaging the latching claw with the claw receiving portion of the terminal cover, the terminal cover is attached to the flange portion, and at the same time, the convex portion formed on the inner surface of the terminal cover wall has the latching claw. Is inserted between the inner surface of the terminal block and the side surface of the terminal block, and the convex portion approaches or abuts the side surface of the terminal block. Thereby, the end cover wall of the terminal block is provided so as to be sandwiched between the latching claw and the terminal block. Therefore, no gap is formed between the end cover wall and the side surface of the terminal block to the extent that the engagement claw and the claw receiving portion are disengaged from each other, and the end cover wall does not apply external force to the inside. When received, this cover wall can be prevented from moving toward the terminal block.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the description, the same components as those of the conventional terminal device described with reference to FIGS. 4 to 9 are denoted by the same reference numerals and the description thereof will be omitted. This will be described below.

The difference between this embodiment and the conventional example is the configuration of the inner surface of the end cover wall 7b of the terminal cover 7.

That is, the protrusions 11 are integrally formed on the inner surfaces of the left and right end cover walls 7b. The convex portion 11 is provided at the rear end portion of the end cover wall 7b, in other words, at the end portion on the side of the one flange portion 1b, which extends in the up-down direction like the claw receiving portion 10. The thickness dimension A from the tip end surface of the protrusion 11 in the protruding direction to the tip end surface of the claw receiving portion 10 in the protruding direction A
Is the inner surface of the latch claw 6 and the side surface 3a of the terminal block 3 facing the inner surface.
It is set to be equal to or slightly smaller than the dimension B between and. Further, a taper surface 11a (see FIG. 2) is formed on the convex portion 11 on the side of the flange portion 1b.

In the terminal device having such a configuration, in order to attach the terminal cover 7 to the one flange portion 1b, as shown by the arrow in FIG. 2, the end cover wall 7b of the end cover 7 is
The terminal cover 7 may be pushed into the one flange portion 1b side so as to be inserted between the side surface 3a of the terminal block 3 and the inner surface of the latch claw 6.

Then, the latch claw 6 is elastically deformed so as to bend outward, and the latch claw 6 is restored to the original state immediately after the claw receiving portion 10 has passed over the claw portion. Therefore, as shown in FIG. 1, the latch claw 6 and the claw receiving portion 10 are engaged with each other, and the connection terminal 4
The terminal cover 7 is attached to the flange portion 1b by covering the above.

In this device, since the convex portion 11 has the tapered surface 11a, the end cover wall 7b of the end cover 7 easily enters between the side surface 3a of the terminal block 3 and the inner surface of the latch claw 6. .

Then, by the above attachment, the protrusion 11 of the end cover 7b is
The portion provided with the claw receiving portion 10 enters between the side surface 3a of the terminal block 3 and the inner surface of the latch claw 6, and the convex portion 11 forms the terminal block 3
Abut or approach the side surface 3a. The state is shown in FIG.

Therefore, a gap is formed between the end cover wall 7b and the terminal block 3 that allows the end cover wall 7b to move in the direction of the terminal block 3 to the extent that the latching claw 6 and the claw receiving portion 10 are disengaged. Never. Therefore, since the terminal block 3 is used as a stopper via the convex portion 11, the end cover wall 7b of the mounted terminal cover 7 is subjected to an external force that pushes the end cover wall 7b inward, the end cover 3b. It is possible to prevent the wall 7b from being deformed so as to move toward the terminal block 3.

Therefore, the attached state of the terminal cover 7 can be reliably retained, and the terminal cover 7 can be prevented from being accidentally detached despite the action of the external force.

[Effect of the Invention] According to the present invention described above, the flange portions are provided on the inner surfaces of the left and right end cover walls provided with the terminal covers that cover the connection terminals and are attached to one flange portion of the coil bobbin. Between the terminal block to which the connection terminal is attached and the latching claw that is projectingly provided on the flange portion and engages with the claw receiving portion on the outer surface of the end cover portion, and comes close to the side surface of the terminal block or The terminal block is used as a stopper through the convex part by the protruding convex part that abuts, and the end cover wall is not deformed in the direction of the terminal block by an external force that pushes the end cover wall inward. , It is possible to prevent the terminal cover from being removed accidentally.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, and FIG. 1 is a plan view of the entire terminal device showing a sectional view of a terminal cover.
FIG. 3 is a plan view of the entire terminal device showing the cross-sectioned terminal cover and its mounting portion separately, and FIG. 3 is a rear view of the terminal cover. 4 to 9 show a conventional example, FIG. 4 is a sectional view around a connecting terminal, FIG. 5 is an exploded perspective view of the entire terminal device, FIG. 6 is a rear view of a terminal cover, and FIG. FIG. 8 is a plan view of the entire terminal device showing the cross-sectioned terminal cover and its mounting portion separately, FIG. 8 is a plan view of the entire terminal device shown in cross section of the terminal cover, and FIG. FIG. 9 is a plan view similar to FIG. 8 shown above. 1 ... Coil bobbin, 1b ... Flange part, 3 ... Terminal block, 3a ... Side of terminal block, 4 ... Connection terminal, 6 ... Latch claw, 7 ... Terminal cover, 7a ... Upper cover wall , 7b …… End cover wall, 7c …… Front cover wall, 8 …… Lead insertion groove, 10 …… Claw receiving part, 11 …… Convex part.

Claims (1)

[Scope of utility model registration request] 1. A pair of terminal blocks integrally formed on one of a pair of flanges of a coil hobbin, and a pair of the terminal blocks, which are placed between them and face a side surface of the terminal block. A pair of inward locking claws integrally projecting from the above, connection terminals respectively attached to the above terminal blocks, and these connection terminals provided to cover the upper cover wall and the left and right edges of the upper cover wall. Is formed by a left and right end cover walls that are integrally connected to each other and face each other, and a front cover wall that is integrally connected to the front edges of the upper cover wall and the left and right end cover walls and that has a lead wire insertion groove. A terminal cover and a claw receiving portion that is integrally formed on the outer surface of the end cover wall that is inserted between the terminal block and the latching claw and that is engaged with the latching claw, wherein the end Cover wall Electromagnetic device terminal device being characterized in that projecting integrally protrusions proximity or in contact with a side surface of the terminal block surface.