JP2534709Y2 - Lead wire connecting device for discharge lamp ballast - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire connecting device for a discharge lamp ballast.

[0002]

2. Description of the Related Art Lead wire connecting devices for discharge lamp ballasts include:
As shown in FIG. 10, external terminals 2 protrude outward from ballast 1,
A terminal block 4 incorporating a connecting terminal 3 connected by fitting to the external terminal 2 is provided, and a pair of fitting portions of the connecting terminal 3 is provided.
5, the external terminal 2 of the ballast 1 is removably fitted, and the external lead wire 7 is inserted through the lead wire insertion port 6 of the terminal block 4, thereby opening the bent piece 9 of the elastic holding portion 8.
The external lead 7 is inserted into the elastic holding portion 8 by elastic deformation of the elastic holding portion 8 as shown by a chain line.
8 makes it elastically clamped.

In this type of conventional lead wire connecting device, as shown in FIG. 1, the connecting terminal 3 is fixed to the terminal block 4, and the elastic holding portion 8 of the connecting terminal 3 has the lead wire insertion opening 6 formed therein. The formed terminal block 4 was in contact with the inner surface of the front wall 11.

[0004]

Therefore, conventionally, when the external lead wire 7 is inserted from the lead wire insertion opening 6 of the terminal block 4, the elastic holding portion 8 is not connected to the front wall 11 of the terminal block 4.
Since it is in contact with the inner surface, the bent piece 9 to the curved piece 13 of the elastic holding piece 8 cannot be elastically deformed outward, and therefore the elastic holding section 8 can be easily elastically deformed. As a result, a large force was required to insert the external lead wire 7, and the connection of the external lead wire 7 could not be made smoothly.

The present invention has been made in view of the above problems, and is intended to easily connect an external lead wire with a weak insertion force.

[0006]

The technical means of the present invention for solving this technical problem is that an external terminal 18 projects outward from a ballast 17 and is connected to the external terminal 18 by fitting. A terminal block 19 incorporating the connection terminal 45 is provided, and the connection terminal 45 is elastically clamped to elastically clamp the lead wire 57 by inserting an external lead wire 57 into a lead wire insertion opening 55 of the terminal block 19. In the connection device for a discharge lamp ballast provided with the part 47, the connecting terminal 45 is slightly separated from the lead wire insertion port 55 side to the ballast 17 side when the lead wire is inserted,
The point is that it is incorporated movably with respect to the terminal block 19.

[0007]

[Function] When connecting the external terminal 18 of the ballast 17 and the connection terminal 45 of the terminal block 19, the terminal block 19 is moved closer to the ballast 17 and the external terminal 18 is connected to the fitting portion 48 of the connection terminal 45. At this time, the external terminal 48 connects the connecting terminal 45
Is pushed outward, the connecting terminal 45 moves to the front position as shown in FIG. 2, and the elastic holding portion 47 comes into contact with the inner surface of the front wall 53 of the terminal block 19, immediately behind the lead wire insertion port 55. Located in.

Next, when connecting the external lead wire 57 to the connection terminal 45, the external lead wire 57
As shown in FIG. 1, the connecting terminal 45 is pressed by the external lead wire 57 to move from the front position to the rear position by the distance b, and the external lead wire 57 is moved by the elastic holding portion of the connecting terminal 45. It is elastically held by 47. At this time, the elastic holding portion 47
Is separated from the lead wire insertion port 55 to the ballast 17 side, the elastic holding portion 47 can be elastically deformed also to the lead wire insertion port 55 side, and the elastic holding portion 47 is easily elastically deformed. The lead wire 57 can be smoothly held by the elastic holding portion 47 with a small insertion force. According to the experimental results, the insertion force of the external lead wire 57 required to connect the external lead wire 57 was 0.95 kgf instead of the conventional insertion force of 0.65 kgf.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. In FIG. 4, a ballast 17 has four external terminals 18 projecting outward. 19 is a terminal block attached to the ballast 17. The ballast 17 is configured as shown in FIG. That is, the ballast 17 is a ballast body.
21 and a ballast case 22 for accommodating the ballast body 21. The ballast body 21 includes a laminated iron core 23 having a Japanese character shape, a pair of coil bobbins 24 and 25, and coils 26 and 27. The coil bobbins 24, 25 are provided with terminal mounting portions 28, 29, and the terminals 30 are fitted to one of the terminal mounting portions 28 so as to protrude outward, and the external terminals 18 are protruded to the other terminal mounting portions 29. It is fitted in a shape. Terminal 30 is a capacitor provided in ballast case 22
The external terminals 18 are drawn out of the side plate 35 of the ballast case 22 to the outside. Compound 36 between ballast case 22, ballast body 21 and capacitors 32 and 33
Is filled.

The terminal block 19 has a block body 38 and a cover 39 as shown in FIGS. 1, 2 and 3, and engages an engaging claw 40 of the block body 38 with a locking recess 41 of the cover 39. And the convex portion of the cover 39 fits into the concave portion 42 of the block body 38.
43, the cover 39 is fixed on the block body 38 by fitting. A connection terminal 45 is held between the block body 38 and the cover 39 so as to be movable in the direction in which the external terminal 31 protrudes.

As shown in FIGS. 6 to 9, the connecting terminal 45 includes a support plate 46, an elastic holding portion 47 bent downward from the outer end of the support plate 46 in an L-shape, and a width of the support plate 46. It has a pair of fitting portions 48 protruding upward from both sides in the direction and curved in an arc shape inward. The elastic holding portion 47 includes a bent piece 49 bent downward from the support plate portion 46, a bent piece 50 bent annularly from the lower end of the bent piece 49, and a folded piece bent upward from the bent piece 50. The bent piece 51 is provided with a lead wire insertion opening 52.

On the front wall 53 of the block body 38, four lead wire insertion ports 55 are provided so as to correspond to the external terminals 48 of the ballast 17, and the lead wire insertion ports 55 There are four connecting terminals 45. Connection terminal 45 is block body 38
2, the elastic holding portion 47 comes into contact with the inner surface of the front wall 53 of the block body 38 as shown in FIG. 2, and the fitting portion 49 is provided with the stopper portion 56 of the cover 39 as shown in FIG. And can be moved to the rear position. The external terminals 18 are removably fitted by the pair of fitting portions 48, thereby connecting the external terminals 18 and the connection terminals 45. When the external terminal 18 is fitted by the connecting terminal 45, the connecting terminal 45 is pressed forward by the external terminal 18 and moves forward to the front position. Also, lead wire insertion port
Folded piece by inserting external lead wire 57 from 55
The external lead wire 57 is inserted into the opening 52 of the 49, and the external lead wire 57 is elastically held between the support plate portion 46 and the elastic holding portion 47 by the elastic deformation of the elastic holding portion 47 as shown in FIG. It has become so. The connecting force between the connection terminal 45 and the external terminal 18 is configured to be smaller than the elastic clamping force of the connection terminal 45 with respect to the external lead wire 57. In addition, the connection terminal 45 moves from the front position to the rear position while sliding backward with respect to the external terminal 31. At this time, since the elastic holding portion 47 of the connecting terminal 45 is separated from the front wall 53 toward the ballast 17 by the distance b, the bent piece 49 and the curved piece 50 of the elastic holding portion 47 are elastically deformed forward by the deformation amount a. Although it deforms, the amount of elastic deformation a toward the front side is set to be smaller than the moving distance b of the connecting terminal 45.

[0013]

According to the present invention, the connecting terminal 45 is mounted movably with respect to the terminal block 19 such that the connecting terminal 45 is slightly separated from the lead wire insertion port 55 toward the ballast 17 when the lead wire is inserted. The external lead wire 57 into the lead wire insertion slot 55
The connecting terminal 45 is separated from the lead wire insertion port 55, and the elastic holding portion 47 of the connecting terminal 45 is easily elasticized.
Therefore, the external lead wire 57 can be easily connected with a small force.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a terminal block in a state where external lead wires are connected according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a terminal block before connecting external lead wires.

FIG. 3 is a front view of a terminal block.

FIG. 4 is a perspective view of a ballast and a terminal block.

FIG. 5 is a sectional view of a ballast.

FIG. 6 is a side view of the connection terminal.

FIG. 7 is a front view of the connection terminal.

FIG. 8 is a bottom view of the connection terminal.

FIG. 9 is a sectional view taken along line AA of FIG. 7;

FIG. 10 is a sectional view of a terminal block portion showing a conventional example.

[Explanation of symbols]

 17 Ballast 18 External terminal 19 Terminal block 45 Connecting terminal 47 Elastic holding part 55 Lead insertion hole 57 External lead

Claims (1)

(57) [Scope of request for utility model registration] An external terminal (18) protrudes outward from a ballast (17), and is connected to the external terminal (18) by fitting.
A terminal block (19) incorporating 5) is provided, and the connection terminal (45) is provided with an external lead wire (57) inserted into a lead wire insertion opening (55) of the terminal block (19). In the connection device for a discharge lamp ballast provided with an elastic holding portion (47) for elastically holding the (57), the connecting terminal (45) is stable from the lead wire insertion opening (55) side when the lead wire is inserted. A lead wire connection device for a discharge lamp ballast, wherein the lead wire connection device is mounted movably with respect to a terminal block (19) so as to be slightly separated from a side of the vessel (17).