JPH02898Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a ballast for a discharge lamp used in a fluorescent lamp apparatus or the like.

[Technical background of the invention and its problems]

Ballasts for discharge lamps are generally built into the lamp body.
It is used by connecting a lead wire connected to a lamp socket or the like to a terminal to which the coil lead wire is connected. Although various techniques have been proposed to enable automatic assembly of discharge lamp ballasts, no discharge lamp ballast that can automate the connection with lead wiring has yet been provided. By the way, the current situation is that they are connected by manual soldering, which is not very workable.

By the way, in order to automate the connection of lead wires to terminals (hereinafter referred to as wiring automation), the terminal position must always be in a constant position relative to a certain reference position. For this reason, the present inventor attempted to position the stabilizer body by pushing it from both sides in the length direction of the case with a pair of left and right positioning jigs, with the stabilizer body housed in the stabilizer case. An air cylinder was used as the position correction jig, but it was difficult to produce the stroke accurately.
For this reason, it was found that the variation in terminal position with respect to the reference position was large, making it unsuitable for practical use.

[Purpose of invention]

Therefore, an object of the present invention is to provide a ballast for a discharge lamp that is suitable for wiring automation.

[Summary of the idea]

That is, in the ballast for a discharge lamp according to the present invention, a pair of core mounting portions are integrally provided on a sheet metal case that houses and fixes a ballast main body provided with an iron core. These protrusions are formed from a rising piece and a core mounting piece bent horizontally from the tip thereof, and are located between a pair of mounting holes provided at both ends of the bottom plate in the longitudinal direction, and
It is located between the core mounting step portions bent and formed on both sides of the bottom plate portion, and is cut up and integrally provided from the bottom plate portion. Then, the height of the core mounting pieces on these core mounting protrusions is set to the same height as the core mounting stepped part, and the dimension between the stopper surfaces of each core mounting protrusion on which the position correction jig is abutted is set as follows: It is characterized by having the same external dimensions as the core along the length of the case.

According to this feature, when positioning the ballast body housed in a case that is immovably supported by the lamp body etc. by pushing it from both sides with a pair of left and right air cylinder positioning jigs, the movement of these jigs is controlled. The stroke can be mechanically regulated to a constant level by being stopped by the contact of the core mounting protrusion, which is integral with the case, with the stopper surface. In addition to this, the dimensions between the stopper surfaces of both core mounting protrusions are the same as the outer dimensions of the core, so the ballast body can be mounted in a case so that its terminals are always in a constant positional relationship with respect to the reference position. Can be positioned inside. Therefore, the discharge lamp ballast of the present invention assembled in this positioned state is suitable for wiring automation. Moreover,
Since the core mounting protrusion is cut and raised from the bottom plate of the case and comes into contact with the core on both sides, the number of parts does not increase and assembly is not complicated as would be the case if separate parts were provided. Of course, since the core mounting protrusion can be used as a heat conduction path from the core to the bottom plate of the case, the heat dissipation characteristics can be improved.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is the ballast main body, which includes a pair of E-shaped cores 2 that are butted against each other, a coil 4 wound around a coil bobbin 3 made of synthetic resin, and a pair of terminals 5. It is formed by The coil 4 is arranged so as to wind around the central leg of the iron core 2, and the terminal 5 is attached to a flange 6 formed on the coil bobbin 3. Terminal 5 is L-shaped,
A slit-shaped clamping groove 7 is formed on one vertical side (in the figure). A lead wire (not shown) from the coil 4 is connected to the other horizontal side of the terminal 5 (in the figure), and a lead wire 8 is connected by an automatic wiring device (not shown). It's summery.

Further, reference numeral 9 in the figure denotes a cover made of sheet metal, which covers the top surface of the ballast main body 1 with the terminal 5 exposed. Connecting pieces 10 are integrally bent at both ends of the cover 5, respectively.

Furthermore, in the figure, reference numeral 11 denotes a case made of sheet metal, in which the stabilizer main body 1 and the cover 9 are housed and fixed. This fixation is achieved by connecting the fastening pieces 13 integrally provided on the upper edges of both side plate parts 12 of the case 11 to the connecting pieces 10.
This is done by caulking it so as to enclose it.
The bottom plate part 14 of the case 11 is integrally formed with core mounting step parts 15 that support the ballast body 1 on both sides thereof, and between these step parts 15, the bottom plate part 14 are provided at both ends in the length direction. A fitting (not shown) such as a rivet for fixing the case 11 to the lamp body (not shown) of the fluorescent lamp is inserted through the mounting hole 16 . Furthermore, a pair of core mounting protrusions 17 are integrally cut and protruded from the bottom plate portion 14 of the case 11 between the step portions 15 and 15 and between the mounting holes 16 and 16.

The core mounting protrusion 17 is formed of a rising piece that stands up substantially at right angles from the bottom plate portion 14 and a core mounting piece that is bent horizontally from its tip. and,
The core mounting protrusion 17 is formed so that the height of the core mounting piece is the same as that of the core mounting stepped portion 15, and the end face, that is, the stopper face located at both ends of the case 11 in the length direction. Dimension A between 18
is set to be the same as the external dimension B of the iron core 2 of the ballast main body 1 along the length direction of the case 11.

In addition, the above-mentioned mounting hole 16 and core mounting protrusion 17
are simultaneously integrally formed on the bottom plate part 14 by press working, so their relative positions remain constant, and in this embodiment, the mounting holes 16 are located within the above-mentioned dimension A from the longitudinal center position of the case 11. , B are spaced apart by a dimension C equal to B. Further, reference numeral 19 in FIGS. 1 and 2 is a position correction jig consisting of an air cylinder.

To assemble the discharge lamp ballast with the above structure,
First, the mounting hole 16 is engaged with a jig (not shown), and the case 11 is held by this jig. In this case, both side plates 12 of the case 11 are in a free state,
They are each open as shown by the two-dot chain line in FIG.
Thereafter, the ballast main body 1 is inserted into the case 11 from above the lamp main body, and the cover 5 is further placed over the ballast main body 1. Next, the lamp body is held in a fixed state by a position correction device (not shown), and then this device is operated. Then, the position correction jigs 19 are moved in the directions of the arrows in FIG. 1 is pressed and moved. Then, the movement of the both position correction jig 19 is as follows:
8, it is mechanically stopped.
That is, the position correction jig 19 is moved by an accurate fixed stroke. As a result, the ballast main body 1 is positioned so as to be flush with the stopper surface 18, and is placed in a fixed position within the case 11. Therefore, for example, the mounting hole 16
If the position is set as the reference position, the above dimensions A,
From the relationship between B and C, the dimension D from the mounting hole 16 to the terminal 5 is always constant. After this positioning, the side plate portion 12 of the ballast main body 1 is pressed as shown by the arrow in FIG. 2 to bring it into close contact with the iron core 2, and then the connecting piece 10 is caulked to fix the iron core 2 and the cover 9. Finally, the discharge lamp ballast assembled in the above order is removed from the jig, set in the lamp body (not shown), and connected by rivets etc. passing through the mounting holes 16, and then exposed. An automatic wiring device (not shown) inserts the lead wire 8 into the clamping groove 7 and stops the terminal 5 of the discharge lamp ballast, and in this state, the horizontal side of the terminal 5 The core wire 8a of the lead wire 8 is automatically soldered to.

In addition, in the discharge lamp ballast having the above structure, since the iron core 2 is brought into surface contact with the core mounting piece of the core mounting projection 17, the flow from the iron core 2 to the bottom plate portion 14 of the case 11 through this projection 17 is Heat conduction is improved, and therefore heat dissipation performance is improved.

In addition, in the above embodiment, the core mounting protrusion 17 is
In the present invention, the core mounting protrusion 17 may be cut and raised into an L-shape in the opposite direction to that of the above embodiment. Of course, depending on the orientation of these core mounting portions 15, the stopper surface is formed from an end surface or a flat surface. In addition, when implementing the present invention, unless it is contrary to the gist of the invention, the ballast main body, iron core, coil, terminal, cover,
Case, bottom plate, core mounting step, core mounting protrusion,
It goes without saying that the specific structure, shape, position, material, etc. of the stopper surface, etc., are not limited to the one embodiment described above, and can be configured and implemented in various ways.

[Effect of idea]

Since the present invention described above has the configuration described in the above-mentioned utility model registration claim, the position correction jig can be moved by a pair of iron core mounting protrusions that are cut out and integrally protruded from the bottom plate of the case. With this regulation, the stabilizer body can be accurately positioned in the fixed position of the case.
Therefore, it is possible to provide a discharge lamp ballast suitable for wiring automation. Furthermore, since the core mounting protrusion includes a rising piece and a core mounting piece that makes surface contact with the iron core, heat conduction from the iron core to the bottom plate of the case is improved, and heat dissipation performance can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal side view, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a perspective view. DESCRIPTION OF SYMBOLS 1... Ballast main body, 2... Iron core, 4... Coil, 5... Terminal, 9... Cover, 11... Case, 14... Bottom plate part, 15... Core mounting step part, 1
6...Mounting hole, 17...Iron core mounting protrusion.

Claims (1)

[Scope of utility model registration request] A ballast body comprising an iron core, a coil, and a terminal, a cover placed over the top surface of the ballast body with the terminals arranged on the top surface of the body exposed, and mounting holes provided at both lengthwise ends, respectively. The bottom plate part has a perforated bottom plate part, and the bottom plate part has core mounting step parts bent and formed on both sides thereof, and these steps support the ballast main body, and the ballast main body is supported by these steps. In a discharge lamp ballast comprising a main body and a sheet metal case that houses and fixes the cover, a pair of core mounting protrusions are provided on the bottom plate of the case between the core mounting parts and between the pair of core mounting protrusions. These core mounting parts are each formed of a rising piece and a core mounting piece bent horizontally from the tip thereof, and the above-mentioned core mounting protrusions are provided between the mounting holes. The height of the core mounting piece should be the same as the height of the core mounting part, and the dimension between the stopper surfaces located on both ends of the core mounting protrusion in the longitudinal direction of the case should be set in the longitudinal direction of the case. A ballast for a discharge lamp, characterized in that the external dimensions are the same as those of the above-mentioned iron core along the lines.