JPS6213794B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mount assembly jig for aligning a pair of lead-in wires supporting a pair of filaments on the same straight line when the lead-in wires are sealed in a valve.

For example, a semi-shielded beam lamp used as a headlight for an automobile is constructed by mounting a halogen light bulb on a reflector whose front surface is covered with a lens. Since such semi-shielded beam lamps usually have a two-game configuration of a passing beam and a running beam, the halogen bulb has a pair of filaments for the passing beam and the running beam in the glass bulb. It is equipped with a filament of.

By the way, since the tube wall temperature of such halogen light bulbs becomes extremely high when lit, they use high melting point glass such as quartz glass, and the sealing part is used in general incandescent light bulbs. It does not use a glass flare stem, but uses a crush seal called a pinch seal. For this reason, in the above halogen bulb, it is necessary to align the four lead-in wires connected to each filament on the same straight line on a single crushing sealing surface, and in the case of a sealed beam lamp, Since strict light distribution characteristics are required, it is necessary to adjust the mutual positions of the filaments within the bulb with high precision.

Conventionally, in order to align four lead-in wires that individually support a pair of filaments on the same straight line, the following procedure is performed. That is, a pair of lead-in wires are attached to the lead-in wire mounting holes of a single-core mount jig, and a coil filament is installed between the tips of these lead-in wires to mount a desired mount, for example, a mount for a traveling beam. After making a mount for the passing beam in the same way, prepare a 2-core mount jig with four lead-in wire mounting holes on the same straight line, and transfer each of the above mounts to this mount jig. A method of aligning these lead-in wires on the same straight line by changing the lead-in wires of each mount so that they are positioned alternately; After bending the tips of the lead-in wires other than the desired ones so that they do not get in the way when installing the filament on the desired lead-in wires, install the filament between the desired lead-in wires, and then insert the bent lead-in wires. There is a method in which a filament is installed between these while restoring them to their original state. However, all of these methods have drawbacks; first, according to the former method, the mount, which is individually manufactured using a 1-core mounting jig, must be transferred to a 2-core mounting jig, which increases the number of man-hours. At the same time, the yield increases, making it unsuitable for mass production. In addition, it is difficult to adjust the position of the filament with high precision, and the mount shape tends to vary. Furthermore, in the latter method, since the lead-in wires are bent and then returned to their original shape, the lead-in wires are easily damaged, and as in the above case, it is difficult to accurately set the mutual positional relationship of the filaments. Therefore, in order to set the mutual positional relationship of filaments with high precision,
In addition to requiring a large amount of man-hours and skill to perform the work, it also had problems such as being unsuitable for things that require strict light distribution characteristics, such as automobile headlights.

The present invention has been made based on the above circumstances, and its purpose is to easily and reliably align lead-in wires on the same straight line, and to position a pair of filaments with high precision. The object of the present invention is to provide a mount assembly jig that is suitable for mass production and that reduces man-hours and yield.

The present invention will be explained below based on an embodiment shown in FIGS. 1 to 4. The mount assembly jig in this embodiment is used when manufacturing a halogen light bulb used in a semi-shielded beam lamp as a headlight of an automobile. First, this halogen light bulb will be explained with reference to FIG. 1. 1 is a bulb made of quartz glass or the like;
Inside this bulb 1 is a traveling beam filament 2.
A filament 3 for a passing beam is individually connected and housed at one end of the lead-in wires 4a, 4b and 5a, 5b. The other ends of these lead-in wires 4a, 4b and 5a, 5b are aligned on the same straight line and sealed in a crushing sealing portion 6 formed by pinch-sealing the open end of the valve 1. At the same time, it is also led outward. Note that 7 indicates an exhaust pipe.

Next, to explain the above-mentioned mount assembly jig according to the present invention, reference numerals 8 and 9 in the figure are a pair of jig halves, and these jig halves 8 and 9 are attached to each other on their opposing surfaces. A pair of fitting protrusions 10a, 10b and fitting recesses 11a, 11b are provided, which can be detachably fitted. These jig halves 8 and 9 have fitting protrusions 10a and 10b and fitting recesses 11a and 1.
In the fitted state of 1b, it is configured to have a substantially box shape as shown in FIG. Also,
Fitting convex portions 10a and 10 in each jig half piece 8 and 9
b is provided with lead-in wire mounting holes 12 into which the lead-in wires 4a, 4b supporting the traveling beam filament 2 and the lead-in wires 5a, 5b supporting the passing beam filament 3 are removably inserted. ing. And these mounting holes 12... mutually,
Fitting protrusions 10a, 10b and fitting recesses 11a, 11
In the fitted state with b, they are positioned on the same straight line along a direction orthogonal to the fitting direction.

On the other hand, each jig half piece 8, 9 has an introduction wire mounting hole 12.
Chucks 13 for removably supporting lead-in wires 4a, 4b and 5a, 5b inserted into the mounting holes 12 are built in at positions corresponding to the mounting holes 12. These chucks 13 will be explained with reference to FIG. 4. Reference numeral 14 is a chuck main body, which has one end provided in each jig half piece 8, 9 with a mounting hole 12.
. . , the other end is housed in a accommodating portion 15 that opens on the side surface of the jig halves 8 and 9. The chuck main body 14 is rotatably supported by a pivot 16, and one end surface of the chuck body 14 is arranged so that it can move forward and backward into the mounting hole 12. Coil spring 17
The one end surface is biased in the direction in which it is present in the mounting hole 12. Therefore, the above introduction line 4
a, 4b and 5a, 5b are chuck body 14
It is designed to be held between one end surface and the inner surface of the mounting hole 12, and when the lower end of the other end of the chuck body 14 is pressed in the direction of arrow A against the biasing force of the compression coil spring 17, the one end surface are separated from the lead-in lines 4a, 4b and 5a, 5b, and their support is released.

In addition, on the abutting surfaces of the fitting convex portions 10a, 10b of each jig half piece 8, 9, lead-in wires 4a, 4 are provided.
A groove 18 having a semicircular cross section along the direction of insertion of the grooves 1 and 5a and 5b is provided.
8 and 18 are the fitting protrusions 10a and 10b and the fitting recess 1
facing each other in the fitted state with 1a and 11b,
An insertion hole 19 for inserting the exhaust pipe 7 is formed.

Next, a method for manufacturing a halogen light bulb using the mount assembly jig configured as described above will be described. First, with the jig halves 8, 9 separated, the lead-in wires 4a, 4b and 5a, 5b are inserted into the lead-in wire mounting holes 12... of each jig half-piece 8, 9, and implanted through the chucks 13... Fixed in the set state. After the filament 3 for the low beam is installed between the tip portions of the lead-in wires 5a and 5b, the middle portion of the lead-in wires 5a and 5b is bent by a predetermined distance to form a mount for the low beam.
Similarly, after installing the filament 2 for the running beam between the tips of the lead-in wires 4a and 4b, the middle part of these lead-in wires 4a and 4b is moved in a direction substantially opposite to the lead-in wires 5a and 5b for the above-mentioned passing beams. It is bent by a predetermined dimension to form a mount for the traveling beam. After each mount is formed in this way, the fitting convex portions 10a, 10b, the fitting concave portion 11a,
11b and align the lead-in lines 4a, 4b and 5a, 5b on the same straight line, thereby positioning the traveling beam filament 2 and the passing beam filament 3 with respect to each other. Furthermore, the valve 1 is placed so as to cover each of these filaments 2 and 3, and the exhaust pipe 7 is inserted into the valve 1 through the insertion hole 19. Then, the portion of the bulb 1 to be crushed and sealed is heat-softened and crushed to form a halogen light bulb as shown in FIG.

Therefore, as can be seen from the above explanation, the lead-in lines 4a, 4b and 5a, 5b of the individually manufactured mounts can be aligned on the same straight line by simply fitting the jig halves 8, 9 together. It is now possible to move the mount like before,
Since there is no need to bend the lead-in wires 4a, 4b and 5a, 5b once and then return them to their original positions, the filaments 2, 3 can be positioned with high precision, and variations in mount shape are also reduced. For this reason, it is especially advantageous when manufacturing products that require strict light distribution characteristics, such as halogen light bulbs used in semi-shielded beam lamps for automobile headlights.

At the same time, if you use this mount assembly jig, you don't need to be skilled to do the work.
Since there is no need to store semi-finished products, the yield is reduced and manufacturing efficiency is improved, making it suitable for mass production.

In the above embodiment, a groove is formed on the abutting surface of one of the fitting convex parts of each jig half,
An insertion hole for inserting an exhaust pipe was formed in a state where the jig halves were fitted together, but as shown in FIG. 21, 21 are provided, jig halves 8, 9
These stepped portions 21, 21 in the fitted state
An insertion hole 22 for inserting an exhaust pipe may be formed between the two. In this case, since the insertion hole 22 is separated along the fitting direction of the jig halves 8 and 9, the exhaust pipe 7 is installed in a predetermined position in advance, and the exhaust pipe 7 is inserted into the step part 2.
By fitting the jig halves 8 and 9 so as to sandwich them between 1 and 21, the exhaust pipe 7 can be attached to the mount assembly jig at the same time as this fitting, making the installation work of the exhaust pipe 7 easier. It can be carried out.

Furthermore, the direction in which the lead-in wire attachment holes are aligned does not necessarily have to be orthogonal to the fitting direction of the jig halves, but may just be a direction that intersects with the above-mentioned fitting direction.

Furthermore, the mount assembly jig of the present invention is not limited to the production of halogen bulbs for automobile headlights, but for example, for the production of automobile turn signal lamps,
It can be applied to the production of light bulbs for instrument panel lighting or other than automobiles, ie light bulbs with a pair of filaments in the bulb.

As explained above, the present invention provides a pair of jig halves having fitting portions that can be fitted into each other, in which a lead-in wire for supporting a filament is removably inserted, and the fitting portions of the fitting portions are In this state, a lead-in wire mounting hole is provided which is located on the same straight line along a direction intersecting this fitting direction, and a chuck for removably supporting the lead-in wire is provided, and these fitting holes are provided in the fitting part. Since we provided an insertion hole for inserting the exhaust pipe that is formed in the mating state, it is possible to align the lead-in wires that individually support a pair of filaments on the same straight line by simply fitting the jig halves together. Become. Therefore, there is no need to relocate the lead-in wires that support the filaments, or to bend the lead-in wires and then return them to their original positions, as is the case in the past, making it possible to position the filaments with each other with high precision. , damage to the lead-in wire can also be prevented.
In addition, if this mount assembly jig is used, no skill is required for the work, and there is no need to store semi-finished products, resulting in excellent effects such as reduced yield and improved manufacturing efficiency.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention. Figure 1 is a perspective view of a halogen light bulb, Figure 2 is a perspective view of the jig halves before they are fitted, and Figure 3 is a perspective view of the jig halves. A perspective view showing the mated state, Figure 4 is in Figure 2.
A sectional view taken along the line, and FIG. 5 is a perspective view showing a modification. 2, 3...Filament, 4a, 4b, 5a, 5
b...Introduction line, 8, 9...Jig half piece, 10a, 10b
...Fitting convex portion, 11a, 11b...Fitting concave portion, 12...
Introductory wire mounting hole, 13... chuck, 19, 22... insertion hole.

Claims (1)

[Claims] 1 Jig halves having fitting parts that can be removably fitted to each other, and a pair of lead-in wires that support the filament provided in each of these jig halves are removably inserted, and the above-mentioned fitting a lead-in wire mounting hole located on the same straight line along a direction intersecting the mating direction in the fitted state of the parts, and a lead-in wire mounting hole provided in each of the jig halves corresponding to the lead-in wire mounting hole. 1. A mount assembly jig comprising: a removably supporting chuck; and an insertion hole for inserting an exhaust pipe formed in the fitting portion in the fitted state.