JPS6356671B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting inspection method and an inspection apparatus for a baseless metal light bulb used, for example, for lighting an instrument panel.

A baseless light bulb is composed of a socket body and a bulb, and the socket body has a pair of conductive pieces at opposing parts within the bulb insertion hole, and these conductive pieces elastically close the sealing part of the bulb. At the same time as being clamped, electrical contact is made with an external conducting wire attached to the circumferential surface of the sealing portion.

However, such electrical contact between the conductive piece and the external conductor is made by inserting the bulb into the valve insertion hole, but the tolerance of the valve insertion hole and the sealing part, and the insertion and insertion of the valve may be affected. Depending on the posture and the like, when the bulb is inserted, the external conductive wire may be deflected and deformed by the electrical contact portion of the conductive piece, and may come off from this portion, resulting in poor contact.

Therefore, normally, after the lamp is completed, the lamp is energized and inspected to see if it lights up or not, but if the contact between the external conductor and the conductive piece is incomplete, even if the lamp can be lit at the lighting inspection stage, There is a risk that the external conductive wire and the conductive piece may become misaligned due to vibrations during subsequent processes or during transportation, resulting in poor contact and the lighting becomes impossible, resulting in a problem that the reliability of the test is reduced.

The present invention was developed based on the above circumstances, and its purpose is to completely eliminate lamps in which the contact between the external conductor and the conductive piece is incomplete, thereby increasing the reliability of inspection. It is an object of the present invention to provide a lighting inspection method and apparatus for a baseless metal bulb, which can improve the lighting of a baseless metal bulb, prevent damage to the lamp during inspection, and enable stable detection.

The present invention will be explained below based on an embodiment shown in the drawings.

First, the baseless light bulb will be explained based on FIG. 1. Reference numeral 1 indicates a socket body made of synthetic resin.
This socket body 1 has a circular flange portion 2,
A grip portion 3 protruding from the back surface of this flange portion 2
A bulb insertion hole 6 is provided in the center of the surface of the flange portion 2, into which a crushing sealing portion 5 of a bulb 4 of a baseless metal bulb is inserted. At two mutually opposing locations on the circumferential edge of the valve insertion hole 6 are fitting protrusions 7, 7 each having an arcuate cross section and fitting into the circumferential surface of the valve 4.
is installed protrudingly. Note that reference numerals 8 and 8 are locking protrusions for fixing the socket body 1 to, for example, a base plate.

A pair of conductive pieces 9, 9 are attached to mutually opposing portions within the valve insertion hole 6. These conductive pieces 9, 9 are press-molded conductive metal plates, and each has a pair of connecting pieces 10a, 10a facing each other, and a contact piece 10b bent outward. These connecting pieces 10a, 10a are each bent into a substantially dogleg shape toward the other side, and due to their own elasticity, contact and clamp both sides of the crushing sealing part 5 of the valve 4. At the same time, an external conductive wire 1 is connected to a filament 11 attached to both sides of the sealing part 5.
2 and 12.

Therefore, in order to test the lighting of a baseless light bulb having such a structure, first, the crushed sealing part 5 of the bulb 4 is inserted into the bulb insertion hole 6, and this sealing part 5 is inserted into the contact piece part 10a, 10a and 10a, 10a, and the external conductive wires 12, 12 are brought into contact with the contact pieces 10a, 10a for electrical connection. Next, an inspection device is used to oscillate the bulb 4 with respect to the socket body 1 while energizing the lamp.
This will be explained with reference to the drawings to FIG. i.e. 1
3 is a base, and this base 13 has a bracket 1.
A motor 15 is attached to the motor 15 via a pivot pin 17, and a substantially middle portion of an elongated arm 16 is rotatably supported via a pivot pin 17.
The upper end side surface of this arm 16 faces the drive shaft 18 of the motor 15, and the arm 1
6 is provided with a sliding hole 19 along the longitudinal direction. A pivot pin 20 is slidably inserted into the sliding hole 19, and the insertion end of the pivot pin 20 and the drive shaft 18 are connected by a joint member 21. This joint member 21 is provided with a first fixing hole 22 into which the drive shaft 18 is fitted and a second fixing hole 23 into which the pivot pin 20 is fitted, along the axial direction, and these fixing holes 22 and 23 are connected to each other by a fifth hole. As shown in the figure, they are provided eccentrically from each other. Therefore, when the drive shaft 18 is rotationally driven, the pivot pin 20 itself makes a circular motion and slides in the axial direction while rotating within the sliding groove 19 of the arm 16.
The upper and lower ends of the arm 16 are designed to reciprocate in an approximate straight line.

In addition, the code 24...... is the drive shaft 18, the pivot pin 1
This is a fixing bolt that prevents the pivot pin 7 and the pivot pin 20 from coming off.

On the other hand, a slide member 25 is slidably inserted into the lower end side peripheral surface of the arm 16. Slit-shaped openings 26, 26 are provided at opposing portions on both sides of the approximately middle portion of the slide member 25, and the arm 1 is placed inside these openings 26, 26.
Both ends of a locking pin 27 penetratingly arranged on the lower end side of 6 are present. Therefore, the slide member 25 is prevented from sliding vertically downward by the locking pin 27, and is held by the arm 16 so as not to come off. Further, this slide member 25 is always urged vertically downward by a compression coil spring 28. A holder 29 is attached to the lower end of the slide member 25, and this holder 29 is attached to the arm 1.
A pair of mounting holes 3 on both sides perpendicular to the rotation direction of 6.
It has 0.30. And each mounting hole 30, 3
As a preferable example, a holding member 3 made of rubber is included in 0.
1 and 31 are inserted, and these holding members 3
The lower surfaces of 1 and 31 are contact surfaces 32 and 32 that are recessed to have an arcuate cross section along the curvature of the top of the valve 4.
is doing.

Further, below the holder 29, there is provided a chuck 33 for fixing the grip portion 3 of the socket body 1 by clamping it from both sides, for example. This chuck 33 is designed to fix the socket body 1 in such a way that the opposite direction of the conductive pieces 9 provided on the socket body 1 is along the reciprocating direction of the arm 16. The contact pieces 10b, 10b of each socket main body 1 fixed in this manner are electrically contacted with power supply terminals 35, 35 connected to a power source 34, so as to light the lamp.

Therefore, in order to perform a lighting inspection, the socket body 1 into which the bulb 4 is inserted is checked 3 as described above.
The conductive pieces 9, 9 and the power supply terminals 35, 35 are brought into electrical contact. Then, for example, by moving the chuck 33 upward, the top of the bulb 4 is pressed against the contact surface 32 of the holding member 31 and the conductive pieces 9 are energized. In this state, the motor 15 is activated to linearly reciprocate the entire holder 29 via the arm 16 in a substantially horizontal direction.
Then, the valve 4 pressed against the holding member 31 is vibrated relative to the socket body 1, and the sealing portion 5 of the valve 4 is pressed against the connecting piece portions 10a, 10a and 10.
A and 10a are slid in a direction perpendicular to these opposing directions, as shown by the arrows in FIG. In this case, the amplitude given to valve 4 is 1mm left and right.
Approximately 2 mm to 2 mm, and the number of swings is preferably 4 or 5 times. At the same time as this vibration, it is detected whether the lamp is lit or not. Although this detection can be done visually, it is preferable to use an optical detection means such as a phototransistor to determine which lamps cannot be lit.

However, according to this method, after the bulb 4 is inserted into the bulb insertion hole 6, the lamp is lit while the bulb 4 is oscillated in a predetermined direction with respect to the socket body 1.
In the insertion process, the contact state between the external conductors 12, 12 and the connecting pieces 10a, 10a becomes incomplete, but the incomplete contact state is promoted by the above-mentioned swinging vibration, resulting in a non-contact state. to move to. As a result, the lamp may become unable to light up or may repeatedly blink. Therefore, the external conductor 1
2, 12 and the connecting pieces 10a, 10a can easily and reliably detect a lamp in an incomplete contact state, and furthermore, the lamp of this detection termination agent cannot be lit due to vibrations during subsequent processes or transportation This significantly reduces the percentage of cases where the test occurs, and improves the reliability of the test. It should be noted that if the bulb 4 of the lamp, which is in a state of complete contact, is vibrated as described above, it is unthinkable that the external conductors 12, 12 and the connecting pieces 10a, 10a may enter a state of incomplete contact. However, the connection piece part 10a, which is in a complete contact state,
10a has its own elasticity that causes the external conductors 12,1
2, and the number of oscillations and amplitude of the valve 4 are small, so there is no risk that the normal contact state will be impaired.

Further, according to the device configured as described above, since the top of the bulb 4 is held when the bulb 4 is oscillated, the surroundings of the bulb 4, that is, the filament 11, are not hidden, and whether the lamp is lit or not. can be reliably detected. Also, a holding member 31 that holds the top of the valve 4,
Since the socket 31 is made of rubber and the socket main body 1 side is fixed, no excessive force is applied to the valve 4 when the valve 4 swings and vibrates, and damage to the valve 4 can be prevented.

Since the holder 29 is urged downward by the compression coil spring 28, the holder 29
Despite the reciprocating movement of the arm 16, the holding member 31 can be prevented from coming off the top of the valve 4, and the reciprocating movement of the arm 16 can be reliably transmitted to the valve 4 side.

Furthermore, the drive shaft 1 can be
Since the rotational motion of the arm 16 can be converted into the reciprocating motion of the arm 16, the structure is simple and there are fewer failures.

Note that the present invention is not limited to the above embodiments. For example, the shapes of the socket main body and the conductive piece are not limited to those in the above embodiment, and the number of holding members provided on the holder is not limited to two, but may be one, three, or more.

As explained above, the method of the present invention involves inserting the valve into the valve insertion hole of the socket body and electrically contacting the conductive piece inside the socket body and the external conductor attached to the circumferential surface of the sealing part of the valve. By holding the socket body and vibrating the bulb against the socket body while energizing the lamp, it is possible to detect whether or not the lamp is lit. When the contact state with the piece becomes incomplete, the above-mentioned swinging vibration promotes the incomplete contact state and shifts to a non-contact state. Therefore, lamps in which the external conductor and the conductive piece are in incomplete contact can be easily and reliably detected, and the proportion of lamps for which detection has been completed becoming unable to light due to vibrations during subsequent processes is reduced. , the reliability of testing is greatly improved.

Further, the device according to the present invention includes a chuck that holds the socket body, a power supply that energizes the conductive piece of the socket body to light the lamp, a holding member made of an elastic material that holds the top of the bulb, and one end of which is connected to the chuck. an elongated actuating member connected to the member and rotatably pivoted in the middle, converting the rotational motion of the drive source into reciprocating motion and transmitting it to the actuating member, and holding the actuating member in the actuating member; Since it is equipped with a power transmission mechanism that reciprocates the member side, the surroundings of the bulb, that is, the filament, are not hidden when the bulb is oscillated, and it is possible to reliably detect whether the lamp is lit or not. can.
Moreover, since the holding member that holds the valve top is made of an elastic material such as rubber and is fixed to the socket body side, it is possible to prevent excessive force from being applied to the valve when the valve swings and vibrates.
This provides excellent effects such as stable lighting detection without damaging the bulb.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view of a baseless metal bulb, FIG. 2 is a side view showing the bulb fitted into the socket body, and FIG. 3 is a plan view of the socket body. , FIG. 4 is a sectional view showing the inspection device, and FIG. 5 is a view taken along the line - in FIG. 4. DESCRIPTION OF SYMBOLS 1... Socket body, 4... Valve, 5... Sealing part, 6... Valve insertion hole, 9... Conductive piece, 12
... External conductor, 16 ... Operating member (arm), 2
1...Power transmission mechanism (coupling member), 31...Holding member, 33...Chuck, 34...Power source.

Claims (1)

[Scope of Claims] 1. A valve is inserted into the valve insertion hole of the socket body, and the conductive piece in the socket body is brought into electrical contact with an external conductor attached to the circumferential surface of the sealing part of the valve, A lighting test for a baseless metal bulb, characterized in that lighting of the lamp is detected by energizing the lamp while holding the socket body and vibrating the bulb relative to the socket body. Method. 2. A chuck that holds the socket body of the baseless metal light bulb, a power source for energizing the conductive piece of the socket body to light the lamp, and a holding member made of an elastic material that holds the top of the bulb of the baseless metal light bulb; One end is connected to this holding member, and
An elongated actuating member whose middle part is rotatably supported, and the rotational motion of the drive source is converted into reciprocating motion and transmitted to the other end of the actuating member, and one end of the actuating member is connected to the pivot point. A lighting inspection device for a baseless metal light bulb, characterized in that it is equipped with a power transmission mechanism that reciprocates using the base as a fulcrum.