JPH05251790A - Laser oscillator - Google Patents

Abstract

PURPOSE:To fix connecting fittings, to which each electrode at both ends of an exciting lamp is inserted and contacted, to a contacting base, to which electricity must be applied, properly and positively without an individual difference, and to bring the electrodes of the exciting lamp and the connecting fittings into contact electrically and completely when the connecting fittings are positioned and fixed to the contacting base. CONSTITUTION:The electrode 1A of an exciting lamp 1 is inserted into the center hole of the splitted cylindrical section of a bearer 2, and clamped and held from all directions by clamping a nut 3, and the bearer 2 is tightened to a substrate 5 by a screw through a metal leaf 4. A fixture 8 is mounted on the cover 11 side of a case, in which a laser oscillation principal section is housed, in a shape that the fixture receives energizing in the downward direction by a spring 9. Accordingly, the substrate 5 is pushed and fixed against a contacting base 6 by the fixture 8 receiving the energizing of the spring at the same time as the cover 11 is set up to the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when the connection metal fittings into which the electrodes at both ends of the excitation lamp are inserted and contacted are positioned and fixed to the contact table to be electrically applied, this fixing is independent of individuals. The present invention relates to a laser oscillator, which is properly and reliably performed, and in which electrical contact between an electrode of an excitation lamp and a connecting fitting is completely performed.

[0002]

2. Description of the Related Art A conventional example will be described below with reference to the drawings. FIG. 3 is a side view of a main part of a conventional example, and FIG. 4 is a front view of the same. In FIGS. 3 and 4, 1 is an excitation lamp and 1A is one electrode. Now, the excitation lamp 1
A straight tube using xenon (Xe) or krypton (Kr) gas is widely adopted. Generally, xenon is used for a so-called flash lamp that is instantaneously discharged with a large current, and krypton is used for a so-called arc lamp that is continuously lit. However, in the case of a flash lamp that is lit with high-speed repetitive pulses or with low input power, using krypton can often perform more efficient excitation, and selection from general theory is difficult. Now, the electrode 1A is electrically connected to a contact table 16 connected to a power source (not shown) via a conductive unit composed of the receiver 12, the spring plate 14, and the substrate 15.

The holder 12 is made of a conductive material and has a hole for inserting the electrode 1A. As shown in FIG. 4, the insertion hole is cut laterally, and the electrode 1A is held by tightening the cut with a small screw 13. The upper leg surface of the U-shaped spring plate 14 is fixed to the lower surface of the receiving member 12, and the lower leg portion is screwed to the base plate 15. The function of the spring plate 14 is to compensate the coaxial error of the receiver 12 and the excitation lamp 1
This is to allow the position of the electrode 1A to be minutely displaced so that an unreasonable force is not applied to the excitation lamp 1 due to the thermal expansion of.
The board 15 is positioned with respect to the contact table 16 and the mounting screws 17
Fixed by. The positioning of the substrate 15 with respect to the contact table 16 is performed by a shallow groove having a width corresponding to the substrate 15 on the contact table 16 side and the pins 7 provided upright on both sides thereof.

FIG. 5 is a side view of the main part of another conventional example, and FIG. 6 is a front view of the same. The other conventional example is different from the conventional example in the holding portion of the electrode 1A. This holding portion is formed as a part of the spring plate 24. The spring plate 24 is formed by integrally forming a holding portion having a known shape that holds the electrode 1A from both sides and a portion corresponding to the spring plate 14 in the conventional example. The other parts that are the same as those in the conventional example are denoted by the same reference numerals.

[0005]

What can be said to be common to one conventional example and another conventional example is that it is difficult to adjust the tightening force of the mounting screw 17 because the substrate 15 is fixed to the contact base 16 by screw fastening. , There are individual differences. If it is too strong, the threaded portion may be screwed, and if it is too weak, it may loosen due to the vibration accompanying the light emission of the excitation lamp 1. Further, since the receiving member 12 in one conventional example and the holding portion of the spring plate 24 in another conventional example have a shape of sandwiching the electrode 1A from both upper and lower sides or both left and right sides, electrical contact is not always perfect. , Especially 3
When a large current of about 3 KA instantaneously flows under a large voltage of about KV, there is a risk of causing problems such as partial melting.

The object of the present invention is to solve the above problems of the prior art, and to insert electrodes at both ends of the excitation lamp.
When the connecting fitting to be contacted is positioned and fixed on the contact base to be electrically applied, this fixing is performed properly and reliably without individual differences, and the electrical connection between the electrode of the excitation lamp and the connecting fitting is made. It is to provide a laser oscillator in which contact is made completely.

[0007]

A laser oscillator according to a first aspect of the present invention is a laser oscillator in which a connecting metal fitting into which electrodes on both ends of an excitation lamp are inserted and contacted is positioned and fixed to a contact base to be electrically applied. In the oscillator, the laser oscillating main part including the excitation lamp is urged toward the storage case that can be attached to and detached from the housing case so as to press the connection fitting against the contact base when the cover is attached. It is equipped with a fixture.

A laser oscillator according to a second aspect is the laser oscillator according to the first aspect.
In the laser oscillator according to, the connecting fitting is split along a plane including a plurality of diameters and an axis,
It has a cylindrical portion for insertion and contact of an excitation lamp electrode having a male thread cut on the outer periphery, and a nut screwed with the male thread.

[0009]

In the laser oscillator according to the first or second aspect of the invention, when the cover is attached to the storage case, the fixing member presses the connecting fitting against the contact base by its urging force. Particularly, in the laser oscillator according to the second aspect, the outer peripheral surface of the excitation lamp electrode is brought into contact with almost the entire inner peripheral surface of the cylindrical portion by inserting the excitation lamp electrode into the cylindrical portion and then tightening the nut on the male screw of the cylindrical portion. To do.

[0010]

Embodiments of the laser oscillator according to the present invention will be described below with reference to the drawings. The embodiment is different from the conventional example in the method of fixing the substrate to the contact table and the method of holding the electrode. FIG. 1 is a side view of a main part of the embodiment, and FIG. 2 is a front view of the same. In these figures, electrode 1A
The receiving member 2 for has a structure in which a rectangular body and a tubular body are integrated, and a male thread is cut on the outer periphery of the tubular body, and is split along a plane including its axis and two orthogonal diameters. It is included. The electrode 1A is inserted into the center hole of this cylindrical body, and the nut 3 is screwed onto the male screw and tightened to secure the electrode.
1A is uniformly tightened and held from all directions. Therefore, the electrical contact between the electrode 1A and the receiver 2 becomes complete.
Further, the upper leg surface of the U-shaped spring plate 4 is fixed to the lower surface of the rectangular portion of the receiver 2, and the lower leg portion is screwed to the substrate 5. The substrate 5 is positioned on the contact table 6. This positioning is based on the shallow groove of the contact table 6 having a width corresponding to the substrate 5 and the pins erected on both sides. Well, contact table
The substrate 5 is fixed to the substrate 6 by the pressing method as follows.

FIG. 1 shows a state where the cover 11 is detached from the housing case of the laser oscillation main part including the excitation lamp 1. On the inner surface of this cover 11, the guide tool 10
The fixing tool 8 is guided so as to be able to move straight in the vertical direction, a retaining ring is fitted to the upper end of the fixing tool 8 and is urged downward by the spring 9. When the cover 11 is attached to the storage case, at the same time, the lower surface of the fixture 8 presses the upper surface of the substrate 5 as shown by a dashed line. Therefore, since the substrate 5 is fixed to the contact table 6 by the spring 9, it is possible to select an appropriate spring force to prevent an accident due to incomplete screw fastening due to individual differences as in the conventional example. Disappears.

[0012]

In the laser oscillator according to the first or second aspect of the present invention, when the cover is attached to the storage case, the fixing member presses the connecting fitting against the contact base by its urging force. Therefore, by proper selection of the urging force, there is no possibility that the screw will be damaged due to individual differences or loosening due to insufficient screw fastening, as in the conventional example,
The connection fittings are fixed to the contact base properly and reliably.

Particularly, in the laser oscillator according to claim 2,
After inserting the excitation lamp electrode into the cylindrical portion, by tightening the nut on the male screw of the cylindrical portion, the outer peripheral surface of the excitation lamp electrode comes into contact with substantially the entire inner peripheral surface of the cylindrical portion. Therefore, complete electrical contact between the excitation lamp electrode and the connection fitting can be obtained, so that the excitation lamp can withstand a large voltage and a large current applied to the excitation lamp, and the reliability of laser oscillation can be improved.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an embodiment according to the present invention.

[Fig. 2] Similarly, its front view

FIG. 3 is a side view of a main part of a conventional example.

[Figure 4] Similarly, its front view

FIG. 5 is a side view of a main part of another conventional example.

FIG. 6 is a front view of the same.

[Explanation of symbols]

 1 Excitation Lamp 1A Electrode 2 Receiver 3 Nut 4 Spring Plate 5 Board 6 Contact Table 7 Pin 8 Fixing Tool 9 Spring 10 Guide Tool 11 Cover

Claims (2)

[Claims] 1. A laser oscillator in which a connecting fitting into which electrodes on both ends of an excitation lamp are inserted and contacted is positioned and fixed to a contact table to be electrically applied, and a laser oscillation main part including the excitation lamp is provided. A laser oscillator, comprising: a fixing device, which is attached to and detachable from a storage case, provided with a fixing member that is urged to press the connection fitting against the contact base when the cover is attached. 2. The laser oscillator according to claim 1, wherein
The connecting fitting is divided along a plane including a plurality of diameters and an axis, and has a cylindrical portion for insertion and contact of an excitation lamp electrode, which has an external thread cut off, and a nut to be screwed with the external thread. A laser oscillator comprising: