JPS58116809A - Manufacture of crystal oscillator - Google Patents

Abstract

PURPOSE:To package a tuning fork type crystal oscillator effectively in terms of space by using united platelike parts for forming a terminal to be connected to the tuning fork type crystal oscillator. CONSTITUTION:A vacuum container consists of a plug frame 13 packed internally with glass 12, a cylindrical case 11, and two platelike terminals 7. Each terminal 7 is made of united parts and run in the glass 12, and then they are deposited by being heated to hold airtightness as a plug. Then, the connection part 7a of the terminals 7 is cut to use the terminals independently of each other. To fit a crystal oscillator 5, the base of the oscillator is soldered to the connection surface 7b of the terminal 7. Then, the terminal is sealed in a case under vacuum to complete the crystal oscillator. Thus, the platelike terminal is used to perform packaging effectively in terms of space.

Description

[Detailed description of the invention] The present invention is a book related to improvements in the packaging of crystal resonators.

The crystal resonator in [quartz crystal time] includes the package.

This requires a relatively large space, which is an obstacle to miniaturization as a 9-hour system.

Therefore, in order to reduce the size of the crystal resonator itself, the thickness of the crystal pellet has been increased by etching the crystal pellet (even resonators with a size of Ll to α2 are about to appear.
By effectively packaging the transducer Fi in terms of overall structure, it is possible to achieve further miniaturization, and the present invention provides an example of miniaturization, low cost, and high precision packaging means.・Conventional crystal oscillators, as shown in the first figure,
It has a structure in which power is supplied from the outside, and it is supported by a terminal 7 and a lead IW8 which also serves as support for the crystal resonator 5. Depending on the pole, using techniques such as wire bonding, the +181 wire 61 can be connected to the outside! I continue. Also, a structure using a leaf spring instead of the thin @6 is also used. Further, when the crystal resonator 5 has a thickness as thin as α1 to α2#M[', the single element 7 may have a higher rigidity in terms of impact resistance. In such a case, a fixing stand 10 for fixing the crystal resonator 5 as shown in FIG. 2 is provided, and electrical continuity is established with the outside via terminals 7 by wire bonding. However, in such a structure, since the terminal 7 is made of wire, the space efficiency is poor, and the structure is complicated and the cost is high. The present invention is intended to solve these missed lectures, and will be explained according to a specific embodiment of the present invention. Glass forming the plug12. The plug frame 15 is made of a material having an expansion coefficient close to that of glass, such as Kovar, and is formed of a plate-shaped terminal 7 or the like.

Here, a specific example of the manufacturing method of the crystal resonator according to the present invention will be explained one by one. As shown in FIG.
is made of one piece, and after passing the terminal 7 through the part covered with sintered material made of glass*2, it is heated and welded to form a plug that can be kept airtight. After that, by cutting the continuous part 7a of the terminal, each can be used as an independent terminal, and in order to attach the crystal resonator, as shown in Fig. 'bK soldering is completed by fixing with means such as, etc., and vacuum-inserting the case 11. That is, terminal 7
Since it is an integral part, the terminal surface 7 (parallelism of 1°7e and distance between centers 11Fi) is extremely high precision as seen in the state shown in Fig. 5.
It is possible to attach a crystal oscillator directly to the connection surface 7b, and conventional terminals have a round cross section 174@
However, with the present invention, it was difficult to make a /J-type plug, as the number of man-hours was increased because each plug had to be positioned independently, and it also depended on the precision of the jig. Since the terminal 71 can be made from Itabayashi part as a press-cut part, it has the advantage that it can be manufactured in large quantities with high precision and small size.
have.

Furthermore, as an application of the present invention, it is possible to provide spring properties to the terminal 70 portion shown in FIG. It is also possible to position the terminal 7d vertically. Furthermore, even if the mounting force or packaging method of the vibrator is different, as shown in Figures 7 (2) and 8, the terminal can also be used as a fixing member for the vibrator, and this can be done reliably. A case where the number of terminals is three or more is also easily possible.

By implementing the present invention as described in detail above,
In addition to being able to package an ultra-small crystal oscillator in a space-efficient manner, it also improves airtightness because it is easy to identify the part type If, and it is also economical because there are fewer parts, making it possible to use pressed parts. have/

[Brief explanation of the drawing]

Figures 1 and 2 are circuit diagrams showing conventional embodiments.
b ri Circuit diagram 4 showing the cross-sectional blade of the present invention, No. 5rIIJ
Figure 6 shows a partial diagram of the present invention, Figure 7 a, b, Figure 8.
The figure shows the present invention. Figure 5 showing another embodiment...Crystal resonator 7...Terminal 11...Case 12...Glass 13...Plug frame or above Figure 8

Claims (1)

[Claims] In an ink resonator comprising a tuning fork type crystal resonator mounted in a vacuum container, the tuning fork type crystal resonator is a thin plate resonator formed by etching and having a thickness of L1m to α21i degree, and The container is filled with glass f'L
From a tab plug frame, a cylindrical case body that engages with the plug frame and removes the crystal oscillator, and two leaf spring lead terminals that penetrate the glass in the plug frame! E9. The tuning fork type crystal oscillator has its longitudinal direction aligned with the axial direction of the cylindrical case so that the base connecting the two forks is on the plug side. Mayuki 2 in the part
The plate-like lead plate is inserted into the vacuum container and is connected to the plug by shouldering the connecting part. , and a method for manufacturing a crystal resonator, characterized in that the continuous portion is cut and separated at a fixed position of the tuning fork type crystal resonator.