KR940002624Y1 - Case structure for ceramic resonator - Google Patents

Abstract

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Description

Upper and lower case structure of ceramic resonator

1 is an exploded perspective view of a ceramic resonator having upper and lower cases according to the prior art.

2 is an exploded perspective view of a ceramic resonator having upper and lower cases according to the present invention.

* Explanation of symbols for main parts of the drawings

1: ceramic resonator 10, 51: lower case

20, 55: upper case 11, 12: terminal

13, 54: ceramic elements 14, 14 ', 15a: groove

21, 21 ', 21a: protrusion S: space

The present invention relates to the structure of the upper and lower cases of the ceramic resonator that generates a resonance frequency by applying an electrical signal to the ceramic element to generate mechanical vibrations. More specifically, a plurality of grooves are formed in the lower case and correspond to the grooves. The present invention relates to an upper and lower case structure of a ceramic resonator, which may further improve the assemblability of the ceramic resonator by providing an upper case having a plurality of protrusions at a position and coupling them to each other.

In the generally known structure of the ceramic resonator 50, as shown in FIG. 1, a plurality of terminals 52, 53 are located in a rectangular lower case 51, and the terminals 52 ( The ceramic element 54 is positioned between the 53, and the upper case 55 is covered above the lower case 51 in which the terminals 52 and 53 are respectively installed therethrough through the ceramic element 54. It has a fixed structure. In the configuration in which the upper case 55 and the lower case 51 are coupled to each other, the terminals 52 and 53 and the ceramic element 54 are built into the lower case 51, and then the lower case 51 is lowered into the upper case 55. The upper case 55 and the lower case by covering the case 51 and rotating 90 ° and the plurality of terminals 52 and 53 protrude out of the lower case 51 to the lower one side space 51a. It is applied by bonding to the joint surface of 51).

However, all of the above work process is made by a fully automatic equipment, and there are many problems in the step of coupling the ceramic resonator (54) by rotating the 90 °, upper and lower cases (51, 55) to each other. will be.

One of the problems is that the upper case 55 is rotated by 90 ° while the lower case 55 is simply positioned in the lower case 51 by interviewing the lower case 51. It was easy to separate.

In addition, the amount of epoxy resin used to fix the upper and lower cases 51 and 55 also increases, in particular, the efficiency of the automation operation is reduced due to the prolongation of the waiting time for curing a large amount of epoxy resin. There were problems.

The present invention has been made to solve the above problems, to improve the coupling structure of the upper and lower cases, to provide the upper and lower case structure of the ceramic resonator to improve the productivity by the automated operation of the ceramic resonator There is this.

In order to achieve the above object, the present invention forms grooves of a predetermined size at each end edge of the upper wall, forms a partition of a predetermined size at the lower end, and forms a groove of a predetermined depth in the longitudinal direction on the upper surface of the partition. The lower case; and the upper case formed with projections respectively coupled to the grooves at positions corresponding to the grooves of the lower case, respectively, by providing upper and lower case structures of the ceramic resonator.

Hereinafter, the present invention according to the accompanying drawings in more detail as follows.

As shown in FIG. 2, the ceramic resonator 1 having the upper and lower case structures of the present invention is provided with a ceramic element 13 having external electrodes formed up and down in a rectangular lower case 10. Terminals 11 and 13 are installed at upper and lower portions, grooves 14 and 14 'are formed at both edges of the upper wall 10a of the lower case 10, respectively. A partition wall 15 having the same height as the upper wall 10a is formed at a lower end thereof, and grooves 15a are formed in a longitudinal direction on an upper surface of the partition wall 15, and terminals are provided at both sides of the partition wall 15a. (11) (12) The space S which protrudes outward is formed, respectively.

In addition, protrusions 21 and 21 ′ coupled to the grooves 14 and 14 ′ of the lower case 10 are protruded on both sides of one side of the upper case 20 coupled to the lower case 10. The lower case 10 is formed of a protrusion 21a which is fixedly coupled to the recess 15a formed in the partition wall 15 of the lower case 10.

As shown in FIG. 2, the ceramic resonance paper 1 configured as described above has terminals 1 and 12 located above and below the ceramic case 13 in the lower case 10. Epoxy resin is applied to the grooves 14, 14 'and 15a formed on both side edges and the partition walls 15 of the case 10, and the protrusions 21, 21' and 21a of the upper case 20 are applied. Are inserted into and respectively coupled to the recesses 14, 14 'and 15a.

Accordingly, when the upper and lower cases 20 and 10 are coupled to each other, the protrusions 21 and 21 'of the upper case 20 are formed in the grooves 14 and 14' of the lower case 10. It is fitted, and is firmly fixed to each other by being fitted into the longitudinal groove (15a) formed in the partition wall 15 of the lower case 10 of the upper case (20).

According to the present invention as described above, the problem raised in the prior art, that is, to fix the upper case to the lower case, rotated 90 °, to insert the epoxy resin into the space 51a to fix the upper and lower cases The fixing is omitted, and the doric 21, 21 'and 21a of the upper case 20 are simply removed with a small amount of epoxy resin applied to the grooves 14, 14' and 15a of the lower case 10. Insert each one simply to fix it.

As described above, the present invention does not require the upper case 20 to be separated from the lower case 10 during the assembling operation, and does not require the use of a large amount of epoxy resin, and the curing time is also saved. In particular, there is an excellent effect that can further improve the assemblability in the automated operation.

Claims (1)

Terminals 11 and 12 are respectively installed at upper and lower portions of the rectangular lower case 10 through ceramic elements 13 having electrodes formed on upper and lower sides thereof, and the upper case (10) is disposed above the lower case 10. In the ceramic resonator in which 20 is mounted, grooves 14 and 14 ′ are formed in upper edges 10a of the upper case 10a of the lower case 10, and an upper wall 10a is formed at the lower end of the lower case 10. The partition wall 15 having the same height as) is placed so that the groove 15a is formed in the longitudinal direction on the upper surface thereof, while the lower case 10 is disposed on both sides of one side of the upper case 20 coupled thereto. The protrusions 14 and 14 'coupled to the grooves 14 and 14' are respectively protruded, and the lower case 10 is provided with protrusions 21a protruding in the longitudinal direction at the front lower end of the upper case 20. Upper and lower ceramic resonators, characterized in that the coupling is fixed to the groove (15a) formed on the partition wall 15 of the Subcase structure.