JPH0557834U - Electronic parts - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain electronic components in which all the lead terminals have high mechanical strength. [Structure] A plate-shaped piezoelectric resonator 9, which is a functional element, is sandwiched between locking portions 1a, 2a, 3a having good spring properties, and attached to lead terminals 1, 2, 3. And the lead terminal 1
To the input electrode 16a and the lead terminal 2 to the output electrode 27a.
Then, the lead terminal 3 is soldered to a relay conductor (not shown in FIG. 3) that functions as a ground electrode. Further, a product is obtained by coating with an exterior resin material 29 made of epoxy resin or the like. Therefore, the mechanical strength of the lead terminals 1, 2, and 3 is reinforced by the solder, the piezoelectric resonator 9, and the exterior resin material 29.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an electronic component such as a piezoelectric component, and more particularly to an electronic component including a plate-shaped functional element and a plurality of lead terminals attached to the functional element.

[0002]

[Prior art and problems]

 In a conventional electronic component, a plate-shaped functional element is electrically connected and fixed to lead terminals 51, 52, 53 as shown in FIG. 6, for example. The lead terminals 51, 52, 53 are attached to the functional element while being integrally provided on the hoop material 56. That is, the left and right lead terminals 51 and 52 have locking portions 51a and 52a, which are bent at their tips, and after both ends of the functional element are clamped by the locking portions 51a and 52a, Soldered to both ends of the functional element. Therefore, the mechanical strength of the lead terminals 51, 52 is reinforced by the solder, the functional element, and the exterior resin material.

On the other hand, the lead terminal 53 is rod-shaped and has no locking portion. For this reason, the lead terminal 53 is soldered together with the lead terminals 51 and 52 to the central portion of the functional element, but the mechanical strength of the lead terminal 53 is only strengthened by the solder and the exterior resin material. It was not reinforced. As a result, the mechanical strength of the lead terminal 53 was weaker than that of the other lead terminals 51 and 52.

Therefore, an object of the present invention is to provide an electronic component in which all the lead terminals have high mechanical strength.

[0005]

[Means and actions for solving the problem]

 In order to solve the above problems, an electronic component according to the present invention comprises a plate-shaped functional element and a plurality of lead terminals attached to the functional element, and all of the lead terminals have the functional element. It is characterized in that a locking portion for engaging with is provided. Since all the lead terminals are provided with the engaging portions for engaging the functional elements, all the lead terminals are engaged with the functional elements at the engaging portions. Then, each lead terminal is attached to the functional element by soldering or the like while being engaged with the functional element. Therefore, all the lead terminals enjoy the reinforcement of mechanical strength by the functional element.

[0006]

【Example】

 Hereinafter, embodiments of an electronic component according to the present invention will be described with reference to the accompanying drawings. In each example, the same reference numerals are given to the same parts and the same parts. [First Embodiment, FIGS. 1 to 3] FIG. 1 is a perspective view of a lead terminal used in the first embodiment. The lead terminals 1, 2, 3 are provided integrally with the hoop material 5, and have bent engaging portions 1a, 2a, 3a on the tip side. The locking portions 1a, 2a, 3a have good spring properties. The hoop material 5 is provided with transport holes 6 at a constant pitch.

FIG. 2 is a plan view of a plate-shaped piezoelectric resonator 9 which is a functional element. The piezoelectric resonator 9 is used for a piezoelectric component utilizing thickness shear vibration. The piezoelectric substrate 10 of the piezoelectric resonator 9 is made of a rectangular PZT ceramic substrate or the like. The piezoelectric substrate 10 is provided with filter portions 12 and 21, which are composed of vibrating electrodes 13, 14, 15, 22, 23, and 24, respectively. Vibrating electrodes 13, 14, 22, 23 are provided on the front surface of the substrate 10, and vibrating electrodes 15, 24 are provided on the back surface of the substrate 10. The vibrating electrode 13 is electrically connected to the input electrode 16a provided at the left end of the substrate 10, and the vibrating electrode 23 is electrically connected to the output electrode 27a provided at the right end of the substrate 10. An input electrode 16b and an output electrode 27b are also provided on the back surface of the substrate 10 so as to face the electrodes 16a and 27a.

The vibrating electrodes 14 and 22 are electrically connected by a relay conductor 17. Further, the vibration electrodes 15 and 24 are electrically connected by the relay conductors 19a and 19b, and the relay conductors 19a and 19b also have a function as a ground electrode. The relay conductors 17 and 19a, 19b are arranged so as not to overlap on the front and back surfaces of the substrate 10. When the relay conductors 17 and 19a (or 17 and 19b) overlap, a minute resonance occurs between the relay conductors 17 and 19a (or 17 and 19b), and the resonance characteristic of the piezoelectric resonator 9 deteriorates. Because.

Next, as shown in FIG. 3, after the insulating film 28 is formed on the central portion of the surface of the piezoelectric substrate 10, the piezoelectric resonator 9 is sandwiched between the engaging portions 1a, 2a, 3a, and the leads are formed. Attached to terminals 1, 2 and 3. The relay conductor 17 is electrically separated from the lead terminal 3 by an insulating film 28. The lead terminal 1 is soldered to the input electrodes 16a and 16b, the lead terminal 2 is soldered to the output electrodes 27a and 27b, and the lead terminal 3 is soldered to the relay conductors 19a and 19b. Further, after the surrounding portion of the piezoelectric resonator 9 is covered with an exterior resin material 29 made of epoxy resin or the like to form a sealed vibration space, the hoop material 5 and the lead terminals 1, 2, 3 are separated. Complete the piezoelectric component.

In the piezoelectric component thus obtained, the lead terminals 1, 2, and 3 are reinforced by the solder, the piezoelectric resonator 9, and the exterior resin material 29, so that the lead terminals have high mechanical strength. Second Embodiment, FIGS. 4 and 5 FIG. 4 is a perspective view of a lead terminal used in the second embodiment. The lead terminals 31, 32, 33 are provided integrally with the hoop material 35, and have bent engaging portions 31a, 32a, 33a on the tip side. The hoop material 35 is provided with transport holes 36 at a constant pitch.

As shown in FIG. 5, the piezoelectric resonator 9 described in the first embodiment is sandwiched between the lead terminals 31 and 32 by the locking portions 31 a and 32 a. Then, the lead terminal 31 is soldered to the input electrodes 16a and 16b while the center portion of the back end face of the piezoelectric resonator 9 is pressed against the locking portion 33a of the lead terminal 33, and the lead terminal 32 outputs the output. The lead terminals 33 are soldered to the electrodes 27a, 27b, and the relay conductors 19a, 19b. Further, the peripheral portion of the piezoelectric resonator 9 is covered with an exterior resin material 38 to form a sealed vibration space, and then the hoop material 35 and the lead terminals 31, 32, 33 are separated to complete the piezoelectric component.

In the component thus obtained, the engaging portions 31a, 32a, 33a are engaged with the piezoelectric resonator 9, so that the mechanical strength of the lead terminals 31, 32, 33 is different from that of the solder and the piezoelectric resonator 9. The lead terminal is reinforced by the exterior resin material 38 and has high mechanical strength. [Other Embodiments] The electronic component according to the present invention is not limited to the above-mentioned embodiment, and can be variously modified within the scope of the gist thereof. In particular, the electronic component is not limited to the piezoelectric component, but may be another type of electronic component such as a resistor, a capacitor, or an inductor.

[0013]

[Effect of the device]

 As is clear from the above description, according to the present invention, since all the lead terminals are provided with the engaging portions for engaging the functional elements, all the lead terminals are coupled to the functional elements and Reinforcement of mechanical strength can be enjoyed. As a result, an electronic component in which all the lead terminals have high mechanical strength can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lead terminal used in a first embodiment of an electronic component according to the present invention.

FIG. 2 is a plan view showing a piezoelectric resonator used in the first and second embodiments of the electronic component according to the present invention.

FIG. 3 is a perspective view showing a first embodiment of an electronic component according to the present invention.

FIG. 4 is a perspective view showing a lead terminal used in a second embodiment of an electronic component according to the present invention.

FIG. 5 is a perspective view showing a second embodiment of the electronic component according to the present invention.

FIG. 6 is a perspective view showing a lead terminal used in a conventional electronic component.

[Explanation of symbols]

 1, 2, 3 ... Lead terminals 1a, 2a, 3a ... Locking portion 9 ... Piezoelectric resonator (functional element) 31, 32, 33 ... Lead terminals 31a, 32a, 33a ... Locking portion

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped functional element and a plurality of lead terminals attached to the functional element, wherein all of the lead terminals are provided with locking portions for engaging with the functional element. An electronic component characterized by.