CN201717838U - Piezoelectric vibrator - Google Patents

Abstract

The utility model provides a piezoelectric vibrator for electronic components, which comprises a substrate and a piezoelectric sheet arranged on the substrate, and also includes a base for accommodating the substrate and the piezoelectric sheet, and the base is provided with A buckle part, the substrate is provided with a notch corresponding to the buckle part, and the buckle part presses the base plate against the base. The piezoelectric vibrator of the utility model has the advantages of convenient installation, good stability, compact structure and the like.

Description

piezoelectric vibrator

technical field

The utility model relates to a piezoelectric vibrator, in particular to a piezoelectric vibrator which is easy to install.

Background technique

During the rapid development of portable communication devices such as mobile phones, the requirements for electroacoustic devices installed in them are getting higher and higher.

In order to achieve the purpose of saving space and improving quality, electronic components are gradually developing in the direction of ultra-small and ultra-thin. Therefore, as the main implementer of effects such as call notification and touch feedback, the development of piezoelectric vibrators has also accelerated accordingly.

The structure of the piezoelectric vibrator includes a substrate and a piezoelectric sheet attached to the substrate. The substrate and the piezoelectric sheet together form a piezoelectric vibrator of the piezoelectric vibrator. The piezoelectric vibrator usually needs to be carried and fixed to the electronic components through a support.

However, usually, since the support member is combined with the piezoelectric vibrator, its overall structure is not compact, on the one hand, it is not conducive to the stability of the piezoelectric vibrator on the electronic components; on the other hand, it will occupy Too much space, as electronic components gradually become ultra-small and ultra-thin, the above problems become more prominent.

From this point of view, it is necessary to design a piezoelectric vibrator that can be conveniently installed with electronic components.

Utility model content

Aiming at the problem that the existing piezoelectric vibrator is difficult to install, the utility model provides a piezoelectric vibrator with convenient installation.

A piezoelectric vibrator for electronic components, including a substrate and a piezoelectric sheet disposed on the substrate, and a base for accommodating the substrate and the piezoelectric sheet, the base is provided with a buckle portion, The substrate is provided with a notch corresponding to the buckle portion, and the buckle portion presses the substrate tightly against the base.

As a further improvement of the above-mentioned piezoelectric vibrator, the buckle part coincides with the notch.

As a further improvement of the above piezoelectric vibrator, the base is provided with a receiving space, and a step is arranged in the receiving space, and the step separates the substrate and the piezoelectric sheet.

As a further improvement of the above piezoelectric vibrator, the base includes a bottom wall and a side wall, and the inner surface of the bottom wall cooperates with the inner surface of the side wall to enclose the accommodation space.

As a further improvement of the above piezoelectric vibrator, the notch is arranged along the periphery of the substrate.

As a further improvement of the above piezoelectric vibrator, the buckle part is formed by extending inward along the edge of the base.

As a further improvement of the above-mentioned piezoelectric vibrator, the base is provided with a locking groove, and the locking groove is arranged opposite to the locking portion.

As a further improvement of the above piezoelectric vibrator, the substrate is provided with a contact portion that is in contact with the electronic component.

The base plate and the base of the utility model are fixed by the close fit between the notch and the buckle part, which not only facilitates installation but also has good stability. The demand for components to be thinner and lighter.

In summary, the piezoelectric vibrator of the present invention has the advantages of convenient installation, good stability and compact structure.

Description of drawings

FIG. 1 is a three-dimensional exploded schematic diagram of a piezoelectric vibrator of the present invention.

FIG. 2 is a three-dimensional combined schematic view of the piezoelectric vibrator shown in FIG. 1 .

FIG. 3 is a schematic three-dimensional assembly view of the piezoelectric vibrator shown in FIG. 2 along the opposite direction.

Detailed ways

The structure of the piezoelectric vibrator of the present invention will be described below in conjunction with the accompanying drawings.

Please refer to FIGS. 1 to 3 together. The piezoelectric vibrator 1 of the present invention is mainly used for electronic components (not shown), such as mobile phones or other consumer electronics products. The piezoelectric vibrator 1 is close to the The touch screen (not shown) of the electronic component (not shown) is set so as to transmit the vibration generated by the piezoelectric vibrator 1 to the electronic component (not shown).

The piezoelectric vibrator 1 includes a substrate 10 , a piezoelectric sheet 20 and a base 30 . The piezoelectric sheet 20 is attached to the bottom surface of the substrate 10 , and the base 30 carries the substrate 10 and the piezoelectric sheet 20 and fixes the substrate 10 . The substrate 10 and the piezoelectric sheet 20 together constitute a piezoelectric vibrator (not shown) of the piezoelectric vibrator 1 .

The base plate 10 has a circular shape, and three notches 12 are provided on its peripheral edge, and the notches 12 are arranged in an equilateral triangle relative to the center of the base plate 10 . In this embodiment, the notch 12 is semicircular. Of course, the notch 12 can also be in other shapes, such as arc-shaped or triangular, as long as the notch 12 is recessed facing the substrate 10 . A contact portion 14 is provided at the center of the top surface of the substrate 10 , and the contact portion 14 is a circular protrusion for contacting the touch screen of the electronic component. The contact portion 14 can also be set in other shapes, such as square.

The piezoelectric sheet 20 is circular, and a circular hole 22 is provided in the center to facilitate the passage of wires (not shown). The outer diameter of the piezoelectric sheet 20 is smaller than the outer diameter of the substrate 10 . The piezoelectric sheet 20 has an inverse piezoelectric effect, that is, mechanical deformation occurs under the action of an external electric field. The piezoelectric sheet 20 is made of piezoelectric materials, which generally include piezoelectric crystals, piezoelectric ceramics and organic polymer piezoelectric materials. In this embodiment, the piezoelectric sheet 20 is made of piezoelectric ceramic material. The piezoelectric sheet 20 may be configured as a multi-layer structure.

The piezoelectric film 20 is electrically connected to the substrate 10 through conductive electrodes (not shown) disposed on the substrate 10 . The piezoelectric sheets 20 are provided with metal sheets (not shown), and the piezoelectric sheets 20 are electrically connected to an external circuit board (not shown) through the metal sheets.

The base 30 includes a circular bottom wall 32 and a cylindrical side wall (not shown). The inner surface of the circular bottom wall cooperates with the inner surface of the cylindrical side wall to form a receiving space (not shown). A step 34 is disposed in the receiving space of the base 30 . The step 34 divides the receiving space into upper and lower parts, wherein the lower part corresponds to accommodate the piezoelectric sheet 20 , and the upper part corresponds to accommodate the substrate 10 . The base 30 is provided with a locking portion 36 along its periphery, and the locking portion 36 is disposed corresponding to the notch 12 of the base plate 10 . The shape of the locking portion 36 coincides with the notch 12 , so that the locking portion 36 is completely engaged with the notch 12 , and it is convenient to place the substrate 10 in the receiving space. The outer surface of the bottom wall 32 is provided with a slot 38 for cooperating and fixing the electronic components. The slot 38 and the buckle portion 36 are respectively provided on two opposite surfaces of the base 30 . In this embodiment, the locking groove 38 is disposed corresponding to the locking portion 36 . However, it can be understood that the positional relationship of the locking groove 38 is not limited thereto, and can also be set in a staggered manner with the locking portion 36 .

When the piezoelectric vibrator 1 is assembled, the piezoelectric sheet 20 is accommodated in the lower part of the accommodation space of the base 30, and the notch corresponds to the buckle portion 36 and presses the substrate 10 into the In the upper part of the receiving space of the base 30 , then, the base plate 10 is rotated so that the locking portion 36 is pressed against the base plate 10 , and the base plate 10 is fixed in the receiving space of the base 30 .

When the piezoelectric vibrator 1 is working, an electrical signal is connected through a wire, and the conductive electrodes on the substrate 10 cause the piezoelectric sheet 20 to generate an electric field effect, thereby causing the piezoelectric sheet 20 to undergo an inverse piezoelectric effect, The piezoelectric vibrator 1 is made to vibrate, and the vibration force is transmitted to the touch screen of the electronic component through the contact portion 14 of the substrate 10 .

In the present utility model, the substrate 10 and the base 30 are fixed by the close fit between the notch 12 and the buckle part 36, which not only facilitates installation but also has good stability, and at the same time the piezoelectric vibrator 1. The overall structure is compact, which is suitable for the development of thinner and lighter electronic components.

In summary, the piezoelectric vibrator 1 of the present invention has the advantages of convenient installation, good stability and compact structure.

The above are only preferred implementation examples of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (8)

1. A piezoelectric vibrator for electronic components, comprising a substrate and a piezoelectric sheet disposed on the substrate, characterized in that: it also includes a base for accommodating the substrate and the piezoelectric sheet, the base A buckle part is provided, and the substrate is provided with a notch corresponding to the buckle part, and the buckle part presses the substrate tightly against the base. 2 . The piezoelectric vibrator according to claim 1 , characterized in that: the buckle part coincides with the notch. 3 . 3 . The piezoelectric vibrator according to claim 2 , wherein the base is provided with a receiving space, and a step is provided in the receiving space, and the step separates the substrate and the piezoelectric sheet. 4 . 4 . The piezoelectric vibrator according to claim 3 , wherein the base comprises a bottom wall and a side wall, and the inside surface of the bottom wall cooperates with the inside surface of the side wall to enclose the receiving space. 5. The piezoelectric vibrator according to claim 4, wherein the notch is provided along the periphery of the substrate. 6 . The piezoelectric vibrator according to claim 4 , wherein the locking portion extends inward along the edge of the base. 6 . 7 . The piezoelectric vibrator according to claim 4 , wherein the base is provided with a locking groove, and the locking groove is disposed opposite to the buckling portion. 7 . 8. The piezoelectric vibrator according to claim 1, wherein the substrate is provided with a contact portion that contacts the electronic component.

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