TWM455314U - Thin type piezoelectric speaker - Google Patents

Description

Thin piezoelectric speaker

This creation is about a thin piezoelectric speaker, especially an overall structural improvement design of an ultra-thin piezoelectric speaker.

The piezoelectric vibrator of the piezoelectric speaker has a longitudinal vibrating shape, a double shape, a piezoelectric polymer shape, etc., and the common appeal is in the form of ultra-thinning and miniaturization. Since the volume of the longitudinal vibrator and the piezoelectric polymer vibrator is quite small, the relative fixing element cannot be configured to be bonded to other objects, and the most common combination is to attach the fixing element to the object selection. This combination is difficult to achieve a fixed effect. Secondly, the vibrator and the necessary wires, signal lines, etc. are often constructed by welding, which leads to the cumbersome installation procedure when used in mobile phones, multimedia portable players, notebook computers, etc. Liangzhu will directly affect the effect of sound emission. Therefore, the creator of the case has proposed an overall design scheme of the piezoelectric speaker (Announcement No. I325729) to overcome the above problems.

However, the piezoelectric vibrator shown in the above-mentioned I325729 patent is two pieces, and a vibration absorbing element is interposed therebetween. Although a good sound quality can be obtained, the entire piezoelectric speaker cannot be made lighter and thinner; The terminal is divided into a terminal connected to the wire, and is in contact with the piezoelectric vibrator The terminal, the structure of the layer transfer, and the structural shape of each terminal cause the height thereof to be too high, and also limit the possibility of the piezoelectric speaker being thinner and thinner. Therefore, the thickness of the piezoelectric speaker can be made only by the internal combination structure being improved. Thinner to take advantage of applications on electronics.

The purpose of the present invention is to provide a thin piezoelectric speaker which is improved in a combination of a piezoelectric vibrator and a conductive terminal in a piezoelectric speaker to achieve a lighter weight and a good sound quality.

In order to achieve the above object, a preferred embodiment of the present invention comprises: a speaker comprising a box body and a cover; the box body includes a receiving recess in a recess, and is located in the receiving slot. Two positioning portions corresponding to the two first terminal mounting portions of the two positioning portions, and a second terminal mounting portion corresponding to one of the first terminal mounting portions; the cover body covers the housing of the box body On the trough. A piezoelectric vibrator comprising a plate and a piezoelectric material bonded to both sides of the plate, wherein one end of the plate is provided with two protrusions, and each of the protrusions is coupled to a positioning portion of the case body to make the pressure The electric vibrator is received in the receiving groove of the box body. Two first terminals are respectively disposed on the first terminal mounting portion of the box body, and each of the first terminals forms a guiding elastic piece, wherein a guiding elastic piece of the first terminal contacts the plate of the piezoelectric vibrator . And a second terminal disposed on the second terminal mounting portion of the box body, contacting the piezoelectric material on both sides of the piezoelectric vibrator plate, and contacting the guiding elastic piece of the other first terminal to the Second terminal.

The thin piezoelectric speaker according to the above preferred embodiment, wherein the first terminal is bent into two first clips and formed in a meandering shape. At the mouth end, one of the first clips is formed with one side of the first clip.

The thin piezoelectric speaker according to the above preferred embodiment, wherein a first clip of the first terminal is provided with a wire buckle that is obliquely convex toward the other first clip.

The thin piezoelectric speaker according to the above preferred embodiment, wherein the open end of the other first clip of the first terminal is provided with a gusset plate, and the gusset is provided with a wire for feeding the two first clips. Through hole between.

The thin piezoelectric speaker according to the above preferred embodiment, wherein one end of the box body of the speaker is provided with a wire jack corresponding to the through hole.

The thin piezoelectric speaker according to the above preferred embodiment, wherein the second terminal is bent into two second clips and one open end, and a second clip contacts one side of the piezoelectric vibrator The piezoelectric material, the other second clip contacts the piezoelectric material on the other side of the piezoelectric vibrator.

The thin piezoelectric speaker according to the above preferred embodiment, wherein a second clip of the second terminal protrudes from a guiding piece, and the guiding elastic piece of the first terminal contacts the second terminal On the guide piece.

The thin piezoelectric speaker according to the above preferred embodiment, further comprising two vibration-damping elements, each of the vibration-damping elements being adhered to the bottom of the receiving groove of the box body through a double-sided tape, and making the system The vibrating element abuts against the piezoelectric vibrator.

The thin piezoelectric speaker according to the above preferred embodiment, further comprising two vibration-damping elements, each of the vibration-damping elements being adhered to the inner surface of the cover through a double-sided tape, and each of the vibration-damping elements Reach against the piezoelectric Vibrator.

The thin piezoelectric speaker according to the above preferred embodiment, wherein the first terminal mounting portion and the second terminal mounting portion of the cartridge body are recesses recessed in the bottom of the receiving slot.

Therefore, the thin piezoelectric speaker of the present invention can be made thinner and thinner through the configuration and structural design of the single piezoelectric vibrator and the first terminal and the second terminal, and is particularly suitable for use in electronic products. on. Furthermore, the present invention can also achieve better sound quality of the piezoelectric speaker by averaging the two vibration-damping elements on both sides of the piezoelectric vibrator.

1‧‧‧ Speaker

11‧‧‧ box body

12‧‧‧ Cover

13‧‧‧ accommodating slots

14‧‧‧ Positioning Department

15‧‧‧First terminal mounting

16‧‧‧Second terminal mounting

17‧‧‧Wire jack

18‧‧‧ hook

19‧‧‧ buttonhole

2‧‧‧Piezoelectric vibrator

21‧‧‧ plates

211‧‧‧ 片片

212‧‧‧Positioning holes

22‧‧‧Piezoelectric materials

3a, 3b‧‧‧ first terminal

31a, 31b‧‧‧ guided shrapnel

32‧‧‧First clip

33‧‧‧Open end

34‧‧‧Wire buckle

35‧‧‧

36‧‧‧through hole

4‧‧‧second terminal

41‧‧‧Second clip

42‧‧‧Open end

43‧‧‧Guide

5‧‧‧ Vibration element

51‧‧‧ Double-sided tape

10‧‧‧Wire

The first figure is a three-dimensional schematic diagram of a thin piezoelectric speaker.

The second figure is a three-dimensional schematic diagram 2 of the creation of a thin piezoelectric speaker.

The third figure is an exploded view of the creation of a thin piezoelectric speaker.

The fourth picture is a schematic cross-sectional view of a thin piezoelectric speaker.

The fifth figure is an exploded schematic view of the piezoelectric vibrator.

The sixth figure A is a three-dimensional schematic diagram of the first terminal of the creation.

Figure 6B is a schematic cross-sectional view of the first terminal of the creation.

The sixth figure C is a schematic diagram of the use of the first terminal of the creation.

The seventh figure A is a schematic perspective view of another first terminal of the creation.

Figure 7B is a schematic cross-sectional view of another first terminal of the present invention.

The seventh figure C is a schematic diagram of the use of another first terminal of the creation.

The eighth figure A is a schematic perspective view of the second terminal of the creation.

Figure 8B is a side view of the second terminal of the creation.

The eighth figure C is a schematic diagram of the use of the second terminal of the creation.

The ninth drawing is an exploded perspective view of another embodiment of the artificial vibration-damping element.

The tenth figure is an exploded schematic view of another embodiment of the artificial vibration-damping element.

The structural features and other functions and purposes of the present invention are described in detail below with reference to the accompanying drawings. Referring to the first, second and third figures, the thin piezoelectric speaker of the present invention is preferably a preferred embodiment. The system includes: a speaker 1, a piezoelectric vibrator 2, two first terminals 3, a second terminal 4 and two foams 5, wherein: as shown in the third and fourth figures, the speaker 1 can be The shape of the piezoelectric vibrator 2 is implemented in a rectangular or other shape of a box body 11 and a cover body 12; one side of the box body 11 is recessed with a receiving groove 13 for providing the piezoelectric vibrator 2, and is located in the receiving groove. Two positioning portions 14 in the 13, two side-by-side first terminal mounting portions 15 between the two positioning portions 14, corresponding to a second terminal mounting portion 16 of one of the first terminal mounting portions 15, and The first terminal mounting portion 15 and the second terminal mounting portion 16 are recesses recessed in the bottom of one end of the receiving groove 13; The cover 12 covers the receiving groove 13 of the box body 11, and the hook 18 and the box are passed through the edge. The button holes 19 of the body 11 are combined.

As shown in the third and fifth figures, the piezoelectric vibrator 2 is a device capable of generating an audible sound by inputting an audio, which includes a rectangular plate. 21 and a piezoelectric material 22 bonded to both sides of the plate 21, a piezoelectric material 22 such as a barium titanate-based ceramic or the like; wherein one end of the plate 21 is provided with two protrusions 211, and each of the protrusions 211 is provided with a positioning hole. 212, the positioning hole 212 is coupled to the positioning portion 14 of the cartridge body 11, and the piezoelectric vibrator 2 is accommodated in the receiving groove 13 of the cartridge body 11.

As shown in the third figure, the two first terminals 3a, 3b are used for quickly connecting the wires and electrically connecting the conductive elements of the piezoelectric vibrator 2, which are respectively disposed at the first terminal mounting portion 15 of the cartridge body 11, Each of the first terminals 3a, 3b forms a guiding elastic piece 31a, 31b, such that the guiding elastic piece 31a of one of the first terminals 3a contacts the plate 21 of the piezoelectric vibrator 2, and the guiding spring piece of the other first terminal 3b 31b contacts the second terminal 4, and is connected to the piezoelectric material 22 of the piezoelectric vibrator 2 through the second terminal 4. Specifically, as shown in FIG. 6A to FIG. 7C and FIG. 7A to FIG. 3C, the first terminals 3a and 3b are two first clips 32 and an open end 33 bent in a meandering shape, and selected ones thereof. Leading elastic pieces 31a, 31b are formed on one side of a first clip 32. One of the first clips 32 of each of the first terminals 3a, 3b is provided with a buckle 34 that is obliquely convex toward the other first clip 32 for holding the electric wire 10 inserted from the open end 33. Furthermore, the open end of the other first clip 32 of each of the first terminals 3a, 3b is provided with a gusset 35, and each gusset 35 is provided with a through hole 36 for providing a wire between the two first clips. The through hole 36 is corresponding to the wire insertion hole 17 of the cartridge body 11, whereby as shown in FIG. 6C and FIG. 7C, when the external electric wire 10 penetrates the wire insertion hole 17 and the through hole 36, it will be The first clip 32 and the gusset 35 are fastened to achieve a fast electrical connection.

As shown in the third and fourth figures, the second terminal 4 is disposed on The second terminal mounting portion 16 of the cartridge body 11 contacts the piezoelectric material 22 on both sides of the piezoelectric vibrator 2 plate 21 with the second terminal 4, and contacts the conductive elastic piece 31b of the other first terminal 3b. The second terminal 4. Specifically, as shown in FIG. 8A to FIG. 8C, the second terminal 4 is bent into two second clips 41 and an open end 42 of a meander shape, and a second clip 41 contacts the piezoelectric vibrator. 2 the piezoelectric material 22 on one side, the other second clip 41 contacts the piezoelectric material 22 on the other side of the piezoelectric vibrator 2, and a second clip 41 of the second clip 41 protrudes from a guide tab 43 The conductive elastic piece 31b of the first terminal 3b is in contact with the guiding piece 43 of the second terminal 4.

As shown in the third and fourth figures, the two vibration-damping elements 5 are composed of a foam pad, a rubber pad, a rubber pad or a polyurethane, and each of the vibration-damping elements 5 is adhered to the case body through a double-sided tape 51. The receiving groove 13 of the 11 is grooved, and one surface of each of the vibration-damping elements 5 abuts against the piezoelectric material 22 on one side of the piezoelectric vibrator 2. As shown in the ninth figure, the two vibration-damping elements 5 can also be adhered to the inner surface of the cover 12 through a double-sided tape 51, and one side of each of the vibration-damping elements 5 abuts against the other side of the piezoelectric vibrator 2. Piezoelectric material 22. As shown in the tenth figure, the present invention can also adhere two sound-damping elements 5 to the inner surface of the receiving groove 13 of the casing body 11 and the cover body 12, so that the vibration-damping element 5 abuts against both sides of the piezoelectric vibrator 2 Piezoelectric material 22. Thereby, the single piezoelectric vibrator 2 can obtain a better sound quality by the two damping elements 5 evenly abutting on the near side of the piezoelectric vibrator 2.

In summary, the creation of the thin piezoelectric speaker has been practical and creative, and its technical means are also novel and undoubted, and the efficacy and design purpose are in line with the fact that it has been reasonably improved. For this purpose A new type of patent application is filed, but the bureau will be invited to give a detailed examination, and the patent will be granted as a prayer.

1‧‧‧ Speaker

11‧‧‧ box body

12‧‧‧ Cover

13‧‧‧ accommodating slots

14‧‧‧ Positioning Department

15‧‧‧First terminal mounting

16‧‧‧Second terminal mounting

17‧‧‧Wire jack

18‧‧‧ hook

19‧‧‧ buttonhole

2‧‧‧Piezoelectric vibrator

21‧‧‧ plates

211‧‧‧ 片片

212‧‧‧Positioning holes

22‧‧‧Piezoelectric materials

3a, 3b‧‧‧ first terminal

31a, 31b‧‧‧ guided shrapnel

4‧‧‧second terminal

43‧‧‧Guide

5‧‧‧ Vibration element

51‧‧‧ Double-sided tape

Claims (10)

A thin piezoelectric speaker comprises: a sound box comprising a box body and a cover; the box body comprises a receiving groove recessed in one side, two positioning portions located in the receiving groove, corresponding to two Two first terminal mounting portions of the positioning portion, and a second terminal mounting portion corresponding to one of the first terminal mounting portions; the cover body covers the receiving groove of the box body; a piezoelectric vibrator The invention comprises a plate and a piezoelectric material bonded to both sides of the plate, wherein one end of the plate is provided with two protrusions, and each of the protrusions is coupled to a positioning portion of the box body, so that the piezoelectric vibrator is accommodated therein. a receiving slot of the box body; two first terminals respectively disposed on the first terminal mounting portion of the box body, each of the first terminals forming a guiding elastic piece, wherein a guiding elastic piece of the first terminal contacts the a plate of the piezoelectric vibrator; and a second terminal disposed at the second terminal mounting portion of the case body, contacting the piezoelectric material on both sides of the piezoelectric vibrator plate, and making the other first The guiding spring of the terminal contacts the second terminal. The thin piezoelectric speaker according to claim 1, wherein the first terminal is bent into two first clips and one open end, and one side of one of the first clips is formed. There is the guide shrapnel. The thin piezoelectric speaker of claim 2, wherein a first clip of the first terminal is provided with a wire buckle that is obliquely convex toward the other first clip. A thin piezoelectric speaker as described in claim 3, wherein The open end of the other first clip of the first terminal is provided with a gusset plate, and the gusset plate is provided with a through hole for providing a wire between the two first clips. The thin piezoelectric speaker according to claim 4, wherein one end of the box body of the speaker is provided with a wire jack corresponding to the through hole. The thin piezoelectric speaker according to claim 1, wherein the second terminal is bent into two second clips and an open end, and a second clip contacts the piezoelectric vibrator The piezoelectric material on one side and the other second clip contact the piezoelectric material on the other side of the piezoelectric vibrator. The thin piezoelectric speaker of claim 6, wherein a second clip of the second terminal protrudes from a guiding piece, and the guiding elastic piece of the first terminal contacts the second terminal On the guide piece. The thin piezoelectric speaker according to claim 1, wherein the vibration-damping element is affixed to the bottom of the accommodating groove of the casing body through the double-sided tape, and each of the vibration-damping elements is Rely on the piezoelectric vibrator. The thin piezoelectric speaker according to claim 1, wherein the vibration-damping element comprises two vibration-damping elements, and each of the vibration-damping elements is adhered to the inner surface of the cover through a double-sided tape, and each of the vibration-damping elements abuts The piezoelectric vibrator. The thin piezoelectric speaker according to claim 1, wherein the first terminal mounting portion and the second terminal mounting portion of the cartridge body are Groove.