Double-sided buzzing sheet

Abstract

The utility model discloses a double-sided buzzing sheet, which comprises a metal connecting sheet, the top and the bottom of the metal connecting sheet are fixedly connected with restraint rings, the top and the bottom of the metal connecting sheet are fixedly connected with positioning columns inside the restraint rings, the restraint rings are internally provided with resonance cavities, and the resonance cavities are communicated with the metal connecting sheet. A first piezoelectric ceramic piece is clamped in the upper side restraint ring, a second piezoelectric ceramic piece is clamped in the lower side restraint ring, a first power lead is fixedly connected to the back face of the metal connecting piece, and a second power lead is fixedly connected to the front side of the top of the metal connecting piece. According to the utility model, the function that both sides can vibrate cooperatively or independently so as to generate complex and rich sound effects is added, so that the buzzer has the effects of improving the vibration efficiency of the buzzer and reducing the energy loss, and the situation that the buzzer can only generate single or simpler sound due to the fact that the buzzer is generally of a single-point type is prevented.

Description

Technical Field

[0001] This utility model relates to the field of buzzer technology, specifically a double-sided buzzer. Background Technology

[0002] A buzzer is a component that converts electrical energy into sound energy, primarily producing sound through vibration. Its core structure is a composite of a piezoelectric ceramic sheet and a metal sheet, and it is widely used in electronic products as a sound-generating device.

[0003] According to patent announcement number CN207150826U published on the China Patent Network, this utility model relates to a double-sided buzzer. It mainly solves the problem of bulging in buzzers. It includes a substrate and a piezoelectric ceramic disposed on the substrate. Grooves are provided on both the upper and lower surfaces of the substrate, and cavities are provided within the substrate between the grooves. A metal layer is provided on the upper surface of the piezoelectric ceramic, and an adhesive layer is provided on the lower surface. The adhesive layer has uniformly distributed gaps, with the gap area accounting for 15%-25% of the adhesive layer's surface area. The piezoelectric ceramic adheres to the grooves, and a protective pad is provided around the piezoelectric ceramic. This double-sided buzzer has gaps on the end face of the piezoelectric ceramic connected to the substrate, increasing the adhesion between the piezoelectric ceramic and the substrate, thereby increasing the vertical tensile force between the piezoelectric ceramic and the substrate. After thermal shock from 260-320℃ / 90s hot air reflow soldering, bulging will not occur, improving product reliability. It has the advantages of simple structure and low cost.

[0004] Electronic sound-generating devices require buzzers to operate, but most buzzers on the market are single-point type, which means that the buzzer can only produce a single or simple sound, resulting in low vibration efficiency and low energy utilization. This limits the use of buzzers and fails to bring convenience to users.

[0005] Therefore, it is necessary to redesign and modify the buzzer to effectively prevent the phenomenon that buzzers, which are usually single-point type, can only produce a single or relatively simple sound. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a double-sided buzzer, which has the advantage that both sides can vibrate in concert or individually, thereby producing complex and rich sound effects. This solves the problem that buzzers are usually single-point type, which means that buzzers can only produce a single or relatively simple sound.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-sided buzzer, comprising a metal connecting piece, wherein a constraint ring is fixedly connected to the top and bottom of the metal connecting piece, and a positioning post is fixedly connected to the top and bottom of the metal connecting piece and inside the constraint ring, wherein a resonance cavity is provided inside the constraint ring, a first piezoelectric ceramic sheet is snapped into the inside of the upper constraint ring, a second piezoelectric ceramic sheet is snapped into the inside of the lower constraint ring, a first power lead is fixedly connected to the back of the metal connecting piece, and a second power lead is fixedly connected to the front side of the top of the metal connecting piece.

[0008] As a preferred embodiment of this utility model, the inner wall of the constraint ring is fixedly connected with a limiting block, the number of the limiting blocks is several, and the several limiting blocks are evenly arranged, the limiting block is used in conjunction with the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet.

[0009] As a preferred embodiment of this invention, a locking block is fixedly connected to the top of the first piezoelectric ceramic sheet, and the surface of the locking block is in contact with the surface of the first power lead.

[0010] In a preferred embodiment of this invention, a sealing gasket is fixedly connected to the top of the constraint ring, and the bottom of the sealing gasket is bonded to the surfaces of the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet.

[0011] As a preferred embodiment of this utility model, both sides of the metal connecting piece are fixedly connected to connecting members, and the connecting members are used in conjunction with the metal connecting piece.

[0012] As a preferred embodiment of this invention, the surface of the metal connecting piece is provided with an anti-rust coating, which is used in conjunction with the metal connecting piece.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model adds the functionality that both sides can vibrate in synergy or individually, thereby producing complex and rich sound effects. It also improves the vibration efficiency of the buzzer and reduces energy loss, preventing the situation where the buzzer is usually a single-point type, which causes the buzzer to only produce a single or relatively simple sound.

[0015] 2. By setting a limiting block, this utility model can limit the movement range of the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet.

[0016] 3. By setting up a locking block, this utility model can assist in positioning the first piezoelectric ceramic sheet, thereby improving the stability of the first piezoelectric ceramic sheet.

[0017] 4. By setting a sealing gasket, this utility model can increase the seal between the constraint ring and the first and second piezoelectric ceramic sheets, absorb ineffective vibrations, and thus reduce energy dissipation to non-sound-generating directions.

[0018] 5. This utility model, through the setting of connectors, enables the installation of metal connecting pieces, thereby improving the working efficiency of metal connecting pieces.

[0019] 6. This utility model protects the surface of the metal connecting piece by setting an anti-rust coating, thereby improving the service life of the metal connecting piece. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is an exploded view of the constraint ring of this utility model;

[0022] Figure 3 This is a side view of the metal connecting piece of this utility model.

[0023] In the figure: 1. Metal connecting piece; 2. Constraint ring; 3. Positioning post; 4. Resonance cavity; 5. First piezoelectric ceramic sheet; 6. Second piezoelectric ceramic sheet; 7. First power lead; 8. Second power lead; 9. Limiting block; 10. Locking block; 11. Sealing gasket; 12. Connector; 13. Anti-rust coating. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 3 As shown, the present invention provides a double-sided buzzer, including a metal connecting piece 1, a constraint ring 2 fixedly connected to the top and bottom of the metal connecting piece 1, a positioning post 3 fixedly connected to the top and bottom of the metal connecting piece 1 and inside the constraint ring 2, a resonance cavity 4 provided inside the constraint ring 2, a first piezoelectric ceramic sheet 5 snapped into the inside of the upper constraint ring 2, a second piezoelectric ceramic sheet 6 snapped into the inside of the lower constraint ring 2, a first power lead 7 fixedly connected to the back of the metal connecting piece 1, and a second power lead 8 fixedly connected to the front of the top of the metal connecting piece 1.

[0026] refer to Figure 2The inner wall of the constraint ring 2 is fixedly connected to a limiting block 9. There are several limiting blocks 9, and the several limiting blocks 9 are evenly arranged. The limiting block 9 is used in conjunction with the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6.

[0027] As a technical optimization of this utility model, the setting of the limiting block 9 can limit the movement range of the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6.

[0028] refer to Figure 1 A locking block 10 is fixedly connected to the top of the first piezoelectric ceramic sheet 5, and the surface of the locking block 10 is in contact with the surface of the first power lead 7.

[0029] As a technical optimization of this utility model, the setting of the card block 10 can assist in the positioning of the first piezoelectric ceramic sheet 5, thereby improving the stability of the first piezoelectric ceramic sheet 5.

[0030] refer to Figure 2 A sealing gasket 11 is fixedly connected to the top of the constraint ring 2, and the bottom of the sealing gasket 11 is bonded to the surface of the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6.

[0031] As a technical optimization of this utility model, by setting the sealing gasket 11, the constraint ring 2 and the first piezoelectric ceramic sheet 5 and the second piezoelectric ceramic sheet 6 can be sealed, absorbing ineffective vibrations, thereby reducing energy dissipation to non-sound-generating directions.

[0032] refer to Figure 1 Both sides of the metal connecting piece 1 are fixedly connected to the connecting piece 12, which is used in conjunction with the metal connecting piece 1.

[0033] As a technical optimization of this utility model, the metal connecting piece 1 can be installed by setting the connector 12, thereby improving the working efficiency of the metal connecting piece 1.

[0034] refer to Figure 1 The surface of the metal connecting piece 1 is provided with an anti-rust coating 13, which is used in conjunction with the metal connecting piece 1.

[0035] As a technical optimization of this utility model, the anti-rust coating 13 can protect the surface of the metal connecting piece 1 and improve the service life of the metal connecting piece 1.

[0036] The working principle and usage process of this utility model are as follows: In use, firstly, the first power lead 7 is connected to the positive terminal of the drive circuit, and the second power lead 8 is connected to the control signal terminal to make the buzzer work. The first piezoelectric ceramic sheet 5 on the upper side and the second piezoelectric ceramic sheet 6 on the lower side are connected in parallel through the metal connecting piece 1 to form a dual vibration source structure. The limiting block 9 on the inner wall of the constraint ring 2 restricts the lateral displacement of the ceramic sheet to ensure the consistency of the vibration direction. The positioning column 3 fixes the center position of the ceramic sheet through mechanical contact to avoid eccentric vibration. The parabolic inner wall reflects the lateral sound waves to the main sound output direction. The constraint ring 2 at the edge suppresses asymmetric vibration modes and reduces energy leakage to non-sound output directions. The sealing gasket 11 can absorb ineffective vibration energy, reduce resonance interference, and block moisture erosion.

[0037] In summary, this double-sided buzzer, by enabling both sides to vibrate collaboratively or individually, can produce complex and rich sound effects. This enhances the vibration efficiency of the buzzer, reduces energy loss, and prevents the single-point nature of buzzers from producing only a single or simple sound. Therefore, it solves the problem of single-point buzzers typically producing only a single or simple sound.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided buzzer sheet comprising a metal connecting sheet (1), characterized in that: The top and bottom of the metal connecting piece (1) are fixedly connected to a constraint ring (2). The top and bottom of the metal connecting piece (1) and inside the constraint ring (2) are fixedly connected to a positioning post (3). The constraint ring (2) is provided with a resonance cavity (4). The upper constraint ring (2) is snapped with a first piezoelectric ceramic sheet (5). The lower constraint ring (2) is snapped with a second piezoelectric ceramic sheet (6). The back of the metal connecting piece (1) is fixedly connected to a first power lead (7). The front of the top of the metal connecting piece (1) is fixedly connected to a second power lead (8).

2. A double-sided buzzing sheet according to claim 1, characterized in that: The inner wall of the constraint ring (2) is fixedly connected to a limiting block (9). There are several limiting blocks (9), and the several limiting blocks (9) are evenly arranged. The limiting block (9) is used in conjunction with the first piezoelectric ceramic sheet (5) and the second piezoelectric ceramic sheet (6).

3. A double-sided buzzing sheet according to claim 1, characterized in that: A locking block (10) is fixedly connected to the top of the first piezoelectric ceramic sheet (5), and the surface of the locking block (10) is in contact with the surface of the first power lead (7).

4. The double-sided buzzing sheet according to claim 1, wherein: A sealing gasket (11) is fixedly connected to the top of the constraint ring (2), and the bottom of the sealing gasket (11) is bonded to the surface of the first piezoelectric ceramic sheet (5) and the second piezoelectric ceramic sheet (6).

5. The double-sided buzzing sheet according to claim 1, wherein: Both sides of the metal connecting piece (1) are fixedly connected to the connector (12), and the connector (12) is used in conjunction with the metal connecting piece (1).

6. A double-sided buzzing sheet according to claim 1, characterized in that: The surface of the metal connecting piece (1) is provided with an anti-rust coating (13), which is used in conjunction with the metal connecting piece (1).

Images