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CN-224232349-U - Large-scale buzzing piece

CN224232349UCN 224232349 UCN224232349 UCN 224232349UCN-224232349-U

Abstract

The utility model discloses a large-scale buzzer which comprises a metal substrate, piezoelectric ceramic plates arranged on the front surface of the metal substrate, wherein side wing plates are arranged on the left side and the right side of the metal substrate, a back plate is fixedly connected to the back surface of the side wing plates, one side of the back plate, which is far away from the side wing plates, extends to the back surface of the metal substrate, a front plate is fixedly connected to the front surface of the side wing plates, one side of the front plate, which is far away from the side wing plates, extends to the front surface of the piezoelectric ceramic plates, a connecting plate is arranged at the top of the side wing plates, swing rods are connected to the front surface and the back surface of the connecting plate in a swinging mode, and one side of the swing rods, which is far away from the connecting plate, extends to the outer side of the side wing plates and is fixedly connected with the side wing plates. According to the utility model, through the cladding design of the left and right side wing plates, the back plate and the front plate, the piezoelectric ceramic plates are completely wrapped in the metal frame to replace a single glue bonding plane fixing mode, and the frame structure distributes the shearing force generated by vibration to the whole side wing plate system, so that stress is prevented from being concentrated on a glue bonding surface, and the service life is prolonged.

Inventors

  • XIONG XIAOBO
  • PENG YI
  • Hu Mengquan

Assignees

  • 广东省广达电子科技有限公司

Dates

Publication Date
20260512
Application Date
20250427

Claims (6)

  1. 1. A large buzzer comprises a metal substrate (1); A piezoelectric ceramic sheet (2) arranged on the front surface of the metal substrate (1); The piezoelectric ceramic plate is characterized in that the left side and the right side of the metal substrate (1) are respectively provided with a side wing plate (3), the back of the side wing plate (3) is fixedly connected with a back plate (4), one side, far away from the side wing plate (3), of the back plate (4) extends to the back of the metal substrate (1), the front of the side wing plate (3) is fixedly connected with a front plate (5), and one side, far away from the side wing plate (3), of the front plate (5) extends to the front of the piezoelectric ceramic plate (2).
  2. 2. The large buzzer as claimed in claim 1, wherein the top of the side wing plate (3) is provided with a connecting plate (6), the front and the back of the connecting plate (6) are both connected with swinging rods (7) in a swinging manner, and one side of the swinging rods (7) away from the connecting plate (6) extends to the outer side of the side wing plate (3) and is fixedly connected with the side wing plate (3).
  3. 3. The large buzzer as claimed in claim 2, wherein the front surface of the swing rod (7) is provided with a bolt (8), the rear end of the bolt (8) sequentially penetrates through the swing rod (7) and the connecting plate (6) and extends into the connecting plate (6), and the connecting plate (6) is in threaded connection with the bolt (8).
  4. 4. A large buzzer as in claim 3, wherein the inner side of the side wing plate (3) is fixedly connected with a limit frame (9), and one side of the limit frame (9) side wing plate (3) extends to the outer side of the piezoelectric ceramic plate (2) and contacts with the edge of the piezoelectric ceramic plate (2).
  5. 5. The large buzzer as claimed in claim 4, wherein the two sides of the bottom of the connecting plate (6) are fixedly connected with the inserting pieces (10), and one side of the inserting pieces (10) far away from the connecting plate (6) extends to the two sides of the metal substrate (1) respectively and is mutually inserted with the metal substrate (1).
  6. 6. The large buzzer as claimed in claim 5, wherein the front surface of the front plate (5) is provided with a protrusion (11), the inner surface of the protrusion (11) is fixedly connected with a rubber pad (12), the back surface of the rubber pad (12) is inclined outwards, and the back surface of the rubber pad (12) is in contact with the front surface of the piezoelectric ceramic chip (2).

Description

Large-scale buzzing piece Technical Field The utility model relates to the technical field of buzzers, in particular to a large-sized buzzer. Background A buzzer is a common electronic sound generating element, mainly used for generating sound prompts or alarm signals, and is generally made of piezoelectric materials, and converts electric energy into mechanical vibration by using a piezoelectric effect so as to generate sound. For example, the Chinese patent net has a published patent application number of 202120832429.2 and is provided with a buzzer component, the buzzer component comprises a piezoelectric ceramic buzzer, a terminal, a shielding layer and a power signal wire, the piezoelectric ceramic buzzer comprises a piezoelectric ceramic piece and a substrate which are mutually attached, the piezoelectric ceramic piece is connected with the power signal wire, the power signal wire is also connected with the terminal, the shielding layer is coated outside the power signal wire, the shielding layer comprises a drainage wire and a conductive adhesive tape, the drainage wire is wound outside the power signal wire, the conductive adhesive tape comprises a coating film, a metal fiber wire and a conductive adhesive layer, the conductive adhesive layer is covered on the drainage wire, and the drainage wire is grounded after being connected with the terminal. According to the buzzer component, the shielding layer is coated on the power signal wire, so that the interference signal is shielded, and the anti-interference capability of the buzzer component is improved. However, the metal substrate and the piezoelectric ceramic plate in the conventional buzzer are mainly formed by sticking conductive adhesives, and when the buzzer continuously vibrates in the running process, the glue connected by a user can be degummed after being used for a long time, so that the metal substrate and the piezoelectric ceramic plate are separated. Therefore, design modification of the large-sized buzzer is required. Disclosure of utility model In order to solve the problems in the prior art, the utility model aims to provide a large-sized buzzer, which has the advantage of improving the connection stability, and solves the problems that the metal substrate and the piezoelectric ceramic sheet in the existing buzzer are mainly adhered by a special conductive adhesive, and when the buzzer continuously vibrates in the running process, the glue connected by a user can be degummed after being used for a long time, so that the metal substrate and the piezoelectric ceramic sheet are separated. In order to achieve the purpose, the utility model provides a technical scheme that the large buzzer comprises a metal substrate; The piezoelectric ceramic piece is arranged on the front surface of the metal substrate; the left side and the right side of the metal substrate are both provided with side wing plates, the back of the side wing plates is fixedly connected with a back plate, one side of the back plate, which is far away from the side wing plates, extends to the back of the metal substrate, the front of the side wing plates is fixedly connected with a front plate, and one side, which is far away from the side wing plates, of the front plate extends to the front of the piezoelectric ceramic plate. As the preferable mode of the utility model, the top of the side wing plate is provided with a connecting plate, the front surface and the back surface of the connecting plate are both connected with swinging rods in a swinging way, and one side of the swinging rod away from the connecting plate extends to the outer side of the side wing plate and is fixedly connected with the side wing plate. As preferable in the utility model, the front surface of the swing rod is provided with a bolt, the rear end of the bolt sequentially penetrates through the swing rod and the connecting plate and extends into the connecting plate, and the connecting plate is in threaded connection with the bolt. Preferably, the inner side of the side wing plate is fixedly connected with a limit frame, and one side of the side wing plate of the limit frame extends to the outer side of the piezoelectric ceramic plate and contacts with the edge of the piezoelectric ceramic plate. As the preferable mode of the utility model, the two sides of the bottom of the connecting plate are fixedly connected with the plug-in pieces, and one side of the plug-in pieces far away from the connecting plate extends to the two sides of the metal substrate respectively and is mutually plugged with the metal substrate. As the preferable mode of the utility model, the front surface of the front plate is provided with the bulge, the inner surface of the bulge is fixedly connected with the rubber cushion, the back surface of the rubber cushion is arranged to be inclined outwards, and the back surface of the rubber cushion is contacted with the front surface of the piezoelectric ceramic piece. Compared