Buzzer structure

Abstract

The utility model provides a buzzer structure, and belongs to the field of buzzer structures. The buzzer structure comprises a buzzer body, an opening is formed in the lower portion of the buzzer body, the buzzer structure further comprises a cavity cover covering the opening portion in the lower portion of the buzzer body and a buzzing piece arranged in the buzzer body, the top face of the buzzer body can vibrate, and the buzzer body is arranged in the cavity cover. A resonant cavity is formed between the top surface of the buzzer body and the buzzing piece, a sound outlet hole is formed in the middle of the top surface, and when the buzzing piece vibrates, the top surface can resonate with the buzzing piece, and sound is produced through the sound outlet hole. The beneficial effects of the utility model are that under the same size, the loudness of the buzzer can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of buzzer structures, in particular to a buzzer structure. Background Art

[0002] A buzzer is an integrated electronic sounder powered by DC voltage. It is widely used as a sound-generating device in electronic products such as computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers, etc. to provide reminders or warnings.

[0003] A buzzer's sound is primarily generated by the vibration of the buzzer disc, whose volume is primarily determined by the vibration area, frequency, and design of the sound chamber. Generally speaking, a buzzer disc with a larger vibration area produces a louder sound. Therefore, existing technologies typically increase buzzer loudness by increasing the disc's area. However, this sacrifice of area inevitably increases manufacturing costs and hinders product miniaturization. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a buzzer structure.

[0005] The present invention provides a buzzer structure, comprising a buzzer body, the bottom of which is open, the buzzer structure further comprising a cavity cover covering the bottom opening of the buzzer body, and a buzzer plate arranged in the buzzer body, wherein the top surface of the buzzer body is capable of vibrating, a resonance cavity is formed between the top surface of the buzzer body and the buzzer plate, a sound outlet hole is provided in the middle of the top surface, and when the buzzer plate vibrates, the top surface is capable of resonating with the buzzer plate and emitting sound through the sound outlet hole.

[0006] Furthermore, the buzzer piece includes a first electrode arranged in the middle and a second electrode arranged around the first electrode, and the first electrode and the second electrode are respectively provided with a conductive structure.

[0007] Furthermore, the thickness of the top surface is 0.5-0.8 mm.

[0008] Furthermore, the thickness of the side wall of the buzzer body is 0.9-1.3 mm.

[0009] Furthermore, the buzzer body and the cavity cover are made of plastic.

[0010] Furthermore, the plastic material includes ABS, PC or PA.

[0011] Furthermore, the buzzer structure is circular, the inner wall of the buzzer body is provided with a circle of stepped surfaces, and the outer periphery of the buzzer plate is fixed to the stepped surface by sealant.

[0012] Furthermore, the conductive structure is a conductive wire, a notch for wiring is provided below the step surface of the side wall of the buzzer body, and a limiting protrusion is provided at a position of the cavity cover corresponding to the notch.

[0013] Furthermore, the diameter of the buzzer structure is 6 to 7 mm.

[0014] Furthermore, the diameter of the sound hole is 0.8-1.5 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: under the premise of limited size and space, the present invention improves the thickness of the top surface of the buzzer body so that when the buzzer vibrates, it can resonate with the vibration frequency of the buzzer, so that the buzzer of the same size can produce a louder sound, which is conducive to reducing production costs;

[0016] Through the buzzer structure of the present invention, the pressure generated on the air in the sound cavity is greater. Combined with the sound hole design, the air is squeezed and released quickly through the small hole to produce sound, which can enable the buzzer structure of the present invention to form a cavitation-like phenomenon, thereby significantly enhancing the sound amplification effect.

[0017] Through the optimization of the present invention, the sound produced by the 6-7mm buzzer is louder, reaching 60db, meeting the needs of daily use, enabling it to be applied to miniaturized and micro-miniaturized products, greatly expanding the use of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the decomposition structure from another perspective of the utility model. DETAILED DESCRIPTION

[0022] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this utility model or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0023] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 3 As shown, as an embodiment of the present invention, the overall structure of the buzzer structure 100 of this example is circular, including a buzzer body 101, a buzzer piece 102 and a cavity cover 103, wherein the buzzer body 101 and the cavity cover 103 enclose a sound cavity, the buzzer piece 102 is arranged in the sound cavity, and the sound cavity is horizontally divided into two parts, the upper part is a resonance cavity enclosed by part of the side wall 1011, the top surface 1012 and the buzzer piece 102, and a sound hole 105 is provided in the middle of the top surface 1012 of the buzzer body 101 away from the cavity cover 103, the top surface 1012 is thinned relative to the side wall 1011 of the buzzer body 101, and can vibrate. When the buzzer piece 102 vibrates, the top surface 1012 can resonate with the buzzer piece 102 and make sound through the sound hole 105.

[0026] This utility model changes the design concept. Under the premise of limited size and space, by creatively improving the thickness of the top surface of the buzzer body, it can resonate with the vibration frequency of the buzzer when it vibrates, so that the buzzer can produce a louder sound with the same size, which is conducive to reducing production costs. The shape of this example is not limited to circular, and can also be applied to other buzzer structures on the market, such as oval.

[0027] It is worth mentioning that the diameter of the buzzer of the present invention can be 6 to 7 mm, which can meet the sound output loudness of 10 mm or even larger sizes in the existing technology. Through the technological breakthrough of the present invention, the sound produced by the 6 to 7 mm buzzer is louder and can reach 60 dB, meeting the needs of daily reminders and other uses, so that it can be used in miniaturized and micro-miniaturized products, greatly expanding the use of the present invention.

[0028] The buzzer structure of the present invention can be matched with a chip in application to form an integrated reminder. The overall size can be less than 2 cm, so it can be pasted or embedded on any product with a size of more than 2 cm, thereby further expanding the application of the present invention, facilitating the anti-loss and search of small objects, and having strong practicality.

[0029] like Figure 1-Figure 3 As shown, in this example, a circle of stepped surface 1013 is provided on the inner wall of the buzzer body 101 , and the outer periphery of the buzzer plate 102 is fixed on the stepped surface 1013 by means of sealant.

[0030] Correspondingly, a circle of ribs 1031 is provided on the upper surface of the cavity cover 103 , which can be buckled and pressed onto the step surface 1013 to strengthen the connection of the buzzer 102 .

[0031] The buzzer 102 of the present invention includes a first electrode 1021 disposed in the middle and a second electrode 1022 disposed around the first electrode 1021 . The first electrode 1021 and the second electrode 1022 are respectively provided with a conductive structure.

[0032] The conductive structure in this example is a conductive wire 104. A notch 1014 is provided below the stepped surface of the side wall of the buzzer body 101 for leading out the conductive wire 104 and connecting it to the power supply structure. A position-limiting protrusion 1032 is provided on the cavity cover 103 corresponding to the notch 1014 to limit the installation of the cavity cover 103 and facilitate assembly guidance of the cavity cover 103 on the buzzer body 101. The conductive structure in this example can also be a conductive thimble or other structure.

[0033] The buzzer body 101 and the cavity cover 103 of the present invention are made of plastic material, such as ABS, PC, PA, etc., which can be injection molded. The wall thickness of the side wall 1011 of the buzzer body 101 is designed to be 0.9-1.3 mm to ensure strength and avoid injection molding deformation, and the thickness of the top surface 1012 is 0.5-0.8 mm. The thinning design enables it to resonate with the vibration frequency of the buzzer.

[0034] The diameter of the buzzer structure in this example is 6-7 mm, and the diameter of the sound hole is designed to be 0.8-1.5 mm. The buzzer plate vibrates in the sound cavity to generate air pressure, forming a cavitation phenomenon. The air is squeezed and quickly released through the small hole to produce sound. The above points can enhance the sound amplification effect, making the sound produced by the 6-7 mm buzzer plate louder.

[0035] The buzzer structure of the present invention generates greater pressure on the air in the sound cavity. Combined with the sound hole design, the air is squeezed and quickly released through the small hole to produce sound, which enables the buzzer structure of the present invention to form a cavitation-like phenomenon, thereby significantly enhancing the sound amplification effect. In addition, through the optimization of the present invention, the sound cavity can resonate with the micro buzzer piece, concentrating the sound together and emitting it. When the micro buzzer piece 102 is subjected to piezoelectric vibration and the resonance cavity has an appropriate resonant frequency, the sound pressure at a specific frequency can be increased and a specific bandwidth can be obtained by controlling the position of the two. The sound will be concentrated and amplified, so that the loudness of the buzzer structure of the present invention can meet the reminder requirements of small or even miniaturized products.

[0036] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A buzzer structure, characterized in that: The buzzer structure includes a buzzer body with an opening at the bottom. The buzzer structure also includes a cavity cover covering the lower opening of the buzzer body and a buzzer plate arranged in the buzzer body. The top surface of the buzzer body can vibrate, and a resonance cavity is formed between the top surface of the buzzer body and the buzzer plate. A sound outlet hole is provided in the middle of the top surface. When the buzzer plate vibrates, the top surface can resonate with the buzzer plate and emit sound through the sound outlet hole.

2. The buzzer structure according to claim 1, characterized in that: The buzzer piece includes a first electrode arranged in the middle and a second electrode arranged around the first electrode, and the first electrode and the second electrode are respectively provided with a conductive structure.

3. The buzzer structure according to claim 1, characterized in that: The thickness of the top surface is 0.5-0.8 mm.

4. The buzzer structure according to claim 3, characterized in that: The thickness of the side wall of the buzzer body is 0.9-1.3 mm.

5. The buzzer structure according to claim 1, characterized in that: The buzzer body and the cavity cover are made of plastic.

6. The buzzer structure according to claim 5, characterized in that: The plastic material includes ABS, PC or PA.

7. The buzzer structure according to any one of claims 1 to 6, characterized in that: The buzzer structure is circular, the inner wall of the buzzer body is provided with a circle of stepped surfaces, and the outer periphery of the buzzer plate is fixed on the stepped surface by sealant.

8. The buzzer structure according to claim 7, characterized in that: A notch for wiring is provided below the step surface of the side wall of the buzzer body, and a limiting protrusion is provided at a position of the cavity cover corresponding to the notch.

9. The buzzer structure according to claim 7, characterized in that: The diameter of the buzzer structure is 6 to 7 mm.

10. The buzzer structure according to claim 8, characterized in that: The diameter of the sound hole is 0.8-1.5 mm.

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