Buzzer structure capable of improving loudness

Abstract

The invention provides a buzzer structure capable of improving loudness, and belongs to the field of buzzer structures. The buzzer structure capable of improving loudness comprises a buzzer body, a buzzing piece and a cavity cover, the buzzer body and the cavity cover define a sounding cavity, a sound outlet hole is formed in the middle of the top face, away from the cavity cover, of the buzzer body, the buzzing piece is arranged in the sounding cavity, and when the buzzing piece vibrates, the sound outlet hole is formed in the middle of the top face, away from the cavity cover, of the buzzer body. The top surface is thinned relative to the side wall of the buzzer body, and the top surface can resonate with the buzzing sheet and sound through the sound outlet hole. The beneficial effect of the invention is that under the same size, the loudness of the buzzer can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of buzzer structures, and in particular to a buzzer structure capable of improving loudness. Background Art

[0002] A buzzer is an electronic sounder with an integrated structure, 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., for reminders or warnings.

[0003] The buzzer is mainly generated by the vibration of the buzzer plate, and the volume of the buzzer plate is mainly determined by the vibration area, vibration frequency and the design of the sound cavity. Generally speaking, a buzzer plate with a larger vibration area tends to produce a louder sound. Therefore, the prior art usually increases the loudness of the buzzer by increasing the area of ​​the buzzer plate. This method of sacrificing area will inevitably increase the manufacturing cost of the product and is not conducive to the miniaturization and miniaturization of the product. Summary of the invention

[0004] In order to solve the problems in the prior art, the present invention provides a buzzer structure capable of improving the loudness.

[0005] The buzzer structure capable of improving loudness of the present invention comprises a buzzer body, a buzzer plate and a cavity cover, wherein the buzzer body and the cavity cover enclose a sound-producing cavity, a sound outlet hole is provided in the middle of the top surface of the buzzer body away from the cavity cover, the buzzer plate is arranged in the sound-producing cavity, and when the buzzer plate vibrates, the top surface is thinned relative to the side wall of the buzzer body, the top surface can resonate with the buzzer plate, and produce sound through the sound outlet hole.

[0006] Furthermore, the buzzer sheet 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 surface, and the outer periphery of the buzzer plate is fixed on the stepped surface by means of 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 corresponding to the notch on the cavity cover.

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

[0014] Furthermore, the diameter of the sound outlet 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 sheet with the same size can produce a greater loudness, 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. With the sound outlet hole design, the air is squeezed and quickly released through the small hole to produce sound, which can make the buzzer structure of the present invention 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 sheet is louder and can reach 60db, meeting the needs of daily use, so that it can be applied to miniaturized and micronized products, greatly expanding the application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the present invention or the solutions in the prior art, a brief introduction is 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 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the decomposition structure in the present invention;

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

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

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

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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 capable of improving the loudness is circular, including a buzzer body 101, a buzzer plate 102 and a cavity cover 103, wherein the buzzer body 101 and the cavity cover 103 enclose a sounding cavity, and a sound outlet hole 105 is provided in the middle of a top surface 1012 of the buzzer body 101 away from the cavity cover 103, and the buzzer plate 102 is arranged in the sounding cavity. When the buzzer plate 102 vibrates, the top surface 1012 is thinned relative to the side wall 1011 of the buzzer body 101, and the top surface 1012 can resonate with the buzzer plate 102 and make sound through the sound outlet hole 105.

[0026] The present invention changes the design concept. Under the premise of limited size and space, the top surface thickness of the buzzer body is creatively improved so that when the buzzer vibrates, it can resonate with the vibration frequency of the buzzer, so that the buzzer sheet of the same size can produce a louder sound, which is conducive to reducing production costs. The shape of this example is not limited to a circle, and can also be applied to other shapes of buzzer structures on the market, such as an ellipse.

[0027] It is worth mentioning that the diameter of the buzzer of the present invention can be 6-7mm, which can meet the sound output loudness of 10mm or even larger sizes in the existing technology. Through the technical breakthrough of the present invention, the sound produced by the 6-7mm buzzer is louder and can reach 60db, meeting the needs of daily reminders and other uses, so that it can be applied to miniaturized and micronized 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 be prepared into an integrated reminder, and the overall size can be less than 2 cm, so that it can be pasted or embedded in 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 convex 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 plate 102 .

[0031] The buzzer piece 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 conductive structures.

[0032] The conductive structure of this example is a conductive wire 104. A notch 1014 is provided below the step 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 limiting protrusion 1032 is provided at a position corresponding to the notch 1014 on the cavity cover 103 for limiting the installation of the cavity cover 103 and facilitating the assembly guide of the cavity cover 103 on the buzzer body 101. The conductive structure of this example can also adopt a conductive ejector pin 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 can resonate with the vibration frequency of the buzzer.

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

[0035] The buzzer structure of the present invention generates a greater pressure on the air in the sound cavity. With the sound hole design, the air is squeezed and quickly released through the small hole to generate sound, which enables the buzzer structure of the present invention to form a similar cavitation 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 sheet, and the sound is concentrated together and emitted. When the micro buzzer sheet 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 positions 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 modes described above are preferred implementation modes 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 modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. A buzzer structure capable of increasing loudness, characterized in that: The invention comprises a buzzer body, a buzzer plate and a cavity cover, wherein the buzzer body and the cavity cover enclose a sound-producing cavity, a sound outlet hole is provided in the middle of the top surface of the buzzer body away from the cavity cover, the buzzer plate is arranged in the sound-producing cavity, and when the buzzer plate vibrates, the top surface is thinned relative to the side wall of the buzzer body, the top surface can resonate with the buzzer plate, and produce sound through the sound outlet hole.

2. The buzzer structure capable of increasing loudness according to claim 1, characterized in that: The buzzer sheet 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 capable of increasing loudness according to claim 1, characterized in that: The thickness of the top surface is 0.5-0.8 mm.

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

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

7. The buzzer structure capable of increasing loudness 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 surface, and the outer periphery of the buzzer plate is fixed on the stepped surface by means of sealant.

8. The buzzer structure capable of increasing loudness 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 capable of increasing loudness according to claim 7, characterized in that: The diameter of the buzzer structure is 6-7 mm.

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

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