Buzzer

Abstract

The invention relates to a buzzer. The buzzer comprises a base; the outer shell is made of a conductive material and arranged on the base, a sounding cavity is defined by the outer shell and the base, and the outer shell is further provided with an extending first electrode pin; the sound production module comprises a piezoelectric plate assembly and a substrate attached to the piezoelectric plate assembly, and the sound production module is arranged in the outer shell and is electrically connected with the outer shell; the vibrating needle is fixedly arranged on the base, one end of the vibrating needle is provided with a supporting part, the supporting part abuts against the piezoelectric plate assembly to form electric connection and support the sound production module, and the other end of the vibrating needle is provided with a second electrode pin which is led out.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a buzzer. Background Art

[0002] Buzzer is a common sound output device, which is widely used in electronic devices as an alarm or notification tool.

[0003] Buzzers generally include piezoelectric buzzers and electromagnetic buzzers. Piezoelectric buzzers work by using the piezoelectric effect, that is, when the piezoelectric material is subjected to voltage changes, it will produce mechanical deformation and sound. The sound module of a piezoelectric buzzer is generally composed of an elastic substrate and a piezoelectric sheet. The piezoelectric sheet vibrates when the voltage changes, driving the substrate to vibrate and produce sound.

[0004] In order to realize the electrical connection of the piezoelectric sheet, it is generally necessary to carry out wiring processing inside the buzzer housing. The wiring method makes the assembly process more complicated. At the same time, the lead wires will also occupy the space of the internal sound cavity, affecting the sound effect. Summary of the invention

[0005] The present application provides a buzzer to solve the above technical problems.

[0006] In a first aspect, the present application provides a buzzer, comprising: Base; An outer shell, which is made of a conductive material, is disposed on the base and forms a sound-emitting cavity with the base. The outer shell is also provided with an extended first electrode pin; A sound module, comprising a piezoelectric sheet assembly and a substrate arranged in contact with the piezoelectric sheet assembly, wherein the sound module is arranged in the outer shell and is electrically connected to the outer shell; The spring pin is fixedly arranged on the base, one end of which is provided with a supporting portion, the supporting portion abuts against the piezoelectric sheet assembly to form an electrical connection and support the sound module, and the other end is provided with a second electrode pin.

[0007] Preferably, the outer shell is made of metal material.

[0008] Preferably, a limiting step is provided inside the outer shell, and one side of the sound module is fitted on the limiting step, and the other side is fixed by abutting against the supporting portion of the elastic pin.

[0009] Preferably, the first electrode pin is led out from the bottom edge of the outer shell.

[0010] Preferably, the elastic pin is fixed to the base via a fixing portion, and the supporting portion of the elastic pin is in a Y-shaped structure.

[0011] Preferably, the fixing portion is fixed at a center position of the base.

[0012] Preferably, the number of the elastic pins is two, and the support portions of the two elastic pins are cross-arranged to form an X shape.

[0013] Preferably, the fixing parts of the two spring pins are respectively arranged at eccentric positions of the base and are symmetrically arranged based on the center position of the base.

[0014] Preferably, the substrate is provided with a plurality of corrugated portions spreading from the center to the periphery.

[0015] Preferably, the piezoelectric sheet assembly includes a plurality of stacked piezoelectric sheets, and the plurality of piezoelectric sheets are electrically connected via contact.

[0016] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The buzzer provided in the embodiment of the present application has an outer shell made of conductive material, which is in contact with the sound module during assembly, so that it can be used as an electrode. The other side of the sound module is contacted and supported by a spring pin to form an electrical connection, so that the outer shell and the spring pin form an electrode pair, avoiding the trouble of wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A schematic diagram of the buzzer structure provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure decomposition of a buzzer provided in an embodiment of the present application; Figure 3 A schematic diagram of the base structure provided in an embodiment of the present application; Figure 4 A schematic diagram of the outer shell structure provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of the sound module provided in the embodiment of the present application; Figure 6 A schematic diagram of a spring pin support structure provided in an embodiment of the present application; Figure 7 A schematic diagram of the buzzer structure provided in an embodiment of the present application (another implementation); Figure 8 A schematic diagram of a substrate structure provided in an embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the piezoelectric sheet assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0024] like Figure 1 and Figure 2 The buzzer provided in the embodiment of the present application is shown, and the buzzer can be applied to various electronic devices such as alarms, toys, printers, and copiers as a sound-generating device. Specifically, the buzzer includes: a base 1, an outer shell 2, a sound-generating module 3, and a spring pin 4.

[0025] In this embodiment, Figure 3 As shown, the base 1 is mainly used to support the entire device. Its shape is generally a circular structure, but other polygonal structures can also be used. It is made of non-conductive materials, such as plastic. The base 1 adopts a lightweight structure and is provided with multiple reinforcing rib structures to ensure structural strength while reducing the amount of materials used and the weight of the device itself.

[0026] In this embodiment, Figure 4 As shown, the outer shell 2 is made of conductive material, and is disposed on the base 1 to form a sound-emitting cavity 20 together with the base 1 . The outer shell 2 is also provided with an extended first electrode pin 21 .

[0027] In this embodiment, Figure 5 As shown, the sound module 3 includes a piezoelectric sheet assembly 31 and a substrate 32 bonded to the piezoelectric sheet assembly 31. The sound module 3 is arranged in the outer shell 2 and is electrically connected to the outer shell 2. This avoids the trouble of wiring in the sound cavity 20, making the sound cavity more spacious and the sound effect better.

[0028] In this embodiment, Figure 6 As shown, the spring pin 4 is fixedly arranged on the base 1, and a support portion 41 is arranged at one end thereof, and the support portion 41 abuts against the piezoelectric sheet assembly 31 to form an electrical connection and support the sound module 3, and a second electrode pin 42 is arranged at the other end. The use of the spring pin 4 to support the sound module 3 can reduce the complexity of the internal structure of the buzzer, and at the same time, the use of the spring pin 4 to support and form an electrical connection at the same time also eliminates the wiring lead-out of the other electrode.

[0029] As a preferred embodiment, the outer shell 2 is made of metal material, which has sufficient structural strength and good electrical conductivity.

[0030] In this embodiment, continue to refer to Figure 4 As shown, combined with Figure 5 and Figure 6 A limiting step 22 is provided inside the outer shell 2, and one side of the sound module 3 is fitted on the limiting step 22, and the other side is fixed by the supporting portion 41 of the elastic pin 4.

[0031] In this embodiment, the first electrode pin 21 is led out from the bottom edge of the outer shell 2, which is convenient for connecting with the solder joint on the circuit board.

[0032] In this embodiment, if Figure 2 As shown, the spring pin 4 is fixed to the base 1 through a fixing portion 40, and the supporting portion 41 of the spring pin 4 is in a Y-shaped structure. Specifically, the spring pin 4 can be made of a metal spring sheet, and at the supporting portion 41, two branches are formed by cutting and bending to form a Y-shaped structure. The metal spring sheet has a certain structural strength and can support the sound module 3.

[0033] In a further embodiment, the fixing portion 40 is fixed at the center of the base 1 , so that the Y-shaped supporting portion 41 can form a symmetrical support for the sound module 3 to avoid the problem of displacement of the substrate 32 .

[0034] As another optional implementation, Figure 7 As shown, there are two spring pins 4, and the support parts 41 of the two spring pins 4 are arranged crosswise to form an X shape, which has a relatively stable support. Of course, in an optional embodiment, a plurality of spring pins 4 can also be used to achieve a better support effect.

[0035] Furthermore, the fixing portions 40 of the two spring pins 4 are respectively disposed at eccentric positions of the base 1 , and are symmetrically disposed based on the central position of the base 1 .

[0036] In this embodiment, if Figure 8 As shown, the substrate 32 is provided with a plurality of corrugated portions 321 that spread from the center to the periphery. When the electrode is energized, the vibration of the piezoelectric sheet assembly 31 can gradually spread from the center of the substrate 32 to the outside, thereby increasing the vibration energy of the substrate.

[0037] In this embodiment, if Fig. 9 As shown, the piezoelectric sheet assembly 31 includes a plurality of stacked piezoelectric sheets 310 , and the plurality of piezoelectric sheets 310 are electrically connected via electrode contacts.

[0038] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0045] The above is a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A buzzer, characterized in that: include: Base (1); An outer shell (2) made of a conductive material, disposed on the base (1) and forming a sound-emitting cavity (20) with the base (1); the outer shell (2) is further provided with an extended first electrode pin (21); A sound-generating module (3) comprising a piezoelectric sheet assembly (31) and a substrate (32) arranged in contact with the piezoelectric sheet assembly (31), wherein the sound-generating module (3) is arranged in the outer shell (2) and is electrically connected to the outer shell (2); The spring pin (4) is fixedly arranged on the base (1), one end of which is provided with a support portion (41), the support portion (41) abutting against the piezoelectric sheet assembly (31) to form an electrical connection and support the sound module (3), and the other end of which is provided with a second electrode pin (42).

2. The buzzer according to claim 1, characterized in that: The outer shell (2) is made of metal material.

3. The buzzer according to claim 1, characterized in that: A limiting step (22) is provided inside the outer shell (2); one side of the sound module (3) is fitted on the limiting step (22) and the other side is fixedly abutted by the supporting portion (41) of the elastic pin (4).

4. The buzzer according to claim 3, characterized in that: The first electrode pin (21) is led out from the bottom edge of the outer shell (2).

5. The buzzer according to claim 1, characterized in that: The spring pin (4) is fixed to the base (1) via a fixing portion (42); the supporting portion (41) of the spring pin (4) is in a Y-shaped structure.

6. The buzzer according to claim 5, characterized in that: The fixing portion (42) is fixed at the center position of the base (1).

7. The buzzer according to claim 1, characterized in that: The number of the elastic pins (4) is two, and the support portions (41) of the two elastic pins (4) are arranged to cross each other in an X shape.

8. The buzzer according to claim 7, characterized in that: The fixing portions (42) of the two spring pins (4) are respectively arranged at eccentric positions of the base (1), and are symmetrically arranged based on the central position of the base (1).

9. The buzzer according to claim 1, characterized in that: The substrate (32) is provided with a plurality of corrugated portions (321) that spread from the center to the periphery.

10. The buzzer according to claim 1, characterized in that: The piezoelectric sheet assembly (31) comprises a plurality of piezoelectric sheets (310) stacked in layers, and the plurality of piezoelectric sheets (310) are electrically connected via contact.

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