Buzzer

Abstract

The utility model relates to a buzzer which comprises a surface cover connected with a rear cover, the rear cover is internally provided with a buzzing piece, and the buzzing piece is connected with a PCB through a wire; the rear cover is provided with an inner cavity, the inner cavity is provided with a step part, the buzzing piece is placed on the step part, one end of the wire is connected with the buzzing piece, and the other end of the wire is connected with the PCB; an inner cavity is formed in the rear cover, a clamping groove is formed in the inner cavity, the PCB is arranged in the clamping groove, part of the PCB is arranged in the clamping groove, and part of the PCB penetrates through the clamping groove, protrudes out of the outer side of the rear cover and is in contact connection with an external connector. According to the buzzer, the PCB is directly inserted into the external connector, and the buzzer is assembled and conducted with an external structure in a plug-in mode, so that compared with a traditional welding mode at present, the plug-in scheme has the advantages that the welding procedures are reduced, the cost is reduced, and the risks of performance failure or appearance structure deformation and the like possibly caused by welding are also avoided.

Description

Technical Field

[0001] This application relates to the technical field of buzzers, and in particular to a buzzer. Background Technology

[0002] A piezoelectric buzzer is an electroacoustic transducer that uses DC voltage power and is widely used as a sound-generating device in electronic products such as alarms, computers, printers, copiers, electronic toys, automotive electronic equipment, telephones, and timers.

[0003] Existing buzzers typically connect to external circuit boards using either pins or wires. During assembly, soldering is usually required to secure the pins or wires to the circuit board and ensure conductivity. This type of structure requires high-temperature soldering during assembly; improper process control can damage the buzzer's performance or appearance.

[0004] The internal connections of existing buzzers typically use wires to connect the buzzer chip to the pins or adapter board. During production, these wires are prone to tangling, necessitating a wire-sorting process to separate them, thus increasing product costs. Furthermore, due to the small size and limited internal space of buzzers, the separated wires can easily become tangled again when the casing is closed. The vibrations generated during buzzer operation cause the tangled wires to rub against each other, and prolonged friction can lead to short circuits, causing product failure.

[0005] Most buzzers require the use of adapter boards to connect the internal connecting wires to the pins or leads, which increases the product cost. Summary of the Invention

[0006] To overcome the problems existing in related technologies, this application provides a buzzer that simplifies the assembly structure, improves product reliability, and reduces product cost.

[0007] This application provides a buzzer, comprising: a front cover connected to a rear cover, a buzzer fin disposed within the rear cover, the buzzer fin being connected to a PCB board via a wire; the rear cover having an inner cavity with a stepped portion, the buzzer fin being placed on the stepped portion, one end of the wire being connected to the buzzer fin and the other end being connected to the PCB board; the inner cavity having a slot, the PCB board being disposed within the slot, one end of the PCB board passing through the slot and protruding beyond the outer side of the rear cover to contact and connect with an external connector.

[0008] In the aforementioned buzzer, a spring-loaded buckle is provided on the outer side of the rear cover, and the spring-loaded buckle is connected to the corresponding external connector via a snap-fit.

[0009] The inner cavity is provided with a connecting wire guide column, the connecting wire guide column separates the wires to avoid winding of the wires.

[0010] The rear cover is provided with a guide structure, so that the rear cover is asymmetrically arranged.

[0011] The card slot is provided with a guide part to guide insertion of the PCB into the card slot.

[0012] The card slot is provided with a positioning buckle, the positioning buckle is provided with an elastic arm and a clamping point at a free end of the elastic arm, and the clamping point abuts against an upper edge of the PCB.

[0013] The bottom of the card slot is provided with a through hole, the PCB protrudes from the through hole to connect with an external connector.

[0014] The positioning buckle is arranged in the card slot above the through hole.

[0015] The through hole is provided with a sealing groove outside, and the sealing groove is provided with an adhesive.

[0016] The rear cover is provided with a positioning groove, the face cover is provided with a protrusion corresponding to the positioning groove, and the protrusion is clamped in the positioning groove.

[0017] The technical scheme provided by the application can have the following beneficial effects: the buzzer is directly inserted into an external connector, assembled with an external structure by plugging, and connected, compared with a traditional welding method, the plugging scheme reduces the welding process, reduces the cost, and avoids the risk of performance failure or appearance structure deformation caused by welding. In addition, the buzzer is designed with an inner connecting wire guide column, which effectively avoids the risk of product failure caused by winding and wear of the inner connecting wire.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout the several views, and in which:

[0020] Figure 1 is a structural schematic diagram of the buzzer according to an embodiment of the application;

[0021] Figure 2 is a partial structure exploded schematic diagram of the buzzer shown in the embodiments of the present application;

[0022] Figure 3 is a partial structure schematic diagram of the buzzer shown in the embodiments of the present application;

[0023] Figure 4 is another view of the partial structure schematic diagram of the buzzer shown in the embodiments of the present application;

[0024] Figure 5 is a structure schematic diagram of the back cover of the buzzer shown in the embodiments of the present application;

[0025] Figure 6 is a structure schematic diagram of another view of the back cover of the buzzer shown in the embodiments of the present application;

[0026] Figure 7 is a structure schematic diagram of the back cover of the buzzer shown in the embodiments of the present application from a top view angle;

[0027] Figure 8 is a structure schematic diagram of the back cover of the buzzer shown in the embodiments of the present application from a cross-sectional view angle.

[0028] The accompanying drawings are as follows:

[0029] Face cover 1; protrusion 11;

[0030] Back cover 2; inner cavity 21; step portion 22; clamping groove 23; guide portion 231; through hole 232; positioning clasp 24; elastic arm 241; clamping point 242; sealing groove 25; elastic buckle 26; positioning groove 27; connection line guide column 28; guide structure 29;

[0031] Metal sheet 3;

[0032] Piezoelectric ceramic sheet 4;

[0033] Wire 5;

[0034] PCB board 6. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application is more thorough and complete, and the scope of the present application is fully conveyed to those skilled in the art.

[0036] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0037] It should be understood that, although the terms "first," "second," "third," etc. can be used herein to describe various information, the information should not be limited by these terms. These terms are used only to distinguish one piece of information from another. For example, a first information can also be termed a second information, and, similarly, a second information can also be termed a first information, without departing from the scope of the present application. Therefore, the features defined with "first," "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0038] The technical solutions of the embodiments of the present application are described in detail below with reference to the drawings.

[0039] Referring to Figures 1 to 4The utility model provides a buzzer, including: face cover 1 is connected with back cover 2, be equipped with buzzer reed in back cover 2, buzzer reed is connected with PCB board 6 through wire 5, in the embodiment, be equipped with metal sheet 3 and piezoelectric ceramic sheet 4 on buzzer reed, piezoelectric ceramic sheet 4 is bonded on metal sheet 3, back cover 2 is equipped with inner chamber 21, inner chamber 21 is equipped with step portion 22, buzzer reed is placed on step portion 22, in the embodiment, step portion 22 is annular structure, is used for supporting buzzer reed, and the buzzer reed is placed on annular structure, in the embodiment, wire 5 is two connecting wires, one end of wire 5 is electrically connected with buzzer reed and is conducted, and the other end is electrically connected with PCB board 6, inner chamber 21 is equipped with clamping groove 23, and PCB board 6 is arranged in clamping groove 23, part of PCB board 6 is arranged in clamping groove 23, and part of PCB board 6 protrudes from the outside of back cover 2 and is connected with external connector, in the embodiment, the PCB board 6 is assembled in the clamping groove 23, and the face cover 1 is welded or glued with the back cover 2, the buzzer, simplify the structure of assembly, improve the reliability of product, reduce the cost of product, the buzzer is installed by using PCB board 6 and connector, can avoid the welding risk of buzzer use, reduces the failure risk of buzzer use end, effectively improves the product reliability, the buzzer is directly inserted into the external connector through PCB board 6, and is assembled, is conducted with external structure through the way of insertion, compared with the traditional welding mode, the plug-in scheme reduces the welding process, reduces the cost, and avoids the performance failure or appearance structure deformation risk caused by welding.

[0040] Preferably, referring to Figures 1 to 4 , the outside of the back cover 2 is provided with a spring buckle 26, which is buckled with the external connector. The buzzer uses the installation scheme of PCB board 6 and connector plug-in, simplifies the assembly process of the buzzer in use, greatly improves the assembly efficiency of the buzzer in use.

[0041] In some optional embodiments, referring to Figure 3 , Figure 6 , Figure 7 , Figure 8 , the inner chamber 21 is provided with a connecting wire guide column 28, which separates the wire 5 to avoid winding. The internal connecting wire 5 is separated by the connecting wire guide column 28 to avoid product short circuit failure caused by wire winding. The connecting wire 5 is connected with the PCB board 6, or the FPC is connected with the PCB (i.e. hard board and soft board combination) or the FPC is directly out, which can save the adapter board, reduce the number of product parts and reduce the product cost. The buzzer is designed with an internal connecting wire guide column 28 to effectively avoid the risk of product failure caused by internal connecting wire winding and wear.

[0042] Further, referring to Figures 3 to 5 , the rear cover 2 is provided with a guide structure 29, so that the rear cover 2 is asymmetrically shaped. The rear cover 2 is provided with a guide structure 29 and the asymmetry of the structure, which plays a foolproof role when using assembly, avoids the error of the assembly direction of the buzzer during assembly, and avoids the non-conduction of the PCB 6 and the connector.

[0043] Specifically, referring to Figure 3 , Figure 6 , Figure 7 , Figure 8 , the card slot 23 is provided with a guide part 231 for guiding the PCB 6 to be inserted into the card slot 23. In this embodiment, the guide part 231 is a beveling treatment in the assembly direction of the PCB 6, and the beveling angle is greater than 90 degrees (the included angle with the horizontal direction).

[0044] In some preferred embodiments, referring to Figure 3 , Figure 6 , Figure 7 , Figure 8 , the card slot 23 is provided with a positioning buckle 24 for clamping and positioning during use, and the total height of the structure is flush with or lower than the bottom of the rear cover 2. The positioning buckle 24 is provided with a resilient arm 241 and a clamping point 242 at the free end of the resilient arm 241, and the clamping point 242 abuts against the upper edge of the PCB 6 to prevent the PCB 6 from being withdrawn and causing poor contact due to stress during insertion. The bottom of the card slot 23 is provided with a through hole 232, and the PCB 6 protrudes from the rear cover 2 and connects with the external connector through the through hole 232. The positioning buckle 24 is located above the through hole 232 and is located in the card slot 23. The shape of the positioning buckle 24 is not limited to a straight buckle or an arc buckle. The outer side of the through hole 232 is provided with a sealing groove 25, and the sealing groove 25 is provided with an adhesive, which realizes the sealing of the buzzer after the PCB 6 is assembled into the rear cover 2. This kind of buzzer is designed with a sealing groove 25 structure, which is sealed after the PCB 6 is assembled, effectively improves the sound pressure performance of the buzzer and avoids the entry of external foreign matters into the buzzer, and improves the reliability.

[0045] Optionally, referring to Figure 1 , Figure 2 , the rear cover 2 is provided with a positioning groove 27, and the face cover 1 is provided with a protrusion 11 corresponding to the positioning groove 27, the protrusion 11 is clamped in the positioning groove 27, and the assembly error of the buzzer is avoided.

[0046] The buzzer reduces the use of the adapter plate and the number of product parts due to the direct output of the PCB 6. Meanwhile, the introduction of the guide part 231 of the PCB 6 improves the assembly efficiency of the product PCB and reduces the product cost.

[0047] Embodiments of the application have been described above, with the understanding that these descriptions are exemplary only, and are not intended to be exhaustive or to limit the scope of the embodiments disclosed. Many modifications and variations are possible in light of the above teachings. It is contemplated that the use of the terms "including," "comprising," "having," "containing," or "including" and variations thereof, are intended to be equivalent to the term "consisting of" or "consisting of." The use of the term "about" is intended to allow for variations, such as would be expected by one of ordinary skill in the art, such as due to differences in measurement or measurement techniques. The use of the term "comprising" is intended to mean that other elements can also be present. The use of the term "or" is intended to mean an inclusive "or," rather than an exclusive "or." The use of the term "at least one" is intended to mean one or more, for example, of an event or occurrence, optionally including zero. The use of the term "plurality" is intended to mean two or more, for example, of an event or occurrence, optionally including zero. The use of the term "another" is intended to mean an additional or another one, for example, of an event or occurrence, optionally including zero.

Claims

1. A buzzer characterized by comprising: The utility model relates to a face cover, the face cover is connected with the back cover, the back cover is equipped with the buzzer piece in, the buzzer piece is connected with the PCB board through the wire; The back cover is equipped with the inner chamber, the inner chamber is equipped with the step part, the buzzer piece is placed on the step part, one end of the wire is connected with the buzzer piece, and the other end is connected with the PCB board; The inner chamber is equipped with the clamping slot, the PCB board is arranged in the clamping slot, and one end of the PCB board protrudes from the outer side of the back cover and is in contact with the external connector. The outer side of the back cover is equipped with the elastic buckle, and the elastic buckle is buckled with the external connector.

2. The buzzer of claim 1, wherein: The inner chamber is equipped with the connecting wire guide column, the connecting wire guide column separates the wire, and winding of the wire is avoided.

3. The buzzer of claim 1, wherein: The back cover is equipped with the guide structure, so that the back cover is not asymmetrically arranged.

4. The buzzer of claim 1, wherein: The clamping slot is equipped with the guide part, and the PCB board is inserted into the clamping slot.

5. The buzzer of claim 1, wherein: The clamping slot is equipped with the positioning buckle, the positioning buckle is equipped with the elastic arm and the clamping point arranged at the free end of the elastic arm, and the clamping point abuts against the upper edge of the PCB board.

6. The buzzer of claim 1, wherein: The bottom of the clamping slot is equipped with the through hole, the PCB board passes through the through hole and protrudes from the back cover to be connected with the external connector.

7. The buzzer of claim 6, wherein: The positioning buckle is arranged in the clamping slot above the through hole.

8. The buzzer of claim 7, wherein: The outer side of the through hole is equipped with the sealing groove, and the sealing groove is equipped with the adhesive.

9. The buzzer of claim 8, wherein: The back cover is equipped with the positioning groove, the face cover is equipped with the protrusion corresponding to the positioning groove, and the protrusion is clamped in the positioning groove.

10. The buzzer of claim 1, wherein: ​

Images