Lead type active buzzer

Abstract

The utility model discloses a lead type active buzzer, and particularly relates to the technical field of buzzers, the lead type active buzzer comprises a shell, a buzzing sheet is arranged in the shell, a first circuit board is arranged on the outer side of the shell, and a second circuit board is arranged in the shell and between the shell and the buzzing sheet. According to the utility model, through the corresponding cooperative use of the structures, the overall design is simple, the structure is reasonable, the input voltage of the product is reduced on the premise of ensuring sound production, the stability of sound pressure generation is ensured by adjusting the design of each circuit board of the buzzing sheet, and the buzzing sheet and the shell are fixed by adopting a ceramic edge fixing mode, so that the production efficiency is improved. And the mounting stability can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of buzzers, and more specifically, to a lead-type active buzzer. Background Art

[0002] 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. Its main function is to generate sound for prompts, alarms or specific sound signals. Buzzers are widely used in electronic products due to their small size, loud sound, low power consumption, simple structure and high reliability.

[0003] There are many types of buzzers in use today, which can be divided into active and passive types according to the input signals. Passive buzzers do not have an internal oscillation source and must be driven by radio waves of a certain frequency. Active buzzers have an internal oscillation source and will make a sound when DC power is passed through them. However, under the premise of ensuring the sound, a certain voltage is usually required to make the sound, which results in limitations and makes it impossible to increase the sound pressure while reducing the input voltage. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a lead-type active buzzer, aiming to solve the problems raised in the above background technology.

[0005] The utility model is implemented in this way. The utility model provides the following technical solution: a lead-type active buzzer comprises a shell, a buzzer piece is arranged inside the shell, a first circuit board is arranged outside the shell, and a second circuit board is arranged inside the shell and between the shell and the buzzer piece;

[0006] The buzzer sheet includes a substrate, a piezoelectric ceramic sheet and a bulb feedback electrode, a first step for supporting the piezoelectric ceramic sheet is provided inside the housing, and the buzzer sheet is bonded to the first step by glue;

[0007] A wire group is arranged on the piezoelectric ceramic sheet, and the wire group includes a first wire body, a second wire body and a third wire body.

[0008] Optionally, in a possible implementation manner, a first pair of connectors is provided at one end of the first wire body, a second pair of connectors is provided at one end of the second wire body, a third pair of connectors is provided at one end of the third wire body, a fourth pair of connectors is provided at the other end of the first pair of connectors, a fifth pair of connectors is provided at the other end of the second wire body, and a sixth pair of connectors is provided at the other end of the third wire body. The first pair of connectors is connected to the piezoelectric ceramic sheet by soldering, the second pair of connectors is connected to the feedback pole of the bulb by soldering, and the third pair of connectors is connected to the substrate by soldering. The first circuit board is provided with a first connection end, a second connection end, a third connection end, a fourth connection end and a fifth connection end, and the second circuit board is provided with a A second external wire connected to the outer shell, a first external wire connected to the fourth connection end is arranged on one side of the second external wire, a protective tube is sleeved on the outer sides of the first external wire and the second external wire, the fourth pair of joints is connected to the first connection end, the fifth pair of joints is connected to the second connection end, and the sixth pair of joints is connected to the third connection end, a second step installed on the outer shell is arranged on the outer side of the first step, a first mounting hole is opened on the second step, a second mounting hole is opened on the inner wall of the first mounting hole, a cover plate is arranged on the outer side of the outer shell, two protective edges are arranged on the cover plate, a dislocation opening is formed between the two protective edges, the protective edge is bonded and fixed to the second step by glue, and the dislocation opening is arranged on the outer side of the protective tube;

[0009] Technical effects and advantages of the utility model:

[0010] Through the corresponding coordination of various structures, the overall design is simple and the structure is reasonable. Under the premise of ensuring the pronunciation, the input voltage of the product is reduced;

[0011] By adjusting the design of each circuit board of the buzzer, the stability of the sound pressure is ensured;

[0012] In addition, the buzzer is fixed to the shell by a ceramic edge, which can effectively ensure the stability of its installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the products involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0014] Figure 1 It is the front view of the overall structure of the utility model.

[0015] Figure 2 This is a front view of the buzzer of the utility model installed in the shell.

[0016] Figure 3 It is a side view of the inner structure of the shell of the utility model.

[0017] Figure 4 It is a top view of the first step, the second step and the shell of the utility model.

[0018] Figure 5 This is a front view of the first circuit board of the utility model.

[0019] Figure 6 It is the front view of the cover plate of the utility model.

[0020] The accompanying drawings are marked as follows:

[0021] 1. housing; 11. first step; 12. second step; 13. first mounting hole; 14. second mounting hole;

[0022] 2. Buzzer chip; 21. Substrate; 22. Piezoelectric ceramic chip; 23. Light bulb feedback electrode;

[0023] 3. First circuit board; 31. First connection terminal; 32. Second connection terminal; 33. Third connection terminal; 34. Fourth connection terminal; 35. Fifth connection terminal;

[0024] 4. Second circuit board; 41. First external connection; 42. Second external connection;

[0025] 5. Protective tube;

[0026] 6. Line group; 61. First line body; 62. Second line body; 63. Third line body; 611. First pair of joints; 621. Second pair of joints; 631. Third pair of joints; 612. Fourth pair of joints; 622. Fifth pair of joints; 632. Sixth pair of joints;

[0027] 7. Cover plate; 71. Protective edge; 72. Dislocation opening; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] As attached Figure 1-6The lead-type active buzzer shown is used by corresponding coordination of various structures, and the specific structural arrangement of the components is as follows;

[0030] A lead-type active buzzer comprises a housing 1, a buzzer sheet 2 is arranged inside the housing 1, a first circuit board 3 is arranged outside the housing 1, and a second circuit board 4 is arranged inside the housing 1 and between the housing 1 and the buzzer sheet 2;

[0031] The buzzer plate 2 includes a substrate 21, a piezoelectric ceramic plate 22 and a bulb feedback electrode 23. A first step 11 for supporting the piezoelectric ceramic plate 22 is provided inside the housing 1. The buzzer plate 2 is bonded to the first step 11 by glue.

[0032] A wire group 6 is disposed on the piezoelectric ceramic sheet 22 , and the wire group 6 includes a first wire body 61 , a second wire body 62 and a third wire body 63 .

[0033] A first pair of connectors 611 is provided at one end of the first wire body 61, a second pair of connectors 621 is provided at one end of the second wire body 62, a third pair of connectors 631 is provided at one end of the third wire body 63, a fourth pair of connectors 612 is provided at the other end of the first pair of connectors 611, a fifth pair of connectors 622 is provided at the other end of the second wire body 62, and a sixth pair of connectors 632 is provided at the other end of the third wire body 63. The first pair of connectors 611 is connected to the piezoelectric ceramic sheet 22 by soldering, the second pair of connectors 621 is connected to the bulb feedback pole 23 by soldering, and the third pair of connectors 631 is connected to the substrate 21 by soldering. A first connection end 31, a second connection end 32, a third connection end 33, a fourth connection end 34 and a fifth connection end 35 are provided on the first circuit board 3, and a second external Wiring 42, a first external wiring 41 connected to the fourth connection end 34 is provided on one side of the second external wiring 42, and a protective tube 5 is sleeved on the outer sides of the first external wiring 41 and the second external wiring 42, the fourth pair of joints 612 is connected to the first connection end 31, the fifth pair of joints 622 is connected to the second connection end 32, and the sixth pair of joints 632 is connected to the third connection end 33, and a second step 12 installed on the outer side of the first step 11 is provided, and a first mounting hole 13 is opened on the second step 12, and a second mounting hole 14 is opened on the inner wall of the first mounting hole 13, and a cover plate 7 is provided on the outer side of the outer shell 1, and two protective edges 71 are provided on the cover plate 7, and an offset opening 72 is formed between the two protective edges 71, and the protective edge 71 is bonded and fixed to the second step 12 by glue, and the offset opening 72 is covered on the outer side of the protective tube 5.

[0034] When using the above structure, Figure 3 The buzzer plate 2 shown is composed of a substrate 21, a piezoelectric ceramic plate 22 in the substrate 21, and a bulb feedback electrode 23. The buzzer plate 2 is bonded to the first step 11 of the housing 1 by glue.

[0035] The first pair of joints 611 is connected to the piezoelectric ceramic sheet 22 by soldering, the second pair of joints 621 is connected to the feedback pole 23 of the bulb by soldering, the third pair of joints 631 is connected to the substrate 21 by soldering, the fourth pair of joints 612 is connected to the first connection end 31, the fifth pair of joints 622 is connected to the second connection end 32, and the sixth pair of joints 632 is connected to the third connection end 33. The bellows protection tube 5 is first sleeved on the first external wire 41 and the second external wire 42, the fourth connection end 34 is connected to the first external wire 41, and the fourth connection end 34 is connected to the first external wire 41. The second circuit board 4 with welded parts is first glued to the second step 12 of the housing 1 by glue, and is inserted through the first mounting hole 13 and the second mounting hole 14 of the housing 1 to avoid interference and improve convenience during installation.

[0036] Finally, the cover plate 7 is bonded together with the second step 12 of the outer shell 1 through the protective edge 71 and glue. When bonding the cover plate 7, it should be noted that the slot cover plate 7 should correspond to the second circuit board 4. The buzzer plate 2 will self-excite at a frequency after being energized, thereby generating elastic deformation, causing the air in the resonance cavity to vibrate and emit sound from the sound hole, thereby achieving the function of exciting sound with a smaller current.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lead-type active buzzer, comprising a housing (1), characterized in that: A buzzer (2) is arranged inside the shell (1), a first circuit board (3) is arranged outside the shell (1), and a second circuit board (4) is arranged inside the shell (1) and between the shell (1) and the buzzer (2); The buzzer plate (2) comprises a substrate (21), a piezoelectric ceramic plate (22) and a bulb feedback electrode (23); a first step (11) for supporting the piezoelectric ceramic plate (22) is provided inside the housing (1); and the buzzer plate (2) is bonded to the first step (11) by glue; A wire group (6) is arranged on the piezoelectric ceramic sheet (22), and the wire group (6) comprises a first wire body (61), a second wire body (62) and a third wire body (63).

2. The lead-type active buzzer according to claim 1, characterized in that: One end of the first wire body (61) is provided with a first pair of joints (611), one end of the second wire body (62) is provided with a second pair of joints (621), one end of the third wire body (63) is provided with a third pair of joints (631), the other end of the first pair of joints (611) is provided with a fourth pair of joints (612), the other end of the second wire body (62) is provided with a fifth pair of joints (622), and the other end of the third wire body (63) is provided with a sixth pair of joints (632).

3. The lead-type active buzzer according to claim 2, characterized in that: The first pair of joints (611) are connected to the piezoelectric ceramic sheet (22) by soldering, the second pair of joints (621) are connected to the bulb feedback pole (23) by soldering, and the third pair of joints (631) are connected to the substrate (21) by soldering.

4. The lead-type active buzzer according to claim 1, characterized in that: The first circuit board (3) is provided with a first connection end (31), a second connection end (32), a third connection end (33), a fourth connection end (34) and a fifth connection end (35).

5. The lead-type active buzzer according to claim 4, characterized in that: The second circuit board (4) is provided with a second external wire (42) connected to the fifth connection terminal (35); a first external wire (41) connected to the fourth connection terminal (34) is provided on one side of the second external wire (42); and protective tubes (5) are provided on the outer sides of the first external wire (41) and the second external wire (42).

6. The lead-type active buzzer according to claim 2, characterized in that: The fourth pair of connectors (612) is connected to the first connection end (31), the fifth pair of connectors (622) is connected to the second connection end (32), and the sixth pair of connectors (632) is connected to the third connection end (33).

7. The lead-type active buzzer according to claim 1, characterized in that: A second step (12) mounted on the housing (1) is arranged on the outer side of the first step (11), a first mounting hole (13) is provided on the second step (12), and a second mounting hole (14) is provided on the inner wall of the first mounting hole (13).

8. The lead-type active buzzer according to claim 7, characterized in that: A cover plate (7) is arranged on the outer side of the housing (1); two protective edges (71) are arranged on the cover plate (7); a dislocation opening (72) is formed between the two protective edges (71); the protective edges (71) are bonded and fixed to the second step (12) by glue; and a cover of the dislocation opening (72) is arranged on the outer side of the protective tube (5).

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