End shell integrated buzzer shell

Abstract

The utility model relates to a buzzer shell with an integrated end shell, and belongs to the technical field of buzzers, the buzzer shell comprises a cover shell and a bottom cover, a containing cavity used for containing a buzzing piece is formed between the cover shell and the bottom cover, the buzzer shell further comprises an end shell, the end shell is integrally formed on one side of the cover shell, the end shell is provided with an insertion hole for a terminal to be inserted in, and the end shell is provided with a through hole. And the insertion hole is communicated with the accommodating cavity. The end shell and the cover shell are integrally formed, the terminal is directly inserted into the end shell, a lead does not need to be additionally arranged, and the terminal is directly connected with the buzzing piece in the containing cavity. Lead wires are omitted, production procedures are reduced, and production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of buzzer, in particular to a kind of end shell integrated buzzer shell. BACKGROUND

[0002] Buzzer is the sound body using piezoelectric ceramic sheet as the electric sound transducer of buzzer, is the core component of buzzer, piezoelectric buzzer is a kind of sound body with piezoelectric ceramic as electric sound transducer, in recent years, it is widely used in alarm and automobile industry.This kind of product is generally transducer component with piezoelectric ceramic sheet pasted on metal sheet.Piezoelectric buzzer includes shell and piezoelectric buzzer sheet arranged in the shell, piezoelectric buzzer sheet is composed of metal substrate and piezoelectric ceramic glued on metal substrate, the upper and lower surfaces of piezoelectric ceramic are respectively coated with silver layer electrode, piezoelectric buzzer sheet is welded with two metal leads respectively connected with metal substrate and piezoelectric ceramic silver layer.

[0003] Chinese patent with publication number CN212461133U discloses a piezoelectric buzzer, including cover plate, cover and two leads, the cover plate is provided with buzzer sheet, the end side wall of cover is symmetrically provided with two open slots, two leads are respectively connected with buzzer sheet on cover plate through two open slots on cover.

[0004] For the above technical scheme, the inventor considers that in the prior art, the end of lead away from buzzer sheet is provided with terminal for connecting buzzer with external PCB, in addition to material cost of lead itself, lead needs to be operated after peeling and boring, and then is crimped to terminal, so the process is relatively complicated.In addition, in order to ensure waterproof and dustproof performance inside buzzer, open slot for leading out lead on cover needs to be sealed by waterproof plug or waterproof glue, so the production cost is relatively high. UTILITY MODEL CONTENTS

[0005] In order to reduce production cost and reduce production process, the present application provides a kind of end shell integrated buzzer shell.

[0006] The end shell integrated buzzer shell provided by the present application adopts the following technical scheme:

[0007] An end shell integrated buzzer shell includes cover and bottom cover, the cover and bottom cover are formed with cavity for accommodating buzzer sheet, and further includes end shell, the end shell is integrally formed on one side of cover, the end shell is provided with insertion hole for terminal insertion, and the insertion hole is communicated with cavity.

[0008] By adopting the above technical scheme, the end shell and cover are integrally formed, the terminal is directly inserted in the end shell, without additional lead, and the terminal is directly connected with buzzer sheet in cavity.The present application cancels lead, reduces production process, and is beneficial to reduce production cost.

[0009] Optionally, the cover is provided with a sound outlet hole, the sound outlet hole is a horn type hole, and a small-diameter end of the sound outlet hole is arranged close to the cavity.

[0010] By adopting the above technical scheme, the sound outlet hole is convenient for sound to be transmitted from the inside of the cavity, and the sound outlet hole is arranged in a horn type, which has the effects of amplifying sound and facilitating the airflow from the inside of the cover to the outside, thereby facilitating the heat in the cavity to be taken out and improving the heat dissipation effect.

[0011] Optionally, the small-diameter end of the sound outlet hole is provided with a waterproof and breathable film.

[0012] By adopting the above technical scheme, the waterproof and breathable film has the characteristics of being breathable and waterproof, can be breathable and sound-transmitting, and is beneficial to reducing the possibility of dust and water vapor entering the cavity through the sound outlet hole, thereby ensuring the effects of sound generation, heat dissipation, dust prevention and waterproof. In addition, the waterproof and breathable film arranged at the small-diameter end of the sound outlet hole is beneficial to reducing the coverage area of the waterproof and breathable film and reducing the production cost.

[0013] Optionally, a waterproof adhesive layer is arranged on the side of the waterproof and breathable film close to the sound outlet hole, the waterproof adhesive layer is arranged in an annular shape, and the inner diameter of the annular waterproof adhesive layer is greater than the diameter of the small-diameter end of the sound outlet hole.

[0014] By adopting the above technical scheme, the waterproof and breathable film is fixed to the inside of the cover through the waterproof adhesive layer, the waterproof adhesive layer is arranged in an annular shape, which can avoid the gap between the waterproof and breathable film and the inside of the cover, and ensure the effects of waterproof and dust prevention. When the waterproof and breathable film is pasted, the inner diameter of the annular waterproof adhesive layer is greater than the diameter of the small-diameter end of the sound outlet hole, which can improve the alignment fault tolerance of the waterproof and breathable film and the sound outlet hole, and avoid the waterproof adhesive layer from shielding the sound outlet hole when the waterproof and breathable film is deviated during adhesion, thereby affecting the sound generation effect.

[0015] Optionally, the cavity wall of the cavity is provided with a stepped groove, the bottom cover is arranged in the stepped groove, and the bottom cover is adhesively fixed with the groove wall of the stepped groove.

[0016] By adopting the above technical scheme, the bottom cover is firmly connected with the cover, and the sealing and protection effects are ensured through the bottom cover.

[0017] Optionally, a plurality of anti-twist grooves are arranged on the groove wall of the stepped groove opposite to the bottom cover, and the bottom cover is provided with anti-twist protrusions matched with the anti-twist grooves.

[0018] By adopting the above technical scheme, the anti-twist grooves and the anti-twist protrusions are correspondingly arranged, which avoids the relative rotation between the bottom cover and the stepped groove, reduces the possibility that the adhesive surface of the bottom cover and the stepped groove is subjected to the torque during use, and thereby reduces the possibility of the bottom cover falling off. In addition, through the arrangement of the anti-twist grooves and the anti-twist protrusions, the adhesive area of the bottom cover and the cover can be increased, and the adhesive effect of the bottom cover and the cover is ensured.

[0019] Optionally, the outer lower end of the cover is integrally formed with at least two side ears, and mounting holes are arranged on the side ears.

[0020] By adopting the above technical scheme, the installation of the buzzer shell is facilitated.

[0021] To sum up, the present application has at least one of the following beneficial technical effects:

[0022] 1. In the present application, the end shell and the cover are integrally formed, and when the buzzer sheet is packaged, the terminal is directly inserted into the end shell, without the need for additional lead lines, and the terminal is directly connected to the buzzer sheet in the cavity. The present application cancels the lead lines, reduces the production process, and is conducive to reducing the production cost.

[0023] 2. By arranging the sound outlet hole, the sound outlet hole facilitates the transmission of sound from the inside of the cavity, and the sound outlet hole is arranged in the shape of a horn hole, which has the effects of amplifying sound and facilitating the airflow from the inside of the cover to the outside, thereby facilitating the removal of heat from the cavity and improving the heat dissipation effect.

[0024] 3. By arranging the waterproof and breathable film, the sound outlet hole facilitates the transmission of sound from the inside of the cavity, and the sound outlet hole is arranged in the shape of a horn hole, which has the effects of amplifying sound and facilitating the airflow from the inside of the cover to the outside, thereby facilitating the removal of heat from the cavity and improving the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of an end shell integrated buzzer shell according to an embodiment of the present application.

[0026] Figure 2 is a schematic diagram of the internal structure of the cover according to an embodiment of the present application.

[0027] Figure 3 is an exploded view of the cooperation between the bottom cover and the cover according to an embodiment of the present application.

[0028] Figure 4 is a sectional view of the position relationship between the sound outlet hole and the waterproof and breathable film according to an embodiment of the present application.

[0029] Figure 5 is a schematic diagram of the structure of the waterproof and breathable film according to an embodiment of the present application.

[0030] Reference signs: 1, cover; 11, cavity; 111, step groove; 1111, anti-twist groove; 12, side ear; 121, mounting hole; 13, sound outlet hole; 2, bottom cover; 21, anti-twist protrusion; 3, end shell; 31, insertion hole; 4, waterproof and breathable film; 41, waterproof adhesive layer. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1-5 , further details of this application are given.

[0032] Example:

[0033] The embodiment of the present application discloses a buzzer housing with an integrated end shell. Figure 1 A buzzer housing with an integrated end shell includes a cover shell 1, a bottom cover 2 and an end shell 3. A cavity 11 for accommodating a buzzer piece is formed between the cover shell 1 and the bottom cover 2, and the end shell 3 is integrally formed on one side of the cover shell 1. A socket 31 for inserting a terminal is provided on the end shell 3, and the socket 31 is connected to the cavity 11. To facilitate the installation of the buzzer housing, at least two side ears 12 are integrally formed on the lower end of the outer side of the cover shell 1, and a mounting hole 121 is provided on the side ear 12. In this embodiment, the end shell 3 and the cover shell 1 are integrally injection molded. In this way, the end shell 3 and the cover shell 1 are integrally formed, and the terminal is directly inserted into the end shell 3 without the need for additional leads. The terminal is directly connected to the buzzer piece in the cavity 11. The present application eliminates the leads, reduces the production process, and helps to reduce production costs.

[0034] Reference Figures 3-4 The housing 1 is provided with a sound outlet 13, which is a trumpet-shaped hole, with the smaller end of the hole 13 positioned near the cavity 11. In this embodiment, multiple sound outlets 13 are provided, all located at the top of the housing 1. The sound outlet 13 facilitates the transmission of sound from the interior of the cavity 11. The trumpet-shaped arrangement of the sound outlet 13 not only amplifies sound but also facilitates airflow from the inside of the housing 1 to the outside, thereby dissipating heat from the cavity 11 and improving heat dissipation.

[0035] Reference Figure 4 The smaller diameter end of the sound outlet 13 is provided with a waterproof breathable membrane 4. This membrane is breathable but impermeable, allowing air and sound to pass through while reducing the possibility of dust and moisture entering the cavity 11 through the sound outlet 13, thereby ensuring sound transmission, heat dissipation, dustproofing, and waterproofing. Furthermore, placing the membrane 4 at the smaller diameter end of the sound outlet 13 helps reduce the membrane's footprint, lowering production costs.

[0036] Reference Figures 4-5The waterproof and breathable film 4 is fixed to the inner side of the shell 1 through the waterproof adhesive layer 41, the waterproof adhesive layer 41 is annularly arranged, and the annular inner diameter of the waterproof adhesive layer 41 is greater than the small-diameter end diameter of the sound hole 13. In this way, the waterproof and breathable film 4 can avoid the gap between the waterproof and breathable film 4 and the inner side of the shell 1, and ensure the waterproof and dustproof effect. When the waterproof and breathable film 4 is pasted, the annular inner diameter of the waterproof adhesive layer 41 is greater than the small-diameter end diameter of the sound hole 13, which can improve the alignment fault tolerance of the waterproof and breathable film 4 and the sound hole 13, and avoid the waterproof adhesive layer 41 blocking the sound hole 13 when the waterproof and breathable film 4 is deviated from the adhesive, thereby affecting the sound effect.

[0037] Referring to Figures 2-3 To ensure that the bottom cover 2 is connected to the shell 1 firmly and ensure the sealing and protection effect of the buzzer shell, the cavity wall of the cavity 11 is provided with a stepped groove 111, the bottom cover 2 is arranged in the stepped groove 111, and the bottom cover 2 is adhesively fixed to the groove wall of the stepped groove 111. A plurality of anti-twist grooves 1111 are arranged on the groove wall of the stepped groove 111 opposite to the bottom cover 2, and the bottom cover 2 is integrally formed with an anti-twist protrusion 21 matched with the anti-twist grooves 1111. In this way, after the anti-twist grooves 1111 and the anti-twist protrusion 21 are correspondingly arranged, the relative rotation between the bottom cover 2 and the stepped groove 111 is avoided, and the possibility that the adhesive surface of the bottom cover 2 and the stepped groove 111 is subjected to torque in use is reduced, thereby reducing the possibility of the bottom cover 2 falling off. In addition, through the arrangement of the anti-twist grooves 1111 and the anti-twist protrusion 21, the adhesive area of the bottom cover 2 and the shell 1 can be increased, and the adhesive effect of the bottom cover 2 and the shell 1 can be ensured.

[0038] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A buzzer housing with an integrated end cap, comprising a cover (1) and a bottom cover (2), a cavity (11) for accommodating a buzzer sheet being formed between the cover (1) and the bottom cover (2), characterized in that: The end shell (3) is integrally formed on one side of the cover shell (1), and the end shell (3) is provided with a terminal insertion hole (31) in communication with the accommodating cavity (11).

2. The integrated end cap buzzer housing of claim 1, wherein: The cover shell (1) is provided with a sound outlet hole (13), the sound outlet hole (13) is a horn type hole, and the small diameter end of the sound outlet hole (13) is arranged close to the accommodating cavity (11).

3. A housing for a buzzer of the type defined in claim 2, characterised in that: The small diameter end of the sound outlet hole (13) is provided with a waterproof and breathable film (4).

4. The integrated end cap buzzer housing of claim 3, wherein: The waterproof and breathable film (4) is provided with a waterproof adhesive layer (41) on the side close to the sound outlet hole (13), the waterproof adhesive layer (41) is arranged in an annular shape, and the inner diameter of the annular waterproof adhesive layer (41) is greater than the diameter of the small diameter end of the sound outlet hole (13).

5. The integrated end cap buzzer housing of claim 1, wherein: The cavity wall bottom end of the accommodating cavity (11) is provided with a stepped groove (111), the bottom cover (2) is arranged in the stepped groove (111), and the bottom cover (2) is adhesively fixed with the groove wall of the stepped groove (111).

6. A housing for a buzzer of the type defined in claim 5, characterised in that: The side groove wall of the stepped groove (111) opposite to the bottom cover (2) is provided with a plurality of anti-twist grooves (1111), and the bottom cover (2) is provided with an anti-twist protrusion (21) matched with the anti-twist grooves (1111).

7. The integrated end cap buzzer housing of claim 1, wherein: The outer lower end of the cover shell (1) is integrally formed with at least two side ears (12), and the side ears (12) are provided with mounting holes (121).

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