Leadless welding buzzer

Abstract

The utility model discloses a lead-free welding buzzer, which comprises a main body shell, a buzzing sheet and a Pin, the main body shell is provided with a concave cavity and an insertion cavity, the buzzing sheet is positioned in the concave cavity, an insertion part of the Pin is inserted into the insertion cavity and is provided with a protruding thorn, one end of the insertion part extends out of the insertion cavity to form a connecting part, and the other end of the insertion part extends out of the insertion cavity to form the connecting part. And the elastic claw part of the Pin extends to the position of the concave cavity and is pressed against the contact point of the buzzing piece. According to the utility model, the structural design is reasonable, the Pins are positioned in the insertion cavities through the cooperation of the insertion parts and the spikes, the assembly is tight, the structural stability is good, and the looseness is not easy; and meanwhile, the elastic claw part is tightly pressed on the contact point of the buzzing piece, so that the matching effect is good, the stability of electrical connection is ensured, the traditional wire welding procedure is omitted, the production process is simplified, the production efficiency is improved, the problems of wire breakage or sealing-off caused by poor welding are greatly reduced, and the reliability and the stability of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of buzzers, in particular to a leadless soldering buzzer. Background Art

[0002] The sound - generating component in a piezoelectric buzzer is a buzzer sheet that generates deformation when electrified. In existing piezoelectric buzzers, wires with a small diameter are usually used inside to connect the electrodes of the buzzer sheet to an external power source through soldering for power - on operation. For example, the utility model with the publication number "CN215527229U" and the name "A patch - type low - frequency buzzer" discloses a patch - type low - frequency buzzer, which includes a self - excited buzzer sheet. The self - excited buzzer sheet is composed of a buzzer sheet substrate and a piezoelectric ceramic sheet located in the middle of the buzzer sheet substrate; the self - excited buzzer sheet is installed inside the bottom shell. The buzzer sheet substrate is adhered to the inner wall of the bottom of the bottom shell through glue. A contact point A is arranged on the piezoelectric ceramic sheet, and a contact point B is arranged on the buzzer sheet substrate. A wire B is arranged between the soldering station two and the contact point B through soldering, and a wire A is arranged between the soldering station four and the contact point A through soldering; through soldering, one end of the wire B is connected to the soldering station two, and the other end is connected to the contact point B, and one end of the wire A is connected to the soldering station four, and the other end is connected to the contact point A; although it can achieve the purpose of sounding, during the long - time vibration of the buzzer sheet, for the wires with a small diameter, whether it is the wire itself or the soldering point, it is easy to produce metal fatigue, resulting in bad problems such as wire breakage or desoldering. Moreover, the louder the sound, the greater the vibration of the buzzer sheet, and the more likely the above - mentioned bad problems will occur. And because the wires are soft and not easy to place and position, the soldering difficulty is large and the soldering work efficiency is low. Content of the Utility Model

[0003] Aiming at the above - mentioned deficiencies in the prior art, the purpose of the utility model is to provide a leadless soldering buzzer with reasonable structural design, good working stability, long service life and convenient assembly and production.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] A leadless soldering buzzer includes a main body shell, a buzzer sheet and Pin pins. A concave cavity for placing the buzzer sheet is provided on the main body shell, and an insertion cavity is provided at a side position corresponding to the concave cavity. The Pin pin includes an insertion part and a spring claw part. The insertion part is inserted into the insertion cavity and is provided with barbs. One end of the insertion part extends out of the insertion cavity to form a connection part. One end of the spring claw part is connected to the insertion part, and the other end extends to the position of the concave cavity and presses against the contact point of the buzzer sheet.

[0006] As a preferred scheme of the utility model, the barbs are located on both sides of the insertion part, and the installation effect is good and it is not easy to loosen.

[0007] As a preferred embodiment of the present utility model, the end of the insertion cavity away from the connection portion is widened to form a step, and barbs are provided on the insertion portion to snap onto the step. The step design of the insertion cavity cooperates with the barbs on the Pin foot to form a double locking mechanism, effectively preventing the Pin foot from accidentally falling off during vibration and enhancing the stability of the overall structure.

[0008] As a preferred embodiment of the present utility model, the insertion portion is provided with a rib extending along its insertion direction, and the rib presses against the inner wall of the concave cavity. This not only enhances the structural strength of the insertion portion but also improves the tightness of the fit.

[0009] As a preferred embodiment of the present utility model, the connection portion is provided with an elastic hook to improve the cooperation effect with the connection socket.

[0010] As a preferred embodiment of the present utility model, the other end of the elastic claw portion is bent 130 - 140 degrees towards the buzzer sheet direction. This ensures good contact pressure, and even when the buzzer sheet vibrates, it can better fit the contact points of the buzzer sheet to ensure the stability and reliability of the electrical connection.

[0011] As a preferred embodiment of the present utility model, the bottom surface of the concave cavity is recessed downward to form a sound cavity, enabling the sound to resonate and reflect in the sound cavity, thereby enhancing the volume of the sound. An outlet hole is provided at the center of the sound cavity, allowing the sound emitted by the buzzer sheet to be smoothly transmitted to the outside, improving the clarity and volume of the sound.

[0012] As a preferred embodiment of the present utility model, the insertion portion, the elastic claw portion, and the connection portion are integrally connected structures, formed by integrally blanking and bending a metal sheet, reducing the failure rate caused by poor connection.

[0013] As a preferred embodiment of the present utility model, the number of insertion cavities is three, which are arranged in a central symmetry at the peripheral position of the main body housing. This enables the contact pressure of the three Pin feet to be evenly distributed on the buzzer sheet, enhancing the cooperation stability.

[0014] The beneficial effects of the present utility model are as follows: The structural design of the present utility model is reasonable. The Pin foot is positioned in the insertion cavity through the cooperation of the insertion portion and the spikes, with a tight assembly, good structural stability, and not easy to loosen. At the same time, the elastic claw portion tightly presses on the contact points of the buzzer sheet, with a good cooperation effect, ensuring the stability of the electrical connection, eliminating the traditional process of welding wires. This not only simplifies the production process, improves production efficiency, but also greatly reduces the problems of wire breakage or de - soldering caused by poor welding, improving the reliability and stability of the product.

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0017] Figure 2 It is an exploded structure schematic diagram of the present utility model.

[0018] Figure 3 It is a structure schematic diagram of the Pin pin in the present utility model.

[0019] Figure 4 It is a structure schematic diagram of the main body housing in the present utility model. Specific embodiments

[0020] See Figures 1 to 4 , a leadless soldering buzzer provided in this embodiment includes a main body housing 1, a buzzer sheet 2 and a Pin pin 3. A concave cavity 11 for placing the buzzer sheet 2 is provided on the main body housing 1. The bottom surface of the concave cavity 11 is recessed downward to form a sound cavity 12, so that the sound emitted by the buzzer sheet 2 resonates and reflects in the sound cavity 12, thereby enhancing the volume of the sound. An outlet hole 13 is provided at the center position of the sound cavity 12, so that the sound emitted by the buzzer sheet 2 can be smoothly transmitted to the outside, improving the clarity and volume of the sound.

[0021] An insertion cavity 14 is provided at a side position corresponding to the concave cavity 11. The Pin pin 3 includes an insertion portion 31 and a spring claw portion 32. The insertion portion 31 is inserted into the insertion cavity 14 and is provided with barbs 33. The barbs 33 are preferably located on both sides of the insertion portion 31, with good installation effect and not easy to loosen.

[0022] One end of the insertion portion 31 extends out of the insertion cavity 14 to form a connection portion 34, and an elastic hook 35 is provided on the connection portion 34 to improve the matching effect with the connection socket.

[0023] One end of the spring claw portion 32 is connected to the insertion portion 31, and the other end extends to the position of the concave cavity 11 and presses against the contact point of the buzzer sheet 2. Preferably, the other end of the spring claw portion 32 is bent 130-140 degrees towards the buzzer sheet 2. To ensure good contact pressure, even when the buzzer sheet 2 vibrates, it can better fit the contact point of the buzzer sheet 2, ensuring the stability and reliability of the electrical connection.

[0024] Preferably, the end of the insertion cavity 14 away from the connection portion 34 is widened to form a step 15, and a barb 36 that buckles on the step 15 is provided on the insertion portion 31. The step 15 design of the insertion cavity 14 cooperates with the barb 36 on the Pin pin 3 to form a double locking mechanism, effectively preventing the Pin pin 3 from accidentally falling off during vibration and enhancing the stability of the overall structure.

[0025] A rib 37 extending along the insertion direction is provided on the insertion portion 31, and the rib 37 presses against the inner wall of the concave cavity 11. This not only enhances the structural strength of the insertion portion 31 but also improves the tightness of the fit.

[0026] Preferably, the insertion portion 31, the elastic claw portion 32, and the connecting portion 34 are integrally connected structures, which are formed by integrally blanking and bending a metal sheet, reducing the failure rate caused by poor connection. The number of the insertion cavities 14 is three, which are arranged symmetrically about the center at the peripheral position of the main body housing 1.

[0027] During assembly, the buzzer sheet 2 is placed in the concave cavity 11. The three Pin feet 3 are respectively positioned in the insertion cavities 14 through the cooperation of the insertion portions 31 and the spikes 33 thereon, so that the elastic claw portions 32 of the three Pin feet 3 are correspondingly pressed against the buzzer sheet 2. While fixing the buzzer sheet 2, it is also in electrical contact with the contact points on the buzzer sheet 2. The cooperation effect is good, ensuring the stability of the electrical connection, eliminating the traditional process of welding wires, simplifying the production process, improving the production efficiency, and reducing the problems of wire breakage or desoldering caused by poor welding, thus ensuring the product quality.

[0028] According to the disclosure and teachings of the above specification, those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments. Any obvious improvements, substitutions, or variations made by those skilled in the art based on the present invention fall within the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention. Other buzzers obtained by adopting the same or similar structures are within the protection scope of the present invention.

Claims

1. A leadless soldered buzzer, which comprises a main body housing and a buzzer sheet, and is characterized in that: It also includes a Pin terminal. A concave cavity for placing the buzzer sheet is provided on the main body housing. An insertion cavity is provided at a side position corresponding to the concave cavity. The Pin terminal includes an insertion portion and a spring claw portion. The insertion portion is inserted into the insertion cavity and is provided with barbs. One end of the insertion portion extends out of the insertion cavity to form a connection portion. One end of the spring claw portion is connected to the insertion portion, and the other end extends to the position of the concave cavity and presses against the contact point of the buzzer sheet.

2. The leadless soldered buzzer according to claim 1, wherein The barbs are located on both sides of the insertion portion.

3. The leadless soldered buzzer according to claim 1, characterized in that, One end of the insertion cavity away from the connection portion is widened to form a step, and the insertion portion is provided with a barb that latches onto the step.

4. The leadless soldered buzzer according to claim 1, wherein The insertion portion is provided with a rib extending along its insertion direction, and the rib presses against the inner wall of the concave cavity.

5. The leadless soldered buzzer according to claim 1, wherein The connection portion is provided with an elastic hook.

6. The leadless soldered buzzer according to claim 1, characterized in that, The other end of the spring claw portion is bent 130 to 140 degrees toward the buzzer sheet.

7. The leadless soldered buzzer according to claim 1, characterized in that, The bottom surface of the concave cavity is recessed downward to form a sound cavity, and a sound outlet hole is provided at the center position of the sound cavity.

8. The leadless soldering buzzer according to claim 1, characterized in that, The insertion portion, the spring claw portion, and the connection portion are integrally connected structures.

9. The leadless soldering buzzer according to any one of claims 1-8, characterized in that, The number of the insertion cavities is three, and they are arranged in a central symmetry at the peripheral position of the main body housing.

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