CN219180189U

CN219180189U - Paster buzzer composition structure

Info

Publication number: CN219180189U
Application number: CN202223413581.0U
Authority: CN
Inventors: 汤龙; 古湘龙; 侯华金; 杨通海; 张勇; 李先峰
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Changsha HVAC Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Changsha HVAC Equipment Co Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-13
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a patch buzzer composition structure, which comprises a base, a buzzer shell and a buzzer piece, wherein the base is an epoxy glass cloth laminated board, a first pole pin is formed by electroplating a conductive medium coating between a top layer and a bottom layer on one side of the peripheral edge of the base, a second pole pin is formed by electroplating a conductive medium coating between a top layer and a bottom layer on the other side of the peripheral edge of the base, the first pole pin and the second pole pin are connected with the buzzer piece through enameled wires, one ends of the first pole pin and the second pole pin, which are far away from the center of the base, are connected with the buzzer shell in an embedded manner, and a gap is reserved between the peripheral edge of the base and the buzzer shell. The utility model adopts the epoxy glass cloth laminated board and electroplates the conductive medium, is superior to the heat resistance, the welding disc precision and the strength of the common plastic shell base, is not easy to deform, is stable in connection, light, thin, strong in processability, small in processing difficulty and high in yield, adopts the enameled wire lead connection, and greatly improves the heat resistance and the stability compared with the conventional metal limit mode.

Description

Paster buzzer composition structure

Technical Field

The utility model relates to the technical field of electronic appliances, in particular to a patch buzzer composition structure.

Background

Along with the lightweight development of electronic manufacturing, the electronic component is changed from plug-in components to mounting technology and is industry trend, and piezoelectric buzzers are used as the common devices of response of operation response as air conditioner drive-by-wire, and the mounting mainly faces the problems of functional stability and heat resistance, and many buzzers in the form of transfer patches face two problems after production welding, and firstly the materials are heated and melt, and secondly, because the buzzers in the form of the transfer patches are lighter and thinner, the contact conduction connection mode adopting the plug-in components in the limited cavity space often faces the conditions of unstable conduction, abnormal sounding and the like.

The patent number CN201821451376.4 proposes a pin composition structure of a patch buzzer, and the connection between a bonding pad pin and a buzzer is realized by utilizing an elastic structure, so that a welding link between the buzzer and a bonding pad base in the device manufacturing process is omitted, and the influence of the heated environment of the device is improved in a welding link reduction manner. But buzzer is carrying out SMT and is pasting the heat capacity of dress reflow soldering in-process, directly is conducted to internal connection metal through the pad, and the plastic casing, base, the inner structure that contact with metal often appear melting condition because of being heated this moment to elastic structure displacement deformation can appear, and process stability in use exists not enoughly.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a patch buzzer composition structure, which starts from the conduction mode of a base material, a bonding pad and a buzzer, so as to improve the heat resistance of the material, strengthen the heat resistance of a device, strengthen the welding resistance, improve the stability of the device, meet the light weight design of a patch, solve the problems of forming a patch pin, considering heat resistance factors, and ensuring the sound production performance while considering the connection stability.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a paster buzzer composition structure, includes base, buzzer casing and buzzer, the base is epoxy glass cloth laminated board, it forms first utmost point pin to electroplate between top layer and the bottom of peripheral edge department one side of base, electroplate between top layer and the bottom of peripheral edge department opposite side of base has conductive medium cladding to form the second utmost point pin, first utmost point pin and second utmost point pin all through the enameled wire with the buzzer is connected, first utmost point pin with the second utmost point pin is kept away from the one end at base center all with the buzzer casing is inlayed and is connected, the peripheral edge of base with leave the clearance between the buzzer casing.

As a further improvement of the utility model: the first electrode pin and the second electrode pin are copper media.

As a further improvement of the utility model: the first pole pin and the second pole pin have the same structure.

As a further improvement of the utility model: the first pole pin comprises a first conduction region, a second conduction region and an extension region, the first conduction region is arranged on the top layer of the base, the second conduction region is arranged on the bottom layer of the base, the extension region is connected between the first conduction region and the second conduction region, and the extension region is embedded on the buzzer shell.

As a further improvement of the utility model: and a limiting opening is formed in the position, opposite to the extending area, of the buzzer shell, and the extending area is embedded in the limiting opening.

As a further improvement of the utility model: the diameter of the base is smaller than that of the buzzer shell.

As a further improvement of the utility model: the extension region extends out of the peripheral edge of the base, and the thickness of the extension region is greater than the thickness of the base.

As a further improvement of the utility model: and the first electrode pin and the second electrode pin are plated with a gold medium layer after copper medium is electroplated.

As a further improvement of the utility model: and a bonding pad area is arranged on the top layer of the base close to the first conduction area, the bonding pad area is electrically conducted with the first conduction area, and the bonding pad area is connected with the buzzer through an enameled wire.

As a further improvement of the utility model: the buzzer shell is a plastic shell.

Compared with the prior art, the utility model has the beneficial effects that:

the base of the buzzer shell adopts the epoxy glass cloth laminated board, and the upper and lower electroplating cladding conductive medium is used for connection and conduction, so that the buzzer shell is superior to the heat resistance, the bonding pad precision and the strength of a common plastic shell base, is not easy to deform, stable in connection, light and thin, strong in workability, small in processing difficulty and high in yield, and is connected by adopting an enameled wire lead wire, so that the heat resistance and the stability are greatly improved compared with a conventional metal limiting mode.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the present utility model.

Reference numerals: 1. the base, 2, buzzer shell, 21, spacing mouth, 3, the piece of buzzing, 4, first pole pin, 41, first conduction region, 42, second conduction region, 43, extension region, 5, second pole pin, 6, pad region.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to solve the technical problems in the prior art, the present utility model will be further described with reference to the accompanying drawings and examples:

as shown in fig. 1-2, the utility model discloses a patch buzzer composition structure, which comprises a base 1, a buzzer shell 2 and a buzzer piece 3, wherein the base 1 is an epoxy glass cloth laminated board, a first pole pin 4 is formed by electroplating a conductive medium coating between a top layer and a bottom layer on one side of the peripheral edge of the base 1, a second pole pin 5 is formed by electroplating a conductive medium coating between a top layer and a bottom layer on the other side of the peripheral edge of the base 1, the first pole pin 4 and the second pole pin 5 are connected with the buzzer piece 3 through enameled wires, one ends, far away from the center of the base 1, of the first pole pin 4 and the second pole pin 5 are connected with the buzzer shell 2 in an inlaid manner, and a gap is reserved between the peripheral edge of the base 1 and the buzzer shell 2.

Preferably, the first pole pin 4 and the second pole pin 5 are copper media. The first pole pin 4 is connected with the ceramic plate in the center of the buzzer 3 through an enameled wire, and the second pole pin 5 is connected with the edge of the metal substrate of the buzzer 3 through an enameled wire.

More preferably, the first electrode pin 4 and the second electrode pin 5 are plated with a gold dielectric layer after being plated with copper dielectric.

Starting from the material of the bottom shell (base 1) of the buzzer, optimization is performed from the design of the bottom shell and the connection of the middle layer, and the device is light as far as possible under the condition of ensuring the heat resistance and the conduction stability of the material of the buzzer. According to the utility model, the base 1 of the buzzer shell 2 is made of FR-4 material (epoxy glass cloth laminated board), the thickness is 0.4mm, the upper and lower copper-clad modes are connected and conducted, the copper-clad mode tends to gold-plating treatment on the device base 1, the device base is used for the top layer and bottom layer bonding pads and circuits of the base 1, the superior conducting performance is ensured, and the connection stability is ensured by adopting enameled wires for welding connection between the buzzer buzzing piece 3 and the two-pole pins of the base 1.

More preferably, the diameter of the base 1 is smaller than the diameter of the buzzer housing 2.

Preferably, the first pole pin 4 and the second pole pin 5 have the same structure.

More preferably, the first electrode lead 4 includes a first conductive region 41, a second conductive region 42, and an extension region 43, the first conductive region 41 is disposed on a top layer of the base 1, the second conductive region 42 is disposed on a bottom layer of the base 1, the extension region 43 is connected between the first conductive region 41 and the second conductive region 42, and the extension region 43 is embedded in the buzzer housing 2.

Preferably, the extension area 43 extends out of the peripheral edge of the base 1, and the thickness of the extension area 43 is greater than the thickness of the base 1.

More preferably, the buzzer housing 2 is provided with a limiting opening 21 at a position opposite to the extending area 43, and the extending area 43 is embedded in the limiting opening 21.

That is, the size of the base 1 is smaller than the size of the plastic casing of the buzzer, copper is coated on the upper and lower sides of the base 1 to extend out of the base 11mm, the extending part is also subjected to electroplating treatment (the thickness is more than 0.4 mm), the position of the buzzer casing 2 corresponding to the copper plating extending position of the base 1 is left at about 0.4mm, the strength of the end is ensured, the end position and the whole base 1 are embedded into the buzzer casing 2 at the same time, the whole buzzer is thinner as much as possible, and the whole structure is more stable.

Preferably, the first electrode pin 4 and the second electrode pin 5 are plated with a gold dielectric layer after copper dielectric is electroplated.

Preferably, a pad area 6 is disposed on the top layer of the base 1 near the first conducting area 41, the pad area 6 is electrically connected with the first conducting area 41, and the pad area 6 is connected with the buzzer 3 through an enameled wire.

Copper and gold plating are covered on both sides of the base 1, a bottom layer reserved bonding pad of the base 1 meets the surface mounting requirement, a top layer reserved bonding pad of the base 1 is used for wire bonding, and the top layer bonding pad is used for conducting pins of the buzzer 3 and the two poles of the base material. The bottom layer and the top layer of the base 1 are respectively extended by copper (the extension size is about 1 mm) and are used for being matched with the base 1 to be embedded into a plastic shell, meanwhile, the strength of the end head is enhanced, and the leading-out end can facilitate the performance test of devices in the on-line or failure analysis process.

Preferably, the buzzer housing 2 is a plastic housing.

It should be noted that the material of the base 1 of the utility model adopts FR-4 material (epoxy glass cloth laminated board), which ensures heat resistance, at least can meet the high temperature of more than 2 times of reflow soldering, the thickness of the base material is at least 0.4mm, the integral strength is ensured to be convenient for subsequent soldering, and copper plating areas and other non-copper plating areas which do not involve soldering operation are used for solder resist, solder resist ink treatment, so as to avoid interference short circuit.

The copper-clad extensions (the extension size is about 1mm, the overlength is not suitable, and the interference area of a device is increased) are respectively extended on the bottom and the top layers of the base 1, and are used for being matched with the base 1 to be embedded into a plastic shell, and meanwhile, the strength of the end head is enhanced. The copper plating area and the extension part are subjected to gold plating treatment, so that the conductivity is enhanced.

The top layer of the base 1 is connected with the buzzer 3 by adopting enameled wires, the material is polyester imine E180, the heat resistance of the material is required to be considered, the actual production can involve double-sided mounting and THT technology, and the enameled wires are easy to paint off after being heated for many times to cause the problem of internal short circuit.

The buzzer 3 and the welding part of the base 1 and the enameled wire are required to be subjected to glue dispensing treatment, so that the stable strength of the lead is enhanced. On the basis that the bonding pads are led out and embedded into the buzzer plastic shell, the base 1 is embedded into the buzzer plastic shell, the buzzer plastic shell is required to limit the base 1 in size so as to fix the base 1, the stress condition of the bonding pads is reduced, and meanwhile, the buzzer plastic shell and the base 1 are required to be glued and fixed in the assembly forming stage.

The width dimension of the pad area 6 of the top layer of the base 1 is 1.2mm, the length dimension is 4.0mm, and the diameter dimension of the bottom layer of the buzzer housing 2 is larger than the diameter dimension of the base 1 by 0.2mm.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a paster buzzer composition structure, includes base, buzzer casing and buzzer, its characterized in that, the base is epoxy glass cloth laminated board, it forms first utmost point pin to electroplate between top layer and the bottom of peripheral edge department one side of base, electroplate between top layer and the bottom of peripheral edge department opposite side of base has the conductive medium cladding to form the second utmost point pin, first utmost point pin and second utmost point pin all pass through the enameled wire with the buzzer is connected, first utmost point pin with the second utmost point pin is kept away from the one end at base center all with the buzzer casing is inlayed and is connected, the peripheral edge of base with leave the clearance between the buzzer casing.

2. The patch buzzer assembly of claim 1, wherein said first pole pin and said second pole pin are both copper media.

3. A patch buzzer assembly in accordance with claim 2, wherein said first pole leg and second pole leg are identical in construction.

4. The patch buzzer assembly structure of claim 3, wherein the first pole leg includes a first conductive region, a second conductive region, and an extension region, the first conductive region is disposed on a top layer of the base, the second conductive region is disposed on a bottom layer of the base, the extension region is connected between the first conductive region and the second conductive region, and the extension region is embedded on the buzzer housing.

5. The patch buzzer assembly structure of claim 4, wherein the buzzer housing has a limiting opening at a position opposite to the extending area, and the extending area is embedded in the limiting opening.

6. A patch buzzer assembly structure in accordance with any one of claims 1 to 5, wherein the diameter of the base is less than the diameter of the buzzer housing.

7. A patch buzzer assembly structure in accordance with claim 4 or 5, wherein the extension region extends beyond the peripheral edge of the base, the extension region having a thickness greater than the thickness of the base.

8. A patch buzzer assembly structure in accordance with any one of claims 2 to 5, wherein the first and second pole pins are further plated with a gold dielectric layer after being electroplated with a copper dielectric.

9. The patch buzzer assembly structure of claim 4 or 5, wherein the top layer of the base is provided with a pad area near the first conduction area, the pad area is electrically conducted with the first conduction area, and the pad area is connected with the buzzer through an enameled wire.

10. A patch buzzer assembly structure in accordance with claim 1, wherein the buzzer housing is a plastic housing.