Sheet and shell combined special alarm

Abstract

The utility model belongs to the technical field of alarms, and particularly relates to a sheet and shell combined special alarm, which comprises a shell. The bottom of the shell is fixedly connected with a buzzing sheet; the bottom of the buzzing sheet is fixedly connected with a tin PAD; the bottom of the buzzing piece is fixedly connected with a red wire and a black wire through a tin PAD. An upper cavity is formed in the shell; a sound outlet hole is formed in the top of the shell; the buzzer is directly bonded on the shell made of less materials, and a rear cover is not arranged, so that the buzzer can be widely applied to a dust-free environment, the processes are reduced, the accumulation of materials is greatly reduced, the cost can be greatly reduced, and the market competitiveness is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm devices, in particular to a special alarm device composed of a sheet and a shell. Background Art

[0002] An alarm is a device that emits sound, light or other signals to alert people to potential threats or emergencies. They are widely used in security systems, fire protection systems, cars, buildings and other environments. The design and function of the alarm depends on the needs of the specific application. They play an important role in improving safety, protecting property and warning of emergencies.

[0003] A Chinese patent with announcement number CN217982507U discloses a buzzer cavity structure of an audible and visual alarm, which solves the technical problem that the piezoelectric buzzer can be fixedly installed by conductive double-sided tape, but the sound source of the sound element of the piezoelectric buzzer mainly comes from the piezoelectric vibration plate, which easily causes the piezoelectric buzzer to loosen and fall off during vibration; it includes an outer shell and a bottom plate, a sound outlet hole is opened in the middle of the top of the outer shell, the interior of the outer shell is divided into a front cavity and a rear cavity in sequence by the piezoelectric buzzer, a circular ring is bonded to the top of the piezoelectric buzzer, and the top of the circular ring is fixedly connected to the inner wall of the top of the outer shell; the utility model can bond the piezoelectric buzzer by adhesive, and the piezoelectric buzzer can be fixed to the bottom end of the circular ring, the rubber ring can be supported by the bottom plate, the circular plate at the top of the bottom plate can limit the rubber ring, and can prevent the rubber ring from moving horizontally, and the rubber ring can fill the gap between the piezoelectric buzzer and the top of the bottom plate.

[0004] As mentioned above, the patent provides a buzzer cavity structure for the sound and light alarm. Although it can prevent the piezoelectric buzzer from moving horizontally and the piezoelectric buzzer is not easy to loosen or fall off, it is safe and reliable. However, the lead wires lead the positive and negative poles of the piezoelectric buzzer out of the shell and communicate with external signals, and then the finished product is assembled with the back cover. The process is complicated and there is material accumulation, which cannot reduce costs.

[0005] Here we offer a special alarm in the form of a sheet and shell combination. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model is to overcome the existing technology.

[0007] In order to solve the above technical problems, the utility model provides a special alarm device composed of a sheet and a shell, comprising a shell; a buzzer sheet is fixedly connected to the bottom of the shell; a tin PAD is fixedly connected to the bottom of the buzzer sheet; a red wire and a black wire are respectively fixedly connected to the bottom of the buzzer sheet through the tin PAD; an upper cavity is opened inside the shell; and a sound outlet hole is opened at the top of the shell.

[0008] In an embodiment of the present invention, the number of the tin PADs is set to two, and the surfaces of the two tin PADs are fixedly connected to one end of the red wire and the black wire respectively.

[0009] In one embodiment of the present invention, the tin PAD is made of tin alloy, and the tin PAD is used to connect electronic components.

[0010] In one embodiment of the present invention, the buzzer is made of piezoelectric ceramics; the buzzer can vibrate under the excitation of an electric field to produce audible sound.

[0011] In one embodiment of the utility model, the shapes of the buzzer plate and the shell are both circular; the radius of the buzzer plate is larger than the radius of the shell; and the surface of the buzzer plate is bonded to the bottom of the shell by glue.

[0012] In one embodiment of the utility model, the shell is made of stainless steel; the interior of the shell is used for sound propagation of the buzzer through the upper cavity.

[0013] In one embodiment of the utility model, a connecting lug is fixedly connected to the surface of the shell; the number of the connecting lugs is set to two, and the two connecting lugs are symmetrically arranged on the surface of the shell.

[0014] In an embodiment of the present invention, a connection hole is provided on the surface of the connection ear; and the material of the connection ear is glass fiber reinforced plastic.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] The utility model discloses a special alarm device combining a sheet and a shell, in which a buzzer sheet is directly bonded to a shell with less material and has no back cover, and can be widely used in a dust-free environment. While reducing the number of working steps, it greatly reduces the accumulation of materials, can significantly reduce costs, and greatly improves market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the bottom structure in the utility model;

[0020] Figure 3 It is the front view of the utility model;

[0021] Figure 4 It is a schematic diagram of the bottom structure of the buzzer piece in the utility model;

[0022] Figure 5 It is a schematic diagram of the shell structure in the utility model.

[0023] Explanation of the reference numerals in the specification: 1. Shell; 2. Buzzer; 3. Tin PAD; 4. Red wire; 5. Black wire; 6. Upper cavity; 7. Sound outlet; 8. Connecting ear; 9. Connecting jack. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Reference Figure 1-5 As shown, a special alarm device composed of a sheet and a shell comprises a shell 1; a buzzer sheet 2 is fixedly connected to the bottom of the shell 1; a tin PAD 3 is fixedly connected to the bottom of the buzzer sheet 2; a red wire 4 and a black wire 5 are respectively fixedly connected to the bottom of the buzzer sheet 2 through the tin PAD 3; an upper cavity 6 is provided inside the shell 1; a sound outlet hole 7 is provided on the top of the shell 1; when working, the buzzer sheet 2 is fixed to the bottom of the shell 1, and the red wire 4 and the black wire 5 are connected through the tin PAD 3, and the conductivity of the red wire 4 and the black wire 5 is utilized to transmit current to the bottom of the buzzer sheet 2, so that the buzzer sheet 2 vibrates and makes sound, and the sound is amplified in the upper cavity 6 and dissipated through the sound outlet hole 7.

[0026] Further, such as Figure 2 and Figure 4 As shown, the number of the tin PAD3 is set to two, and the surfaces of the two tin PAD3 are fixedly connected to one end of the red wire 4 and the black wire 5 respectively; the tin PAD3 is made of tin alloy, and the tin PAD3 is used to connect electronic components; the material of the buzzer piece 2 is piezoelectric ceramics; the buzzer piece 2 can vibrate under the excitation of an electric field to produce an audible sound; when working, two tin PAD3 are set, which are respectively connected to the red wire 4 and the black wire 5, and the tin PAD3 is made of tin alloy and has a certain conductive function, and the material of the buzzer piece 2 is piezoelectric ceramics, which has excellent piezoelectric properties, can vibrate under the excitation of an electric field, and produce an audible sound.

[0027] Further, such as Figure 1 and Figure 3As shown, the shapes of the buzzer piece 2 and the shell 1 are both circular; the radius of the buzzer piece 2 is larger than the radius of the shell 1; the surface of the buzzer piece 2 is glued to the bottom of the shell 1 by glue; the material of the shell 1 is stainless steel; the interior of the shell 1 is used for the sound propagation of the buzzer piece 2 through the upper cavity 6; the surface of the shell 1 is fixedly connected with a connecting ear 8; the number of the connecting ears 8 is set to two, and the two connecting ears 8 are symmetrically arranged on the surface of the shell 1; the surface of the connecting ear 8 is provided with a connecting jack 9; the material of the connecting ear 8 is glass fiber reinforced plastic; when working, the buzzer piece 2 and the shell 1 are set The buzzer sheet 2 is arranged to be circular, and the radius of the buzzer sheet 2 is larger than the radius of the shell 1, so that the buzzer sheet 2 is glued to the bottom of the shell 1, and then the shell 1 is completely attached to the surface of the buzzer sheet 2. The shell 1 is made of stainless steel, which has corrosion resistance and oxidation resistance and can be used in environments with severe weather or chemical corrosion. The connecting ear 8 is fixed on the surface of the shell 1, and a connecting jack 9 is opened on the connecting ear 8. The shell 1 is installed in a corresponding dust-free environment by the connecting jack 9 and the connecting ear 8. The connecting ear 8 is made of glass fiber reinforced plastic. By utilizing its light weight and the strength of glass fiber, it can be used for a long time, thereby improving the adaptability of use.

[0028] Working principle: Since the above patent provides a buzzer cavity structure of the sound and light alarm, although it can prevent the piezoelectric buzzer 2 from moving horizontally, and the piezoelectric buzzer 2 is not easy to loosen or fall off, it is safe and reliable. However, the lead wire leads the positive and negative poles of the piezoelectric buzzer 2 out of the shell and communicates with the external signal, and then the finished product is assembled with the back cover. The process is complicated and there is material accumulation, and the cost cannot be reduced. When working, the buzzer 2 is fixed to the bottom of the shell 1, and the red wire 4 and the black wire 5 are connected through the tin PAD3. The conductivity of the red wire 4 and the black wire 5 is used to transmit the current to the bottom of the buzzer 2, so that the buzzer 2 vibrates and makes a sound. The sound is amplified in the upper cavity 6 and dissipated through the sound outlet 7. Two tin PAD3s are set, which are respectively connected to the red wire 4 and the black wire 5. The tin PAD3 is made of tin alloy and has a certain conductive function. The material of the buzzer 2 is piezoelectric ceramic, which has excellent piezoelectric properties and can be excited in the electric field. The buzzer 2 and the shell 1 are set to be circular, and the radius of the buzzer 2 is larger than the radius of the shell 1, so that the buzzer 2 is glued to the bottom of the shell 1 by glue, and then the shell 1 is completely attached to the surface of the buzzer 2. The shell 1 is made of stainless steel, which has corrosion resistance and oxidation resistance and can be used in environments with severe weather or chemical corrosion. The connecting ear 8 is fixed on the surface of the shell 1, and a connecting jack 9 is opened on the connecting ear 8. The shell 1 is installed in a corresponding dust-free environment by the connecting jack 9 and the connecting ear 8. The connecting ear 8 is made of glass fiber reinforced plastic. It can be used for a long time by utilizing its light weight and the strength of glass fiber, thereby improving its adaptability to use. The buzzer 2 is directly bonded to the shell 1 with less material, and there is no back cover, so it can be widely used in a dust-free environment. While reducing the number of processes, it greatly reduces the accumulation of materials, which can greatly reduce costs and greatly improve market competitiveness.

[0029] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A special alarm device composed of a sheet and a shell, characterized in that: The invention comprises a shell (1); a buzzer (2) is fixedly connected to the bottom of the shell (1); a tin PAD (3) is fixedly connected to the bottom of the buzzer (2); a red wire (4) and a black wire (5) are respectively fixedly connected to the bottom of the buzzer (2) through the tin PAD (3); an upper cavity (6) is provided inside the shell (1); and a sound outlet hole (7) is provided at the top of the shell (1).

2. A sheet and shell combined special alarm according to claim 1, characterized in that: The number of the tin PADs (3) is set to two, and the surfaces of the two tin PADs (3) are fixedly connected to one end of the red wire (4) and the black wire (5) respectively.

3. A sheet and shell combined special alarm according to claim 1, characterized in that: The tin PAD (3) is made of tin alloy and is used for connecting electronic components.

4. A sheet and shell combined special alarm according to claim 1, characterized in that: The buzzer plate (2) is made of piezoelectric ceramics; the buzzer plate (2) can vibrate under electric field excitation to produce audible sound.

5. A sheet and shell combined special alarm according to claim 1, characterized in that: The shapes of the buzzer plate (2) and the shell (1) are both circular; the radius of the buzzer plate (2) is greater than the radius of the shell (1); and the surface of the buzzer plate (2) is bonded to the bottom of the shell (1) by glue.

6. A sheet and shell combined special alarm according to claim 5, characterized in that: The shell (1) is made of stainless steel; the interior of the shell (1) is used for propagation of the sound of the buzzer (2) through the upper cavity (6).

7. A sheet and shell combined special alarm according to claim 1, characterized in that: A connecting lug (8) is fixedly connected to the surface of the shell (1); the number of the connecting lugs (8) is set to two, and the two connecting lugs (8) are symmetrically arranged on the surface of the shell (1).

8. A sheet and shell combined special alarm according to claim 7, characterized in that: A connection socket (9) is provided on the surface of the connection lifting ear (8); the material of the connection lifting ear (8) is glass fiber reinforced plastic.

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