Novel electromagnetic buzzer

Abstract

The utility model relates to a novel electromagnetic buzzer, which comprises a buzzer main body provided with a first input end and a power supply conversion board, the power supply conversion board is provided with an output end and a second input end, the output end can be electrically connected with the first input end, and the buzzer can select whether to arrange the power supply conversion board or not according to needs. The structure of the buzzer main body does not need to be changed, and a driving control circuit does not need to be additionally arranged in equipment using the buzzer, so that the product development difficulty of the equipment using the buzzer is reduced, and the universality of the buzzer is improved.

Description

Technical Field

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

[0002] Electromagnetic active buzzer is an electronic sounder that uses the effect of electromagnetic coil on buzzer to make sound. It is used as a sound device for electronic products and has warning and prompt functions. Due to its small size, long life, low energy consumption and high sound intensity, it is widely used in UPS, air conditioners, computers, printers and other electronic appliances and instruments.

[0003] The operation of a buzzer generally requires the corresponding DC power supply or AC power supply according to its factory settings. For example, a buzzer that works with AC power cannot work directly with a DC power supply. It is necessary to additionally set up a conversion module that converts DC power into AC power on the device using the buzzer, resulting in poor versatility of the buzzer.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a novel electromagnetic buzzer, which can be equipped with a power supply conversion board according to a matching power supply, thereby improving the versatility of the buzzer.

[0006] The purpose of the utility model is achieved in this way:

[0007] A novel electromagnetic buzzer comprises a buzzer body, wherein the buzzer body is provided with a first input terminal, and also comprises a power supply conversion board, wherein the power supply conversion board is provided with an output terminal and a second input terminal, and the output terminal can be electrically connected to the first input terminal.

[0008] The power supply conversion board is provided with a direct-to-alternating conversion circuit for converting direct current into alternating current. The first input end is a first alternating current input end, the second input end of the power supply conversion board is a second direct current input end, and the output end is an alternating current output end. The buzzer body is driven by alternating current input through the first input end.

[0009] The power conversion board is provided with an AC-DC conversion circuit for converting AC power into DC power. The first input end is a first DC power input end, the second input end of the power conversion board is a second AC power input end, and the output end is a DC power output end. The buzzer body is driven by DC power input through the first input end.

[0010] As a specific solution, the DC-AC conversion circuit is a driving IC for converting DC power into AC power, the first input terminal is a first AC power input terminal, the second input terminal of the power supply conversion board is a second DC power input terminal, the output terminal is an AC power output terminal, and the buzzer body is driven by AC power input through the first input terminal.

[0011] As a specific solution, the first input end and the output end are connected and matched so that the buzzer body and the power conversion board abut against each other.

[0012] As a specific solution, the first input end includes two first terminals, the first terminals extend toward the outside of the buzzer body, and the output end includes two connecting through holes corresponding to the first terminals, and the first terminals are plug-fitted into the connecting through holes.

[0013] As a specific solution, the second input end includes two second binding posts, and the second binding posts extend toward the outside of the buzzer body.

[0014] As a specific solution, the two first binding posts are arranged radially symmetrically on the left and right sides of the center position of the buzzer body.

[0015] As a specific solution, the DC-AC conversion circuit or AC-DC conversion circuit is arranged at the center of the power conversion board, and the two second terminals are arranged radially symmetrically on the left and right sides of the center of the power conversion board.

[0016] As a specific solution, the distance between the second terminal and the first terminal in the radial direction to the center of the buzzer body is equivalent, and the first terminal and the second terminal are spaced apart from each other and evenly distributed in the circumferential direction of the center of the buzzer body.

[0017] As a specific solution, the thickness of the power conversion plate is T, 1mm≤T≤2mm.

[0018] The beneficial effects of the utility model are:

[0019] The buzzer can choose whether to set up a power conversion board as needed, and the structure of the buzzer body does not need to be changed. At the same time, there is no need to set up an additional drive control circuit in the device using the buzzer, which reduces the difficulty of product development of the device using the buzzer and improves the versatility of the buzzer.

[0020] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an exploded view of an embodiment of the utility model.

[0022] Figure 2It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0023] Figure 3 This is a schematic diagram of the electrical connection of the power supply conversion board installed on the buzzer body of the embodiment of the utility model.

[0024] Figure 4 This is a schematic diagram of electrical connections of the buzzer body according to the embodiment of the utility model without the power supply conversion board.

[0025] Figure 5 It is an enlarged view of A of the embodiment of the present invention. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] First embodiment

[0028] See also Figure 1-Figure 5 The new electromagnetic buzzer includes a buzzer body 1, which is provided with a first input terminal 21, and also includes a power conversion board 3, which is provided with an output terminal 31 and a second input terminal 32, and the output terminal 31 can be electrically connected to the first input terminal 21. The buzzer can choose whether to set the power conversion board as needed, and the structure of the buzzer body does not need to be changed. At the same time, there is no need to additionally set a drive control circuit in the device using the buzzer, which reduces the difficulty of product development of the device using the buzzer and improves the versatility of the buzzer.

[0029] The power conversion board 3 is provided with a direct-to-alternating conversion circuit for converting direct current into alternating current. The first input terminal 21 is a first alternating current input terminal, the second input terminal 32 of the power conversion board 3 is a second direct current input terminal, and the output terminal 31 is an alternating current output terminal. The buzzer body 1 is driven by alternating current input through the first input terminal 21. In this case, the buzzer body 1 needs to work through the alternating current input through the first input terminal 21, and the first input terminal 21 can be directly connected to the alternating current power supply 5.

[0030] When the device using the buzzer can only provide a DC power supply 4, the power conversion board 3 can be optionally installed. After the buzzer is equipped with the power conversion board 3, the device using the buzzer provides DC power to the second DC power input terminal, and the output terminal 31 outputs AC power to the buzzer body 1 through the first input terminal 21, so that the buzzer can work normally.

[0031] Furthermore, the DC-AC conversion circuit is a driving IC 33 for converting DC power into AC power. The first input terminal 21 is a first AC power input terminal, the second input terminal 32 of the power supply conversion board 3 is a second DC power input terminal, and the output terminal 31 is an AC power output terminal. The buzzer body 1 is driven by AC power input through the first input terminal 21.

[0032] The specific structure and working principle of the DC-AC conversion circuit may also be other existing technologies, such as the "a buzzer drive circuit" disclosed in the patent document with publication number CN103281652A. The DC power supply conversion module in this embodiment may adopt the "DC pulse to AC conversion control module" disclosed in the patent document, which can be understood by those skilled in the art.

[0033] Furthermore, the first input terminal 21 and the output terminal 31 are connected and matched to make the buzzer body 1 and the power conversion board 3 abut against each other. When the power supply type of the device using the buzzer is different from that of the buzzer body 1, it is only necessary to install the power conversion board 3, and the internal structure of the buzzer body 1 does not need to be changed. The entire buzzer body 1 can be produced and developed as a standard part, which reduces the production cost. The device using the buzzer does not need to develop a specific drive control circuit for the buzzer, which improves the versatility of the buzzer and reduces the product development difficulty and cost of manufacturers of the device using the buzzer.

[0034] Furthermore, the first input terminal 21 includes two first terminals, which extend toward the outside of the buzzer body 1, and the output terminal 31 includes two connecting through holes corresponding to the first terminals. The first terminals are plugged into the connecting through holes, and the connection structure between the first terminals and the connecting through holes is simple and easy to process. During the processing, after the first terminals and the connecting through holes are installed and connected, the two can be connected and fixed by welding, glue filling, etc., and the protruding part of the first terminals can be further cut off by processing equipment.

[0035] Furthermore, the second input terminal 32 includes two second terminals, which extend toward the outside of the buzzer body 1. An external power supply can be conveniently connected to the second terminals, and the electrical connection between the external power supply and the power conversion board 3 can be achieved by wire welding or plugging.

[0036] Furthermore, the two first terminals are arranged radially symmetrically on the left and right sides of the center position of the buzzer body 1. When the first terminals are connected and matched with the connecting through holes, the power supply conversion board 3 is not easy to be positionally offset from the buzzer, and the connection stability between the two is better.

[0037] Furthermore, the DC-AC conversion circuit or the AC-DC conversion circuit is arranged at the center of the power conversion board 3 , and the two second terminals are arranged radially symmetrically on the left and right sides of the center of the power conversion board 3 .

[0038] Furthermore, the distance between the second terminal and the first terminal in the radial direction to the center position of the buzzer body 1 is comparable, and the first terminal and the second terminal are spaced apart from each other and evenly distributed in the circumferential direction of the center position of the buzzer body 1, so that the distribution between the first terminal and the second terminal is more reasonable, and the wiring positions between them are not easy to contact each other.

[0039] Furthermore, the thickness of the power conversion board 3 is T, 1mm≤T≤2mm, and the thickness of the power conversion board 3 is relatively thin. After the power conversion board 3 is connected to the buzzer body 1, it will not have a big impact on the overall space occupied by the buzzer. The power conversion board 3 hardly changes the overall size of the buzzer. Manufacturers of equipment using the buzzer do not need to make additional designs for the structure for installing the buzzer, thereby reducing processing costs.

[0040] Second embodiment

[0041] The power conversion board 3 is provided with an AC-DC conversion circuit for converting AC power into DC power. The first input terminal 21 is a first DC power input terminal, the second input terminal 32 of the power conversion board 3 is a second AC power input terminal, and the output terminal 31 is a DC power output terminal. The buzzer body 1 is driven by DC power input through the first input terminal 21. In this case, the buzzer body 1 needs to work through the DC power input through the first input terminal 21, and the first input terminal 21 can be directly electrically connected to the DC power supply.

[0042] When the device using the buzzer can only provide AC power supply, the power conversion board 3 can be optionally installed. After the buzzer is equipped with the power conversion board 3, the device using the buzzer provides AC power to the second AC power input terminal, and the output terminal 31 outputs DC power to the buzzer body 1 through the first input terminal 21, so that the buzzer can work normally.

[0043] The remaining undescribed parts are the same as those of the first embodiment and will not be repeated here.

[0044] The above embodiments are only preferred embodiments of the present invention, and the present invention may have other embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. A novel electromagnetic buzzer, comprising a buzzer body (1), wherein the buzzer body (1) is provided with a first input terminal (21), characterized in that: It also comprises a power supply conversion board (3), wherein the power supply conversion board (3) is provided with an output end (31) and a second input end (32), wherein the output end (31) can be electrically connected to the first input end (21); The power conversion board (3) is provided with a direct-to-alternating conversion circuit for converting direct current into alternating current, the first input end (21) is a first alternating current input end, the second input end (32) of the power conversion board (3) is a second direct current input end, the output end (31) is an alternating current output end, and the buzzer body (1) is driven by alternating current input via the first input end (21); Alternatively, the power conversion board (3) is provided with an AC-DC conversion circuit for converting AC power into DC power, the first input terminal (21) is a first DC power input terminal, the second input terminal (32) of the power conversion board (3) is a second AC power input terminal, the output terminal (31) is a DC power output terminal, and the buzzer body (1) is driven by DC power input via the first input terminal (21).

2. The novel electromagnetic buzzer according to claim 1 is characterized in that: The direct-to-alternating conversion circuit is a driving IC (33) for converting direct current into alternating current, the first input terminal (21) is a first alternating current input terminal, the second input terminal (32) of the power supply conversion board (3) is a second direct current input terminal, the output terminal (31) is an alternating current output terminal, and the buzzer body (1) is driven by alternating current input via the first input terminal (21).

3. The novel electromagnetic buzzer according to claim 1 is characterized in that: The first input end (21) and the output end (31) are connected and matched so that the buzzer body (1) and the power supply conversion board (3) abut against each other.

4. The novel electromagnetic buzzer according to claim 1 is characterized in that: The first input end (21) comprises two first binding posts, the first binding posts extending towards the outside of the buzzer body (1), and the output end (31) comprises two connecting through holes corresponding to the first binding posts, the first binding posts being plug-fitted into the connecting through holes.

5. The new electromagnetic buzzer according to claim 4 is characterized in that: The second input end (32) comprises two second binding posts, and the second binding posts extend towards the outside of the buzzer body (1).

6. The novel electromagnetic buzzer according to claim 5 is characterized in that: The two first binding posts are arranged radially symmetrically on the left and right sides of the center position of the buzzer body (1).

7. The novel electromagnetic buzzer according to claim 6 is characterized in that: The direct-to-alternating conversion circuit or the alternating-to-direct conversion circuit is arranged at the center of the power conversion board (3), and the two second binding posts are arranged radially symmetrically on the left and right sides of the center of the power conversion board (3).

8. The novel electromagnetic buzzer according to claim 7 is characterized in that: The distance between the second terminal and the first terminal in the radial direction and the center position of the buzzer body (1) is equivalent, and the first terminal and the second terminal are spaced apart from each other and evenly distributed in the circumferential direction of the center position of the buzzer body (1).

9. The novel electromagnetic buzzer according to any one of claims 1 to 8, characterized in that: The thickness of the power conversion plate (3) is T, 1 mm ≤ T ≤ 2 mm.

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