M57 speaker box finished product leak detection equipment

Abstract

The utility model relates to leak detection technical field discloses M57 sound box finished product leak detection equipment, including mounting board piece, the bottom fixedly connected with bearing plate of mounting board piece, the inside top fixedly connected with the compression board of mounting board piece, the top all around of compression board is equipped with the mounting hole, the inside of compression board is equipped with the clamping groove, the inside of mounting board piece is equipped with O type ring, the inside top of mounting board piece is provided with the compression surface, the inside top fixed mounting of compression board has locating surface A, locating surface B is fixedly installed in the inside of locating surface A. In the utility model, through O type ring, sealing ring and sealing body cooperation compression surface can effectively with the surface of sound box, reduce gas leakage risk, locating surface A and locating surface B accurate positioning sound box, ensure that can accurate positioning suitable compression point, improve the straight-through rate and production efficiency of product leak detection process, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of leak detection technology, and in particular to a leak detection device for M57 speaker boxes. Background Technology

[0002] In the consumer electronics field, speakers are important audio output devices. From indoor home entertainment to outdoor leisure activities, users are constantly raising their performance requirements for speakers. If the speaker's sealing is poor, the internal speakers and key electronic components on the circuit board will be corroded by dust and moisture, which will affect the sound effect and normal use, and even cause short circuit failures. Traditional testing methods are inefficient and lack accuracy, making it difficult to meet the needs of large-scale production. The M57 speaker finished product leak testing equipment was developed to accurately and efficiently test the sealing performance of speakers and improve product quality.

[0003] A search revealed Chinese patent publication number CN107105381A, which discloses a speaker leakage detection device and method. The detection device includes a control motherboard, an air source device, a pressure regulating valve, a solenoid valve, a pressure sensor, and an air flow sensor. During detection, the device first measures the air flow L1 when the speaker is not connected, and then measures the air flow L2 when the speaker is connected. The difference in flow rate between the two measurements, ΔL = L1 - L2, is compared with the flow rate difference range of a standard sample in the same process to determine whether the speaker is qualified. This detection device and method offer high accuracy and efficiency. While high efficiency is beneficial for mass production in factories, in actual use, due to the increasingly diverse designs of speaker products, the M57 speaker leak testing equipment struggles to accurately locate suitable pressure points when using air pressure leak testing. Improper selection of pressure points can lead to poor sealing performance, ineffective blocking of gas leakage channels, and abnormal air pressure fluctuations, resulting in a high false detection rate. False detections not only cause qualified products to be mistakenly judged as unqualified, leading to unnecessary rework, but also allow products with sealing defects to slip through the testing process. This makes it difficult to effectively improve the first-pass yield of the product leak testing process, increases production costs, reduces production efficiency, and affects the quality of the company's products. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a leak testing device for M57 speaker products. It aims to improve the problem that traditional equipment is difficult to accurately locate the appropriate pressing point, resulting in poor sealing effect, high false detection rate of the testing equipment, difficulty in effectively improving the first pass rate of the product leak testing process, increased production cost, reduced production efficiency, and affected product quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an M57 speaker finished product leak testing device, comprising an installation plate, a bearing plate fixedly connected to the bottom of the installation plate, a pressing plate fixedly connected to the top inner side of the installation plate, installation holes being provided around the top of the pressing plate, a locking groove being provided inside the pressing plate, an O-ring being provided on the inner side of the installation plate, a pressing surface being provided on the inner side of the top of the installation plate, a positioning surface A being fixedly installed on the top inner side of the pressing plate, a positioning surface B being fixedly installed inside the positioning surface A, a sealing body being provided on the top of the positioning surface B, a sealing ring being fixedly connected to the outer wall of the sealing body, and a locking mechanism being fixedly connected around the outer perimeter of the installation plate.

[0006] Through the above technical solution: the support plate at the bottom of the mounting plate is used to stably support the entire equipment and ensure operational stability; the mounting holes around the top of the pressing plate on the inner side of the mounting plate can be connected to external fixing devices; the internal locking groove can provide precise positioning space for speaker placement; the O-ring on the inner side of the mounting plate and the pressing surface on the top inner side form a sealing structure; the positioning surface A on the top inner side of the pressing plate and the internal positioning surface B ensure that the speaker is in the accurate position during testing; the sealing body on the top of the positioning surface B and the sealing ring on the outer wall, together with the pressing surface and the O-ring, form a multi-layer seal for the speaker, ensuring accurate and reliable leak test data; the locking mechanism around the outer perimeter of the mounting plate is used to stably lock and fix the equipment.

[0007] As a further description of the above technical solution: The locking mechanism includes multiple locking plates, all of which are fixedly connected to the outer perimeter of the mounting plate. Pads are fixedly connected to the top of the left and right locking plates. Multiple locking fins are fixedly connected to the left side of the locking plates. A locking ring is fixedly connected to the top right side of the locking plates. Multiple locking blocks are fixedly connected to the outer perimeter of the locking ring. A connecting plate is fixedly connected to the bottom of the front locking plate. Connecting blocks are fixedly connected between adjacent locking fins.

[0008] Through the above technical solution: the locking mechanism is composed of multiple locking plates, which are tightly fixed to the outer perimeter of the mounting plate to form a stable outer frame structure. The top of the locking plates on both sides is provided with pads to provide support and ensure that the locking mechanism is connected to the designated component. Multiple locking fins extend from the left side of the locking plate to increase the locking contact area. Adjacent locking fins are connected by connecting blocks to enhance the overall rigidity. Multiple locking blocks are distributed around the outer perimeter of the locking ring on the top right side of the locking plate, which can quickly lock and position with the corresponding structure to achieve efficient assembly of equipment components. A connecting plate is fixed at the bottom of the front locking plate to facilitate lateral connection with the designated component, providing a reliable structural guarantee for the overall operation of the equipment.

[0009] As a further description of the above technical solution: Two L-shaped plates are fixedly connected to the rear right end of each mounting plate, and two L-shaped plates are fixedly connected to the rear left end of each mounting plate.

[0010] Through the above technical solution, L-shaped plate one and L-shaped plate two are symmetrically distributed at both ends of the rear side of the installation plate. They can be connected to the external fixing structure through connectors to provide support and fixing points, ensuring that the installation plate is installed stably and enhancing the overall anti-overturning ability.

[0011] As a further description of the above technical solution: A meshing block is fixedly connected to the middle of the rear side of the mounting plate, and a meshing groove is provided inside the meshing block.

[0012] Through the above technical solution, the meshing block and meshing groove facilitate precise docking and positioning with designated components, thereby improving the accuracy and stability of equipment assembly.

[0013] As a further description of the above technical solution: A connection hole is provided at the right rear side of the top of the mounting plate, and a limit ring is fixedly connected to the inside of the connection hole.

[0014] The above technical solution allows for easy connection of the equipment to other components through the connection hole and the limiting ring, while also providing limiting protection for the connector and preventing loosening of the connection.

[0015] As a further description of the above technical solution: The mounting plate has a second slot on the left side of its outer front and a first slot on its outer front.

[0016] The above technical solution allows the slot to precisely engage with and install components, ensuring accurate and stable equipment assembly and preventing component misalignment.

[0017] As a further description of the above technical solution: The inner diameter of the O-ring is set to 6-8 mm, and the inner thickness of the O-ring is set to 0.2-0.4 mm.

[0018] The above technical solution provides an O-ring with an inner diameter of 6-8mm, preferably 0.7mm, and an inner thickness of 0.2-0.4mm, preferably 0.7mm. An external 2.1mm margin is used for sealing, ensuring a tight fit to the installation area and creating a good seal. Furthermore, the pressure direction can be adjusted to the X or Y direction, facilitating precise pressure distribution control and improving the sealing effect.

[0019] As a further description of the above technical solution: The top surface of the positioning surface B is designed with a smooth shape, and the top of the positioning surface B matches the bottom of the sealing body.

[0020] Through the above technical solution, the smooth design of the top of the positioning surface B9 not only reduces damage to the speaker surface, but also perfectly matches the bottom of the sealing body 11, further enhancing the sealing performance and reducing the false test rate.

[0021] This utility model has the following beneficial effects: 1. In this utility model, the O-ring, sealing ring and sealing body can effectively fit the speaker surface through the pressing surface, making the pressing point easy to locate and operate during air pressure leak testing, reducing the risk of gas leakage. Positioning surface A and positioning surface B accurately position the speaker, ensuring that the appropriate pressing point can be accurately located, effectively reducing the false test rate of the testing equipment, ensuring the accuracy of the test results, improving the first pass rate and production efficiency of the product leak testing process, and reducing production costs.

[0022] 2. In this utility model, multiple locking plates are arranged around the mounting plate, and a stable locking mechanism is formed through the locking fins, locking rings, and locking blocks, which fit tightly to the designated position to ensure that the equipment is firmly and stably installed. The connecting plate and connecting block further enhance the connection strength between the locking fins, which can effectively suppress equipment vibration, avoid sealing failure and pressure leakage caused by vibration, ensure the accuracy and reliability of leakage test data, and reduce the risk of false tests caused by equipment loosening. Attached Figure Description

[0023] Figure 1 A perspective view of the leak testing device for the M57 speaker product proposed in this utility model; Figure 2 This is a front view of the leak testing device for the M57 speaker product proposed in this utility model; Figure 3 This is a split view of the pressing surface of the M57 speaker leak testing device proposed in this utility model; Figure 4 This is an exploded view of the sealing body of the M57 speaker leak testing device proposed in this utility model; Figure 5 This is a schematic diagram of the locking mechanism of the leak detection device for the M57 speaker product proposed in this utility model.

[0024] Legend: 1. Mounting plate; 2. Engaging mechanism; 201. Engaging plate; 202. Pad; 203. Engaging fin; 204. Engaging block; 205. Engaging ring; 206. Connecting plate; 207. Connecting block; 3. Bearing plate; 4. Pressing plate; 5. O-ring; 6. Mounting hole; 7. Engaging groove; 8. Positioning surface A; 9. Positioning surface B; 10. Sealing ring; 11. Sealing body; 12. L-shaped plate one; 13. Engaging block; 14. Engaging groove; 15. Connecting hole; 16. Slot one; 17. Slot two; 18. L-shaped plate two; 19. Pressing surface; 20. Limiting ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides an M57 speaker leak testing device, including a mounting plate 1, a bearing plate 3 fixedly connected to the bottom of the mounting plate 1, a pressing plate 4 fixedly connected to the top inner side of the mounting plate 1, mounting holes 6 are provided around the top of the pressing plate 4, a locking groove 7 is provided inside the pressing plate 4, an O-ring 5 is provided on the inner side of the mounting plate 1, a pressing surface 19 is provided on the inner side of the top of the mounting plate 1, a positioning surface A8 is fixedly installed on the top inner side of the pressing plate 4, a positioning surface B9 is fixedly installed inside the positioning surface A8, a sealing body 11 is provided on the top of the positioning surface B9, a sealing ring 10 is fixedly connected to the outer wall of the sealing body 11, and a locking mechanism 2 is fixedly connected around the outer perimeter of the mounting plate 1. Specifically, the support plate 3 fixedly connected to the bottom of the mounting plate 1 is used to stably support the entire equipment and ensure the stability during operation. The mounting holes 6 opened around the top of the pressing plate 4 on the inner side of the mounting plate 1 can be used to connect external fixing devices, which facilitates the assembly and fixing of the equipment. The locking groove 7 opened inside provides a precise positioning space for the speaker placement. The O-ring 5 on the inner side of the mounting plate 1 and the pressing surface 19 on the inner side of the top form a sealing structure. The positioning surface A8 fixed on the top of the inner side of the pressing plate 4 and the internal mounting positioning surface B9 construct a precise positioning system to ensure that the speaker is in the accurate position during testing. The sealing body 11 set on the top of the positioning surface B9 and the sealing ring 10 fixedly connected to the outer wall cooperate with the pressing surface 19 and the O-ring 5 to form a multi-layer seal for the speaker during testing, effectively preventing gas leakage, thereby ensuring the accuracy and reliability of the leak test data. The mounting plate 1 is fixedly connected to the outer perimeter of the mounting plate 1 for the stable locking and fixing of the equipment.

[0027] Reference Figure 1 , Figure 3 and Figure 5 The locking mechanism 2 includes multiple locking plates 201. The outer sides of the multiple locking plates 201 are fixedly connected to the outer perimeter of the mounting plate 1. The top of the left and right locking plates 201 is fixedly connected to a pad 202. The left side of the locking plate 201 is fixedly connected to multiple locking fins 203. The top right side of the locking plate 201 is fixedly connected to a locking ring 205. The outer perimeter of the locking ring 205 is fixedly connected to multiple locking blocks 204. The bottom of the front locking plate 201 is fixedly connected to a connecting plate 206. The adjacent locking fins 203 are fixedly connected to a connecting block 207. Specifically, the locking mechanism 2 consists of multiple locking plates 201. These locking plates 201 are tightly fixed to the outer perimeter of the mounting plate 1 to form a stable outer frame structure. The top of the locking plates 201 on the left and right sides is provided with pads 202 to provide support and ensure that the locking mechanism 2 is precisely connected to the designated components. Multiple locking fins 203 extending from the left side of the locking plate 201 increase the locking contact area and improve the locking firmness. Adjacent locking fins 203 are connected by connecting blocks 207 to further strengthen the overall rigidity. Multiple locking blocks 204 distributed around the outer perimeter of the locking ring 205 on the top right side of the locking plate 201 can be quickly locked and positioned with the corresponding structure to achieve efficient assembly between equipment components. The connecting plate 206 fixed at the bottom of the front locking plate 201 facilitates lateral connection with the designated components, enhancing the stability and integrity of the mechanism. The coordinated cooperation of all components enables the locking mechanism 2 to not only firmly fix the mounting plate 1, but also provide a reliable structural guarantee for the overall operation of the equipment, ensuring that the components remain stable and do not loosen during equipment operation.

[0028] Reference Figure 1 and Figure 3Two L-shaped plates 12 are fixedly connected to the rear right end of the mounting plate 1, and two L-shaped plates 18 are fixedly connected to the rear left end of the mounting plate 1. A meshing block 13 is fixedly connected to the rear middle of the mounting plate 1. A meshing groove 14 is provided inside the meshing block 13. A connecting hole 15 is provided at the rear right end of the top of the mounting plate 1. A limit ring 20 is fixedly connected to the inner side of the connecting hole 15. Specifically, L-shaped plates 12 and 18 are symmetrically distributed at both ends of the rear side of the mounting plate. They can be connected to the external fixing structure through connectors, providing reliable support and fixing points to ensure the stable installation of the mounting plate 1 and enhance the overall structure's anti-overturning ability. The engagement block 13 and engagement groove 14 facilitate precise docking and positioning with designated components, improving the accuracy and stability of equipment assembly. The connection hole 15, in conjunction with the limiting ring 20, facilitates the connection of the equipment with other components. On the other hand, the limiting ring 20 can limit and protect the connectors, preventing loosening and avoiding pressure leakage problems caused by component displacement and vibration during leak testing. This provides a solid guarantee for the stable operation of the equipment and accurate leak testing, improving leak testing efficiency and reliability.

[0029] Reference Figure 1 , Figure 3 and Figure 4 The mounting plate 1 has a slot 2 17 on the left side of the outer front side and a slot 16 on the right side of the outer front side. The inner diameter of the O-ring 5 is set to 6-8mm and the inner thickness of the O-ring 5 is set to 0.2-0.4mm. The top surface of the positioning surface B9 is rounded and the top of the positioning surface B9 matches the bottom of the sealing body 11. Specifically, slot 16 and slot 27 facilitate precise engagement and installation with components, ensuring the accuracy and stability of equipment assembly and effectively preventing component misalignment. The O-ring 5 has an inner diameter of 6-8mm, preferably 0.7mm, and an inner thickness of 0.2-0.4mm, preferably 0.7mm. The 2.1mm outer margin is used for sealing, ensuring a tight fit with the installation area, forming a good seal, reducing the risk of gas leakage, and ensuring the accuracy of pressure leak testing. Adjusting the pressure direction to the X or Y direction helps to accurately control the pressure distribution and improve the pressing effect. The smooth design of the top of the positioning surface B9 not only reduces damage to the speaker surface but also perfectly matches the bottom of the sealing body 11, further enhancing the sealing performance, reducing the false detection rate, effectively improving the first-pass yield of the product leak testing process, and improving the overall testing efficiency and reliability of the equipment.

[0030] Working principle: When the equipment is running, the support plate 3 firmly supports the entire equipment to prevent shaking from affecting the test results. The pressing plate 4 on the top inner side of the mounting plate 1 is connected to the external fixing device through the mounting holes 6 around the perimeter to ensure that the equipment is firmly assembled. Before the test, the M57 speaker to be tested is placed in the locking groove 7 of the pressing plate 4. The locking groove 7 is used to accurately position the speaker. At the same time, the positioning system composed of positioning surface A8 and positioning surface B9 further calibrates the speaker placement to ensure that the speaker is in the accurate test position. The O-ring 5 on the inner side of the mounting plate 1 and the pressing surface 19 on the top inner side form a sealed space to seal the speaker. During the test, the sealing body 11 and the sealing ring 10 on the outer wall, together with the pressing surface 19 and the O-ring 5, completely seal the speaker. Then, a certain pressure of gas is injected into the speaker. If there is a leak in the speaker, the internal air pressure will drop within a set time to determine whether the speaker's sealing performance is qualified. Furthermore, during equipment installation, multiple locking plates 201 surround the mounting plate 1 to form an outer frame, creating a basic support structure. The pads 202 on the top of the locking plates 201 on both sides can elevate the support, ensuring that the locking mechanism 2 is precisely aligned and fitted with the designated components, thus ensuring installation accuracy. The locking fins 203 on the left side of the locking plate 201 increase the contact area with the mounting surface, providing greater friction and enhancing the locking firmness. The connecting block 207 connects adjacent fins, making the locking fins 203 a whole, resisting deformation by external forces. The locking ring 205 and locking block 204 can be quickly locked and precisely positioned with the corresponding structure, simplifying the installation process and improving assembly efficiency. The connecting plate 206 at the bottom of the front locking plate 201 connects the designated components laterally, reinforcing the mechanism from a designated dimension. The combined action of multiple forces ensures that the locking mechanism 2 firmly fixes the mounting plate 1, effectively suppressing vibration during equipment operation, preventing pressure leakage, and ensuring accurate leak detection.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak testing device for M57 speaker finished products, including an installation plate (1), characterized in that: The bottom of the mounting plate (1) is fixedly connected to a bearing plate (3), the top inner side of the mounting plate (1) is fixedly connected to a pressing plate (4), the top four sides of the pressing plate (4) are provided with mounting holes (6), the inside of the pressing plate (4) is provided with a locking groove (7), the inside of the mounting plate (1) is provided with an O-ring (5), the top inner side of the mounting plate (1) is provided with a pressing surface (19), the top inner side of the pressing plate (4) is fixedly installed with a positioning surface A (8), the inside of the positioning surface A (8) is fixedly installed with a positioning surface B (9), the top of the positioning surface B (9) is provided with a sealing body (11), the outer wall of the sealing body (11) is fixedly connected with a sealing ring (10), and the outside four sides of the mounting plate (1) are fixedly connected with a locking mechanism (2).

2. The leak testing device for the M57 speaker product according to claim 1, characterized in that: The locking mechanism (2) includes multiple locking plates (201). The outer sides of the multiple locking plates (201) are fixedly connected to the outer perimeter of the mounting plate (1). The top of the left and right locking plates (201) is fixedly connected to a pad (202). The left side of the locking plate (201) is fixedly connected to multiple locking fins (203). The top right side of the locking plate (201) is fixedly connected to a locking ring (205). The outer perimeter of the locking ring (205) is fixedly connected to multiple locking blocks (204). The bottom of the front locking plate (201) is fixedly connected to a connecting plate (206). The adjacent locking fins (203) are fixedly connected to a connecting block (207).

3. The leak testing device for the M57 speaker product according to claim 1, characterized in that: Two L-shaped plates (12) are fixedly connected to the rear right end of the mounting plate (1), and two L-shaped plates (18) are fixedly connected to the rear left end of the mounting plate (1).

4. The leak testing device for the M57 speaker product according to claim 1, characterized in that: A meshing block (13) is fixedly connected to the middle of the rear side of the mounting plate (1), and a meshing groove (14) is provided inside the meshing block (13).

5. The leak testing device for the M57 speaker product according to claim 1, characterized in that: A connection hole (15) is provided at the right rear end of the top of the mounting plate (1), and a limit ring (20) is fixedly connected to the inner side of the connection hole (15).

6. The leak testing device for the M57 speaker product according to claim 1, characterized in that: The mounting plate (1) has a slot 2 (17) on the left side of the outer front side and a slot 1 (16) on the right side of the outer front side.

7. The leak testing device for the M57 speaker product according to claim 1, characterized in that: The inner diameter of the O-ring (5) is set to 6-8 mm, and the inner thickness of the O-ring (5) is set to 0.2-0.4 mm.

8. The leak testing device for the M57 speaker product according to claim 1, characterized in that: The top surface of the positioning surface B (9) is designed with a smooth shape, and the top of the positioning surface B (9) matches the bottom of the sealing body (11).

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