Buckle type shielding cover structure of integrated power amplifier equipment

Abstract

The utility model relates to the technical field of structural design of electronic equipment, in particular to a buckle type shielding case structure of integrated power amplifier equipment, which comprises a shielding case body and a power amplifier shell used for mounting the shielding case body, a plurality of L-shaped buckles distributed in a circular array are mounted in the shielding case body close to the bottom, and the L-shaped buckles are arranged in the shielding case body. The inner wall of the power amplifier shell is provided with clamping grooves which are connected with the L-shaped buckles in a clamping mode. According to the utility model, through the clamping design of the L-shaped buckles which are distributed in the circular array and the clamping grooves of the power amplifier shell, the shielding cover can be quickly mounted and dismounted. The characteristic that the L-shaped buckle can move in the radial direction is matched with a linkage mechanism of the movable ring and the arc-shaped driving groove, so that a user can synchronously drive all the buckles to complete the clamping or loosening action by rotating the movable ring, and operation is easy, convenient and efficient. According to the structure, reliable connection of the shielding case and the power amplifier shell is guaranteed, later maintenance and overhaul are facilitated, meanwhile, the shielding case is stressed uniformly due to the circular array layout, and the overall stability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electronic device structural design technology, specifically to a snap-on shielding structure for integrated power amplifier devices. Background Technology

[0002] In the field of electronic equipment, integrated power amplifiers are widely used in communication, broadcasting, multimedia equipment, and many other areas due to their high integration and high efficiency. However, with the continuous improvement of the integration level of electronic devices and the increasing operating frequency, electromagnetic interference (EMI) problems are becoming increasingly prominent. Integrated power amplifiers generate electromagnetic radiation during operation. This radiation not only interferes with the normal operation of other surrounding electronic devices but may also affect the performance stability of the equipment itself. At the same time, external electromagnetic signals can also interfere with integrated power amplifiers, leading to problems such as degraded sound quality and signal distortion. Therefore, it is usually necessary to equip integrated power amplifiers with shielding covers to effectively block the propagation of electromagnetic signals and improve the electromagnetic compatibility of the equipment.

[0003] Existing technology includes an active speaker amplifier module disclosed in patent application number CN202221904835.6, comprising an amplifier module mainboard and capacitors, heat sinks, regulators, left channel output interfaces, and right channel output interfaces fixedly mounted on the upper surface of the mainboard. This active speaker amplifier module also includes: an edging portion that wraps around the edge of the mainboard; a shielding cover that covers the mainboard; and a locking bolt for fixing the shielding cover, with the bolt's shank penetrating the mainboard and extending to its lower surface. In this invention, the stud is connected to the locking bolt via an elastic component, thus allowing the mainboard to be elastically connected to the speaker, reducing the probability of damage to the amplifier module due to vibration. However, the shielding cover in this technical solution is fixed with a locking bolt, which is cumbersome to disassemble. Furthermore, most existing shielding covers use a snap-fit ​​method for fixing, but because the snap-fit ​​is mostly internal, disassembly is inconvenient, and forceful disassembly may damage the shielding cover.

[0004] In view of this, we propose a snap-on shielding structure for integrated power amplifier devices. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a snap-on shielding structure for integrated power amplifier equipment.

[0006] The technical solution of this utility model is:

[0007] An integrated power amplifier device features a snap-on shielding structure, comprising a shielding body and a power amplifier housing for mounting the shielding body. Near the bottom of the shielding body, several L-shaped snaps arranged in a circular array are installed. The inner wall of the power amplifier housing has slots for engaging with the L-shaped snaps. The L-shaped snaps can move towards or away from the center of the shielding body. A push shaft is fixedly connected to the top of the outer wall of each L-shaped snap away from the center of the shielding body. A limiting plate is fixedly connected to the end of the push shaft away from the L-shaped snaps. A movable ring is rotatably mounted on the outer ring wall of the shielding body. An arc-shaped drive groove is formed inside the movable ring, and the limiting plate is located within the arc-shaped drive groove. The two ends of the arc-shaped drive groove are respectively close to the inner and outer ring walls of the movable ring. This snap-on shielding structure of the integrated power amplifier device achieves rapid installation and removal of the shielding body through the snap-on design of the L-shaped snaps arranged in a circular array and engaging with the slots on the power amplifier housing. The radially movable L-shaped latches, combined with the linkage mechanism of the movable ring and the arc-shaped drive groove, allow users to simultaneously drive all the latches to lock or unlock by rotating the movable ring, making operation simple and efficient. This structure ensures a reliable connection between the shielding cover and the power amplifier housing, facilitates later maintenance and repair, and the circular array layout ensures even stress distribution on the shielding cover, enhancing overall stability.

[0008] As a preferred technical solution, the height of the limiting plate is greater than the diameter of the pushing shaft, and a through groove is formed inside the movable ring. The height of the through groove is equal to the diameter of the pushing shaft, and the through groove communicates with the arc-shaped drive groove. The combination of the limiting plate's greater height than the pushing shaft's diameter and the connection between the through groove and the arc-shaped drive groove ensures the stability of the pushing shaft when sliding within the arc-shaped drive groove, preventing it from disengaging and guaranteeing the reliability of the snap-fit ​​drive mechanism.

[0009] As a preferred technical solution, a metal shielding layer is fixedly connected to the inner wall of the shielding cover. The metal shielding layer on the inner wall of the shielding cover further enhances the shielding effect on electromagnetic signals, reducing electromagnetic interference from the power amplifier to the outside world and external interference to the equipment.

[0010] As a preferred technical solution, the outer wall of the shielding cover body has mounting slots, the same number as the number of L-shaped buckles, near the bottom. A guide shaft extending into the mounting slot is fixedly connected to the outer wall of each L-shaped buckle on the side furthest from the center of the shielding cover body. The cooperation between the mounting slot and the guide shaft provides precise guidance for the radial movement of the L-shaped buckles, ensuring the alignment accuracy between the buckles and the slots and improving assembly efficiency.

[0011] As a preferred technical solution, a support plate is fixedly connected to one end of the guide shaft inside the mounting groove, and the outer ring wall of the support plate is tightly fitted with the inner ring wall of the mounting groove. This tight fit between the support plate and the inner wall of the mounting groove enhances the stability of the snap-fit ​​structure, reduces wobbling during operation, and ensures reliable engagement.

[0012] As a preferred technical solution, a compression spring is fixedly installed on the support plate near the center of the shield body, and the other end of the compression spring is fixedly connected to the inner wall of the mounting groove. The compression spring ensures that the L-shaped buckle maintains continuous pressure in the engaged state, preventing the buckle from loosening due to vibration or external force, thus improving the stability of the connection.

[0013] As a preferred technical solution, the compression spring is always in a compressed state. This ensures that the L-shaped buckle maintains sufficient locking force under all circumstances, further enhancing the reliability of the shield installation.

[0014] As a preferred technical solution, two limiting protrusions are integrally formed on the inner ring wall of the movable ring, and the movable ring is rotatably connected to the ring wall of the shield body through the limiting protrusions. The design of the limiting protrusions realizes a reliable rotatable connection between the movable ring and the shield body, which not only ensures the flexibility of the movable ring's rotation but also prevents it from axially dislodging, thus extending the service life of the mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention achieves rapid installation and removal of the shielding cover through a design that uses L-shaped clips arranged in a circular array to engage with the amplifier housing's slots. The radially movable nature of the L-shaped clips, combined with the linkage mechanism of the movable ring and the arc-shaped drive groove, allows the user to simultaneously drive all clips to lock or unlock by rotating the movable ring, making operation simple and efficient. This structure ensures a reliable connection between the shielding cover and the amplifier housing, facilitates later maintenance and repair, and the circular array layout ensures even stress distribution on the shielding cover, enhancing overall stability. Attached Figure Description

[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the shielding cover body in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the movable ring in this utility model;

[0021] Figure 5 In this utility model Figure 3 Enlarged view of point A in the middle.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Shielding cover body; 10. L-shaped buckle; 11. Metal shielding layer; 12. Push shaft; 13. Limiting plate; 14. Mounting groove; 15. Guide shaft; 16. Support plate; 17. Compression spring; 2. Movable ring; 20. Arc-shaped drive groove; 21. Through groove; 22. Limiting protrusion ring; 3. Power amplifier housing; 30. Slot. Detailed Implementation

[0024] 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.

[0025] Please refer to the accompanying drawings. This utility model provides a technical solution:

[0026] like Figures 1-4 As shown, the integrated power amplifier device has a snap-on shield structure, including a shield body 1 and a power amplifier housing 3 for mounting the shield body 1. Several L-shaped snaps 10 arranged in a circular array are installed near the bottom inside the shield body 1. The inner wall of the power amplifier housing 3 has a slot 30 that engages with the L-shaped snaps 10. The L-shaped snaps 10 can move toward or away from the center of the shield body 1. A push shaft 12 is fixedly connected to the top of the outer wall of the side of the L-shaped snap 10 away from the center of the shield body 1. A limiting plate 13 is fixedly connected to the end of the push shaft 12 away from the L-shaped snap 10. A movable ring 2 is rotatably mounted on the outer ring wall of the shield body 1. An arc-shaped drive groove 20 is opened inside the movable ring 2. The limiting plate 13 is located inside the arc-shaped drive groove 20. The two ends of the arc-shaped drive groove 20 are close to the inner ring wall and the outer ring wall of the movable ring 2, respectively. The integrated power amplifier's snap-on shielding structure utilizes a circular array of L-shaped snap-on clips 10 that engage with the power amplifier housing 3's slots 30, enabling rapid installation and removal of the shielding. The radially movable nature of the L-shaped snap-on clips 10, combined with the linkage mechanism of the movable ring 2 and the arc-shaped drive groove 20, allows users to simultaneously tighten or loosen all the clips by rotating the movable ring 2, making operation simple and efficient. This structure ensures a reliable connection between the shielding and the power amplifier housing 3, facilitates future maintenance and repair, and the circular array layout ensures even stress distribution on the shielding, enhancing overall stability.

[0027] like Figure 3As shown, in a preferred embodiment, the height of the limiting plate 13 is greater than the diameter of the push shaft 12. A through groove 21 is formed inside the movable ring 2, with a height equal to the diameter of the push shaft 12. The through groove 21 communicates with the arc-shaped drive groove 20. The greater height of the limiting plate 13, combined with the communication between the through groove 21 and the arc-shaped drive groove 20, ensures the stability of the push shaft 12 when sliding within the arc-shaped drive groove 20, preventing it from dislodging and guaranteeing the reliability of the latching drive mechanism.

[0028] like Figure 3 As shown, in a preferred embodiment, a metal shielding layer 11 is fixedly connected to the inner wall of the shielding cover body 1. The metal shielding layer 11 on the inner wall of the shielding cover body 1 further enhances the shielding effect on electromagnetic signals, reducing electromagnetic interference from the power amplifier to the outside world and interference from the outside world to the equipment.

[0029] like Figure 3 and Figure 5 As shown, in a preferred embodiment, the outer wall of the shielding cover body 1 has mounting grooves 14, the same number as the L-shaped buckles 10, near the bottom. A guide shaft 15 extending into the mounting groove 14 is fixedly connected to the outer wall of the L-shaped buckle 10 on the side furthest from the center of the shielding cover body 1. The cooperation between the mounting groove 14 and the guide shaft 15 provides precise guidance for the radial movement of the L-shaped buckle 10, ensuring the alignment accuracy between the buckle and the groove 30 and improving assembly efficiency.

[0030] like Figure 3 and Figure 5 As shown, in a preferred embodiment, a support plate 16 is fixedly connected to one end of the guide shaft 15 inside the mounting groove 14, and the outer ring wall of the support plate 16 is tightly fitted with the inner ring wall of the mounting groove 14. The tight fit between the support plate 16 and the inner wall of the mounting groove 14 enhances the stability of the snap-fit ​​structure, reduces the shaking of the snap-fit ​​during operation, and ensures the reliability of the snap-fit.

[0031] like Figure 3 and Figure 5 As shown, in a preferred embodiment, a compression spring 17 is fixedly installed on the support plate 16 near the center of the shield body 1, and the other end of the compression spring 17 is fixedly connected to the inner wall of the mounting groove 14. The compression spring 17 ensures that the L-shaped buckle 10 maintains continuous pressure in the snap-fit ​​state, preventing the buckle from loosening due to vibration or external force, and improving the stability of the connection.

[0032] like Figure 3 As a preferred embodiment, the compression spring 17 is always in a compressed state. This ensures that the L-shaped latch 10 maintains sufficient locking force under all circumstances, further enhancing the reliability of the shield installation.

[0033] like Figure 5As shown, in a preferred embodiment, two limiting protrusions 22 are integrally formed on the inner ring wall of the movable ring 2. The movable ring 2 is rotatably connected to the ring wall of the shielding cover body 1 through the limiting protrusions 22. The design of the limiting protrusions 22 realizes a reliable rotatable connection between the movable ring 2 and the shielding cover body 1, which not only ensures the flexibility of the movable ring 2's rotation but also prevents it from axially dislodging, thus extending the service life of the mechanism.

[0034] In the initial installation of the integrated power amplifier equipment, the L-shaped snap-on shield structure of this utility model retracts under the action of the compression spring 17, and the movable ring 2 is in the initial position, with the limiting plate 13 near the inner ring wall of the arc-shaped drive groove 20. During installation, the shield body 1 is aligned with the power amplifier housing 3, and the movable ring 2 is rotated. The arc-shaped drive groove 20 drives the limiting plate 13 to move towards the outer ring wall of the movable ring 2, which in turn causes the L-shaped snap-on 10 to extend radially outward and engage with the slot 30 of the power amplifier housing 3 via the push shaft 12. The compression spring 17 further compresses to provide continuous pressure to ensure a reliable connection. During disassembly, the movable ring 2 is rotated in the opposite direction, and the L-shaped snap-on 10 retracts radially inward under the guidance of the arc-shaped drive groove 20, disengaging from the slot 30, allowing the shield to be removed. In addition, the mounting groove 14 and the guide shaft 15 work together to ensure precise movement of the buckle, the support plate 16 enhances the stability of the buckle, the metal shielding layer 11 on the inner wall of the shielding cover improves the electromagnetic shielding effect, and the limiting protrusion ring 22 of the movable ring 2 ensures its reliable rotation, thus realizing the rapid installation and disassembly of the shielding cover, stable connection and good electromagnetic shielding performance.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A snap-on shielding structure for an integrated power amplifier, characterized in that: The device includes a shielding cover body (1) and a power amplifier housing (3) for mounting the shielding cover body (1). Near the bottom of the shielding cover body (1), several L-shaped clips (10) arranged in a circular array are installed inside. The inner wall of the power amplifier housing (3) has slots (30) for engaging with the L-shaped clips (10). The L-shaped clips (10) can move towards or away from the center of the shielding cover body (1), with the L-shaped clips (10) moving away from the shielding cover body (1). A push shaft (12) is fixedly connected to the top of the outer wall on one side of the center. A limiting plate (13) is fixedly connected to the end of the push shaft (12) away from the L-shaped buckle (10). A movable ring (2) is rotatably installed on the outer ring wall of the shield body (1). An arc-shaped drive groove (20) is opened inside the movable ring (2). The limiting plate (13) is located in the arc-shaped drive groove (20). The two ends of the arc-shaped drive groove (20) are close to the inner ring wall and the outer ring wall of the movable ring (2), respectively.

2. The snap-on shielding structure of the integrated power amplifier device as described in claim 1, characterized in that: The height of the limiting plate (13) is greater than the diameter of the push shaft (12). A through groove (21) is opened in the movable ring (2). The height of the through groove (21) is equal to the diameter of the push shaft (12). The through groove (21) is connected to the arc-shaped drive groove (20).

3. The snap-on shielding structure of the integrated power amplifier device as described in claim 2, characterized in that: A metal shielding layer (11) is fixedly connected to the inner wall of the shielding cover body (1).

4. The snap-on shielding structure of the integrated power amplifier device as described in claim 3, characterized in that: The outer wall of the shield body (1) near the bottom has the same number of mounting slots (14) as the L-shaped buckles (10). The L-shaped buckles (10) are fixedly connected to a guide shaft (15) extending into the mounting slot (14) on the outer wall of the side away from the center of the shield body (1).

5. The snap-on shielding structure of the integrated power amplifier device as described in claim 4, characterized in that: The guide shaft (15) is located inside the mounting groove (14) and a support plate (16) is fixedly connected to one end. The outer ring wall of the support plate (16) is in close contact with the inner ring wall of the mounting groove (14).

6. The snap-on shielding structure of the integrated power amplifier device as described in claim 5, characterized in that: A compression spring (17) is fixedly installed on the side of the support plate (16) near the center of the shield body (1), and the other end of the compression spring (17) is fixedly connected to the inner wall of the mounting groove (14).

7. The snap-on shielding structure of the integrated power amplifier device as described in claim 6, characterized in that: The compression spring (17) is always in a compressed state.

8. The snap-on shielding structure of the integrated power amplifier device as described in claim 7, characterized in that: The inner ring wall of the movable ring (2) has two integrally formed limiting protrusions (22), and the movable ring (2) is rotatably connected to the ring wall of the shield body (1) through the limiting protrusions (22).

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