MEMS product packaging structure convenient to disassemble and repair

Abstract

The utility model discloses an MEMS product packaging structure convenient to disassemble and repair, which comprises a circuit substrate and a metal shell, the bottom of the metal shell is movably connected with the circuit substrate, and the top of the circuit substrate is provided with an MEMS sensor and an ASIC amplifier. According to the utility model, the circuit substrate, the metal shell, the MEMS sensor, the ASIC amplifier, the sound inlet hole, the mounting mechanism, the slot, the plug board, the clamping groove, the through groove, the sliding column, the stop block, the sliding plate, the connecting plate, the clamping block, the bottom plate, the limiting groove, the movable plate, the limiting block, the pull rod, the handle and the sleeve spring are matched with one another, so that the metal shell can be conveniently detached from the circuit substrate; and therefore, a user can conveniently maintain other parts on the circuit substrate, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging structures, in particular to a MEMS product packaging structure which is convenient for disassembly and repair. Background Art

[0002] The advent and application of micro-electro-mechanical system (MEMS) technology has made microphones smaller and smaller, and their performance higher and higher. MEMS microphones have many advantages, such as high signal-to-noise ratio, low power consumption, high sensitivity, the micro-package used is compatible with the mounting process, reflow soldering has no effect on the performance of MEMS microphones, and the temperature characteristics are very good. As a result, the application of MEMS microphones is becoming more and more extensive, especially in mid-to-high-end mobile phone applications.

[0003] After searching, the patent with application number CN201810994170.4 discloses a MEMS microphone packaging method, structure and electronic product. The MEMS microphone packaging method includes the following steps: providing a microphone circuit substrate, and opening a metal blind hole on the microphone circuit substrate; installing a MEMS sensor and an ASIC amplifier on the microphone circuit substrate, and the MEMS sensor and the ASIC amplifier, and the ASIC amplifier and the microphone circuit substrate are electrically connected.

[0004] However, in actual use, the above patent has the following defects: it is not convenient to remove the metal shell from the circuit substrate, and thus it is not convenient to repair other components on the circuit substrate. Therefore, we propose a MEMS product packaging structure that is easy to disassemble and repair. Utility Model Content

[0005] The purpose of the utility model is to provide a MEMS product packaging structure that is easy to disassemble and repair, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a MEMS product packaging structure that is easy to disassemble and repair, including a circuit substrate and a metal shell, the bottom of the metal shell is movably connected to the circuit substrate, the top of the circuit substrate is provided with a MEMS sensor and an ASIC amplifier, the top of the metal shell is provided with a sound inlet hole for the position of the MEMS sensor, and the metal shell and the circuit substrate are fixed by a mounting mechanism.

[0007] Furthermore, the MEMS sensor, ASIC amplifier and circuit substrate are welded by gold wire to form a complete SMT acoustic-electric transducer sensor device.

[0008] Furthermore, the installation mechanism includes a slot, an insert plate, a card slot, a through slot, a sliding column, a block, a slide plate, a connecting plate, a card block, a bottom plate, a limit slot, a movable plate, a limit block, a pull rod, a handle and a sleeve spring. Slots are provided on the left and right sides of the bottom of the metal shell, and an insert plate is movably inserted inside the slot.

[0009] Furthermore, the bottom of the plug board is fixedly connected to the top of the circuit substrate, and a card slot is provided on one side of the two plug boards away from each other. Through slots are provided on the left and right sides of the metal shell at positions corresponding to the card slots, and the through slots are connected to the slots.

[0010] Furthermore, two sliding columns are fixedly connected to the left and right sides of the circuit substrate, and the two sliding columns are fixedly connected to the same stop block on the side away from the circuit substrate. The two sliding columns are slidably connected between the two sliding columns and on the side close to the circuit substrate through a slide plate. The top of the slide plate is fixedly connected to a connecting plate, and the side of the connecting plate close to the metal shell is fixedly connected to a card block. The side of the card block away from the connecting plate passes through the through groove and the card slot in sequence and extends to the inside of the card slot. The card block is movably engaged with the card slot, and the card block is movably connected to the through groove. The left and right sides of the circuit substrate are fixedly connected to a bottom plate, and a limiting groove is provided on the top of the bottom plate.

[0011] Furthermore, a movable plate is movably connected to the top of the base plate, a limiting block is fixedly connected to the bottom of the movable plate, the bottom of the limiting block passes through the limiting groove and extends to the inside of the limiting groove, the limiting block is movably engaged with the limiting groove, and a pull rod is fixedly connected to the top of the movable plate.

[0012] Furthermore, the top of the pull rod passes through the connecting plate and extends to the outside of the connecting plate and is fixedly connected with a handle. The pull rod is movably connected to the connecting plate, and a sleeve spring is sleeved on the surface of the pull rod and located between the movable plate and the connecting plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model cooperates with the circuit substrate, metal shell, MEMS sensor, ASIC amplifier, sound inlet hole, installation mechanism, slot, plug board, card slot, through slot, sliding column, block, slide plate, connecting plate, card block, bottom plate, limit slot, movable plate, limit block, pull rod, handle and sleeve spring to facilitate the removal of the metal shell from the circuit substrate, thereby facilitating the user to repair other components on the circuit substrate, thereby greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the metal housing of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the circuit substrate of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the plug board of the utility model.

[0021] In the figure: 1. circuit board; 2. metal shell; 3. MEMS sensor; 4. ASIC amplifier; 5. sound inlet; 6. mounting mechanism; 601. slot; 602. plug-in board; 603. card slot; 604. through slot; 605. slide column; 606. block; 607. slide plate; 608. connecting plate; 609. card block; 610. bottom plate; 611. limit slot; 612. movable plate; 613. limit block; 614. pull rod; 615. handle; 616. sleeve spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-6 A MEMS product packaging structure that is easy to disassemble and repair includes a circuit substrate 1 and a metal shell 2. The circuit substrate 1 is movably connected to the bottom of the metal shell 2, and a MEMS sensor 3 and an ASIC amplifier 4 are arranged on the top of the circuit substrate 1. A sound inlet hole 5 is opened on the top of the metal shell 2 at the position of the MEMS sensor 3, and the metal shell 2 and the circuit substrate 1 are fixed by an installation mechanism 6.

[0026] Specifically, the MEMS sensor 3, the ASIC amplifier 4 and the circuit substrate 1 are welded by gold wires to form a complete SMT acoustic-electric transducer sensor device.

[0027] In a specific implementation, the installation mechanism 6 includes a slot 601, an insert plate 602, a slot 603, a through slot 604, a slide column 605, a block 606, a slide plate 607, a connecting plate 608, a block 609, a bottom plate 610, a limit slot 611, a movable plate 612, a limit block 613, a pull rod 614, a handle 615 and a sleeve spring 616. Slots 601 are provided on both sides of the bottom of the metal shell 2, and an insert plate 602 is movably inserted inside the slot 601.

[0028] Specifically, the bottom of the plug board 602 is fixedly connected to the top of the circuit substrate 1, and a card slot 603 is provided on the side of the two plug boards 602 away from each other. Through slots 604 are provided on the left and right sides of the metal shell 2 and corresponding to the card slots 603, and the through slots 604 are connected to the slot 601.

[0029] During the specific implementation, two sliding columns 605 are fixedly connected to the left and right sides of the circuit substrate 1, and the two sliding columns 605 are fixedly connected to the same stopper 606 on the side away from the circuit substrate 1. The two sliding columns 605 are slidably connected to the side close to the circuit substrate 1 through a slide plate 607. A connecting plate 608 is fixedly connected to the top of the slide plate 607. A clamping block 609 is fixedly connected to the side of the connecting plate 608 close to the metal shell 2. The side of the clamping block 609 away from the connecting plate 608 passes through the through slot 604 and the clamping slot 603 in sequence and extends to the inside of the clamping slot 603. The clamping block 609 is movably clamped with the clamping slot 603, and the clamping block 609 is movably connected to the through slot 604. A bottom plate 610 is fixedly connected to the left and right sides of the circuit substrate 1, and a limiting groove 611 is provided on the top of the bottom plate 610.

[0030] Specifically, the top of the bottom plate 610 is movably connected to a movable plate 612, the bottom of the movable plate 612 is fixedly connected to a limiting block 613, the bottom of the limiting block 613 passes through the limiting groove 611 and extends to the inside of the limiting groove 611, the limiting block 613 and the limiting groove 611 are movably clamped, and the top of the movable plate 612 is fixedly connected to a pull rod 614.

[0031] During specific implementation, the top of the pull rod 614 passes through the connecting plate 608 and extends to the outside of the connecting plate 608 and is fixedly connected to a handle 615. The pull rod 614 and the connecting plate 608 are movably connected, and a sleeve spring 616 is sleeved on the surface of the pull rod 614 and located between the movable plate 612 and the connecting plate 608.

[0032] In actual application: when the metal shell 2 needs to be removed, it is only necessary to pull the handle 615 upwards to drive the pull rod 614, the movable plate 612 and the limit block 613 to move upwards, and at the same time compress the sleeve spring 616, so that the limit block 613 is separated from the limit groove 611, and then the slide plate 607 is pulled to the side away from the card slot 603, thereby driving the connecting plate 608 and the card block 609 to move to the side away from the card slot 603, so that the card block 609 is separated from the card slot 603 and the through groove 604, and then the metal shell 2 is pulled upwards, so that the plug-in board 602 is separated from the slot 601, so that the metal shell 2 can be removed. Through the above steps, the metal shell 2 can be conveniently disassembled, which makes it convenient to repair other components on the circuit substrate 1.

[0033] All components in the present invention are universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. At the same time, standard parts used in the present application documents can be purchased from the market, and each component in the present application document can be customized according to the description in the specification and drawings. The specific connection method of each component adopts conventional means such as mature bolts, rivets, welding, etc. in the prior art, and machinery, parts and equipment adopt conventional models in the prior art.

[0034] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle, and the electrical connection between the electrical components should be completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The utility model mainly introduces the working principle and process, and no longer explains the electrical control.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A MEMS product packaging structure that is easy to disassemble and repair, characterized in that: The invention comprises a circuit substrate (1) and a metal shell (2); the bottom of the metal shell (2) is movably connected to the circuit substrate (1); the top of the circuit substrate (1) is provided with a MEMS sensor (3) and an ASIC amplifier (4); the top of the metal shell (2) is provided with a sound inlet hole (5) at the position of the MEMS sensor (3); and the metal shell (2) and the circuit substrate (1) are fixed by a mounting mechanism (6).

2. The MEMS product packaging structure that is easy to disassemble and repair according to claim 1 is characterized in that: The MEMS sensor (3), the ASIC amplifier (4) and the circuit substrate (1) are welded by gold wire to form a complete SMT acoustic-electric transducer sensor device.

3. The MEMS product packaging structure that is easy to disassemble and repair according to claim 2 is characterized in that: The installation mechanism (6) comprises a slot (601), and the slots (601) are provided on both the left and right sides of the bottom of the metal shell (2), and a plug-in board (602) is movably plugged into the inside of the slot (601).

4. The MEMS product packaging structure that is easy to disassemble and repair according to claim 3 is characterized in that: The bottom of the plug board (602) is fixedly connected to the top of the circuit substrate (1); a card slot (603) is provided on one side of the two plug boards (602) that is away from each other; through slots (604) are provided on the left and right sides of the metal shell (2) at positions corresponding to the card slots (603); and the through slots (604) are connected to the slot (601).

5. The MEMS product packaging structure that is easy to disassemble and repair according to claim 4 is characterized in that: Two sliding columns (605) are fixedly connected to the left and right sides of the circuit substrate (1); the two sliding columns (605) are fixedly connected to the same stopper (606) on the side away from the circuit substrate (1); the two sliding columns (605) are slidably connected to the side close to the circuit substrate (1) via a slide plate (607); the top of the slide plate (607) is fixedly connected to a connecting plate (608); the connecting plate (608) is fixedly connected to a card on the side close to the metal shell (2). The circuit substrate (1) comprises a block (609), wherein a side of the block (609) away from the connecting plate (608) passes through the through slot (604) and the card slot (603) in sequence and extends to the interior of the card slot (603), the block (609) and the card slot (603) are movably engaged with each other, and the block (609) and the through slot (604) are movably connected with each other, and the left and right sides of the circuit substrate (1) are fixedly connected with a bottom plate (610), and a limiting groove (611) is provided on the top of the bottom plate (610).

6. The MEMS product packaging structure that is easy to disassemble and repair according to claim 5 is characterized in that: The top of the bottom plate (610) is movably connected to a movable plate (612), the bottom of the movable plate (612) is fixedly connected to a limiting block (613), the bottom of the limiting block (613) passes through the limiting groove (611) and extends to the inside of the limiting groove (611), the limiting block (613) is movably engaged with the limiting groove (611), and the top of the movable plate (612) is fixedly connected to a pull rod (614).

7. The MEMS product packaging structure that is easy to disassemble and repair according to claim 6 is characterized in that: The top of the pull rod (614) passes through the connecting plate (608) and extends to the outside of the connecting plate (608) and is fixedly connected to a handle (615). The pull rod (614) and the connecting plate (608) are movably connected. A sleeve spring (616) is sleeved on the surface of the pull rod (614) and located between the movable plate (612) and the connecting plate (608).

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