Power amplifier board of small pull rod sound box

Abstract

The utility model relates to the technical field of power amplifier boards, and discloses a power amplifier board of a small pull rod sound box, which comprises a power amplifier board body and a protective frame, the front end of the protective frame is connected with a transparent cover plate through a hinge, the interiors of the two sides of the protective frame are symmetrically provided with mounting movable grooves, and top sliding holes are matched with moving heads at the two ends of a buckle mounting piece. The buckle installation pieces slide in the installation movable grooves, the installation springs on the back face of the buckle installation pieces provide outward elastic force, the protection frame is assisted to be installed in the front end of the pull rod sound box in a clamped mode, and follow-up circuit disassembly and maintenance are facilitated. Sliding blocks at the two ends of the sliding plate are matched with fixed movable hole guide grooves to ensure stable sliding of the fixed rod, the front end of the fixed rod penetrates into a fixed hole of a buckle mounting piece moving head to achieve secondary fixing, the protective frame can be disassembled by pressing an L-shaped part at the tail end of the fixed rod, pulling out the front end of the fixed rod and moving the buckle mounting piece, and the whole assembling and disassembling process is completed. And stable installation and reliable protection are provided for the power amplifier board.

Description

TECHNICAL FIELD

[0001] The utility model relates to power amplifier board technical field, concretely is a small and exquisite pull rod sound box's power amplifier board. BACKGROUND

[0002] The power amplifier board of pull rod sound box is a circuit board integrated with multiple electronic components, undertakes the heavy responsibility of power amplification of the front stage audio signal, and is full of various transistors, capacitors, resistors and the like from the structure, when receiving the weak audio signal transmitted from the audio source equipment such as mobile phone, computer, the power amplifier board rapidly processes it, improves the power of signal through the current amplification effect of transistor, and the amplified audio signal is enough to push the loudspeaker unit of sound box, makes the sound have enough loudness and fullness, whether it is the excited music melody or the clear human voice explanation, can be perfectly presented under the help of power amplifier board, and brings the high-quality auditory experience for the user.

[0003] The traditional power amplifier board has the problems in the protection installation, the connecting mode of the protection frame and the front end cover plate is complex in the installation, often needs to consume a lot of time and energy, and the installation efficiency is low, and in addition, the traditional protection frame is difficult to be quickly and accurately clamped in the front end of pull rod sound box, the process is tedious and error-prone, when maintaining, and part of the installation method adopts bolt fixing, this method needs to find a suitable screwdriver to disassemble when needing to repair, therefore it is extremely troublesome, needs to contact the internal circuit to overhaul, needs to spend a lot of time to disassemble, leads to long repair period, and the equipment availability is reduced, and in addition, the stability of the traditional fixed structure is poor, when the sound box moves and jolts, it is difficult to stabilize the power amplifier board, the power amplifier board is easy to be damaged, affects the sound quality and overall performance of the sound box, and therefore we propose a small and exquisite pull rod sound box's power amplifier board. UTILITY MODEL CONTENTS

[0004] (I) technical problem solved

[0005] In view of the defects of the prior art, the utility model provides a small and exquisite pull rod sound box's power amplifier board, and solves the above problems.

[0006] (II) technical scheme

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: A small and exquisite power amplifier board of pull rod sound equipment, including power amplifier board body and protection frame, power amplifier board body is arranged in the inside of protection frame, the front end of protection frame is hingedly connected with transparent cover plate, and the bottom of transparent cover plate is fixed in a clamping manner, the two sides of protection frame are internally provided with respectively mutually symmetrical buckle mounting piece and installation spring, and the back of buckle mounting piece is provided with symmetrically distributed installation spring, mutually symmetrical fixed rod is slidably installed between two buckle mounting pieces, the back of fixed rod is equipped with sliding plate, and fixed rod and sliding plate are installed in the two sides of protection frame, wherein the front end of fixed rod is fixed through buckle mounting piece.

[0008] Preferably, the power amplifier board body is fixedly installed in the inside of the protection frame, the top of the front end of the protection frame is hingedly connected with the transparent cover plate, the bottom of the transparent cover plate is fixed with a clamping groove, the bottom of the front end of the protection frame is fixed with a clamping block, and the clamping groove at the bottom of the transparent cover plate is clamped and matched with the clamping block.

[0009] Preferably, the two sides of the protection frame are internally provided with mutually symmetrical installation movable grooves, the top of the installation movable groove is provided with mutually symmetrical sliding holes, the buckle mounting piece is slidably installed in the inside of the installation movable groove, the two ends of the buckle mounting piece are fixed with moving heads, and the moving heads are slidably matched through the sliding holes.

[0010] Preferably, the two sides of the protection frame are internally provided with mutually symmetrical fixed movable holes, the fixed movable hole is located between the two mutually symmetrical installation movable grooves, the two ends of the fixed movable hole are provided with guide grooves in the shape of rectangle, the cylindrical surface of the fixed rod is fixed with a sliding plate, and the two ends of the sliding plate are fixed with sliding blocks in the shape of rectangle, wherein the fixed rod and the sliding plate are slidably installed in the inside of the fixed movable hole, and the sliding blocks are slidably matched with the guide grooves.

[0011] Preferably, the moving head at the two ends of the buckle mounting piece is provided with a penetrating fixed hole, the back of the buckle mounting piece is provided with an installation spring, the installation spring is located between the two moving heads, a connecting hole is provided between the installation movable groove and the fixed movable hole, and the front end of the fixed rod is respectively inserted and fixed in the connecting hole and the fixed hole.

[0012] Preferably, the end of the fixed rod is in the shape of L, the L-shaped end of the fixed rod is slidably matched through the front end of the protection frame, wherein the back of the sliding plate is provided with four fixed springs which are symmetrically arranged at the center, and the other end of the fixed spring is installed in the bottom end of the fixed movable hole.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides a small and exquisite power amplifier board of pull rod sound equipment, which has the following beneficial effects:

[0015] 1、The small pull rod sound box's power amplifier board, the front end of the protection frame is connected with the transparent cover plate by a hinge, the bottom clamping groove of the cover plate and the bottom clamping block of the front end of the protection frame are accurately clamped, the installation personnel only need to rotate the transparent cover plate around the hinge to be attached to the front end of the protection frame, press gently, the clamping groove can stably clamp the clamping block, the front end protection installation is completed instantly, the whole process consumes very short time, greatly improves the installation efficiency, the design of the transparent cover plate can be said to achieve two purposes at once, which provides protection for the front end of the power amplifier board body, effectively blocks dust and foreign matter invasion, reduces the risk of power amplifier board failure caused by external impurities, and facilitates the staff to observe the running state of the power amplifier board at any time, without disassembling the cover plate, potential problems can be found in time to ensure the stable operation of the sound box, the design of the installation movable slot and the buckle installation piece inside the two sides of the protection frame is ingenious, during installation, the buckle installation piece is aligned with the installation movable slot, the two ends of the movable head pass through the top sliding hole, so that the buckle installation piece smoothly slides in the installation movable slot, the installation spring is symmetrically distributed on the back of the buckle installation piece, providing elastic force outward, helping the protection frame to be quickly clamped and installed in the front end of the pull rod sound box, completing the first fixation, the whole installation action is completed at one time, greatly shortening the installation time and reducing the labor cost.

[0016] 2、The small pull rod sound box's power amplifier board, when the internal circuit structure of the pull rod sound box needs to be checked or repaired, the design advantage of the protection frame is fully displayed, since the protection frame is connected with the pull rod sound box through the installation piece, and the elastic force of the installation spring, the buckle installation piece can be easily separated from the installation position by gentle operation, the protection frame can be easily disassembled, so that the staff can easily access the internal circuit and quickly carry out repair work, effectively shortening the repair time and improving the availability of the equipment, in terms of fixing stability, the internal structure of the protection frame is rigorous, the fixed movable hole is located between the two installation movable slots, the fixed rod and the fixed spring are installed therein, the sliding blocks at both ends of the sliding plate are tightly fitted with the guide grooves at both ends of the fixed movable hole, ensuring the stable sliding of the fixed rod, the front end of the fixed rod is inserted into the fixed hole of the movable head of the buckle installation piece, realizing secondary fixation, the double fixation mechanism greatly enhances the stability of the installation and connection of the protection frame and the power amplifier board body, even if the pull rod sound box is jolted or vibrated during movement, the protection frame can stably fix the power amplifier board, providing a stable and reliable installation structure and protection environment for the power amplifier board, prolonging the service life of the power amplifier board, and protecting the sound quality effect and overall performance of the sound box. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic diagram of the utility model;

[0018] Figure 2 It is a structure split schematic diagram of the utility model;

[0019] Figure 3 It is a structure section view schematic diagram of the utility model;

[0020] Figure 4 is Figure 3 is a local enlarged view of A in the figure;

[0021] Figure 5 is a cross-sectional view of the protective frame structure of the utility model;

[0022] Figure 6 is a schematic view of the buckle mounting member structure of the utility model;

[0023] Figure 7 is a schematic view of the fixed rod structure of the utility model.

[0024] In the figure: 1, transparent cover plate; 2, power amplifier plate body; 3, protective frame; 4, buckle mounting member; 5, mounting spring; 6, fixed rod; 7, sliding plate; 8, fixed spring; 9, mounting movable slot; 10, connecting hole; 11, fixed movable hole; 12, fixed hole; 13, moving head; 14, sliding block; 15, clamping block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figures 1-7 , a small pull rod sound box power amplifier plate, including power amplifier plate body 2 and protective frame 3, power amplifier plate body 2 is arranged inside protective frame 3, the front end of protective frame 3 is hingedly connected with transparent cover plate 1, and the bottom of transparent cover plate 1 is fixed by clamping, the inside of the two sides of protective frame 3 is respectively provided with mutually symmetrical buckle mounting member 4 and mounting spring 5, and mounting spring 5 is arranged on the back of buckle mounting member 4 and is symmetrically distributed, mutually symmetrical fixed rod 6 is slidably installed between the two buckle mounting members 4, the back of fixed rod 6 is provided with sliding plate 7, and fixed rod 6 and sliding plate 7 are installed inside the two sides of protective frame 3, wherein the front end of fixed rod 6 is used to fix buckle mounting member 4.

[0027] Further, power amplifier plate body 2 is fixedly installed inside protective frame 3, the front end top of protective frame 3 is hingedly connected with transparent cover plate 1, the bottom of transparent cover plate 1 is fixed with a clamping groove, the front end bottom of protective frame 3 is fixed with clamping block 15, the clamping groove at the bottom of transparent cover plate 1 is clamped and matched with clamping block 15, which plays a role in protecting the front end of power amplifier plate body 2 and facilitating observation of the running state of the power amplifier plate.

[0028] Further, the two sides of the protective frame 3 are internally provided with mutually symmetrical mounting movable slots 9, the top of the mounting movable slots 9 is provided with mutually symmetrical sliding holes, the buckle mounting piece 4 is slidingly mounted in the mounting movable slots 9, the two ends of the buckle mounting piece 4 are fixedly provided with moving heads 13, and the moving heads 13 slidingly fit through the sliding holes, so that the buckle mounting piece 4 is flexibly mounted and moved, and subsequent related operations and installation and fixation of the protective frame 3 are facilitated.

[0029] Further, the two sides of the protective frame 3 are internally provided with mutually symmetrical mounting movable slots 9, the top of the mounting movable slots 9 is provided with mutually symmetrical sliding holes, the buckle mounting piece 4 is slidingly mounted in the mounting movable slots 9, the two ends of the buckle mounting piece 4 are fixedly provided with moving heads 13, and the moving heads 13 slidingly fit through the sliding holes, so that the buckle mounting piece 4 is flexibly mounted and moved, and subsequent related operations and installation and fixation of the protective frame 3 are facilitated.

[0030] Further, the two ends of the moving heads 13 of the buckle mounting piece 4 are provided with penetrating fixing holes 12, the back of the buckle mounting piece 4 is provided with an installation spring 5, the installation spring 5 is located between the two moving heads 13, connecting holes 10 are provided between the mounting movable slots 9 and the fixed movable holes 11, and the front ends of the fixed rods 6 are respectively inserted into the connecting holes 10 and the fixed holes 12, so as to stably fix the buckle mounting piece 4 and enhance the stability and reliability of the installation structure of the protective frame 3.

[0031] Further, the end of the fixed rod 6 is in L shape, the L-shaped end of the fixed rod 6 slidingly fits through the front end of the protective frame 3, the back of the sliding plate 7 is provided with four fixed springs 8 which are symmetrically arranged around the center axis, one end of each fixed spring 8 is mounted to the bottom end of the fixed movable hole 11, so as to facilitate the operation and position adjustment of the fixed rod 6, flexibly control the state of the entire installation structure, and ensure the convenience of installation and disassembly of the protective frame 3.

[0032] Structure description:

[0033] Transparent cover plate 1: the transparent cover plate 1 is connected with the protective frame 3 through the front end hinge, and the bottom clamping groove is clamped with the front end clamping block 15 of the protective frame 3, which not only protects but also facilitates the observation of the operation of the power amplifier plate body 2;

[0034] Power amplifier plate body 2: the power amplifier plate body 2 is a core component, which is fixedly installed in the protective frame 3 and is responsible for key work such as audio signal amplification, and determines the sound quality performance of the sound;

[0035] Protective frame 3: the protective frame 3 wraps the power amplifier plate body 2, and is provided with structures such as mounting movable slots 9 on the two sides, is connected with the transparent cover plate 1 at the front end, and provides a protection and installation and fixation basis;

[0036] Buckle installation 4: buckle installation 4 is located in the installation of the two sides of the protective frame 3 inside the movable slot 9, both ends have moving head 13, can slide and cooperate with the fixed rod 6 to realize installation;

[0037] Installation spring 5: installation spring 5 is symmetrically distributed on the back of buckle installation 4, provides elastic force, helps the protective frame 3 to be quickly buckled and installed in the front end of the pull rod sound;

[0038] Fixed rod 6: fixed rod 6 slides between two buckle installations 4, the front end is inserted into the fixed hole 12 of the buckle installation 4, plays a secondary fixed role;

[0039] Sliding plate 7: sliding plate 7 is installed on the back of fixed rod 6, both ends of sliding block 14 cooperate with fixed movable hole 11 guide groove, guarantee the stable sliding of fixed rod 6;

[0040] Fixed spring 8: fixed spring 8 is installed in fixed movable hole 11, one end of sliding plate 7 provides elastic support and operation convenience for the adjustment position of fixed rod 6;

[0041] Installation movable slot 9: installation movable slot 9 is opened in the two sides of the protective frame 3 inside, the top has a sliding hole, which is used for the flexible installation and movement of buckle installation 4;

[0042] Connecting hole 10: connecting hole 10 is located between installation movable slot 9 and fixed movable hole 11, the front end of fixed rod 6 is inserted through, so as to realize the stable fixation of buckle installation 4;

[0043] Fixed movable hole 11: fixed movable hole 11 is located inside the two sides of the protective frame 3, between two installation movable slots 9, provides installation space for fixed rod 6 and fixed spring 8;

[0044] Fixed hole 12: fixed hole 12 is opened in the moving head 13 of buckle installation 4, which is used for the front end of fixed rod 6 to be inserted, so as to realize the stable fixation of buckle installation 4;

[0045] Moving head 13: moving head 13 is fixed at both ends of buckle installation 4, penetrates through the sliding hole at the top of installation movable slot 9, assists the sliding and connection of buckle installation 4;

[0046] Sliding block 14: sliding block 14 is fixed at both ends of sliding plate 7, cooperates with the guide groove at both ends of fixed movable hole 11, ensures the smooth sliding of fixed rod 6;

[0047] Clamping block 15: clamping block 15 is fixed at the bottom of the front end of protective frame 3, and is clamped with the clamping groove at the bottom of transparent cover plate 1, so as to complete the fixation of the front end protection structure.

[0048] Working principle: the front end of the protection frame 3 is connected with the transparent cover plate 1 through a hinge, forming an openable protection space, the bottom of the transparent cover plate 1 is provided with a clamping groove, and the clamping block 15 at the bottom of the front end of the protection frame 3 is accurately clamped with the clamping groove, which is simple and convenient to operate, and when installing, only the transparent cover plate 1 needs to be rotated around the hinge to be attached to the front end of the protection frame 3, and then the clamping groove can stably clamp the clamping block 15 by gently pressing, so that the transparent cover plate 1 is fixed, thereby providing protection for the front end of the power amplifier plate body 2, and the transparent design is convenient for observing the running state of the power amplifier plate at any time, and the mounting structure inside the two sides of the protection frame 3 is the key part of the whole mounting principle, the two sides are respectively provided with symmetrically arranged mounting movable grooves 9, the sliding holes at the top of the mounting movable grooves 9 are matched with the moving heads 13 at the two ends of the buckle mounting piece 4, when installing, the buckle mounting piece 4 is aligned with the mounting movable grooves 9, the moving heads 13 pass through the sliding holes, so that the buckle mounting piece 4 can smoothly slide in the mounting movable grooves 9, the back surface of the buckle mounting piece 4 is provided with the mounting spring 5, the mounting spring 5 is symmetrically distributed and located between the two moving heads 13, and the mounting spring 5 provides an elastic force outward for the buckle mounting piece 4, under the elastic force of the mounting spring 5, the front end of the mounting piece 4 is clamped and mounted in the front end of the pull rod sound box to be fixed for the first time, wherein the protection frame 3 is convenient for disassembling, checking and repairing the internal circuit structure through the buckle mounting piece 4, inside the two sides of the protection frame 3, the fixed movable hole 11 is located between the two mounting movable grooves 9, the fixed rod 6 and the fixed spring 8 are mounted in the fixed movable hole 11, the fixed spring 8 at the two ends of the cylindrical surface of the fixed rod 6 is fixed with a rectangular sliding block 14, the sliding block 14 is matched with the guide groove at the two ends of the fixed movable hole 11, so as to ensure the stable sliding of the fixed rod 6, the front end of the fixed rod 6 is inserted into the fixed hole 12 on the moving head 13 of the buckle mounting piece 4, so as to fix the buckle mounting piece 4, thereby realizing secondary fixing, when the power amplifier plate body 2 needs to be installed, the L-shaped part at the end of the fixed rod 6 is pressed, so as to overcome the elastic force of the fixed spring 8 and slide forward, thereby driving the sliding plate 7 to move in the fixed movable hole 11, and the front end of the fixed rod 6 is extracted from the fixed hole 12, at this time, the buckle mounting piece 4 can be moved, so as to realize the disassembly of the protection frame 3, and the whole installation process is completed, thereby providing a stable and reliable installation structure and protection environment for the power amplifier plate.

[0049] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A power amplifier board for a compact telescopic speaker, comprising a power amplifier board body (2) and a protective frame (3), characterized in that: The power amplifier board body (2) is set inside the protective frame (3). The front end of the protective frame (3) is hinged to a transparent cover plate (1), and the bottom of the transparent cover plate (1) is fixed by a snap-fit ​​method. The protective frame (3) is equipped with symmetrical snap-fit ​​mounting parts (4) and mounting springs (5) on both sides. The mounting springs (5) are symmetrically distributed on the back of the snap-fit ​​mounting parts (4). The two snap-fit ​​mounting parts (4) are slidably installed with symmetrical fixing rods (6). The back of the fixing rods (6) is provided with a sliding plate (7). The fixing rods (6) and the sliding plate (7) are installed inside both sides of the protective frame (3). The snap-fit ​​mounting parts (4) are fixed by the front end of the fixing rods (6).

2. The amplifier board for a compact telescopic speaker according to claim 1, characterized in that: The power amplifier board body (2) is fixedly installed inside the protective frame (3). The front end of the protective frame (3) is hinged to a transparent cover plate (1). The bottom of the transparent cover plate (1) is fixed with a slot. The bottom of the front end of the protective frame (3) is fixed with a card block (15). The slot at the bottom of the transparent cover plate (1) and the card block (15) engage with each other.

3. The amplifier board for a compact telescopic speaker according to claim 1, characterized in that: The protective frame (3) has symmetrical mounting slots (9) on both sides, and symmetrical sliding holes on the top of the mounting slots (9). The snap-fit ​​mounting piece (4) is slidably installed inside the mounting slot (9), and the two ends of the snap-fit ​​mounting piece (4) are fixed with moving heads (13), and the moving heads (13) slide through the sliding holes.

4. The amplifier board for a compact telescopic speaker according to claim 3, characterized in that: The protective frame (3) has symmetrical fixed movable holes (11) on both sides. The fixed movable holes (11) are located between two symmetrical mounting movable slots (9). The fixed movable holes (11) have rectangular guide slots at both ends. The cylindrical surface of the fixed rod (6) is fixed with a sliding plate (7). The two ends of the sliding plate (7) are fixed with rectangular sliding blocks (14). The fixed rod (6) and the sliding plate (7) are slidably installed inside the fixed movable holes (11). The sliding blocks (14) are slidably engaged with the guide slots.

5. The amplifier board for a compact telescopic speaker according to claim 3, characterized in that: The moving heads (13) at both ends of the buckle mounting part (4) are provided with through fixing holes (12). The back of the buckle mounting part (4) is provided with a mounting spring (5), and the mounting spring (5) is located between the two moving heads (13). A connecting hole (10) is provided between the mounting movable groove (9) and the fixing movable hole (11). The front end of the fixing rod (6) is inserted and fixed inside the connecting hole (10) and the fixing hole (12) respectively.

6. The amplifier board for a compact telescopic speaker according to claim 5, characterized in that: The end of the fixing rod (6) is L-shaped, and the L-shaped end of the fixing rod (6) slides through the front end of the protective frame (3). The back of the sliding plate (7) is provided with four central axis symmetrical fixing springs (8), and the other end of the fixing springs (8) is installed at the bottom of the fixed movable hole (11).

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