An easily installed audio power amplifier circuit blind hole-free circuit board
Patent Information
- Application Number
- CN202522103291.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0003]然而，传统的音频功放电路板在安装时是通过多个螺栓将电路板安装在金属机箱上，但螺栓固定的方式相对比较死板，一旦电路板安装好后，后期需要对电路板进行位置调整、更换或维修，就需要逐个拧下螺栓，而机箱内空间狭窄，操作不便，并且会因为多次拧动螺栓导致螺纹损坏，影响安装的稳固性
[0013]The beneficial effects of this utility model are as follows: Two fixing strips are installed on the circuit board body, and the top of the fixing strips abuts against a pressure strip. Both the pressure strip and the fixing strip are equipped with shock-absorbing pads. The two shock-absorbing pads abut against the upper and lower surfaces of the circuit board body, respectively. The fixing strips with shock-absorbing pads and the pressure strip are double-clamped and fixed to the circuit board body by bolts, which can effectively buffer external vibrations and reduce the impact of vibrations on the circuit board body. The side wall of the fixing strip is fixedly connected to the mounting strip. The two mounting strips are connected to the base through a limiting structure. Two limiting blocks are slidably connected inside the mounting strip. Two limiting grooves are opened on the base. The limiting blocks engage with the limiting grooves. A spring is fixedly connected between the mounting strip and the limiting blocks. The mounting strip and the base can be quickly connected by engaging the limiting blocks on the mounting strip with the grooves on the base, thereby quickly fixing the circuit board body. The operation is simple and flexible, and it is convenient for the later disassembly and maintenance of the circuit board.
Smart Images
Figure CN224698098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a circuit board, specifically an easy-to-install audio power amplifier circuit circuit board without blind holes, belonging to the field of circuit board technology. Background Technology
[0002] An audio amplifier circuit board is an electronic circuit board used to amplify audio signals. It plays a crucial role in many audio-related devices such as audio equipment, broadcasting systems, and car audio systems. The working principle of an audio amplifier circuit board is as follows: the input audio signal is first pre-processed through the audio input circuit, and then sent to the power amplifier chip. With the power supply provided by the power circuit, the power amplifier chip amplifies the audio signal to a sufficient power level. The amplified audio signal is then filtered and protected by the audio output circuit before finally being transmitted to the speaker. This drives the speaker's voice coil to vibrate, causing the speaker's cone or diaphragm to vibrate mechanically, thereby converting the electrical signal into a sound signal and playing the sound.
[0003] However, traditional audio amplifier circuit boards are installed by mounting them onto a metal chassis with multiple bolts. But the bolt fixing method is relatively rigid. Once the circuit board is installed, if the position of the circuit board needs to be adjusted, replaced or repaired later, the bolts need to be unscrewed one by one. However, the space inside the chassis is narrow, making the operation inconvenient, and the threads will be damaged due to repeated tightening of the bolts, affecting the stability of the installation. Utility Model Content
[0004] The purpose of this utility model is to provide an easy-to-install audio amplifier circuit board without blind holes in order to solve the above problems. The mounting strip can be quickly connected to the base by the engagement of the limiting block on the mounting strip and the slot on the base, thereby quickly fixing the circuit board body. The operation is simple and flexible, which facilitates the disassembly and maintenance of the circuit board in the later stage. In addition, the installation of shock-absorbing pads increases the stability of the circuit board body during installation.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: an easy-to-install audio power amplifier circuit board without blind holes, comprising a circuit board body, with fixing structures installed at both ends of the circuit board body, each fixing structure including a fixing strip, two fixing strips installed on the circuit board body, the top of each fixing strip abutting against a pressure strip, shock-absorbing pads installed on both the pressure strip and the fixing strip, the two shock-absorbing pads abutting against the upper and lower end surfaces of the circuit board body respectively, mounting strips fixedly connected to the side walls of the fixing strips, the two mounting strips connected to a base through a limiting structure, the limiting structure including limiting blocks, two limiting blocks slidably connected within the mounting strips, two limiting grooves opened on the base, the limiting blocks engaging with the limiting grooves, a spring fixedly connected between the mounting strips and the limiting blocks, and multiple through holes opened on the circuit board body.
[0006] Preferably, a bolt is rotatably connected to the pressure strip, the bolt is slidably connected to the circuit board body, and the bottom end of the bolt is threadedly connected to the fixing strip.
[0007] Preferably, the cross-section of the fixing strip is L-shaped and the base is U-shaped.
[0008] Preferably, the limiting block has an overall "L" shape, and the ends of the limiting block have a trapezoidal shape.
[0009] Preferably, a guide rod is fixedly connected to the limiting block, and the guide rod is slidably connected to the mounting strip.
[0010] Preferably, a connecting plate is fixedly connected to the top of the limiting block, and the connecting plate has a groove.
[0011] Preferably, a heat sink is installed at the bottom of the circuit board body by screws, and a thermally conductive adhesive layer is provided between the heat sink and the circuit board body.
[0012] Preferably, both ends of the heat sink are fixedly connected to insert blocks, and the fixing strip has a slot, and the insert blocks are inserted into the slot.
[0013] The beneficial effects of this utility model are as follows: Two fixing strips are installed on the circuit board body, and the top of the fixing strips abuts against a pressure strip. Both the pressure strip and the fixing strip are equipped with shock-absorbing pads. The two shock-absorbing pads abut against the upper and lower surfaces of the circuit board body, respectively. The fixing strips with shock-absorbing pads and the pressure strip are double-clamped and fixed to the circuit board body by bolts, which can effectively buffer external vibrations and reduce the impact of vibrations on the circuit board body. The side wall of the fixing strip is fixedly connected to the mounting strip. The two mounting strips are connected to the base through a limiting structure. Two limiting blocks are slidably connected inside the mounting strip. Two limiting grooves are opened on the base. The limiting blocks engage with the limiting grooves. A spring is fixedly connected between the mounting strip and the limiting blocks. The mounting strip and the base can be quickly connected by engaging the limiting blocks on the mounting strip with the grooves on the base, thereby quickly fixing the circuit board body. The operation is simple and flexible, and it is convenient for the later disassembly and maintenance of the circuit board. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.
[0016] Figure 3 This is a schematic diagram of the connection structure between the mounting strip and the limiting block of this utility model;
[0017] Figure 4 This is a schematic diagram of the connection structure between the fixing strip and the bolt of this utility model;
[0018] Figure 5 This is a schematic diagram of the connection structure between the heat sink and the plug of this utility model.
[0019] In the diagram: 1. Circuit board body; 2. Fixing structure; 201. Fixing strip; 202. Pressure strip; 203. Bolt; 204. Shock-absorbing pad; 205. Insert block; 206. Slot; 3. Limiting structure; 301. Limiting block; 302. Limiting groove; 303. Guide rod; 304. Spring; 305. Connecting plate; 306. Groove; 4. Base; 5. Heat sink; 6. Thermally conductive adhesive layer; 7. Mounting strip; 8. Through hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0021] Please see Figures 1-5 As shown, an easy-to-install audio amplifier circuit board without blind vias includes a circuit board body 1. Fixing structures 2 are installed at both ends of the circuit board body 1. Each fixing structure 2 includes a fixing strip 201. Two fixing strips 201 are installed on the circuit board body 1. A pressure strip 202 abuts the top of each fixing strip 201. Shock-absorbing pads 204 are installed on both the pressure strip 202 and the fixing strips 201. The two shock-absorbing pads 204 abut against the upper and lower surfaces of the circuit board body 1, respectively. The sidewalls of the fixing strips 201 are fixedly connected... The mounting strip 7 is connected to the base 4 via a limiting structure 3. The limiting structure 3 includes a limiting block 301. Two limiting blocks 301 are slidably connected inside the mounting strip 7. Two limiting grooves 302 are opened on the base 4. The limiting blocks 301 engage with the limiting grooves 302. A spring 304 is fixedly connected between the mounting strip 7 and the limiting blocks 301. The cross-section of the fixing strip 201 is "L" shaped. The base 4 is "U" shaped. Multiple through holes 8 are opened on the circuit board body 1.
[0022] As a technical optimization of this utility model, both ends of the heat sink 5 are fixedly connected with insert blocks 205, and the fixing strip 201 is provided with a slot 206. The insert blocks 205 are inserted into the slots 206. By inserting the insert blocks 205 on the heat sink 5 into the slots 206 on the fixing strip 201, the fixing strip 201 can be quickly positioned, so that the fixing strip 201 is aligned with the circuit board body 1. This facilitates the subsequent use of bolts 203 to firmly connect the pressure strip 202, the fixing strip 201 and the circuit board body 1. The pressure strip 202 is rotatably connected with bolts 203. The bolts 203 are slidably connected to the circuit board body 1. The bottom end of the bolts 203 is threadedly connected to the fixing strip 201. By rotating and tightening the bolts 203, the pressure strip 202 and the fixing strip 201 clamp the circuit board body 1, thereby achieving a stable fixation of the circuit board body 1.
[0023] As a technical optimization of this utility model, the limiting block 301 has an overall "L" shape structure, and the end of the limiting block 301 has a trapezoidal structure that guides the limiting block 301, making it easy for the limiting block 301 to slide quickly and accurately into the limiting groove 302 on the base 4, thereby realizing the quick engagement and stable connection between the mounting strip 7 and the base 4. A guide rod 303 is fixedly connected to the limiting block 301, and the guide rod 303 is slidably connected to the mounting strip 7. When the limiting block 301 slides, it drives the guide rod 303 to slide within the mounting strip 7. The guide rod 303 can play a guiding role to ensure that the sliding direction of the limiting block 301 is accurate. A connecting plate 305 is fixedly connected to the top of the limiting block 301. A groove 306 is provided on the connecting plate 305. By inserting the fingertip into the groove 306, the limiting block 301 can be easily pulled to realize the quick separation of the limiting block 301 from the limiting groove 302 on the base 4, which facilitates the disassembly and maintenance of the circuit board body 1.
[0024] As a technical optimization of this utility model, a heat sink 5 is installed at the bottom of the circuit board body 1 by screws, which improves the heat dissipation effect of the circuit board body 1. A thermally conductive adhesive layer 6 is provided between the heat sink 5 and the circuit board body 1. The thermally conductive adhesive layer 6 between the circuit board body 1 and the heat sink 5 can efficiently conduct heat to the heat sink 5, which can quickly reduce the temperature of the circuit board body 1, thereby improving the stability and service life of the circuit board body 1.
[0025] In use, this invention first involves applying a thermally conductive adhesive layer 6 to the bottom of the circuit board body 1 when installing the heat sink 5. This layer effectively transfers the heat generated by the circuit board body 1 to the heat sink 5, improving heat dissipation efficiency. Then, screws are used to install the heat sink 5 to the bottom of the circuit board body 1, ensuring a tight fit between the heat sink 5 and the circuit board body 1. The heat sink 5 provides good heat dissipation for the circuit board body 1. Next, two fixing strips 201 are installed sequentially. The slots 206 on the fixing strips 201 are aligned with the inserts 205 on the heat sink 5. The fixing strips 201 are then pushed towards the heat sink 5 until the slots 206 and inserts 205 are engaged, thus quickly and initially positioning the fixing strips 201. Align the screw holes on the fixing strip 201 with the mounting holes on the circuit board body 1. Then, insert the bolt 203 through the pressure strip 202 and move the pressure strip 202 downwards so that the bolt 203 passes through the mounting holes on the circuit board body 1. Tighten the bolt 203 and thread the bottom end of the bolt 203 onto the fixing strip 201. This allows the fixing strip 201 and the pressure strip 202 to clamp the circuit board body 1, thus more firmly fixing the circuit board body 1 to the fixing strip 201. At this time, the shock-absorbing pads 204 installed on the pressure strip 202 and the fixing strip 201 will respectively closely abut against the upper and lower surfaces of the circuit board body 1, forming an effective buffer structure that can reduce the impact of external vibrations on the circuit board body 1. Then, the two... The mounting strips 7 on the sidewalls of the fixing strip 201 are respectively connected to the two bases 4 on the chassis. During operation, the two mounting strips 7 are aligned with the two bases 4 respectively, and then the mounting strips 7 are pressed down to move into the slots on the bases 4. During the movement, when the limiting blocks 301 at both ends of the mounting strip 7 contact the sidewalls of the bases 4, the bases 4 slide inward against the limiting blocks 301. During the sliding of the limiting blocks 301, the driving spring 304 is compressed, continuously pressing the mounting strip 7. When the limiting blocks 301 are aligned with the limiting grooves 302 on the bases 4, the spring 304 resets and drives the limiting blocks 301 to engage with the limiting grooves 302, thereby quickly fixing the mounting strips 7 and thus firmly securing the circuit board body 1. Mounted on the chassis, it is simple and flexible to operate, while also increasing the stability of the circuit board body 1. When the circuit board body 1 malfunctions and needs to be disassembled for repair, insert your index finger and thumb into the groove 306 on the connecting plate 305, and then pull the connecting plate 305 towards the middle of the mounting strip 7. This causes the connecting plate 305 to move towards the middle of the mounting strip 7, while simultaneously causing the limiting block 301 to slide away from the limiting groove 302. This allows the limiting block 301 to quickly disengage from the limiting groove 302, thereby quickly contacting the limiting of the mounting strip 7 and the circuit board body 1, making the disassembly of the circuit board body 1 more convenient. By setting through holes 8 on the circuit board body 1, electrical connections can be made on both sides of the circuit board body 1, facilitating the passage of electronic component pins or wires.
[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A circuit board for easy installation of an audio power amplifier circuit without blind vias, comprising a circuit board body (1), characterized in that: A fixing structure (2) is installed at both ends of the circuit board body (1). The fixing structure (2) includes a fixing strip (201). Two fixing strips (201) are installed on the circuit board body (1). The top of the fixing strip (201) abuts against a pressure strip (202). Shock-absorbing pads (204) are installed on both the pressure strip (202) and the fixing strip (201). The two shock-absorbing pads (204) abut against the upper and lower surfaces of the circuit board body (1) respectively. An installation device is fixedly connected to the side wall of the fixing strip (201). Mounting strips (7), two mounting strips (7) are connected to the base (4) through a limiting structure (3). The limiting structure (3) includes a limiting block (301). Two limiting blocks (301) are slidably connected inside the mounting strips (7). Two limiting grooves (302) are opened on the base (4). The limiting blocks (301) and the limiting grooves (302) are engaged. A spring (304) is fixedly connected between the mounting strips (7) and the limiting blocks (301). Multiple through holes (8) are opened on the circuit board body (1).
2. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 1, characterized in that: A bolt (203) is rotatably connected to the pressure strip (202), the bolt (203) is slidably connected to the circuit board body (1), and the bottom end of the bolt (203) is threadedly connected to the fixing strip (201).
3. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 2, characterized in that: The cross-section of the fixing strip (201) is "L" shaped, and the base (4) is "U" shaped.
4. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 1, characterized in that: The limiting block (301) has an overall "L" shaped structure, and the ends of the limiting block (301) have a trapezoidal structure.
5. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 4, characterized in that: A guide rod (303) is fixedly connected to the limiting block (301), and the guide rod (303) is slidably connected to the mounting strip (7).
6. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 5, characterized in that: The top end of the limiting block (301) is fixedly connected to a connecting plate (305), and the connecting plate (305) has a groove (306).
7. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 1, characterized in that: The bottom end of the circuit board body (1) is fitted with a heat sink (5) by screws, and a thermally conductive adhesive layer (6) is provided between the heat sink (5) and the circuit board body (1).
8. The easy-to-install audio power amplifier circuit circuit without blind vias according to claim 7, characterized in that: Both ends of the heat sink (5) are fixedly connected with plugs (205), and the fixing strip (201) has a slot (206) and the plugs (205) are inserted into the slots (206).