PCB lamp panel structure
By introducing limiting plates, mating slots, assembly blocks, and guide pillars into the PCB lamp board structure, the problem of reverse installation of LED beads is solved, achieving efficient and stable assembly and fixing, and reducing production costs and labor intensity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 佛山市国励电子科技有限公司
- Filing Date
- 2025-08-30
- Publication Date
- 2026-06-23
AI Technical Summary
The existing PCB lamp board structure is prone to LED beads being installed in reverse due to human error during assembly, which can cause short circuits or functional failures, affecting product quality and production costs.
The structure adopts a design that includes limiting plates, mating grooves, assembly blocks, round guide pillars, and square guide pillars. It uses physical interference to constrain the assembly direction of the LED beads, achieving initial positioning and preventing reverse assembly. Stable fixation is achieved through the cooperation of the cover plate and positioning components.
This effectively avoids reverse installation of LED beads, reduces quality inspection time, reduces material waste, lowers production costs, and improves assembly efficiency and positioning accuracy.
Smart Images
Figure CN224397699U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB lamp board technology, specifically a PCB lamp board structure. Background Technology
[0002] With the rapid development of LED lighting technology, PCB boards, as the core components of LED lamps, directly affect production costs and product quality due to their assembly efficiency and connection reliability. To achieve rapid assembly and disassembly of LED chips and PCB substrates, existing technologies have developed PCB board structures employing magnetic attraction principles. A Chinese utility model patent (publication number: CN219999688U) discloses a PCB board with magnetic attraction. This magnetically attracted PCB board facilitates the individual assembly and disassembly of the LED chip body, while also improving the fixing effect, increasing work efficiency, and reducing usage costs.
[0003] However, the above-mentioned device still has some shortcomings in use. Specifically, the existing structure only achieves preliminary positioning through magnetic adsorption. During assembly, the relative positions of the two magnets need to be manually calibrated by visual inspection to ensure that the positive and negative poles are aligned. In actual operation, it is easy to cause the LED lamp bead body to be installed in reverse due to negligence, resulting in short circuit or functional failure, which is not conducive to improving product quality. Therefore, a PCB lamp board structure is proposed to address the above situation. Utility Model Content
[0004] The purpose of this utility model is to provide a PCB lamp board structure. Through the design of structures such as limiting plates, mating grooves, assembly blocks, round guide pillars and square guide pillars, physical interference is used to constrain the assembly direction of the LED lamp bead body. At the same time, the initial limiting of the LED lamp bead body is achieved, so that it cannot be attached or adsorbed when assembled in reverse. This solves the problem that reverse installation of the LED lamp bead body causes short circuits or functional failures, which is not conducive to improving product quality.
[0005] This utility model is achieved through the following technical solution:
[0006] This utility model is a PCB lamp board structure, including a PCB board body and an LED lamp bead body. The PCB board body is provided with an installation mechanism, and the LED lamp bead body is provided with a mating mechanism.
[0007] The installation mechanism includes two limit plates, each with a mating groove. A cover plate is hinged to the top of the limit plate, and positioning components are provided at both ends of the cover plate.
[0008] Assembly blocks are fixed on both sides of the outer wall of the LED bead body. A pair of positioning blocks are fixed at both ends of the top of the LED bead body. Positioning holes are opened on the positioning blocks. When the LED bead body is assembled on the PCB board body, the assembly blocks are fitted in the mating groove. After the cover plate is rotated, it covers the top of the LED bead body. One end of the positioning component extends into the positioning hole.
[0009] Furthermore, the positioning component includes circular grooves respectively opened on both sides of the cover plate, and a sliding groove connected to the circular groove is opened on the surface of the cover plate. A positioning post is fitted inside the circular groove with a gap. A spring is fixed to one end of the positioning post, and the other end of the spring is fixed to the inner wall of the circular groove. A lever is fixed to the outer wall of the positioning post, and the lever passes through the sliding groove and slides along the sliding groove.
[0010] Furthermore, the mounting mechanism also includes two round guide posts and a square guide post fixed to the top of the PCB board body. Two side plates are fixed to the top of the PCB board body at one end perpendicular to the limiting plate. The two limiting plates and the side plates cooperate to form a rectangular cavity for assembling the LED lamp bead body.
[0011] Furthermore, round holes are provided at two corners of the LED lamp bead body, and square holes are provided at the other two corners. The round holes slide in conjunction with the round guide posts, and the square holes slide in conjunction with the square guide posts.
[0012] Furthermore, the distance between two connected positioning blocks is the same as the distance between the two side walls of the cover plate, and a rubber pad is provided on the surface of the cover plate.
[0013] This utility model has the following beneficial effects:
[0014] This utility model, through the design of structures such as limiting plates, mating grooves, assembly blocks, round guide pillars, and square guide pillars, uses physical interference to constrain the assembly direction of the LED bead body during use, while simultaneously achieving preliminary positioning of the LED bead body. This prevents the LED from being properly fitted or adsorbed during reverse assembly, structurally solving the problem of reversed positive and negative terminals. This reduces quality inspection time, minimizes material waste caused by short circuits or functional failures, and significantly saves production costs.
[0015] This utility model, through the structural design of a cover plate, a circular groove, a positioning post, a spring, and a positioning block, allows the cover plate to be rotated and engaged with the positioning block after the LED bead body has been initially assembled during assembly. The cover plate, after positioning, limits the LED bead body, eliminating the need for manual continuous pulling of the pull block as in the prior art, thus reducing labor intensity. Furthermore, the combination of the circular and square guide posts improves the positioning effect of the LED bead body.
[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the PCB light board structure.
[0018] Figure 2 This is a schematic diagram of the assembly structure of the PCB board body and the LED lamp bead body.
[0019] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.
[0020] Figure 4 This is a schematic diagram of the internal structure of the cover plate.
[0021] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.
[0022] In the diagram: 1. PCB board body; 10. Round guide post; 11. Square guide post; 12. Limiting plate; 120. Mating groove; 13. Cover plate; 130. Round groove; 131. Sliding groove; 132. Positioning post; 133. Toggle lever; 134. Spring; 2. LED bead body; 20. Round hole; 21. Square hole; 22. Assembly block; 23. Positioning block; 230. Positioning hole. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-5 This utility model provides a technical solution: a PCB lamp board structure, including a PCB board body 1 and an LED lamp bead body 2, wherein the PCB board body 1 is provided with an installation mechanism and the LED lamp bead body 2 is provided with a mating mechanism.
[0025] The PCB board body 1 uses an FR-4 fiberglass substrate (1.6mm thick, a standard thickness suitable for most lighting scenarios), and its surface is printed with conductive lines and pads that match the LED bead body 2.
[0026] The outer shell of the LED bead body 2 is made of flame-retardant PBT material (temperature resistance ≥200℃, suitable for high-temperature soldering), and the surface has through holes corresponding to the solder pads of the PCB body 1.
[0027] The installation mechanism includes two limit plates 12. Each limit plate 12 has a mating groove 120. A cover plate 13 is hinged to the top of the limit plate 12. Positioning components are provided at both ends of the cover plate 13.
[0028] The mounting mechanism also includes two round guide posts 10 and a square guide post 11 fixed on the top of the PCB board body 1. Two side plates are fixed on the top of the PCB board body 1 at one end perpendicular to the limiting plate 12. The two limiting plates 12 and the side plates cooperate to form a rectangular cavity for the assembly of the LED lamp bead body 2.
[0029] The cover plate 13 is made of transparent PC material and is hinged to the top of the limiting plate 12 via a hinge. After covering the main body of the LED bead, the rear edge extends beyond the rectangular cavity, thereby limiting the LED bead body 2. It corresponds to the non-light-emitting area at the top of the LED bead body, thus preventing damage to the LED bead when the cover plate 13 is pressed down.
[0030] The positioning assembly includes circular grooves 130 respectively opened on both sides of the cover plate 13. A sliding groove 131 communicating with the circular grooves 130 is opened on the surface of the cover plate 13. A positioning post 132 is fitted inside the circular groove 130 with a clearance. The end of the positioning post 132 extending out of the circular groove 130 is hemispherical. A spring 134 is fixed to one end of the positioning post 132. One end of the spring 134 is fixed to the inner wall of the circular groove 130. A lever 133 is fixed to the outer wall of the positioning post 132. The lever 133 passes through the sliding groove 131 and slides along the sliding groove 131.
[0031] Assembly blocks 22 are fixed on both sides of the outer wall of the LED lamp bead body 2. A pair of positioning blocks 23 are fixed at both ends of the top of the LED lamp bead body 2. Positioning holes 230 are opened on the positioning blocks 23. When the LED lamp bead body 2 is assembled on the PCB board body 1, the assembly blocks 22 are fitted in the mating groove 120. After the cover plate 13 is rotated, it covers the top of the LED lamp bead body 2. One end of the positioning component extends into the positioning hole 230.
[0032] The LED bead body 2 has two round holes 20 at its two corners and two square holes 21 at its other two corners. The round holes 20 are slidably engaged with the round guide post 10, and the square holes 21 are slidably engaged with the square guide post 11.
[0033] The distance between the two connected positioning blocks 23 is the same as the distance between the two side walls of the cover plate 13, and a rubber pad is provided on the surface of the cover plate 13.
[0034] When using the above structure:
[0035] Before assembly, the operator holds the LED bead body 2 and aligns the round hole 20 at its corner with the round guide post 10 on the PCB board body 1, and the square hole 2 with the square guide post 11. Because the guide post and the hole are asymmetrically matched, if the LED bead body is reversed (round hole aligned with square guide post, square hole aligned with round guide post), it will be unable to be inserted due to shape interference. This completely avoids the problem of reverse assembly of positive and negative poles from the structure. After confirming that the direction is correct, the LED bead body is lowered vertically along the guide post until its bottom is attached to the surface of the PCB board body 1, thus completing the pre-positioning.
[0036] During the lowering process of the LED bead body, the assembly blocks 22 on both sides of its outer wall will slide into the mating groove 120 of the limiting plate 12. The LED bead body is limited to the front-back and left-right displacement by the rectangular cavity enclosed by the limiting plate 12 and the side plate. At this time, the soldering through hole at the bottom of the LED bead body has been initially aligned with the PCB board pad (alignment deviation ≤ 0.1mm). It can maintain stability without continuous manual support, greatly reducing the intensity of operation.
[0037] The operator flips the cover plate 13 upwards (rotating around the hinge) to cover the top of the LED bead body 2. The rubber pad on the surface of the cover plate 13 fits against the non-light-emitting area of the LED bead body to avoid damage from hard contact. At the same time, the positioning posts 132 on both sides of the cover plate 13 (extending from the circular groove in the natural state) will align with the positioning holes 230 on the top of the LED bead body. When the cover plate is fully closed, the hemispherical end of the positioning post 132 is squeezed by the positioning block 23, automatically compressing the spring 134 and sliding into the positioning hole 230. After the spring returns to its original position, it pushes the positioning post 132 to fit tightly against the wall of the positioning hole, forming an axial lock. At this time, the LED bead body is completely fixed, and the soldering through hole is further aligned with the PCB board pad.
[0038] To disassemble the LED bead body, simply use your finger to move the lever 133 on the cover plate, causing it to slide inward along the sliding groove 131. This will cause the positioning post 132 to compress the spring and disengage from the positioning hole 230. After flipping the cover plate upward, the LED bead body can be pulled out along the guide post, allowing for individual disassembly and assembly.
[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A PCB lamp board structure, comprising a PCB board body (1) and an LED lamp bead body (2), wherein the PCB board body (1) is provided with an mounting mechanism and the LED lamp bead body (2) is provided with a mating mechanism, characterized in that: The installation mechanism includes a limiting plate (12), there are two limiting plates (12), the limiting plate (12) is provided with a mating groove (120), the top of the limiting plate (12) is hinged with a cover plate (13), and both ends of the cover plate (13) are provided with positioning components; Assembly blocks (22) are fixed on both sides of the outer wall of the LED lamp bead body (2). A pair of positioning blocks (23) are fixed at both ends of the top of the LED lamp bead body (2). Positioning holes (230) are opened on the positioning blocks (23). When the LED lamp bead body (2) is assembled on the PCB board body (1), the assembly blocks (22) are fitted in the mating groove (120). After the cover plate (13) rotates, it covers the top of the LED lamp bead body (2). One end of the positioning component extends into the positioning hole (230).
2. The PCB lamp board structure according to claim 1, characterized in that, The positioning component includes circular grooves (130) respectively opened on both sides of the cover plate (13). The surface of the cover plate (13) is provided with a sliding groove (131) that communicates with the circular grooves (130). A positioning post (132) is fitted inside the circular groove (130). A spring (134) is fixed to one end of the positioning post (132). One end of the spring (134) is fixed to the inner wall of the circular groove (130). A lever (133) is fixed to the outer wall of the positioning post (132). The lever (133) passes through the sliding groove (131) and slides along the sliding groove (131).
3. The PCB lamp board structure according to claim 1, characterized in that, The mounting mechanism also includes two round guide posts (10) and square guide posts (11) fixed on the top of the PCB board body (1). Two side plates are fixed on the top of the PCB board body (1) at one end perpendicular to the limiting plate (12). The two limiting plates (12) and the side plates cooperate to form a rectangular cavity for the assembly of the LED lamp bead body (2).
4. The PCB lamp board structure according to claim 3, characterized in that, The LED lamp bead body (2) has round holes (20) at two corners and square holes (21) at the other two corners. The round holes (20) are slidably engaged with the round guide post (10) and the square holes (21) are slidably engaged with the square guide post (11).
5. A PCB lamp board structure according to claim 1, characterized in that, The distance between the two connected positioning blocks (23) is the same as the distance between the two side walls of the cover plate (13), and the surface of the cover plate (13) is provided with a rubber pad.