A connecting structure and LED lamp strip

Abstract

This utility model discloses a connection structure and an LED light strip. The connection structure includes an insulating substrate and several elastic conductive elements. The insulating substrate has a plug-in end and an internal mounting cavity and plug-in hole. The elastic conductive elements include a base, a spring portion, and a crimping portion. The base is fixedly installed inside the mounting cavity, and the crimping portion is movably disposed outside the mounting cavity. When a wire is inserted into the mounting cavity through the plug-in hole, the crimping portion can be pressed down to lock the wire and form an electrical connection with it. The spring portion extends from the base to the outside of the plug-in end and at least partially protrudes beyond the plug-in end. When the plug-in end is inserted into the LED light strip's receiving cavity, it forms an interference fit with the receiving cavity to achieve mechanical locking, and simultaneously forms an electrical connection with the conductive part of the LED light strip. The spring portion and the crimping portion are electrically connected. This utility model aims to solve the problems of complex welding operations and the need for secondary welding of wires in traditional LED light strip connections.

Description

Technical Field

[0001] This utility model relates to the field of LED light strip technology, and in particular to a connection structure and an LED light strip. Background Technology

[0002] In the field of LED lighting technology, LED linear light strips are widely used in decorative lighting, landscape lighting, and other scenarios due to their uniform light emission and flexible installation. Currently, the conductive connections of LED linear light strips are typically achieved through welding, which involves soldering external conductors to the conductive parts of the light strip body to establish a current transmission path.

[0003] However, this welding connection method has significant drawbacks: Firstly, welding operations require a high level of skill from the operators, necessitating specialized tools and extensive experience to ensure welding quality. Otherwise, issues such as incomplete welds or detachment can easily occur, leading to unstable light emission or even complete malfunction of the LED strip. Secondly, in practical applications, due to varying installation site dimensions, the LED strip must first be cut to the appropriate length, followed by secondary welding of the wires. This process is cumbersome and time-consuming, significantly impacting installation efficiency. Furthermore, the welding connection makes subsequent maintenance and disassembly more difficult. If the LED strip or wires malfunction, the weld points must be damaged for replacement, increasing maintenance costs and potentially causing secondary damage to the LED strip itself, thus reducing product lifespan. Utility Model Content

[0004] The main purpose of this utility model is to provide a connection structure and LED light strip, which aims to solve the problems of complex welding connection operations and the need for secondary welding of wires in traditional LED light strips.

[0005] To achieve the above objectives, the present invention proposes a connection structure for LED light strips, comprising:

[0006] An insulating substrate has a plug-in end that can be inserted into an LED strip receiving cavity, and the insulating substrate has a plurality of mounting cavities and plug-in holes communicating with the mounting cavities for inserting wires; and

[0007] Several elastic conductive components, including a base, a spring portion, and a crimping portion,

[0008] The base is fixedly installed inside the mounting cavity for limiting and fixing.

[0009] The crimping part is movably disposed outside the mounting cavity, so that when the wire is inserted into the mounting cavity through the plug hole, the crimping part can be pressed down to lock the wire and form an electrical connection with it;

[0010] The spring plate extends from the base to the outside of the plug end, and at least partially protrudes beyond the plug end. When the plug end is inserted into the LED light strip receiving cavity, the spring plate is squeezed by the inner wall of the receiving cavity to generate elastic deformation, so as to form an interference fit with the receiving cavity to achieve mechanical locking. At the same time, it forms an electrical connection with the conductive part of the LED light strip, and the spring plate and the pressing part are electrically connected.

[0011] In one possible implementation, the base, the spring plate portion, and the press-fit portion are integrally formed.

[0012] In one possible implementation, the end of the crimping portion facing the insertion hole is provided with conductive teeth, which are used to pierce the insulation layer of the wire when pressed down, and form an electrical connection with the wire core.

[0013] In one possible implementation, the inner wall of the mounting cavity is provided with a locking protrusion, and the pressing part is provided with a locking groove corresponding to the locking protrusion; when the pressing part is pressed down into place, the locking protrusion and the locking groove form a mechanical interlock.

[0014] In one possible implementation, a light-transmitting groove extending along the insertion direction is provided in the middle of the insulating substrate. The light-transmitting groove penetrates the insertion end face of the insulating substrate and is spaced apart from the mounting cavity. This is used to avoid the light-emitting unit in the middle area of ​​the LED strip when the connecting structure is inserted into the LED strip receiving cavity.

[0015] In one possible implementation, the inner wall of the mounting cavity is provided with a limiting groove that is adapted to the base, and the base is fixed by being inserted into the limiting groove.

[0016] In one possible implementation, a limiting block is provided inside the mounting cavity, the limiting block being located at the midpoint between the base and the crimping portion, to prevent the inserted wire from moving excessively forward.

[0017] To achieve the above objectives, this utility model also provides an LED light strip, including the connection structure described in any of the above possible embodiments, and further including:

[0018] A light guide sleeve having a receiving cavity that extends along the length direction and is adapted to the connecting structure;

[0019] The light strip body includes a base strip, light-emitting units arranged on the end face of the base strip, and conductive connecting portions distributed on both sides of the light-emitting units and extending along the length of the base strip. The conductive connecting portions are electrically connected to the light-emitting units.

[0020] When the connecting structure is inserted into the receiving cavity, the conductive connecting part can form an electrical connection with its spring part, so that the light-emitting unit can be powered on and emit light.

[0021] In one possible implementation, the light guide sleeve includes a light-transmitting layer and a light-blocking layer. The light-blocking layer partially covers the outer surface of the light-transmitting layer and forms a light-emitting surface with the side. The light-emitting surface has an arc-shaped structure.

[0022] The technical solution of this utility model has the following advantages:

[0023] 1. By setting up a connection structure composed of an insulating substrate and conductive elastic elements, electrical connection and mechanical fixation between the wire and the LED light strip can be completed without welding. This solves the problems of traditional LED light strips relying on welding connections, complex operation, and difficult maintenance and disassembly. Furthermore, it supports free customization of the wire length, meaning users can cut the wire to the required length according to the wiring needs of the installation site and directly insert it into the connector hole for fixation. Simultaneously, the interference fit of the spring section achieves mechanical locking, and the crimping section clamps the wire to form a stable electrical connection, significantly improving the connection structure's resistance to vibration and tension, and preventing poor contact.

[0024] 2. By using a housing cavity with an adaptive connection structure for the light guide sleeve, and a light-emitting unit with a conductive connection part in the light strip body, the precise docking and stable electrical conduction between the connection structure and the light strip are achieved, solving the problems of easy loosening and unstable light emission after traditional light strip connection. In addition, the light guide sleeve uses a light-transmitting layer and a light-blocking layer to form an arc-shaped light-emitting surface, so that the light is softer and more uniform after diffuse reflection and refraction, avoiding direct glare. At the same time, the uninterrupted copper foil ensures that the two ends can still maintain a complete conductive path after cutting, so that the connection structure can achieve a stable electrical connection at any cutting position without the need for additional solder joint treatment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of the subject matter of this utility model;

[0027] Figure 2 This is a side view of subject matter one of this utility model;

[0028] Figure 3 This is a cross-sectional view of the pressing part of this utility model when it is not pressed down;

[0029] Figure 4 This is a cross-sectional view of the pressing part of this utility model when it is pressed down;

[0030] Figure 5This is a schematic diagram of the structure of the mounting cavity of the present invention.

[0031] Figure 6 This is a structural schematic diagram of the elastic conductive component of this utility model.

[0032] Figure 7 This is a structural schematic diagram of an embodiment of the LED light strip of this utility model.

[0033] Figure 8 This is a schematic diagram of the structure of the light strip body according to a second embodiment of the present utility model.

[0034] Explanation of icon numbers:

[0035] 1. Insulating substrate; 11. Plug-in end; 12. Mounting cavity; 13. Plug-in hole; 2. Elastic conductive element; 21. Base; 22. Spring part; 23. Crimping part; 231. Conductive clamping tooth; 24. Light transmission groove; 3. Engaging protrusion; 4. Limiting groove; 5. Limiting block; 6. LED light strip; 61. Light guide sleeve; 611. Receiving cavity; 612. Light transmission layer; 613. Light blocking layer; 62. Light strip body; 621. Base strip; 622. Light-emitting unit; 623. Conductive connection part; 63. Light-emitting surface.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0038] To address the problems in the background technology, this utility model proposes a connection structure, comprising:

[0039] An insulating substrate 1 has a plug-in end 11 into which an LED light strip 6 can be inserted into a receiving cavity 611, and the insulating substrate 1 has a plurality of mounting cavities 12 and plug-in holes 13 communicating with the mounting cavities 12 for inserting wires; and

[0040] Several elastic conductive elements 2, including a base 21, a spring portion 22, and a crimping portion 23,

[0041] The base 21 is fixedly installed inside the mounting cavity 12 for limiting and fixing.

[0042] The crimping part 23 is movably disposed outside the mounting cavity 12, so that when the wire is inserted into the mounting cavity 12 through the plug hole 13, the crimping part 23 can be pressed down to lock the wire and form an electrical connection with it.

[0043] The spring piece 22 extends from the base 21 toward the outside of the plug-in end 11 and at least partially protrudes from the plug-in end 11. When the plug-in end 11 is inserted into the LED light strip 6 receiving cavity 611, the spring piece 22 is squeezed by the inner wall of the receiving cavity 611 to generate elastic deformation, so as to form an interference fit with the receiving cavity 611 to achieve mechanical locking. At the same time, it forms an electrical connection with the conductive part of the LED light strip 6, and the spring piece 22 and the crimping part 23 are electrically connected.

[0044] This application's connection structure is mainly used in LED light strip 6 connection scenarios, aiming to solve the problem of complex operation and wire soldering required for traditional LED light strip 6 connection. Its core consists of an insulating substrate 1 and several elastic conductive components 2. Specific implementation details of each part are as follows:

[0045] refer to Figures 1 to 6 As shown, in this embodiment, the insulating substrate 1 serves as the basic component for support and protection, and has a plug-in end 11 that can be inserted into the receiving cavity 611 of the LED light strip 6, adapting to the installation space of the LED light strip 6. The insulating substrate 1 has several mounting cavities 12 formed inside to accommodate the elastic conductive element 2; and is provided with plug-in holes 13 communicating with the mounting cavities 12 for wire insertion. The insulating substrate 1 is made of engineering plastics (such as polycarbonate or ABS) with good insulation and structural strength, and is prepared by injection molding. To match the two wires of the monochrome light strip, the connection structure in this embodiment is designed as a double-contact structure, that is, it includes two sets of mounting cavities 12, elastic conductive elements 2, and plug-in holes 13.

[0046] The elastic conductive element 2 is a key component for achieving electrical connection and mechanical locking. It includes a base 21, a spring portion 22, and a crimping portion 23. These three components can be integrally formed using a molding process (such as stamping) and made of a metal material with excellent conductivity (such as brass or phosphor bronze) to ensure good conductivity and elastic recovery. Specifically, the shape of the base 21 is adapted to the mounting cavity 12. It is fixedly installed inside the mounting cavity 12 by means of interference fit, snap-fit, or adhesive (in this embodiment, interference fit is preferred for ease of assembly, disassembly, and maintenance), which limits and fixes the entire elastic conductive element 2, ensuring its stable position within the insulating substrate 1 and providing support for the functions of the spring portion 22 and the crimping portion 23. The crimping portion 23 is movably disposed outside the mounting cavity 12, corresponding to the position of the insertion hole 13. Its initial position is floating above the mounting cavity 12. After the wire is inserted into the mounting cavity 12 through the plug hole 13, the crimping part 23 is pressed down with the help of external tools (such as tweezers or special crimping pliers). The crimping part 23 will undergo elastic deformation and make tight contact with the wire. On the one hand, the mechanical clamping force locks the wire to prevent it from falling out; on the other hand, the conductivity of the metal forms an electrical connection with the wire to realize current transmission. In actual operation, the crimping part 23 can be designed with a raised or toothed structure to enhance the contact area with the wire and the clamping stability. Even if the wire is subjected to slight pulling force, the reliability of the electrical connection can be maintained. The spring piece 22 extends from the base 21 to the outside of the plug end 11 and at least partially protrudes from the plug end 11. In its natural state, the spring piece 22 maintains a certain raised shape due to its own elasticity. When the plug end 11 is inserted into the receiving cavity 611 of the LED light strip 6, the spring piece 22 will be squeezed by the inner wall of the receiving cavity 611 and undergo elastic deformation. Because the spring piece 22 has an elastic recovery tendency, it applies a reverse force to the inner wall of the receiving cavity 611, thereby forming an interference fit with the receiving cavity 611 and achieving mechanical locking. This ensures that the connecting structure is securely inserted into the receiving cavity 611 of the LED light strip 6, making it difficult to loosen. Simultaneously, the spring piece 22 is in close contact with the conductive parts of the LED light strip 6 (such as conductive copper foil, conductive coating, etc.), utilizing the conductivity of the metal to form an electrical connection. This allows the current transmitted by the external wires to be introduced into the LED light strip 6, providing power for its illumination. Furthermore, the spring piece 22 and the pressing part 23 are electrically connected due to integrated molding or subsequent conductive connection (such as welding, riveting; in this embodiment, due to integrated molding, they are directly electrically connected), forming a current path from the wires to the spring piece 22, and then to the conductive parts of the LED light strip 6.

[0047] In summary, the workflow of this application is as follows: First, confirm the structure of the receiving cavity 611 of the LED light strip 6 and the status of each component of the connecting structure. Insert the wire into the mounting cavity 12 through the plug hole 13, aligning the wire core with the crimping part 23. Use a tool to press down the crimping part 23 to complete the locking and electrical connection of the wire. At this time, the crimping part 23 maintains stable contact with the wire, and current can be transmitted through the crimping part 23. Then, align the plug end 11 of the connecting structure with the receiving cavity 611 of the LED light strip 6 and slowly insert it. During the insertion process, the spring part 22 is deformed by the pressure of the inner wall of the receiving cavity 611, forming an interference fit with the receiving cavity 611 to achieve mechanical locking; at the same time, the spring part 22 contacts the conductive part of the LED light strip 6 to establish an electrical connection. Finally, turn on the power. If the LED light strip 6 lights normally, it indicates that the electrical connection and mechanical locking functions of the connecting structure are both normally achieved. During use, even when subjected to slight vibrations, pulling or other external forces, the connection structure can still maintain a stable connection due to the interference fit locking of the spring piece 22 and the clamping locking of the crimping part 23, ensuring the normal operation of the LED light strip 6.

[0048] This connection structure can replace welding connections, overcoming the problems of complex welding operations, high skill requirements for operators, and difficulty in subsequent maintenance and disassembly. It adopts a combination of plug-in and crimping methods, eliminating the need for professional welding equipment and skills, lowering the operating threshold, and facilitating assembly, maintenance, and replacement.

[0049] In one possible implementation, the base 21, the spring piece 22, and the pressing part 23 are integrally formed. Specifically, the base 21, the spring piece 22, and the pressing part 23 of the elastic conductive element 2 are integrally formed and are made of a metal material with good conductivity and elasticity (such as phosphor bronze, brass, etc.) through a stamping process. The base 21 serves as a load-bearing foundation, adapting to and fixing the mounting cavity 12 of the insulating substrate 1. Its shape matches the limiting structure of the inner wall of the mounting cavity 12 to ensure stable position after installation. The spring piece 22 extends from the base 21 to the outside of the insertion end 11, and in its natural state, it partially protrudes from the outer periphery of the insertion end 11. When the insertion end 11 is inserted into the receiving cavity 611 of the LED light strip 6, the spring piece 22 is compressed and undergoes elastic deformation, forming an interference fit with the receiving cavity 611 to achieve mechanical locking, while simultaneously contacting the conductive part of the light strip for conductivity. The crimping portion 23 extends from the base 21 to the outside of the mounting cavity 12 and is movable at the corresponding position of the insertion hole 13. After the wire is inserted, pressing down on the crimping portion 23 locks the wire in place through elastic deformation and forms an electrical connection. This one-piece molded structure solves the problems of complex assembly and conductivity being easily affected by connection gaps in traditional split conductive components.

[0050] In one possible implementation, the crimping portion 23 is provided with conductive teeth 231 at one end facing the insertion hole 13. The conductive teeth 231 are used to pierce the insulation layer of the wire when pressed down, and form an electrical connection with the wire core.

[0051] refer to Figure 6 As shown, in this embodiment, the end of the crimping part 23 facing the insertion hole 13 is equipped with conductive clips 231. These conductive clips 231 and the crimping part 23 are integrally formed, made of a metal material with good conductivity, and are arranged to accommodate wire insertion. The ends of the conductive clips 231 are sharp and angled, with the tooth tip dimensions designed based on the common wire insulation thickness and core specifications. When the wire is inserted into the mounting cavity 12 through the insertion hole 13, external force presses down on the crimping part 23. The conductive clips 231 move towards the wire direction with the elastic deformation of the crimping part 23, piercing the insulation layer of the wire with their sharp teeth, thus making tight contact with the wire core and establishing a stable electrical connection path. This structure effectively solves the cumbersome problem of manually stripping the wire insulation layer when wiring traditional LED light strips 6, eliminating the need for additional tools, simplifying the installation process, and lowering the operational threshold.

[0052] In one possible implementation, the inner wall of the mounting cavity 12 is provided with a locking protrusion 3, and the pressing part 23 is provided with a locking groove corresponding to the locking protrusion 3; when the pressing part 23 is pressed down into place, the locking protrusion 3 and the locking groove form a mechanical interlock.

[0053] refer to Figure 5 and Figure 6 As shown, in this embodiment, a plurality of engaging protrusions 3 are provided on the inner wall of the mounting cavity 12. These engaging protrusions 3 are integrally formed during the injection molding of the mounting cavity 12. Correspondingly, the crimping part 23 is provided with a groove that matches the engaging protrusions 3. The groove is made by stamping or cutting the crimping part 23. The shapes of the two are compatible, enabling precise fitting. When the wire crimping operation is performed, and the crimping part 23 is pressed into place, that is, when the crimping part 23 has completed the crimping action on the wire and formed a stable electrical connection with the wire, the engaging protrusions 3 on the inner wall of the mounting cavity 12 will precisely engage in the groove of the crimping part 23, thereby forming a mechanical interlocking structure. This mechanical interlocking structure can effectively restrict the return movement of the crimping part 23, so that the crimping part 23 is firmly held in the crimped position, continuously applying pressure to the wire, and ensuring the stability and reliability of the electrical connection.

[0054] In one possible implementation, a light-transmitting groove 24 extending along the insertion direction is provided in the middle position of the insulating substrate 1. The light-transmitting groove 24 penetrates the end face of the insertion end 11 of the insulating substrate 1 and is spaced apart from the mounting cavity 12. It is used to avoid the light-emitting unit 622 in the middle area of ​​the LED light strip 6 when the connecting structure is inserted into the LED light strip 6 receiving cavity 611.

[0055] refer to Figure 1As shown, in this embodiment, a light-transmitting groove 24 extending along the insertion direction is constructed in the middle position of the insulating substrate 1. The light-transmitting groove 24 penetrates the end face of the insertion end 11 of the insulating substrate 1 and is spaced apart from each mounting cavity 12 inside the insulating substrate 1, and the two are not interconnected. The cross-sectional shape and size of the light-transmitting groove 24 are adapted to the layout of the light-emitting unit 622 in the middle area of ​​the LED light strip 6, and its length extends to match the length of the insertion end 11 of the insulating substrate 1.

[0056] When the connector 11 of the connecting structure is inserted into the receiving cavity 611 of the LED strip 6, the light-transmitting groove 24 corresponds precisely to the position of the light-emitting unit 622 in the middle of the strip, forming a precise physical clearance space, so that the light-emitting unit 622 is completely covered by the light-transmitting groove 24. Since the insulating substrate 1 itself is a light-transmitting material, and the light-transmitting groove 24 adopts a through-type design, the light generated by the light-emitting unit 622 when it is working can directly pass through the light-transmitting groove 24 and the light-transmitting part of the insulating substrate 1 to conduct outwards, avoiding being blocked by the connecting structure. This embodiment solves the problem that the light-emitting unit 622 of the LED strip is blocked, the light output is obstructed, and the lighting brightness and uniformity are reduced because the insulating substrate 1 of the traditional connecting structure uses an opaque material or has no clearance design.

[0057] In one possible implementation, the inner wall of the mounting cavity 12 is provided with a limiting groove 4 that is adapted to the base 21, and the base 21 is fixed by being inserted into the limiting groove 4.

[0058] refer to Figure 3 As shown, in this embodiment, the base 21 is a ring-shaped elastic snap-fit ​​structure, made of conductive metal material integrally formed with the spring piece 22 and the pressing part 23, and has an overall arc-shaped contour that fits the internal slot of the mounting cavity 12. The ring-shaped opening size of the base 21 is precisely matched with the width and depth of the slot of the mounting cavity 12, and has elastic deformation capability. When assembling the elastic conductive component 2, the elasticity of the base 21 is used to slightly open its ring-shaped structure, align it with the slot on the inner wall of the mounting cavity 12, and then release it. The base 21 will then tighten the slot through elastic restoring force, achieving snap-fit ​​fixation with the mounting cavity 12, which can limit the axial and radial displacement of the base 21 within the mounting cavity 12.

[0059] In one possible implementation, a limiting block 5 is provided inside the mounting cavity 12. The limiting block 5 is located at the middle position between the base 21 and the crimping part 23 to prevent the inserted wire from moving too far forward.

[0060] refer to Figures 2 to 5As shown in this embodiment, in order to accurately control the position of the wire after it is inserted into the mounting cavity 12, a limiting block 5 is reasonably set inside the mounting cavity 12. The limiting block 5 is a raised structure integrally formed during the molding process of the mounting cavity 12, and its material is the same as that of the insulating substrate 1, which has good structural stability. The limiting block 5 is cleverly arranged in the middle position between the base 21 and the crimping part 23. Its position is designed and positioned so as to effectively block the wire inserted into the mounting cavity 12. When the wire is inserted into the mounting cavity 12 through the insertion hole 13, it will continue to move into the mounting cavity 12 under its own pushing force. The presence of the limiting block 5 can prevent the wire from moving too far forward when it moves close to the critical position where the crimping part 23 connects with the base 21. This ensures that the wire core is exactly aligned with the conductive teeth 231 (or other conductive contact structure) of the crimping part 23, so that the crimping part 23 can accurately form a stable electrical connection with the wire core during the subsequent pressing operation, avoiding problems such as wire core misalignment and poor contact caused by excessive forward movement of the wire.

[0061] To achieve the above objectives, this utility model also provides an LED light strip, including the connection structure described in any of the above possible embodiments. Since this LED light strip adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. It also includes:

[0062] The light guide sleeve 61 has a receiving cavity 611 that extends along the length direction and is adapted to the connecting structure;

[0063] The LED strip body 62 includes a base strip 621, light-emitting units 622 arranged on the end face of the base strip 621, and conductive connecting portions 623 distributed on both sides of the light-emitting units 622 and extending along the length of the base strip 621. The conductive connecting portions 623 are electrically connected to the light-emitting units 622.

[0064] When the connecting structure is inserted into the receiving cavity 611, the conductive connecting part 623 can form an electrical connection contact with its spring part 22, so that the light-emitting unit 622 is powered on and emits light.

[0065] Combined with reference Figure 7 and Figure 8As shown, in this embodiment, the LED light strip 6 of the utility model mainly consists of a connecting structure, a light guide sleeve 61, and a light strip body 62. These parts work together to achieve stable mechanical connection and electrical conduction. The connecting structure adopts the design described in any of the above possible embodiments, and its core function is to establish an electrical connection and mechanical fixation between the external wire and the LED light strip 6 body. The insertion end 11 of the insulating substrate 1 can be precisely inserted into the receiving cavity 611 of the light guide sleeve 61. The internal mounting cavity 12 is used to house the elastic conductive element 2 (base 21, spring piece 22, and crimping part 23), and the insertion hole 13 provides a channel for the insertion of the wire. The light guide sleeve 61, as the load-bearing and protective component of the light strip, is made of a material with good light transmittance and certain structural strength, such as transparent or semi-transparent polycarbonate or silicone. The receiving cavity 611, extending along its length, is adapted in size and shape to the insertion end 11 of the connecting structure, providing guidance and positioning for the insertion of the connecting structure and ensuring accurate docking between the connecting structure and the conductive connection part 623 of the light strip body 62 after insertion. At the same time, the light guide sleeve 61 can effectively protect the internal light strip body 62, reducing the impact of external dust, moisture, mechanical impact, etc. on the light strip and extending the service life of the light strip.

[0066] The LED strip body 62 is the core component for realizing the light-emitting function, consisting of a base strip 621, light-emitting units 622, and conductive connectors 623. The base strip 621 serves as the carrier for the light-emitting units 622 and the conductive connectors 623, and can be made of flexible or rigid circuit board substrate. The light-emitting units 622, using the base strip 621 as a carrier, employ surface mount technology (SMD) to solder LED chips and resistors, adopting a modular circuit design, including horizontally or vertically arranged LED chips and resistors. Distributed on both sides of the light-emitting units 622 and extending along the length of the base strip 621, conductive metal conductive layers such as conductive copper foil or aluminum foil are typically fabricated on the surface of the base strip 621 through processes such as etching and lamination. Specifically, the LED strip body 62 features uninterrupted copper foil on both sides, enabling flexible application by cutting the strip to any length. This solves the problem of limited cutting length and the need for specific cutting positions caused by segmented solder pads in traditional LED strips. Simultaneously, the uninterrupted copper foil ensures that both ends maintain a complete conductive path after cutting, allowing for stable electrical connection at any cutting position without additional solder joint processing. The conductive connection part 623 is electrically connected to the light-emitting unit 622, transmitting externally input electrical energy to drive it to emit light. When the spring piece 22 of the connection structure contacts the conductive connection part 623, a stable electrical connection path is formed, ensuring the normal operation of the light-emitting unit 622.

[0067] In one possible implementation, the light guide sleeve 61 includes a light-transmitting layer 612 and a light-blocking layer 613. The light-blocking layer 613 partially covers the outer surface of the light-transmitting layer 612 and forms a light-emitting surface 63 with the side. The light-emitting surface 63 has an arc-shaped structure.

[0068] Combined with reference Figure 8 As shown, in this embodiment, the light guide sleeve 61 consists of a light-transmitting layer 612 and a light-blocking layer 613. The light-transmitting layer 612 is integrally molded from a material with high light transmittance (such as transparent silicone or polycarbonate) to form a receiving cavity 611 for accommodating the light strip body 62, providing a transparent path for light propagation. The light-blocking layer 613 is made of an opaque material (such as white light-shielding silicone) and is partially covered on the outer surface of the light-transmitting layer 612 by injection molding or bonding processes. Its coverage area avoids one side of the light guide sleeve 61, so that this side forms a light-emitting surface 63 that is not covered by the light-blocking layer 613.

[0069] The light-emitting surface 63 preferably adopts a curved structure, with its radius of curvature optimized to match the light distribution characteristics of the light-emitting unit 622 in the light strip body 62. When the light-emitting unit 622 is powered on, the light passes through the light-transmitting layer 612 and propagates to the light-emitting surface 63. The curved structure allows for diffuse reflection and refraction of the light, ensuring that the light is emitted uniformly from the light-emitting surface 63. Alternatively, the light-emitting surface 63 can also adopt other structural forms such as a flat surface, a slightly convex surface, or a composite surface with a soft-light texture. When the light-emitting unit 622 is powered on, the light passes through the light-transmitting layer 612 and propagates to the light-emitting surface 63. Whether it's the diffuse reflection and refraction of the curved surface or the directional light emission effect of the flat surface, both ensure that the light is emitted uniformly from the light-emitting surface 63, meeting the lighting needs of different scenarios.

[0070] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0071] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A connection structure for LED light strips, characterized in that, include: An insulating substrate has a plug-in end that can be inserted into an LED strip receiving cavity, and the insulating substrate has a plurality of mounting cavities and plug-in holes communicating with the mounting cavities for inserting wires; and Several elastic conductive components, including a base, a spring portion, and a crimping portion, The base is fixedly installed inside the mounting cavity for limiting and fixing. The crimping part is movably disposed outside the mounting cavity, so that when the wire is inserted into the mounting cavity through the plug hole, the crimping part can be pressed down to lock the wire and form an electrical connection with it; The spring plate extends from the base to the outside of the plug-in end, and at least partially protrudes beyond the plug-in end. When the plug-in end is inserted into the LED light strip receiving cavity, the spring plate is squeezed by the inner wall of the receiving cavity to generate elastic deformation, so as to form an interference fit with the receiving cavity to achieve mechanical locking. At the same time, it forms an electrical connection with the conductive part of the LED light strip, and the spring plate and the pressing part are electrically connected.

2. The connection structure according to claim 1, characterized in that, The base, spring sheet, and press-fit part are integrally formed structures.

3. The connection structure according to claim 1, characterized in that, The crimping part has conductive teeth at one end facing the insertion hole. The conductive teeth are used to pierce the insulation layer of the wire when it is pressed down, and form an electrical connection with the wire core.

4. The connection structure according to claim 1, characterized in that, The inner wall of the mounting cavity is provided with a locking protrusion, and the pressing part is provided with a locking groove corresponding to the locking protrusion; when the pressing part is pressed down into place, the locking protrusion and the locking groove form a mechanical interlock.

5. The connection structure according to claim 1, characterized in that, The insulating substrate has a light-transmitting groove extending along the insertion direction in the middle position. The light-transmitting groove penetrates the insertion end face of the insulating substrate and is spaced apart from the mounting cavity. It is used to avoid the light-emitting unit in the middle area of ​​the LED strip when the connecting structure is inserted into the LED strip receiving cavity.

6. The connection structure according to claim 1, characterized in that, The inner wall of the mounting cavity is provided with a limiting groove that is adapted to the base, and the base is fixed by being inserted into the limiting groove.

7. The connection structure according to any one of claims 1 to 6, characterized in that, A limiting block is provided inside the mounting cavity. The limiting block is located at the middle position between the base and the crimping part, and is used to prevent the inserted wire from moving too far forward.

8. An LED light strip, comprising any one of the connection structures described in claims 1-7, characterized in that, Also includes: A light guide sleeve having a receiving cavity that extends along the length direction and is adapted to the connecting structure; The light strip body includes a base strip, light-emitting units arranged on the end face of the base strip, and conductive connecting portions distributed on both sides of the light-emitting units and extending along the length of the base strip. The conductive connecting portions are electrically connected to the light-emitting units. When the connecting structure is inserted into the receiving cavity, the conductive connecting part can form an electrical connection with its spring part, so that the light-emitting unit can be powered on and emit light.

9. The LED light strip according to claim 8, characterized in that, The light guide sleeve includes a light-transmitting layer and a light-blocking layer. The light-blocking layer partially covers the outer surface of the light-transmitting layer and forms a light-emitting surface with the side. The light-emitting surface has an arc structure.

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