Power supply connecting structure of LED lamp strip

Abstract

The utility model discloses a power supply connecting structure of an LED lamp strip, which comprises the LED lamp strip, a connecting piece, a fastening sleeve and a power line, a circuit board is arranged in the LED lamp strip, an electric shock terminal is arranged on the circuit board, the connecting piece comprises a lamp strip groove and a power supply shell, a bottom plate and a side wall of the lamp strip groove are connected with the power supply shell, the side plate and the bottom plate are separated from each other in the lamp strip groove, and the power line is connected with the power supply shell. A wiring terminal and an electric conductor which is electrically connected with the wiring terminal and extends to the lamp strip groove are arranged in the power source shell, and a wiring hole is formed in the wiring terminal. The LED lamp strip is installed in the lamp strip groove, an electric shock terminal of the LED lamp strip is electrically connected with the electric conductor, the power line is fixed in a wiring hole of the wiring terminal, and the fastening sleeve is connected to the lamp strip groove in a sleeved mode so that the two side walls of the lamp strip groove can be in interference fit with the outer skin of the LED lamp strip. The utility model has the advantages of low manufacturing cost, simple installation, low potential safety hazard, small product volume, neat and beautiful appearance and the like.

Description

Technical Field

[0001] This utility model relates to a lighting fixture, specifically disclosing the power connection structure of an LED light strip. Background Technology

[0002] refer to Figure 8 The existing power connector for high-voltage LED light strips includes a power cord 01, with a light strip connector 02 at one end and a plug 03 at the other end. A circuit board 04 is located in the middle of the power cord, and a bridge rectifier 05 is mounted on the circuit board 04. A power housing 06, integrally formed with the outer sheath of the power cord 01, is also injection molded around the circuit board 04. The light strip connector is used to connect the LED light strip, and the plug is used to connect to a socket for mains power. As the application scenarios for LED light strips become increasingly widespread, in many situations, the plug 03 needs to be cut off, and an additional power cord needs to be connected to a switch. The connection point must be insulated with electrical tape. Therefore, the existing LED light strip connector has disadvantages such as inconvenient installation and potential leakage risks. Furthermore, the injection-molded power housing 06 on the power cord results in complex manufacturing processes, large size, and irregular shape. Utility Model Content

[0003] Therefore, it is necessary to provide a power connection structure for LED light strips that is easy to install, has no safety hazards, is simple to manufacture, and has a small size and neat appearance, in response to the existing technical problems.

[0004] To address the problems of existing technologies, this utility model discloses a power connection structure for an LED light strip, including an LED light strip, a power connection assembly, and a power cord for connecting to an external power source. The LED light strip includes a circuit board, LED beads and contact terminals disposed on the circuit board, and a flexible outer sheath covering the circuit board. The power connection assembly includes a connector and a fastening sleeve. The connector includes a light strip groove and a power housing. The light strip groove includes a base plate connected to the power housing and two opposing side plates. The side plates and the base plate are disconnected from each other within the light strip groove. The light strip groove has its inner end closer to the power housing and its outer end further away from the power source. One end of the power source housing is the outer end. A wiring terminal is provided inside the power source housing. The wiring terminal is electrically connected to a conductor extending to the LED strip slot. A wiring hole is provided on the wiring terminal. An inlet hole corresponding to the wiring hole is provided on the power source housing. The LED strip is installed in the LED strip slot. Its contact terminals are electrically connected to the conductor. The power line is fixed in the wiring hole of the wiring terminal. The fastening sleeve is fitted onto the LED strip slot. The two side walls of the fastening sleeve press against the two side walls of the LED strip slot, so that the two side walls of the LED strip slot are interference-fitted with the outer skin of the LED strip. The outer width of the LED strip slot is smaller than the inner width.

[0005] The beneficial effects of this utility model are as follows: Since the power supply housing is equipped with wiring terminals, the power cord can be directly connected through the wiring terminals without cutting the original plug and then connecting the power cord. This has the advantages of low manufacturing cost, simple installation and safety hazards. Furthermore, since the light strip groove and the power supply housing are connected into an integrated structure, the product is small in size and has a neat and beautiful appearance.

[0006] This utility model can be further improved as follows: the conductor includes a sleeve and a pin. The first end of the sleeve is connected to the LED strip slot, and its tail end is electrically connected to the terminal block. One end of the pin is inserted into the sleeve, and the other end is inserted into the LED strip and electrically connected to its contact terminal. A packaged bridge rectifier is also connected between the terminal block and the sleeve. A clamping ring is provided at the tail end of the sleeve. The packaged bridge rectifier includes an input pin and an output pin. The output pin is clamped in the clamping ring, and the input pin is fixed in the wiring hole of the terminal block. A first threaded hole penetrating the wiring hole is provided on the terminal block, and a screw for securing the output pin of the packaged bridge rectifier is installed in the first threaded hole. The conductor is a pin, one end of which is fixed inside the power supply housing and electrically connected to the terminal block, and the other end extends into the LED strip slot and is electrically connected to the contact terminal of the LED strip. A second threaded hole penetrating the wiring hole is provided on the terminal block, and a screw hole corresponding to the second threaded hole is provided on the power supply housing, and a screw for securing the power cord is installed in the second threaded hole. The two side walls of the fastening sleeve are parallel to each other, and the thickness of the outer end of the side plate is greater than the thickness of its inner end. A baffle is provided at one end of the fastening sleeve, and a step is provided on the outer side of the connector. The baffle abuts against the step or the end face of the LED strip groove for limitation. Anti-slip teeth are provided on the side plate and the bottom plate. The connector and the LED strip groove are integrally injection molded from rigid plastic, so the fastening sleeve is made of rigid plastic. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0008] Figure 2 This is a structural diagram of the assembled form of this utility model.

[0009] Figure 3 This is a partial cross-sectional view of the connector of this utility model.

[0010] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0011] Figure 5 This is a schematic diagram of the external structure of the connector of this utility model.

[0012] Figure 6 This is a schematic diagram of the structure of the fastening sleeve of this utility model.

[0013] Figure 7 for Figure 2 A schematic diagram of the structure of section AA in the middle.

[0014] Figure 8 This is a structural diagram of an existing LED strip power connector. Detailed Implementation

[0015] To further understand the features, technical means, specific purposes, and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. The descriptions of the positions of components and the positions between components in this utility model (including but not limited to upper, lower, left, right, inner, outer, head, tail, etc.) are definitions based on the positional states of the components shown in the accompanying drawings. Their purpose is to facilitate the description and understanding of the mechanical structure of the components and does not represent an absolute limitation on the scope of protection of this utility model. Those skilled in the art will understand that when the positional orientation of a component changes in the view, the description of the positional relationship may change, but the mechanical structure of the component does not fundamentally change.

[0016] refer to Figure 1 The power connection structure of the LED light strip includes an LED light strip 1, a power connection component without a power cord, and a power cord 8 for connecting to the mains power. The power connection component without a power cord includes a connector 2, a fastening sleeve 3, and a pin 4.

[0017] refer to Figure 1 The LED light strip 1 includes a flexible circuit board 11, multiple LED beads 12 mounted on the flexible circuit board 11, several contact terminals 13 disposed on the flexible circuit board 11, and a flexible outer skin 14 covering the flexible circuit board 11.

[0018] refer to Figure 1 The connector 2 includes a light strip groove 21 and a power supply housing 22, which are injection molded as a single unit. A limiting step 23 is provided between the light strip groove 21 and the power supply housing 22 on the outer side of the connector 2.

[0019] refer to Figures 1 to 4The LED strip groove 21 includes a base plate 211 integrally injection molded with the power supply housing 22 and two opposing side plates 212. The base plate 211 and side plates 212 are disconnected from each other within the LED strip groove 21, except for their common connection point with the power supply housing 22; that is, all three can be bent and deformed independently. The base plate 211, side plates 212, and LED strip groove 21 have their inner ends closer to the power supply housing 22 and their outer ends farther from the power supply housing 22. The outer end of the side plate 212 is thicker than its inner end. Two specific implementations are provided: one where the inner surfaces of the two side walls 221 are parallel to each other, and their outer surfaces are inclined to each other; and another where the outer surfaces of the two side walls 221 are parallel to each other, and their inner surfaces are inclined to each other. The inner sides of the side plates 212 and the base plate 211 are provided with sharp anti-slip teeth 213 facing the inner end of the LED strip groove 21.

[0020] refer to Figures 1 to 6 The power supply housing 22 houses a packaged bridge rectifier 5, a terminal block 6, and two sleeves 24 communicating with the LED strip slot 21. The packaged bridge rectifier 5 encapsulates a rectifier circuit consisting of four diodes. Two input pins 51 and an output pin 52 are provided outside the package for connecting to external circuits. The terminal block 6 has a through-hole 60 extending from both the front and rear ends. Its upper end has a first threaded hole 61 and a second threaded hole 62 communicating with the through-hole 60. The sleeve 24 has its first end communicating with the LED strip slot 21 and its rear end having an open clamp 241. The power supply housing 22 has an inlet hole 25 corresponding to the through-hole 61 of the terminal block 6, and a screw hole 26 corresponding to the second threaded hole 62 of the terminal block 6. The output pin 52 of the packaged bridge rectifier 5 is inserted into the open clamp 241. After the open clamp 241 clamps the output pin 52, it forms a clamp 241 that fixes the output pin of the packaged bridge rectifier 5. The two input pins 51 of the packaged bridge rectifier 5 are respectively inserted into the wiring holes 60 of the two terminals 6 from the inside, and the screws 7 for fixing the input pins 51 are screwed into the first threaded holes 61 of the terminals 6. Since the packaged bridge rectifier 5 is directly connected to the terminals 6 and the sleeve 24, it does not need to be soldered to the circuit board, which can reduce the size of the power supply housing. As a result, the power supply housing 22 and the LED strip slot 21 can be injection molded into a single structure. In this way, there is no need to injection mold a separate power supply housing in the middle of the power line, and the product shape is more compact, neat and beautiful.

[0021] refer to Figures 2 to 7The fastening sleeve 3 is made of rigid plastic and includes two parallel side walls 31 and two parallel upper and lower walls 32. One end of the fastening sleeve 3 is provided with a limiting step 23 that can abut against the end of the connector 2 or the end of the LED strip groove 21, and the other end is a straight end. The two side walls 31 of the fastening sleeve 3 are press-fitted with the two side plates 212 of the LED strip groove 21. When the fastening sleeve 3 is fitted onto the LED strip groove 21, its two side walls 31 press against the two side plates 212 of the LED strip groove 21, so that the LED strip groove 21 is press-fitted with the outer skin of the LED strip 1, and the outer width L1 of the LED strip groove 21 is smaller than its inner width L2. In this way, the fastening sleeve 3 can be fitted from the outer or inner end of the LED strip groove 21, which provides greater installation freedom. Of course, the two side walls 31 of the fastening sleeve 3 can also be set to be inclined to each other, and the outer and inner thicknesses of the two side walls 221 of the light strip groove 21 are equal. In this way, the distance L1 between the outer ends of the light strip groove 21 after the fastening sleeve 3 is fitted into the light strip groove 21 can be smaller than the distance L2 between its inner ends.

[0022] refer to Figure 1 and Figure 7 The pins 4 include at least two pins, and the two pins 4 are fixed at a fixed distance by a fixing member 41, so that the distance between one end of the two pins 4 is equal to the distance between the two contact terminals 13 on the LED light strip 1, and the distance between the other end is equal to the distance between the two sleeves 24.

[0023] refer to Figure 1 The installation method of this utility model includes: First, the fastening sleeve 3 is fitted onto the LED strip 1 or the connector 2; then, one end of the pin 4 is inserted into the end of the LED strip 1 and contacts the contact terminal 13 on the LED strip 1; then, the LED strip 1 and the pin 4 are placed into the LED strip groove 21, and the other end of the pin 4 is inserted into the sleeve 24, the sleeve 24 and the pin 4 are interference fit; then, the power cord 8 is inserted from the inlet hole 25 of the power housing 22 into the wiring hole 61 of the terminal 6, and then the nut screw 7 is screwed from the screw hole 26 of the power housing 22 into the threaded hole 62 of the terminal 6 to fix the power cord 8, and the cap 27 is pressed into the screw hole 26; finally, the fastening sleeve 3 is fitted onto the LED strip groove 21 until its baffle 34 abuts against the step 23 of the connector 2 or the end face of the LED strip groove 21.

[0024] refer to Figure 7After the LED strip is connected to the power connector, the two side walls 31 of the fastening sleeve 3 are press-fitted with the two side plates 212 of the LED strip groove 21, and the thickness of the outer end of the side plate 212 is greater than the thickness of its inner end. This causes the two side walls 31 of the fastening sleeve 3 to press against the two side plates 212 of the LED strip groove 21, making the outer width L1 of the LED strip groove 21 smaller than its inner width L2. The LED strip groove 21 can have only its outer end press-fitted with the LED strip 1, while its inner end has a clearance fit with the LED strip 1; or the entire outer end to the inner end of the LED strip groove 21 can be press-fitted with the LED strip 1, but the amount of press-fit at the outer end is greater than that at the inner end. In both cases, after the LED strip 1 is pressed by the two side plates 212 of the LED strip groove 21, its flexible outer skin 14 undergoes elastic deformation, and the deformation of the outer skin 14 at the outer end of the LED strip groove 21 is greater than that at the inner end. In this way, the LED light strip 1 is essentially locked inside the light strip groove 21, resulting in a high connection strength between the LED light strip 1 and the light strip groove 21, capable of withstanding large tensile forces. Furthermore, because the side wall 221 is made of a rigid material, the sharp anti-slip teeth 25 on the side plate 1 can penetrate the outer skin 14 of the LED light strip 1, increasing friction and further enhancing the connection strength. The upper wall 32 and lower wall 33 of the fastening sleeve 3 clamp the upper and lower surfaces of the light strip groove 21, providing support for the base plate 211 and ensuring tight electrical contact between the contact terminals 13 of the LED light strip 1 and the pins 24. Since the power connector 1 and the fastening sleeve 3 do not have repeatedly folding parts, they can be made of rigid plastic, and the fastening sleeve 3 has a closed ring structure, resulting in good overall integrity, better fastening force, and durability.

[0025] As a variation of this utility model, the sleeve 24 can be omitted, with one end of the pin 4 fixed inside the power supply housing 22 and directly electrically connected to the output pin 52 of the packaged bridge rectifier 5, and the other end extending into the LED strip slot 21 and electrically connected to the contact terminal 13 of the LED strip 1; or one end of the pin 4 can be integrally formed with the output pin 52 of the packaged bridge rectifier 5, and the other end can extend into the LED strip slot 21 and electrically connected to the contact terminal 13 of the LED strip 1. This results in fewer product components and simpler assembly.

[0026] This utility model has advantages such as low manufacturing cost, simple installation, and reduced safety hazards because it has a terminal block inside the power supply housing, allowing the power cord to be directly connected through the terminal block without cutting the original plug and then connecting the power cord. Furthermore, because the light strip groove and the power supply housing are connected as a single structure, the product is small in size and has a neat and beautiful appearance.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A power connection structure for an LED light strip, comprising an LED light strip, a power connection assembly, and a power cord for connecting to an external power source, wherein the LED light strip includes a circuit board, LED beads disposed on the circuit board, contact terminals, and a flexible outer sheath covering the circuit board, characterized in that: The power connection assembly includes a connector and a fastening sleeve. The connector includes a light strip groove and a power housing. The light strip groove includes a base plate connected to the power housing and two opposing side plates. The side plates and the base plate are disconnected from each other within the light strip groove. The light strip groove has an inner end closer to the power housing and an outer end farther from the power housing. A wiring terminal is provided inside the power housing. The wiring terminal is electrically connected to a conductor extending into the light strip groove. A wiring hole is provided on the wiring terminal. An inlet hole corresponding to the wiring hole is provided on the power housing. The LED light strip is installed in the light strip groove, and its contact terminals are electrically connected to the conductor. The power wire is fixed in the wiring hole of the wiring terminal. The fastening sleeve is fitted onto the light strip groove. The two side walls of the fastening sleeve press against the two side walls of the light strip groove, so that the two side walls of the light strip groove are interference-fitted with the outer skin of the LED light strip. The outer width of the light strip groove is smaller than the inner width.

2. The power connection structure for the LED light strip according to claim 1, characterized in that: The conductor includes a sleeve and a pin. The first end of the sleeve is connected to the LED strip groove, and its tail end is electrically connected to the terminal block. One end of the pin is inserted into the sleeve, and the other end is inserted into the LED strip and electrically connected to its contact terminal.

3. The power connection structure for the LED light strip according to claim 2, characterized in that: An encapsulated bridge rectifier is also connected between the terminal block and the sleeve.

4. The power connection structure for the LED light strip according to claim 3, characterized in that: The sleeve has a clamping ring at its tail end, and the packaged bridge rectifier has an input pin and an output pin. The output pin is fixed in the clamping ring, and the input pin is fixed in the wiring hole of the terminal block. The terminal block has a first threaded hole that passes through the wiring hole, and a screw for securing the output pin of the packaged bridge rectifier is installed in the first threaded hole.

5. The power connection structure for the LED light strip according to claim 1, characterized in that: The conductor is a pin, one end of which is fixed inside the power supply housing and electrically connected to the wiring terminal, and the other end extends into the LED strip groove and is electrically connected to the contact terminal of the LED strip.

6. The power connection structure for the LED light strip according to claim 1, characterized in that: The terminal block is provided with a second threaded hole that passes through the wiring hole, and the power housing is provided with a screw hole at a position corresponding to the second threaded hole, and a screw for securing the power cord is installed in the second threaded hole.

7. The power connection structure for the LED light strip according to claim 1, characterized in that: The two side walls of the fastening sleeve are parallel to each other, and the thickness of the outer end of the side plate is greater than the thickness of its inner end.

8. The power connection structure for the LED light strip according to claim 1, characterized in that: The fastening sleeve has a baffle at one end and a straight end at the other end. The connector has a step on the outside and the baffle abuts against the step or the end face of the light strip groove for limitation.

9. The power connection structure for the LED light strip according to claim 1, characterized in that: The side plates and bottom plates are provided with anti-slip teeth.

10. The power connection structure for the LED light strip according to claim 1, characterized in that: The connector and the light strip groove are integrally injection molded from rigid plastic, and the fastening sleeve is made of rigid plastic.

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