High-strength power supply connecting structure of LED (light-emitting diode) lamp strip

Abstract

The utility model discloses a high intensity power supply connection structure of LED lamp band, including LED lamp band, power supply joint and fastening sleeve, power supply joint includes power cord and lamp band groove, the lamp band groove is provided with a plurality of pin, LED lamp band is installed in the lamp band groove, pin one end is electrically connected with power cord, the other end is electrically connected with electric shock terminal, and the fastening sleeve is electrically connected with the electric shock terminal. The lamp strip groove is formed by a bottom plate and two opposite side plates in a surrounding mode, and the side plates and the bottom plate are separated from each other in the lamp strip groove. The fastening sleeve comprises two opposite side walls, an upper wall and a lower wall, the fastening sleeve is connected to the lamp belt groove in a sleeved mode, the two side walls of the fastening sleeve press the two side plates of the lamp belt groove, the width of the outer end of the lamp belt groove is smaller than that of the inner end of the lamp belt groove, the two side plates of the lamp belt groove press the LED lamp belt, and the deformation amount of the outer skin of the LED lamp belt at the outer end of the lamp belt groove is larger than that of the inner end of the lamp belt groove. The connecting strength of the LED lamp strip and the power connector is high, the bearable tensile force is large, the durability is good, the structure is simple, and installation is easy.

Description

Technical Field

[0001] The utility model relates to a lighting fixture, and particularly discloses a high-strength power supply connection structure of an LED light strip. Background Art

[0002] The existing LED light strip power connector, referenced in Patent No. 201720729190.X, includes a plug-in portion and a wire. The plug-in portion has a slot, the upper opening of which is provided with a cover connected via a thin sheet of material. A buckle is provided on the side of the slot, and a hole is provided on the side of the cover to mate with the buckle. Installation involves inserting the LED light strip through the slot opening, ensuring electrical contact between the plug and the contact terminals on the LED light strip circuit board. The cover is then closed, and the buckle on the slot engages with the hole in the cover to secure the two. Since the pressing force of the cover on the LED light strip comes from the connection between the buckle and the card hole, and the cover and the plug-in slot are connected by a thin sheet material, in order to prevent the thin sheet from being broken by repeated opening and closing, the cover and the plug-in slot need to be made of a material with good toughness and low hardness, and the cover has an open structure and is easy to open when subjected to force. Therefore, the pressing force of the existing power connector on the LED light strip is weak, and the LED light strip is easy to loosen, resulting in poor electrical contact between the LED light strip and the conductive strip, posing a fire hazard. Utility Model Content

[0003] Based on this, it is necessary to provide an LED power supply connection structure with high connection strength, easy installation and simple structure to address the existing technical problems.

[0004] In order to solve the problems of the prior art, the utility model discloses a high-strength power connection structure for an LED light strip, including an LED light strip and a power connection assembly thereof, wherein the LED light strip includes a circuit board, a plurality of electric contact terminals arranged on the circuit board and a flexible outer skin wrapping the circuit board, the power connection assembly includes a power connector, the power connector includes a body, one end of the body is provided with a power cord, the other end is provided with a light strip groove, the light strip groove is provided with a plurality of pins corresponding to the electric contact terminals, the LED light strip is installed in the light strip groove, one end of the pin is electrically connected to the power cord, and the other end is inserted into the LED light strip Electrically connected to the electric shock terminal, the light strip groove is formed by a bottom plate extending from the main body and two opposite side plates, the side plates and the bottom plate are separated from each other in the light strip groove, the light strip groove and the side plates have an end close to the main body as an inner end, and an end away from the main body as an outer end; it also includes a fixing sleeve, the fixing sleeve includes two opposite side walls and opposite upper and lower walls; the fixing sleeve is sleeved on the light strip groove, the two side walls of the fixing sleeve press the two side plates of the light strip groove, so that the width of the outer end of the light strip groove is smaller than the width of the inner end, and the two side plates of the light strip groove press the LED light strip, so that the deformation of the LED light strip outer skin at the outer end of the light strip groove is greater than that at the inner end.

[0005] The beneficial effects of the present invention are as follows: since the two side walls of the fixing sleeve press the two side plates of the light strip groove, the width of the outer end of the light strip groove is smaller than the width of the inner end, and the two side plates of the light strip groove press the LED light strip, the deformation of the outer skin of the LED light strip at the outer end of the light strip groove is greater than that at the inner end, the connection strength between the LED light strip and the power connector is high, can withstand large tensile force, has good durability, and has a simple structure and is easy to install.

[0006] The present utility model can be further improved as follows: the two side walls of the fixing sleeve are parallel to each other, and the thickness of the outer end of the side panel is greater than the thickness of the inner end thereof. A baffle is provided at one end of the inner side of the fixing sleeve to cooperate with the end face of the light strip groove, and the baffle abuts against the end face of the light strip groove. A step is provided on the main body, and a baffle is provided at one end of the inner side of the fixing sleeve to cooperate with the step, and the baffle abuts against the step or the end face of the light strip groove. Anti-slip teeth facing the inner end of the light strip groove are provided on the side panel and the bottom plate. One end of the pin is fixed to the main body and electrically connected to the power cord, and the other end is inserted into the LED light strip to electrically contact the electric contact terminals respectively. The main body is provided with several mounting holes leading to the light strip slot. A conductive sleeve is provided in the mounting hole. The sleeve is retracted into the mounting hole toward one end of the light strip slot, and its other end is electrically connected to the power cord. The plurality of pins are inserted into the fixing portion, which fixes the spacing of the plurality of pins. One end of the pin is inserted into the sleeve to electrically contact the power cord, and the other end is inserted into the LED light strip to electrically contact the electric contact terminals. The power connector and the fixing sleeve are made of hard plastic. The upper and lower walls of the fixing sleeve are clamped to the upper and lower surfaces of the light strip slot, so that the pins are in close contact with the electric contact terminals of the LED light strip. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0008] Figure 2 It is a partial cross-sectional view of the fastening sleeve of the utility model.

[0009] Figure 3 This is one of the structural diagrams of the power connector.

[0010] Figure 4 This is the second structural diagram of the power connector.

[0011] Figure 5 This is a schematic diagram of the assembly drawing of Example 1 of the present utility model.

[0012] Figure 6 This is a schematic diagram of the assembly drawing of Example 2 of the present utility model.

[0013] Figure 7 for Figure 1 AA direction cross-sectional view of Example 1.

[0014] Figure 8 for Figure 1 AA direction cross-sectional view of Example 2. DETAILED DESCRIPTION

[0015] In order to further understand the features, technical means, specific purposes and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. The description of the positional relationship between the components of the present invention (including but not limited to up, down, left, right, inside, outside, head end, tail end, etc.) is based on the position state of the components shown in the accompanying drawings as a reference definition. Its 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 the present invention. Those skilled in the art will understand that when the position direction of the components in the drawing changes, the description of the positional relationship may change, but the mechanical structure of the components does not change in essence.

[0016] Example 1, reference Figure 1 The high-strength power connection structure of the LED light strip includes an LED light strip 1 and a power connection component thereof, wherein the power connection component includes a power connector 2 and a fastening sleeve 3.

[0017] refer to Figure 5 The LED light strip 1 includes a flexible circuit board 11, a plurality of LED lamp beads 12 mounted on the flexible circuit board 11, a plurality of electric contact terminals 13 provided on the flexible circuit board 11, and a flexible outer shell 14 wrapping the flexible circuit board 11. The circuit board 11 includes a circuit board layer and a back insulating film and a front insulating film provided on both sides of the circuit layer. The circuit layer is provided with a power circuit and a signal circuit. The front insulating film has windows corresponding to the positions of the circuits. The electric contact terminals 13 are soldered in the windows to electrically contact the power circuit and the signal circuit.

[0018] refer to Figures 3 to 5 . The power connector 2 is made of hard plastic and includes a main body 20. A power cord 21 is provided at one end of the main body 20 and a light strip groove 22 is provided at the other end. The power cord 21 can be directly connected to the mains power line, or a plug 23 can be provided to connect to the socket. The light strip groove 22 is formed by a bottom plate 222 extending from the main body 21 and two opposite side panels 221. In addition to the main body 20 as a common connection point, the side panels 221 and the bottom panel 222 are separated from each other in the light strip groove 22, that is, the three can bend and deform independently. The side panel 221 and the light strip groove 22 have the end close to the main body 20 as the inner end and the end away from the main body 20 as the outer end. The thickness of the outer end of the side panel 221 is greater than that of its inner end. There are two specific implementation methods, one of which is as Figure 3 As shown, the inner side surfaces 22b of the two side walls 221 are parallel to each other, and the outer side surfaces 22a thereof are inclined to each other; Figure 4 As shown, the outer side surfaces 22b of the two side walls 221 are parallel to each other, and the inner side surfaces 22b thereof are inclined to each other. Sharp anti-slip teeth 25 facing the inner end of the light strip groove 22 are provided on the inner sides of the side panels 221 and the bottom panel 222. The main body 20 is also provided with at least two pins 24, one end of which extends into the light strip groove 22 and the other end is electrically connected to the power cord 21. In an LED light strip that needs to transmit control signals, there can be more than two pins 24. A step 26 is provided on the main body 20 near the light strip groove 22.

[0019] refer to Figures 2 to 8 . The fastening sleeve 3 is made of hard plastic and includes two parallel side walls 31 and parallel upper and lower walls 32 and 33. One end of the fastening sleeve 3 is provided with a baffle 34 that can clamp the step 26 of the power connector 2 or the end of the light strip groove 22, and the other end is a straight-through end. The two side walls 31 of the fastening sleeve 3 are interference fit with the two side plates 221 of the light strip groove 22. When the fastening sleeve 3 is sleeved on the light strip groove 22, its two side walls 31 press the two side plates 221 of the light strip groove 22, so that the outer end width L1 of the light strip groove 22 is smaller than the inner end width L2. In this way, the fastening sleeve 3 can be inserted from the outer end or inner end of the light strip groove 22, and the installation freedom is higher. 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 ends of the two side walls 221 of the light strip groove 22 have equal thickness. In this way, after the fastening sleeve 3 is sleeved on the light strip groove 22, the outer end spacing L1 of the light strip groove 22 can be smaller than the inner end spacing L2.

[0020] refer to Figure 1 、 Figure 3 and Figure 7 , the assembly method of the utility model is: first, as Figure 3 As shown, the fastening sleeve 3 is sleeved on the power cord 21, with its straight-through end facing the light strip groove 22; or the fastening sleeve 3 is sleeved on the LED light strip 1, with its straight-through end facing the end of the LED light strip 1; then the LED light strip 1 is aligned with the pins 24, and inserted from the end opening of the light strip groove 22 to the bottom of the light strip groove 22. At this time, the two pins 24 are inserted from the end of the LED light strip 1 between its outer skin 14 and the circuit board 11, and are electrically contacted with the two electric contact terminals 13 on the circuit board 21 respectively; finally, the fastening sleeve 3 is inserted into the light strip groove 22 until its baffle 34 abuts against the step 25 of the main body 20, or its baffle 34 abuts against the outer end surface of the light strip groove 22.

[0021] refer to Figure 7. After the LED light strip is connected to the power connector, since the two side walls 31 of the fastening sleeve 3 are interference fit with the two side plates 221 of the light strip groove 22, and the thickness of the outer end of the side plate 221 is greater than the thickness of its inner end, the two side walls 31 of the fastening sleeve 3 press the two side plates 221 of the light strip groove 22, so that the outer end width L1 of the light strip groove 22 is smaller than the inner end width L2. The light strip groove 22 can only have an interference fit with the LED light strip 1 at the outer end, and its inner end can have a clearance fit with the LED light strip 1; or the light strip groove 22 can have an interference fit with the LED light strip 1 as a whole from the outer end to the inner end, but the interference fit at the outer end is greater than that at the inner end. In both cases, after the LED light strip 1 is pressed by the two side plates 221 of the light strip groove 22, its flexible outer skin 14 undergoes elastic deformation, and the deformation of the outer skin 14 at the outer end of the light strip groove 22 is greater than that at the inner end. In this way, the LED light strip 1 is equivalent to being stuck in the light strip groove 22. The connection strength between the LED light strip 1 and the light strip groove 22 is high and can withstand large tensile forces. In fact, because the side wall 221 is made of hard material, the sharp anti-slip teeth 25 on the side panel 1 can penetrate the outer skin 14 of the LED light strip 1, which can increase friction and further improve the connection strength. The upper wall 32 and lower wall 33 of the fastening sleeve 3 are clamped on the upper and lower surfaces of the light strip groove 22, providing support for the bottom plate 222, so that the electric contact terminal 13 of the LED light strip 1 maintains close electrical contact with the pin 24. Because the power connector 1 and the fastening sleeve 3 do not have repeatedly folded parts, they can be made of hard plastic. In addition, the fastening sleeve 3 is a closed ring structure with good integrity, better fastening force and durability.

[0022] Example 2. The structure of this example is mostly the same as that of Example 1. The following mainly describes the different parts. For the parts not described, please refer to Example 1. Figure 4 , two mounting holes 27 leading to the light strip groove 22 are provided in the main body 20, and a conductive sleeve 28 is provided in the mounting hole 27. The sleeve 28 is retracted into the mounting hole 27 toward one end of the light strip groove 22, and the other end thereof is electrically connected to the power cord 11. The two pins 24 are inserted into the fixing portion 241, and the fixing portion 241 fixes the spacing between the pins 24 so that the spacing at one end of the two pins 24 is equal to the spacing between the two electric contact terminals 23 on the LED light strip, and the spacing at the other end is equal to the spacing between the two sleeves 28. The installation method of this embodiment is different from that of Example 1 in that: first, one end of the pin is inserted into the end of the LED light strip so that one end of the pin contacts the two electric contact terminals 23 on the light strip, and then, in the process of inserting the LED light strip into the light strip groove 22, the other end of the pin 24 is inserted into the sleeve 28. Since the sleeve 28 is retracted into the installation hole 27, even if the power cord 21 is connected to the mains during the installation process, there is no risk of electric shock during live operation, and the construction safety index is higher.

[0023] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high-strength power connection structure for an LED light strip, comprising an LED light strip and a power connection assembly thereof, wherein the LED light strip comprises a circuit board, a plurality of electric contact terminals disposed on the circuit board, and a flexible outer skin wrapping the circuit board; the power connection assembly comprises a power connector, the power connector comprising a body, one end of the body being provided with a power cord, the other end being provided with a light strip groove, the light strip groove being provided with a plurality of pins corresponding to the electric contact terminals, the LED light strip being mounted in the light strip groove, one end of the pins being electrically connected to the power cord, and the other end being inserted into the LED light strip and electrically connected to the electric contact terminals, characterized in that: The light strip groove is formed by a bottom plate extending from the main body and two opposite side plates. The side plates and the bottom plate are separated from each other in the light strip groove. The light strip groove and the side plates have an end close to the main body as an inner end and an end away from the main body as an outer end. The light strip groove also includes a fixing sleeve, which includes two opposite side walls and opposite upper and lower walls. The fixing sleeve is sleeved on the light strip groove, and the two side walls of the fixing sleeve press the two side plates of the light strip groove, so that the width of the outer end of the light strip groove is smaller than the width of the inner end. The two side plates of the light strip groove press the LED light strip, so that the deformation of the outer skin of the LED light strip at the outer end of the light strip groove is greater than that at the inner end.

2. The high-strength power connection structure for an 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 the inner end thereof.

3. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: A baffle that matches the end surface of the light strip groove is provided at one end of the inner side of the fastening sleeve, and the baffle abuts against the end surface of the light strip groove.

4. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: The main body is provided with a step, and one end of the inner side of the fastening sleeve is provided with a baffle matched with the step, and the baffle abuts against the step.

5. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: The side panels and the bottom panel are provided with anti-slip teeth facing the inner end of the light strip groove.

6. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: One end of the pin is fixed on the body and electrically connected to the power line, and the other end is inserted into the LED light strip and electrically contacts the electric contact terminals respectively.

7. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: The main body is provided with several mounting holes leading to the light strip groove, and a conductive sleeve is provided in the mounting hole. The sleeve is retracted into the mounting hole toward one end of the light strip groove, and the other end thereof is electrically connected to the power cord. The several pins are inserted into the fixing part, and the fixing part fixes the spacing between the several pins. One end of the pin is inserted into the sleeve and electrically contacts the power cord, and the other end is inserted into the LED light strip and electrically contacts the electric contact terminals respectively.

8. The high-strength power connection structure for an LED light strip according to claim 6 or 7, characterized in that: The upper wall and the lower wall of the fastening sleeve are clamped on the upper surface and the lower surface of the light strip groove, so that the pins are in close contact with the electric contact terminals of the LED light strip.

9. The high-strength power connection structure for an LED light strip according to claim 1, characterized in that: The power connector and the fastening sleeve are made of hard plastic.

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