Power supply connecting structure of LED lamp strip

Abstract

A power supply connecting structure of LED lamp strips comprises a plurality of LED lamp strips and a power supply connecting assembly, the power supply connecting assembly comprises a power supply connector and a fastening sleeve, one end of the power supply connector is connected with a plurality of power lines, the other end of the power supply connector comprises a bottom plate, a conductive strip, a pressing strip and a clamping groove, and a clamping strip matched with the clamping groove is arranged in an inner cavity of the fastening sleeve; the LED lamp strip is embedded between the bottom plate and the conductive strip, the fastening sleeve is connected to the power connector in a sleeved mode, the clamping strip of the fastening sleeve is clamped into the clamping groove of the connecting piece, the upper side face of an inner cavity of the fastening sleeve presses the pressing strip, the pressing strip presses the circuit board to fix the circuit board, and meanwhile the pressing strip presses the conductive strip to make the conductive strip make electric contact with the wiring terminal. According to the utility model, the fastening sleeve and the power supply connector are clamped through the clamping groove, the circuit board is fixed and the conductive strip is forced to be in electric contact with the wiring terminal through the interference fit of the fastening sleeve and the lamp strip connector, and the pressure is strong and the durability is good, so that the LED lamp strip has the advantages of stronger tension resistance and more reliable electric connection.

Description

Technical Field

[0001] The utility model relates to a lighting fixture, and in particular discloses a power supply connection structure of an LED light belt. Background Art

[0002] The existing LED light strip power connector has a reference patent number of 201720729190.X, which is a LED light strip power connector, including a plug-in portion and a wire, wherein the plug-in portion is provided with a plug-in slot, the upper opening of the plug-in slot is provided with a cover body connected by a sheet material, a buckle is provided on the side of the plug-in slot, and a clamping hole that cooperates with the buckle is provided on the side of the cover body. The installation method is: insert the LED light strip from the end of the plug-in slot, so that the plug-in sheet is in electrical contact with the wiring terminal on the LED light strip circuit board, and then close the cover body, and the buckle on the plug-in slot is clamped into the clamping hole of the cover body to fix the two. Since the pressing force of the cover on the LED light strip comes from the buckle, 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 is an open structure, which is easy to open after being 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 a power connection structure for an LED light strip with strong fastening force and reliable electrical contact in order to solve the problems in the prior art.

[0004] In order to solve the problems of the prior art, the utility model discloses a power connection structure of an LED light strip, comprising a plurality of LED light strips and a power connection assembly, wherein the LED light strip comprises a circuit board, LED lamp beads mounted on the circuit board and wiring terminals arranged on the circuit board, wherein the power connection assembly comprises a power connector and a fixing sleeve, wherein the power connector comprises a body, wherein one end of the body is connected to a plurality of power lines, and the other end of the body is a light strip connector, wherein the light strip connector comprises a bottom plate, wherein a plurality of conductive strips corresponding to the wiring terminals are arranged above the bottom plate, wherein a plurality of pressure strips corresponding to the conductive strips are arranged above the conductive strips, wherein the plurality of conductive strips are electrically connected to the plurality of power lines respectively, and wherein the conductive strips are connected to the bottom plate. There is a gap between them, and a slot is also provided on the main body; the inner cavity of the fixing sleeve is provided with a clip that cooperates with the slot, and the inner cavity includes an upper side surface, a lower side surface, a left side surface and a right side surface, and the end of the fixing sleeve connected to the light strip connector is the inner end, and the other end is the outer end; the LED light strip is embedded between the bottom plate of the connector and the conductive strip, and the fixing sleeve is sleeved on the connector, and the clip of the fixing sleeve is inserted into the slot of the connector to fix the two, and the upper and lower side surfaces of the inner cavity of the fixing sleeve are interference fit with the light strip connector, and the upper side surface of the inner cavity presses the pressure strip, and the pressure strip presses the circuit board to fix it, and the pressure strip also presses the conductive strip to make it electrically contact with the wiring terminal of the circuit board.

[0005] The beneficial effects of the utility model are as follows: the utility model fixes the circuit board by the pressure generated by the interference fit between the fixing sleeve and the light strip connector, and also makes electrical contact between the conductive strip and the circuit board terminal. The fixing sleeve is an annular closed structure, and the pressure is strong and durable. The fixing of the fixing sleeve and the power connector is achieved by the clamping connection between the clamping strip of the fixing sleeve and the clamping groove of the power connector. The function of the clamping connection is only to prevent the fixing sleeve from slipping out of the power connector. It has a single function, a lower burden, and a more reliable clamping connection. In addition, since the fixing sleeve has no moving parts, it can be made of hard materials, and the clamping and fastening force is stronger. Therefore, the utility model has the advantages of stronger tensile resistance of the LED light strip and more reliable electrical connection.

[0006] The utility model can be further improved as follows: the upper and lower spacing of the inner end of the inner cavity of the tightening sleeve is greater than the upper and lower spacing of the outer end, and the interference fit between the inner end of the tightening sleeve and the light strip connector is smaller than the interference fit between the outer end and the light strip connector. A plug-in slot is also provided on the main body, and the plurality of pressure strips are connected through a mounting portion. A pin that cooperates with the plug-in slot is provided on the lower side of the mounting portion, and the pressure strip is fixed by inserting the pin into the plug-in slot. The card slot includes a first card slot and a second card slot, the first card slot is provided on the back of the bottom plate near the main body, the second card slot is provided on the upper side of the mounting portion of the pressure strip, and the card strip is provided on the upper and lower side surfaces of the inner end of the inner cavity of the tightening sleeve. Anti-slip teeth and contacts are provided on the lower side of the pressure strip, the anti-slip teeth are pressed on the circuit board, and the contacts are pressed on the conductive strip. The height difference between the anti-slip teeth and the contacts is equal to the thickness of the conductive strip. The two sides of the body are provided with guide ribs, the left and right sides of the inner end of the inner cavity of the fastening sleeve are provided with guide grooves matching with the guide ribs, and the guide ribs are inserted into the guide grooves. The pressure strip and the body are an integral injection molding structure. The fastening sleeve is made of hard material. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0008] Figure 2 It is a schematic diagram of the structure of the utility model after assembly.

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

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

[0011] Figure 5 This is one of the structural schematic diagrams of the layering strip of the utility model.

[0012] Figure 6 This is the second structural schematic diagram of the layering strip of the utility model.

[0013] Figure 7 It is a partial cross-sectional view of the fastening sleeve of the utility model.

[0014] Figure 8 for Figure 2 Schematic diagram of the AA section. DETAILED DESCRIPTION

[0015] In order to further understand the features, technical means, specific purposes and functions of the utility model, the utility model 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 utility model (including but not limited to up, down, left, right, inside, outside, etc.) is a definition based on the position state of the components shown in the accompanying drawings. 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 utility model; those skilled in the art can understand that when the placement direction of the components in the view changes, the description of the positional relationship may change, but the mechanical structure of the components has not changed essentially.

[0016] refer to Figure 1 and Figure 2 The LED light strip 1 applicable to the utility model is a bare board LED light strip, including a circuit board 11 and LED lamp beads 12 mounted on the circuit board 11. The circuit board 11 is provided with at least a positive circuit and a negative circuit, and may also be provided with a signal circuit. The circuit board 11 is provided with connection terminals 13 protruding from the surface of the circuit board 11 and electrically connected to the positive and negative circuits and the signal circuit.

[0017] refer to Figure 1 A power connection structure of an LED light strip includes a power connector 2, a pressure strip 3 and a fastening sleeve 4.

[0018] refer to Figure 3 and Figure 4 The power connector 2 includes a body 21, one end of which is connected to a plurality of power lines 22, and the other end is a light strip connector 20. The light strip connector 20 includes a bottom plate 23 that is integrally molded with the body 21, and a plurality of conductive strips 24 that are mounted on the body 21 and located above the bottom plate 23. A first card slot 25 is provided on the back of the bottom plate 23 near the body 21. The plurality of conductive strips 24 correspond to the wiring terminals 13 on the LED light strip circuit board 11, and are electrically connected to the plurality of power lines 21 respectively. The tail end of the conductive strip 24 faces the outer end of the bottom plate 23, and there is a gap between the conductive strip 24 and the bottom plate 23. A plug-in slot 26 is provided on the upper side of the body 21, and guide ribs 27 are provided on the left and right sides of the body 21. When the LED light strip 1 includes only one set of positive and negative power supply circuits, the light strip connector 20 is provided with only two conductive strips 24; when the LED light strip includes multiple sets of positive and negative power supply circuits or signal circuits, the light strip connector 20 can also be provided with multiple conductive strips 24.

[0019] refer to Figure 5 and Figure 6The pressure strip 3 includes a plurality of pressure strips corresponding to the conductive strips 24, and the plurality of pressure strips 3 are connected through a mounting portion 31. A plug 32 is provided at the lower side of the mounting portion 31 to cooperate with the plug slot 26 of the power connector 2. A second card slot 33 is provided at the upper side of the mounting portion 31. Anti-skid teeth 34 and contacts 35 are provided at the lower side of the tail end of the pressure strip 3. The height difference between the anti-skid teeth 34 and the contacts 35 is equal to the thickness of the conductive strip 24. The pressure strip 3 can also be injection molded into an integral structure with the body 21 of the power connector 2.

[0020] refer to Figure 7 . The fastening sleeve 4 has an inner cavity 40 that is interference-fitted with the light strip connector 20, and the inner cavity 40 includes an upper side surface 41, a lower side surface 42, and left and right side surfaces 43. The interference fit means that after the fastening sleeve 4 is installed, the upper and lower side surfaces 41, 42 thereof are interference-fitted with the pressure strip 3 and the bottom plate 23, so as to achieve the purpose of fixing the LED light strip 1. The upper side surface 41 and the lower side surface 42 are provided with a clamping strip 44 that cooperates with the first clamping groove 25 and the second clamping groove 33, and the left and right side surfaces 43 are provided with a guide groove 45 that cooperates with the guide rib 27. One end of the fastening sleeve 4 connected to the light strip connector 20 is the inner end 4a, and the other end is the outer end 4b. The upper side surface 41 can be further configured as an inclined surface in which the upper and lower spacing L1 of the inner end 4a is greater than the upper and lower spacing L2 of the outer end 4b, so that the interference fit between the inner end 4a of the fixing sleeve and the light strip connector 20 is smaller than the outer end 4b. In this way, on the one hand, the fixing sleeve 4 is easier to install, and on the other hand, the fixing sleeve 4 exerts greater pressure on the pressure strip 3.

[0021] refer to Figure 1 , Figure 2 ,and Figure 8 The assembly method of the utility model is: firstly, the LED light strip 1 is passed through the fixing sleeve 4, and then the end of the circuit board 11 of the LED light strip 1 is embedded between the bottom plate 23 of the light strip connector 20 and the conductive strip 24, and the connection terminal 13 on the circuit board 11 is aligned with the conductive strip 24; then the pin 32 of the pressure strip 3 is inserted into the plug-in slot 26 of the body 21, and the pressure strip 3 is aligned with the conductive strip 24, and then the fixing sleeve 4 is sleeved to the light strip connector 20, when the inner end 4a of the fixing sleeve 4 is close to the body 21 of the light strip connector 20, the guide ribs 27 on both sides of the body 21 are inserted into the guide grooves 45 on both sides of the fixing sleeve 4, and the fixing sleeve 4 is continuously pushed until the clamping strips 44 on the upper and lower sides of the fixing sleeve 4 are respectively inserted into the first clamping slot 25 and the second clamping slot 33, so that the fixing sleeve 4 is fixed to the power connector 2. At this time, the upper side surface 41 of the inner cavity of the fastening sleeve squeezes the pressure strip 3, so that the anti-slip teeth 34 of the pressure strip 3 are pressed on the circuit board 11, fixing the circuit board and the power connector 2. At the same time, the contact 35 of the pressure strip 3 is also pressed on the conductive strip 24, making the conductive strip 24 in close electrical contact with the terminal 13 on the circuit board 11.

[0022] The upper side of the inner cavity 40 of the tightening sleeve can also be provided with ribs inclined relative to the lower side to apply pressure to the pressure strip. The utility model preferably has an inclined upper side, so that there is no need to consider the alignment problem and it is easier to install. Since the pressure strip 3 and the power connector 2 are an assembled structure, the pressure strip 3 can be made of a material with lower rigidity than the tightening sleeve 4 and the power connector 2 to avoid hard contact with the circuit board 11, thereby protecting the circuit board 11 and providing a more durable tightening force on the circuit board 11. Since the pressure of the tightening sleeve 4 on the circuit board 11 mainly comes from the outer end of the tightening sleeve 4, the clamping strip 44 is arranged at the inner end 4a of the tightening sleeve, the tightening sleeve 4 is easier to install, the tightening sleeve 4 and the power connector 2 are more evenly stressed, and the tensile strength of the LED light strip is stronger. Since the height difference between the anti-slip teeth 34 and the contact 35 is equal to the thickness of the conductive strip 24, the pressure of the pressure strip 3 on the circuit board 11 and the conductive strip 24 can be made the same, preventing the side with lower pressure from loosening. Since the outer surface of the tightening sleeve 4 is flush with the outer surface of the fixing portion 24 of the power connector 2, the product is more beautiful as a whole.

[0023] The beneficial effects of the utility model are as follows: the utility model fixes the circuit board by the pressure generated by the interference fit between the fixing sleeve and the power connector, and also makes electrical contact between the conductive strip and the circuit board terminal; the fixing sleeve is an annular closed structure, and the pressure is strong and durable; the fixing of the fixing sleeve and the power connector is achieved by the clamping connection between the clamping strip of the fixing sleeve and the clamping groove of the power connector, and the function of the clamping connection is only to prevent the fixing sleeve from slipping out of the power connector, and the function is single, the burden is lower, and the clamping connection is more reliable; in addition, since the fixing sleeve has no movable parts, it can be made of hard materials, and the clamping and fastening force is stronger. Therefore, the utility model has the advantages of stronger tensile resistance of the LED light strip and more reliable electrical connection.

[0024] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A power connection structure for an LED light strip, comprising a plurality of LED light strips and a power connection assembly, wherein the LED light strip comprises a circuit board, LED lamp beads mounted on the circuit board, and a connection terminal arranged on the circuit board, characterized in that: The power connection assembly includes a power connector and a fixing sleeve, the power connector includes a body, one end of the body is connected to a plurality of power lines, the other end of the body is a light strip connector, the light strip connector includes a bottom plate, a plurality of conductive strips corresponding to the wiring terminals are arranged above the bottom plate, a plurality of pressure strips corresponding to the conductive strips are arranged above the conductive strips, the plurality of conductive strips are electrically connected to the plurality of power lines respectively, there is a gap between the conductive strips and the bottom plate, and a card slot is also arranged on the body; the inner cavity of the fixing sleeve is provided with a card strip matching the card slot, the inner cavity It includes an upper side surface, a lower side surface, a left side surface and a right side surface, one end of the fixing sleeve connected to the light strip connector is the inner end, and the other end is the outer end; the LED light strip is embedded between the bottom plate of the connector and the conductive strip, the fixing sleeve is sleeved on the connector, the clamping strip of the fixing sleeve is clamped into the clamping groove of the connector to fix the two, the upper and lower side surfaces of the inner cavity of the fixing sleeve are interference fit with the light strip connector, the upper side surface of the inner cavity presses the pressure strip, the pressure strip presses the circuit board to fix it, and the pressure strip also presses the conductive strip to make it electrically contact with the wiring terminal of the circuit board.

2. The power connection structure of an LED light strip according to claim 1, characterized in that: The upper and lower spacing of the inner end of the inner cavity of the tightening sleeve is larger than the upper and lower spacing of the outer end, and the interference fit between the inner end of the inner cavity of the tightening sleeve and the light strip connector is smaller than the interference fit between the outer end and the light strip connector.

3. The power connection structure of an LED light strip according to claim 1, characterized in that: The main body is also provided with an inserting groove, the plurality of pressure strips are connected via a mounting portion, a latch matching the inserting groove is provided at the lower side of the mounting portion, and the pressure strip is inserted into the inserting groove and fixed by the latch.

4. The power connection structure of the LED light strip according to claim 3, characterized in that: The card slot includes a first card slot and a second card slot, the first card slot is arranged on the back side of the base plate close to the body, the second card slot is arranged on the upper side of the mounting portion of the pressure strip, and the card strip is arranged on the upper and lower side surfaces of the inner end of the inner cavity of the fixing sleeve.

5. The power connection structure of an LED light strip according to claim 1, characterized in that: The lower side of the tail end of the pressure strip is provided with anti-skid teeth and contacts, the anti-skid teeth are pressed on the circuit board, and the contacts are pressed on the conductive strip.

6. The power connection structure of an LED light strip according to claim 5, characterized in that: The height difference between the anti-slip teeth and the contact point is equal to the thickness of the conductive strip.

7. The power connection structure of an LED light strip according to claim 1, characterized in that: The two side surfaces of the body are provided with guide ribs, and the left and right side surfaces of the inner end of the inner cavity of the fastening sleeve are provided with guide grooves matching with the guide ribs, and the guide ribs are inserted into the guide grooves.

8. The power connection structure of an LED light strip according to claim 1, characterized in that: The pressure strip and the main body are an integral injection-molded structure.

9. The power connection structure of an LED light strip according to claim 1, characterized in that: The fixing sleeve is made of hard material.

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