High-strength middle connecting structure of LED lamp strip
The intermediate joint and fixing sleeve made of hard plastic, with interference fit and anti-slip tooth design, solve the problem of loose connection structure in the middle of LED light strip, achieve high-strength and stable electrical connection, and improve safety and durability.
Patent Information
- Application Number
- CN202422752582.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The intermediate connection structure of existing LED light strips is easily loosened, resulting in poor electrical contact and posing a fire hazard.
The middle joint and fixing sleeve are made of hard plastic, and the connection strength is increased by interference fit and sharp anti-slip teeth, ensuring that the width of the outer end of the light strip groove is smaller than the inner end, and a tight connection is achieved by utilizing the difference in deformation between the side wall and side plate of the fixing sleeve.
The connection strength and durability of the LED light strip are improved, ensuring stable electrical contact, reducing the risk of loosening, and improving safety and durability.
Smart Images
Figure CN223425199U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lighting fixture, and particularly discloses a high-strength middle connection structure of an LED light strip. Background Art
[0002] Reference publication number 210462581U describes a conventional intermediate connector for a wireless LED light strip. The intermediate connector comprises a light strip slot at each end, with a pin electrically connected to each other between the two slots. A securing cover is provided over the upper opening of the slot, one side of which is integrally connected to the slot via a thin sheet of material. The other side of the securing cover has a latching hole, and a buckle that engages with the latching hole. The connection method involves first inserting the LED light strip into the slot through the end opening until the pins electrically contact the contact terminals on the LED light strip circuit board, thereby electrically connecting the two sections of the LED light strip. The securing cover is then closed, allowing the latch on the slot to engage with the latching hole of the securing cover, thereby clamping the LED light strip in the slot. Because the fastening cover is connected to one side of the light strip slot via a thin sheet of material, the cover and slot must be made of a tough, low-hardness material to prevent the sheet from breaking due to repeated opening and closing, which can easily deform under stress. Furthermore, because the other side of the fastening cover is secured to the light strip slot via a latch and buckle, the latch requires a certain amount of clearance to allow for a return, resulting in a low locking force. Consequently, existing intermediate connection structures for LED light strips can easily loosen, leading to poor electrical contact between the LED light strip and the conductive strip, and posing a fire hazard. Utility Model Content
[0003] Based on this, it is necessary to provide an intermediate connection structure for LEDs with a simple structure, easy installation and high connection strength to address the problems of the existing technology.
[0004] To solve the problems of the prior art, the present invention discloses a high-strength intermediate connection structure for an LED light strip, comprising two LED light strips and an intermediate connection assembly thereof. The LED light strip comprises a circuit board, a plurality of electric contact terminals arranged on the circuit board, and a flexible outer skin wrapping the circuit board. The intermediate connection assembly comprises an intermediate joint, which comprises a body, light strip grooves are provided at both ends of the body, and a plurality of pins corresponding to the electric contact terminals are provided in the light strip grooves. The two LED light strips are respectively installed in the light strip grooves, and the pins electrically connect the electric contact terminals corresponding to the two LED light strips. 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.
[0005] The beneficial effects of the present invention are as follows: since the two side walls of the fixing sleeve compress 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, the two side plates of the light strip groove can compress 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. The connection strength between the LED light strip and the middle joint is high, can withstand large tensile force, has good durability, and has a simple structure and is easy to install.
[0006] The present invention 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. A baffle is provided at one end 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. The side panels and the bottom plate are provided with anti-slip teeth facing the inner end of the light strip groove. The pins are fixed on the main body, and their two ends are respectively inserted into the two LED light strips to be electrically connected with their contact terminals. Several mounting holes leading to the two light strip grooves are provided in the main body, and a conductive sleeve is provided in the mounting hole, and the two ends of the sleeve are retracted into the mounting hole; a group of pins are respectively provided in the two light strip grooves, and the pins are inserted in the fixing part, and the fixing part fixes the spacing of the several pins. One end of the two groups of pins are respectively inserted into the two LED light strips to be electrically connected with their contact terminals, and the other ends of the two groups of pins are inserted into the sleeve to be electrically connected to each other. The upper wall and lower wall of the fastening sleeve are clamped on the upper surface and 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. The intermediate joint and the fastening sleeve are made of hard plastic. 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 intermediate joint.
[0010] Figure 4 This is the second structural diagram of the intermediate joint.
[0011] Figure 5 This is a schematic diagram of the assembly drawing of Example 1.
[0012] Figure 6 This is a schematic diagram of the assembly drawing of Example 2.
[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 intermediate connection structure of the LED light strip includes two LED light strips 1 and an intermediate connection component connecting the two LED light strips 1 , wherein the intermediate connection component includes an intermediate joint 2 and a fastening sleeve 3 .
[0017] refer to Figure 5The 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 middle joint 2 is made of hard plastic, including a main body 21, and light strip grooves 22 are provided at both ends of the main body 21. The light strip groove 22 is formed by two opposite side panels 221 and a bottom panel 222 extending from the main body 21. In addition to having the main body 21 as a 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 21 as the inner end and the end away from the main body 21 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 sides 22b of the two side walls 221 are parallel to each other, while their inner sides 22b are inclined toward each other. Sharp anti-slip teeth 25 are provided on the inner sides of the side panels 221 and bottom panel 222, facing the inner ends of the light strip slots 22. The main body 21 is also provided with at least two pins 24, the middle portions of which are fixed within the main body 21, with both ends extending into the two light strip slots 22. In LED light strips that require transmission of control signals, more than two pins 24 may be provided.
[0019] refer to Figure 2 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 retaining plate 34 that engages the end of the light strip slot 22. The other end is a straight-through end. The two side walls 31 of the fastening sleeve 3 are interference-fitted with the two side panels 221 of the light strip slot 22.
[0020] refer to Figure 5The assembly method of the present invention is as follows: first, the two fastening sleeves 3 are respectively attached to the two LED light strips 1, with the straight ends of the fastening sleeves 3 facing the ends of the LED light strips 1; then, the ends of the two LED light strips 1 are aligned with the pins 24 and inserted from the end opening of the light strip slot 22 to the bottom of the light strip slot 22. At this time, the two ends of the two pins 24 are respectively inserted into the two LED light strips 1 and electrically contact the two contact terminals 13 on their circuit boards 21; finally, the fastening sleeve 3 is attached to the light strip slot 22 until its baffle 34 abuts against the end surface of the light strip slot 22. Of course, the side walls 31 of the fastening sleeve 3 can also be set to be inclined relative to each other, and the outer and inner ends of the side walls 221 of the light strip slot 22 are equal in thickness.
[0021] refer to Figure 7 After the LED light strip 1 is connected to the middle joint 2, the two side walls 31 of the fastening sleeve 3 have an interference fit with the two side plates 221 of the light strip groove 22, and the thickness of the outer ends of the side plates 221 is greater than the thickness of the inner ends. The two side walls 31 of the fastening sleeve 3 press the two side plates 221 of the light strip groove 22, making the outer end width L1 of the light strip groove 22 smaller than the inner end width L2. At this time, 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 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 is deformed, 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, and the connection strength of the LED light strip 1 is high and can withstand large tensile forces. Furthermore, because the side walls 221 are made of a 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, further increasing friction. 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 contact terminals 13 of the LED light strip 1 maintain close electrical contact with the pins 24. Because the power connector 1 and the fastening sleeve 3 do not require repeated folding parts, they can be made of hard plastic. The fastening sleeve 3 is a closed ring structure with good integrity, better fastening force and durability. Because the two side walls 31 of the fastening sleeve 3 are parallel to each other and the interference fit structure is provided on the light strip groove 22, the intermediate connector 2 can use two fastening sleeves 3 to fasten the two light strip grooves 22 separately, or a longer fastening sleeve 3 can be used to fasten both light strip grooves 22 simultaneously, allowing greater freedom in the design and use of the fastening sleeve 3.
[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 6 and Figure 8The main body 21 is provided with a plurality of mounting holes 27 leading to the two light strip slots 22. A conductive sleeve 28 is provided in the mounting holes, and both ends of the sleeve 28 are retracted into the mounting holes 27. Each of the two light strip slots 22 is provided with a group of pins 24. The pins 24 are inserted into a fixing portion 241. The fixing portion 241 ensures that the spacing between one end of the pins 24 is equal to the spacing between the electric contact terminals 23 on the LED light strip, and the spacing between the other ends is equal to the spacing between the sleeves 28. The installation method of this embodiment differs from that of Example 1 in that: first, one end of the two groups of pins 24 is inserted into the ends of the two LED light strips 1 respectively, so that they contact the electric contact terminals 23 on the LED light strips 1. Then, the two LED light strips are inserted into the two light strip slots 22 respectively, and the other ends of the pins 24 are inserted into the sleeves 28. Since the sleeve 28 is retracted into the mounting hole 27 , when only the LED light strip 1 at one end of the intermediate joint is replaced, even if the LED light strip 1 at the other end is already connected to the mains, 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 intermediate connection structure for LED light strips, comprising two LED light strips and an intermediate connection assembly thereof. The LED light strips comprise a circuit board, a plurality of electric contact terminals disposed on the circuit board, and a flexible outer skin wrapping the circuit board. The intermediate connection assembly comprises an intermediate joint, which comprises a body having light strip grooves disposed at both ends thereof. The two LED light strips are respectively mounted in the light strip grooves, and the light strip grooves are provided with a plurality of pins corresponding to the electric contact terminals. The pins electrically connect the corresponding electric contact terminals of the two LED light strips. The structure is 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 intermediate connection structure of 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 the inner end thereof.
3. The high-strength intermediate connection structure of the 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 intermediate connection structure of the 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.
5. The high-strength intermediate connection structure of the LED light strip according to claim 1, characterized in that: The middle portion of the pin is fixed on the main body, and both ends of the pin are respectively inserted into the two LED light strips to be electrically connected to their contact terminals.
6. The high-strength intermediate connection structure of the LED light strip according to claim 1, characterized in that: The body is provided with several mounting holes leading to the two light strip grooves, and a conductive sleeve is provided in the mounting hole, with both ends of the sleeve retracted into the mounting hole; a group of pins is provided in each of the two light strip grooves, and the pins are inserted into the fixing part, and the fixing part fixes the spacing between the several pins, one end of the two groups of pins are respectively inserted into the two LED light strips to be electrically connected to their electric contact terminals, and the other ends of the two groups of pins are inserted into the sleeve to be electrically connected to each other.
7. The high-strength intermediate connection structure of the LED light strip according to claim 5 or 6, 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.
8. The high-strength intermediate connection structure of the LED light strip according to claim 1, characterized in that: The intermediate joint and the fastening sleeve are made of hard plastic.