Middle connecting structure of LED lamp strip

Abstract

The utility model discloses a middle connecting structure of an LED lamp strip, which comprises the LED lamp strip, a connecting piece and a fastening sleeve, the connecting piece comprises a bottom plate, a conductive strip and a pressing strip, a clamping groove is further arranged on the connecting piece, 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 of the connecting head and the conductive strip, and the pressing strip is arranged on the bottom plate of the connecting head. The fastening sleeve is connected to the connector in a sleeved mode, the clamping strip of the fastening sleeve is clamped into the clamping groove of the connecting piece to fix the fastening sleeve and the connecting piece, the fastening sleeve presses the pressing strip, the pressing strip fixes the LED lamp strip, and the conductive strip makes electric contact with the wiring terminal of the LED lamp strip. According to the utility model, the fixation of the circuit board and the electric contact of the conductive strip and the wiring terminal of the circuit board are realized through the pressure generated by the interference fit of the fastening sleeve and the connecting piece, and the fixation of the fastening sleeve and the connecting piece is realized through the clamping connection of the clamping strip of the fastening sleeve and the clamping groove of the connecting piece; the LED lamp strip has the advantages of being high in tensile capacity and reliable in electric connection.

Description

Technical Field

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

[0002] The reference patent number of the intermediate connector of the existing LED light strip is 2022215793400, which is a kind of LED light strip welding-free connector, which includes a body, a mounting groove is opened in the body, a conductive strip is installed in the middle of the mounting groove, a lock is arranged on the left side of the body, a box cover is arranged on the right side of the body, and buckles are arranged at the corresponding positions of the box cover and the lock, and the LED light strip is fixed in the body by the buckle. Since the box cover and the body are connected by a connecting part that is connected to the two as one, in order to make the cover body easy to fold, the thickness of the connecting part is relatively thin, and the box cover and the body need to be made of materials with good toughness and low hardness, and the pressing force of the intermediate connector on the LED light strip is relatively weak; in addition, since the fixation of the box cover and the body and the pressing of the box cover on the LED light strip are dependent on the locking force of the lock, the lock is burdened with a large burden, and it is also easy to cause the lock to loosen, so the intermediate connector of the existing LED light strip has the disadvantages of poor tensile strength of the LED light strip, unreliable electrical contact of the conductive strip, and fire hazards. Utility Model Content

[0003] Based on this, it is necessary to provide an intermediate connection component 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 an intermediate connection structure of an LED light strip, comprising a plurality of LED light strips and an intermediate 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, the intermediate connection assembly comprises a connector and a fixing sleeve, the connector comprises a plurality of connectors, the connector comprises a bottom plate, a plurality of conductive strips corresponding to the wiring terminals of the LED light strip are mounted above the bottom plate, a plurality of pressure strips corresponding to the conductive strips are arranged above the conductive strips, the conductive strips corresponding to the respective connectors are electrically connected to each other, a gap is provided between the conductive strips and the bottom plate, and a plurality of pressure strips corresponding to the conductive strips are arranged above the conductive strips. A card slot is also provided; the inner cavity of the fixing sleeve is provided with a card strip that cooperates with the card slot, the inner cavity includes an upper side surface, a lower side surface, a left side surface and a right side surface, the end of the fixing sleeve connected to the 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 card strip of the fixing sleeve is inserted into the card slot 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 connector, the upper side surface of the inner cavity presses the pressure strip, the pressure strip presses the circuit board of the LED light strip 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: in the utility model, the fixation of the circuit board and the electrical contact between the conductive strip and the circuit board terminal are achieved through the pressure generated by the interference fit between the fixing sleeve and the connecting piece, and the fixing sleeve is an annular closed structure, and the pressure is strong and durable; and the fixation of the fixing sleeve and the connecting piece is achieved by the clamping connection between the clamping strip of the fixing sleeve and the clamping groove of the connecting piece, and the function of the clamping connection is only to prevent the fixing sleeve from slipping out of the connecting piece, and its function is single, the burden is lower, and the clamping connection is more reliable; 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 between the inner end of the inner cavity of the tightening sleeve and the connector is less than the interference between the outer end and the connector. The inner end of the bottom plate is provided with a fixing portion, the plurality of conductive strips are provided on the fixing portion, and a plug-in slot is provided on the upper side of the fixing portion; the pressure strip is connected through the mounting portion, and a plug-in 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 plug-in slot 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 fixing portion, the second card slot is provided on the upper side of the mounting portion of the pressure strip, the card strip is provided on the upper and lower sides of the inner end of the inner cavity of the tightening sleeve, and the card strip is inserted into the first card slot and the second card slot. The lower side of the tail end of the pressure strip is provided with anti-slip teeth and contacts, 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. Guide ribs are arranged on both sides of the fixing part, and guide grooves cooperating with the guide ribs are arranged on the left and right sides of the inner end of the inner cavity of the fixing sleeve, and the guide ribs are inserted into the guide grooves. The pressure strip and the bottom plate are an integral injection molding structure. The fixing sleeve is made of hard material. The connecting piece includes two connectors arranged in a "one" shape or, or two connectors intersecting in an "L" shape, or three connectors intersecting in a "T" shape, or four connectors intersecting in a "cross" shape. 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 "I"-shaped connecting piece of the utility model.

[0010] Figure 4This is the second structural schematic diagram of the "I"-shaped connecting piece of the utility model.

[0011] Figure 5 It is a structural schematic diagram of the "L"-shaped connecting piece of the utility model.

[0012] Figure 6 It is a structural schematic diagram of the "T"-shaped connector of the utility model.

[0013] Figure 7 It is a structural schematic diagram of the "cross" shaped connecting piece of the utility model.

[0014] Figure 8 This is one of the structural schematic diagrams of the layering strip of the utility model.

[0015] Fig. 9 This is the second structural schematic diagram of the layering strip of the utility model.

[0016] Fig.10 It is a partial cross-sectional view of the fastening sleeve of the utility model.

[0017] Fig.11 for Figure 2 Schematic diagram of the AA section.

[0018] Fig.12 for Fig.11 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] refer to Figure 1An intermediate connection structure of an LED light strip includes a connection piece 2, a pressure strip 3 and a fastening sleeve 4.

[0022] refer to Figures 1 to 7 The connector 2 includes a plurality of connectors 20, and the connectors 20 include a bottom plate 21. A fixing portion 22 is provided at the inner end of the bottom plate 21. A conductive strip 23 corresponding to the wiring terminal 13 of the LED light strip is provided on the fixing portion 22 and located on the front of the bottom plate 21. The conductive strips 23 corresponding to the wiring terminals 13 of the LED light strip are electrically connected to each other. A plug-in slot 24 is also provided on the fixing portion 22. The tail end of the conductive strip 23 faces the outer end of the bottom plate 21, and there is a gap between the conductive strip 23 and the bottom plate 21. A first card slot 25 is provided on the back of the bottom plate 21 near the fixing portion 22. Guide ribs 26 are provided on both sides of the fixing portion 22. When the LED light strip 1 includes only one set of positive and negative power supply circuits, the connector 20 includes only two conductive strips 23; when the LED light strip includes multiple sets of positive and negative power supply circuits or signal circuits, multiple conductive strips 23 can also be provided on the connector 20.

[0023] refer to Figures 3 to 7 When the intermediate connecting assembly is used to connect two LED light strips on the same straight line, the connecting member 2 is in the shape of a straight line, that is, it includes two connecting heads 20 arranged on the same straight line, see Figure 3 When the intermediate joint is used to connect two LED light strips intersecting at a certain angle, the connector 2 includes two connectors 20 intersecting at a certain angle, the most common shape of which is an "L" shape, see Figure 5 When the intermediate joint is used to connect three LED light strips intersecting at a certain angle, the connector 2 includes three connectors 20 intersecting at a certain angle, the most common shape of which is a "T" shape, see Figure 6 When the intermediate joint is used to connect four LED light strips intersecting at a certain angle, the connector 2 includes four connectors 20 intersecting at a certain angle, the most common shape of which is a "cross" shape, see Figure 7 When the intermediate joint is used to connect more LED light strips at other angles, the connector can also be provided with more matching connectors.

[0024] refer to Figure 8 and Fig. 9 The pressure strip 3 includes a plurality of pressure strips corresponding to the conductive strip 23, and the plurality of pressure strips 3 are connected through a mounting portion 31. A pin 32 is provided at the lower side of the mounting portion 31 to cooperate with the plug slot 24 of the connector 2. A second slot 33 is provided at the upper side of the mounting portion 31. Anti-skid teeth 34 and a contact 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 contact 35 is equal to the thickness of the conductive strip 23. The pressure strip 3 can also be injection molded into an integral structure with the fixing portion 22 of the connector 2.

[0025] refer to Fig.10 The fixing sleeve 4 has an inner cavity 40 that is interference-fitted with the 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 fixing 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 21, 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 26. One end of the fixing sleeve 4 connected to the 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 tightening sleeve and the connecting head 2 is smaller than the interference fit between the outer end 4b and the connecting head 2. In this way, on the one hand, the tightening sleeve 4 is easier to install, and on the other hand, the tightening sleeve 4 exerts greater pressure on the pressure strip 3.

[0026] refer to Figure 1 , Figure 2 , Fig.11 and Fig.12 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 21 of the connector 20 and the conductive strip 23, and the terminal 13 on the circuit board 11 is aligned with the conductive strip 23; then the pin 32 of the pressure strip 3 is inserted into the plug-in slot 24 of the fixing portion 22, and the pressure strip 3 is aligned with the conductive strip 23 of the connector 2, and then the fixing sleeve 4 is sleeved to the connector 20, when the inner end 4a of the fixing sleeve 4 is close to the fixing portion 22 of the connector 20, the guide ribs 26 on both sides of the fixing portion 22 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 connector 2. At this time, the upper side surface 41 of the inner cavity 4a of the fastening sleeve 4 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 connecting piece 2, and the contact 35 of the pressure strip 3 is pressed on the conductive strip 23, so that the conductive strip 23 is in electrical contact with the terminal 13 on the circuit board 11.

[0027] 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 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 connector 2 to avoid hard contact, thereby protecting the circuit board and providing a more lasting fixing force on the circuit board. Since the pressure of the tightening sleeve 4 on the LED light strip mainly comes from the outer end of the inner cavity of the tightening sleeve, the clamping strip is arranged at the inner end of the tightening sleeve, which is easier to install, the tightening sleeve 4 and the 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 23, the pressure of the pressure strip 3 on the circuit board 11 and the conductive strip 23 can be the same. Since the outer surface of the tightening sleeve 4 is flush with the outer surface of the fixing portion 24 of the connector 2, the product is more beautiful as a whole.

[0028] The beneficial effects of the utility model are as follows: in the utility model, the fixation of the circuit board and the electrical contact between the conductive strip and the circuit board terminal are achieved through the pressure generated by the interference fit between the fixing sleeve and the connecting piece, and the fixing sleeve is an annular closed structure, and the pressure is strong and durable; and the fixation of the fixing sleeve and the connecting piece is achieved by the clamping connection between the clamping strip of the fixing sleeve and the clamping groove of the connecting piece, and the function of the clamping connection is only to prevent the fixing sleeve from slipping out of the connecting piece, and its 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.

[0029] 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. An intermediate connection structure of an LED light strip, comprising a plurality of LED light strips and an intermediate 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 intermediate connection component comprises a connector and a fixing sleeve, the connector comprises a plurality of connectors, the connector comprises a bottom plate, a plurality of conductive strips corresponding to the wiring terminals of the LED light strip are installed above the bottom plate, a plurality of pressure strips corresponding to the conductive strips are arranged above the conductive strips, the conductive strips corresponding to the connectors are electrically connected to each other, a gap is provided between the conductive strips and the bottom plate, and a card slot is also provided on the connector; the inner cavity of the fixing sleeve is provided with a card strip matching the card slot, the inner cavity comprises 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 connector is an inner end, and the other end is an 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 card strip of the fixing sleeve is inserted into the card slot 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 connector, the upper side surface of the inner cavity presses the pressure strip, the pressure strip presses the circuit board of the LED light strip to fix it, and the pressure strip also presses the conductive strip to make it electrically contact with the wiring terminals of the circuit board.

2. The intermediate 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 connector is smaller than the interference fit between the outer end and the connector.

3. The intermediate connection structure of an LED light strip according to claim 2, characterized in that: A fixing portion is provided at the inner end of the bottom plate, the plurality of conductive strips are provided on the fixing portion, and a plug-in slot is provided on the upper side of the fixing portion; the pressure strip is connected via an installation portion, a pin cooperating with the plug-in slot is provided on the lower side of the installation portion, and the pressure strip is inserted into the plug-in slot and fixed by the pin.

4. The intermediate connection structure of an 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 fixing part, the second card slot is arranged on the upper side of the mounting part of the pressure strip, the card strip is arranged on the upper and lower side surfaces of the inner end of the inner cavity of the fixing sleeve, and the card strip is inserted into the first card slot and the second card slot.

5. The intermediate 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 intermediate 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 intermediate connection structure of an LED light strip according to claim 4, characterized in that: The fixing portion is provided with guide ribs on both sides, and the inner end of the inner cavity of the fastening sleeve is provided with guide grooves matching with the guide ribs on the left and right sides, and the guide ribs are inserted into the guide grooves.

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

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

10. The intermediate connection structure of an LED light strip according to claim 1, characterized in that: The connecting piece includes two connecting heads arranged in a straight line or a straight line, or two connecting heads intersecting in an L shape, or three connecting heads intersecting in a T shape, or four connecting heads intersecting in a cross shape.

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