Line pressing structure of down lamp power line

Abstract

The wire pressing structure comprises a radiator, the radiator comprises a heat dissipation bottom wall and a heat dissipation side wall, a lamp panel is installed on the heat dissipation bottom wall, a light source and a power line are arranged on the lamp panel, the radiator is connected with a lamp shell, and the end face of the heat dissipation side wall of the radiator is connected with the upper end face of the lamp shell through a fastener. A notch is formed in the end face of the heat dissipation side wall and / or the upper end face of the lamp shell, the power line extends out of the notch, and the power line is pressed in the notch by the end face of the heat dissipation side wall and the upper end face of the lamp shell. According to the utility model, the end face of the heat dissipation side wall and / or the upper end face of the lamp shell are / is provided with the notch, and the power line is pressed in the notch by the end face of the heat dissipation side wall and the upper end face of the lamp shell, so that special screws are not needed for fixation, no exposed screws exist, and the LED lamp has the advantages of few assembly parts, simplicity in assembly, delicate appearance and the like.

Description

Technical Field

[0001] This utility model relates to LED lighting fixtures, and specifically discloses the wire clamping structure of the power cord for downlights. Background Technology

[0002] The existing downlight power cord clamping structure, referencing a power cord fixing structure for a downlight with patent number 202420067767.5, includes a heat sink comprising a bottom wall and side walls. A lamp plate is mounted on the bottom wall, and an LED light source and a power cord are mounted on the lamp plate. A wire outlet hole is also provided on the bottom wall, through which the power cord extends. A threaded hole perpendicular to the wire outlet hole is provided on the side wall, and a screw for clamping the power cord is disposed in the threaded hole. The existing downlight power cord clamping structure requires the use of specialized screws, which are exposed on the lamp surface, resulting in numerous assembly components, complex assembly, and a rough appearance. Utility Model Content

[0003] Therefore, it is necessary to provide a wire clamping structure for downlight power cords that does not require special screws, has fewer parts, is easy to assemble, and has an exquisite appearance, in order to address the existing technical problems.

[0004] To address the problems in the prior art, this utility model discloses a wire pressing structure for a downlight power cord, including a heat sink. The heat sink includes a heat dissipation bottom wall and a heat dissipation side wall. A lamp plate is mounted on the heat dissipation bottom wall, and a light source and a power cord are disposed on the lamp plate. The heat sink is connected to a lamp housing. The end face of the heat dissipation side wall of the heat sink is connected to the upper end face of the lamp housing by a fastener. A notch is provided on the end face of the heat dissipation side wall and / or the upper end face of the lamp housing. The power cord extends out of the notch and is pressed into the notch by the end face of the heat dissipation side wall and the upper end face of the lamp housing.

[0005] The beneficial effects of this utility model are as follows: Since the heat dissipation sidewall end face and / or the upper end face of the lamp housing are provided with notches, the power cord is pressed into the notches by the heat dissipation sidewall end face and the upper end face of the lamp housing, which does not require the use of special screws for fixing and has no exposed screws. It has the advantages of fewer assembly parts, simple assembly and exquisite appearance.

[0006] As an improvement to this utility model: the notch is located on the heat dissipation sidewall end face of the radiator, and the lamp housing is a cylindrical body with openings at both ends, with an inwardly folded upper edge at its upper end. The power cord is pressed into the notch by the upper edge. This utilizes the greater thickness of the heat dissipation sidewall to increase the strength of the notch, while the upper edge of the lamp housing increases the contact area for pressing the power cord. The fastening element is a screw. The bottom or sidewall of the radiator has several threaded holes extending along the depth direction of the heat dissipation sidewall. The upper edge of the lamp housing has mounting holes corresponding to the threaded holes. The screw passes through the mounting holes from the inside of the lamp housing and is screwed into the threaded holes. There are at least three threaded holes, two of which are close together and symmetrically distributed on both sides of the notch. This use of built-in screws to connect the radiator and the lamp housing improves the appearance quality of the lamp. Several fixing posts are integrally connected to the inner side of the heat dissipation sidewall, and the threaded holes are located in these fixing posts. This increases the strength of the threaded holes. The fixing posts include at least three, with two of them closely and symmetrically distributed on both sides of the notch, thus allowing for greater and more even pressure on the power cord. Positioning posts extending along the depth direction of the heat dissipation sidewall are provided within the heat dissipation bottom wall or sidewall. Positioning holes corresponding to the positioning posts are provided on the upper flange of the lamp housing, and the positioning posts are inserted into these holes; this facilitates easier assembly of the heat sink and lamp housing. The positioning posts are located inside the heat dissipation sidewall and are integrated with it as a single structure, thus increasing the strength of the positioning posts. It also includes an inner ring, a reflector, and a lens. The inner side of the lamp housing is provided with a slot extending circumferentially along the lamp housing. The inner ring has a step extending circumferentially along the inner ring at its upper inner side, and several barbs are provided on the outer side of the inner ring. The upper flange of the lamp housing is connected and fixed to the heat sink by a built-in fastener. The lens is installed on the step of the inner ring. The reflector is installed between the light source and the lens. The inner ring is fixed inside the lamp housing by being snapped into the slot of the lamp housing by the barbs. The reflector and the lens are clamped and fixed between the heat sink and the inner ring. Attached Figure Description

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

[0008] Figure 2 This is one of the schematic diagrams of the assembly structure of this utility model.

[0009] Figure 3 This is a schematic diagram of the structure of the radiator of this utility model.

[0010] Figure 4 This is a cross-sectional view of the lamp housing of this utility model.

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

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

[0013] Figure 7 for Figure 6 A schematic diagram of the structure of section AA in the middle.

[0014] Figure 8 for Figure 6 A schematic diagram of the structure of the BB cross section.

[0015] Figure 9 for Figure 7 A magnified view of point C in the middle.

[0016] Figure 10 for Figure 7 Enlarged view of point D in the middle. Detailed Implementation

[0017] To further understand the features, technical means, specific purposes, and functions of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. The descriptions of component positions (including but not limited to: upper, lower, inner, outer, left, right, etc.) are for reference only when referring to the positions of the components shown in the accompanying drawings. Their purpose is to facilitate understanding of the relative relationships between the components and does not represent an absolute limitation on the scope of protection of this utility model. Those skilled in the art will understand that the description of relative positions may change when the view direction changes, but the essential relative positional relationships between the components remain unchanged.

[0018] refer to Figure 1 and Figure 2 A split downlight includes a heat sink 1, a lamp plate 2 installed inside the heat sink 1, an LED light source 21 and a power cord 22 installed on the lamp plate 2, a lamp housing 3 installed below the heat sink 1, an inner ring 4 installed inside the lamp housing 3, and a reflector 5 and a lens 6 installed inside the inner ring 4.

[0019] refer to Figure 3The radiator 1 is a cylindrical body with an opening at one end, including a heat dissipation bottom wall 11 and a heat dissipation side wall 12 surrounding the bottom wall 11. Heat dissipation fins are provided on the outer sides of the bottom wall 11 and the side wall 12. A notch 13 is provided on the end face of the side wall 12, and anti-slip teeth 131 are provided on the notch 13. Three fixing posts 14 and one positioning post 15 extending along the depth direction are provided on the inner side of the side wall 12. The fixing posts 14 and the positioning post 15 are connected to the side wall 12 as an integral structure. The fixing posts 14 are flush with the side wall 12, and the positioning post 15 is higher than the side wall 12. A threaded hole 16 is provided in each fixing post 14, and two positioning posts 14 and their threaded holes 16 are symmetrically distributed on both sides of the notch 13. Using the above-designed fixing posts 14, positioning posts 15, and threaded holes 16 can reduce the thickness of the side wall 12, increase the space inside the radiator 1, and simultaneously enhance the strength of the fixing posts 14 and the positioning posts 15. Of course, the threaded hole 16 can also be provided in the heat dissipation bottom wall 11 or the heat dissipation side wall 12.

[0020] refer to Figure 4 The lamp housing 3 is a cylindrical body with openings at both ends. The upper edge of the opening has an upward-folded flange 31 that folds inwards, and the lower edge of the opening has a downward-folded flange 32 that folds outwards. The inner side wall of the lamp housing 3 has a mounting groove 33 extending circumferentially along the side wall. The upward-folded flange 31 has mounting holes 34 and positioning holes 35 corresponding to the threaded hole 16 and positioning post 13 of the heat sink 1. The upward-folded flange 31 is used to connect to the heat sink 1, and the downward-folded flange 32 is used to snap the downlight onto the outside of the lamp mounting hole.

[0021] refer to Figure 5 The inner ring 4 is a cylindrical body with openings at both ends. A step 41 is provided on the inner side of the upper opening, surrounding the sidewall of the inner ring 4. Three buckles 42 are evenly distributed around the outer side of the step 41. A barb 43 is provided on the outer side of the inner ring 4 to mate with the mounting groove 33 of the lamp housing 2.

[0022] refer to Figure 1 and Figure 2 The reflector 5 is a horn shape with openings at both ends, the upper opening being smaller than the lower opening. The lens 6 is a circle that mates with the step on the upper opening of the inner ring, and includes a base plate 61 and an optical structure 62 disposed on one side of the base plate 61.

[0023] refer to Figure 1 , Figure 2 , Figures 6 to 10The assembly method of this utility model is as follows: First, apply thermally conductive adhesive to the back of the lamp plate 2, attach the lamp plate 2 to the center of the heat dissipation bottom wall 11 inside the heat sink 1, and pass the power cord 22 of the lamp plate 2 through the notch 13 of the heat dissipation side wall 12; then, assemble the lamp housing 3 to the heat sink 1. During this process, the positioning pin 15 on the heat sink 1 is first inserted into the positioning hole 35 of the lamp housing 3, so that the threaded hole 16 on the heat sink 1 is positioned with the mounting hole 34 on the lamp housing 3. Then, screw 7 is passed through the mounting hole 35 on the upper flange 31 of the lamp housing 3 from the inside and screwed into the threaded hole 16 of the heat sink 1, so that the heat sink 1 and the lamp housing 3 are fixed. At the same time, the upper flange 31 of the lamp housing 3 presses the power cord 22 into the notch 13, and the anti-slip teeth 131 on the notch 13 are fixed. This increases friction and improves the tensile strength of the power cord 22. Then, the lens 6 with the optical structure 62 facing down is clipped onto the step 41 of the inner ring 4, and the buckle 42 on the outside of the step 41 abuts against the upper surface of the lens 6, thus fixing the lens 6 onto the inner ring 4. Next, the upper end of the reflector cup 5 is placed into the heat sink 1, and the light source 21 is positioned inside its upper opening. Finally, the inner ring 4 is inserted from the lower opening of the lamp housing 3 until the barb 43 of the inner ring 4 is engaged with the mounting groove 33 on the inner side of the lamp housing 3. At this time, the base plate 61 of the lens 6 abuts against the lower opening of the reflector cup 5, and the upper opening of the reflector cup 5 abuts against the lamp plate 2. The reflector cup 5 and the lens 6 are then clamped and fixed between the inner ring 4 and the heat sink 1.

[0024] In addition to screws, rivets or bolts can also be used to fasten the upper flange 31 of the lamp housing 3 to the heat sink 1. The notch can also be located on the upper surface of the lamp housing, or half on the end face of the heat sink sidewall and half on the upper surface of the lamp housing, as long as a cable outlet hole with an interference fit is formed on the mating surface of the lamp housing and the heat sink after installation. Since the heat sink sidewall has high strength and is easy to machine with anti-slip teeth, this invention preferably places the notch on the end face of the heat sink sidewall, and the upper flange of the lamp housing 3 can also provide a larger mating surface, increasing the tensile strength of the power cable.

[0025] refer to Figure 8 This invention features a notch on the heat dissipation sidewall and / or the upper surface of the lamp housing. The power cord is pressed into the notch by the heat dissipation sidewall and the upper surface of the lamp housing, eliminating the need for special screws and removing any exposed screws. This results in fewer assembly parts, simpler assembly, and a more refined appearance. Furthermore, the symmetrical distribution of two threaded holes on both sides of the notch enhances the clamping force on the power cord and maintains a balanced force distribution on the cord.

[0026] refer to Figures 6 to 8This utility model features an inwardly folded upper edge at the top of the lamp housing, which is connected to the heat sink via an internal fastener. The inner ring inside the lamp housing is connected to the lamp housing via a snap fastener. The reflector and lens are clamped and fixed between the inner ring and the heat sink. There are no exposed fasteners on the lamp body, resulting in an elegant appearance and simple assembly.

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

Claims

1. A wire clamping structure for a downlight power cord, comprising a heat sink, the heat sink including a heat sink bottom wall and a heat sink side wall, a lamp plate mounted on the heat sink bottom wall, a light source and a power cord disposed on the lamp plate, and a lamp housing connected to the heat sink, characterized in that: The heat dissipation sidewall end face of the heat sink is connected to the upper end face of the lamp housing by a fastener. The heat dissipation sidewall end face and / or the upper end face of the lamp housing are provided with a notch. The power cord extends out from the notch and is pressed into the notch by the heat dissipation sidewall end face and the upper end face of the lamp housing.

2. The wire clamping structure of the downlight power cord according to claim 1, characterized in that: The notch is provided on the heat dissipation side wall end face of the radiator. The lamp housing is a cylindrical body with openings at both ends, and its upper end is provided with an inwardly folded-up flange. The power cord is pressed into the notch by the folded-up flange.

3. The wire clamping structure of the downlight power cord according to claim 2, characterized in that: The fastening component is a screw. The heat dissipation bottom wall or heat dissipation side wall is provided with a plurality of threaded holes extending along the depth direction of the heat dissipation side wall. The upper flange of the lamp housing is provided with mounting holes corresponding to the threaded holes. The screw passes through the mounting hole from the inside of the lamp housing and is screwed into the threaded hole.

4. The wire clamping structure of the downlight power cord according to claim 3, characterized in that: The inner side of the heat dissipation sidewall is provided with several fixing posts that are integrally connected to it, and the threaded holes are provided in the fixing posts.

5. The wire clamping structure of the downlight power cord according to claim 4, characterized in that: The fixed posts include at least three, two of which are close to each other and symmetrically distributed on both sides of the notch.

6. The wire clamping structure of the downlight power cord according to claim 3, characterized in that: The threaded holes include at least three, two of which are close to each other and symmetrically distributed on both sides of the notch.

7. The wire clamping structure of the downlight power cord according to claim 3, characterized in that: The heat dissipation bottom wall or heat dissipation side wall is provided with a positioning post extending along the depth direction of the heat dissipation side wall, and the upper flange of the lamp housing is provided with a positioning hole corresponding to the positioning post, and the positioning post is inserted into the positioning hole.

8. The wire clamping structure of the downlight power cord according to claim 7, characterized in that: The positioning post is located on the inner side of the heat dissipation sidewall and is connected to the heat dissipation sidewall as an integral structure.

9. The wire clamping structure of the downlight power cord according to claim 3, characterized in that: It also includes an inner ring, a reflector, and a lens. The inner side of the lamp housing is provided with a slot extending circumferentially along the lamp housing. The inner ring has a step extending circumferentially along the inner ring at its upper inner side, and several barbs are provided on the outer side of the inner ring. The upper flange of the lamp housing is connected and fixed to the heat sink by a built-in fastener. The lens is installed on the step of the inner ring. The reflector is installed between the light source and the lens. The inner ring is fixed inside the lamp housing by being snapped into the slot of the lamp housing by the barbs. The reflector and the lens are clamped and fixed between the heat sink and the inner ring.

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