Plug-in type down lamp structure
The design of movable springs and snap-fit protrusions in the plug-in downlight structure solves the problem of time-consuming and laborious installation and disassembly of downlights, enabling quick assembly and disassembly and efficient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN GOOD BROTHERS LIGHTING & ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-29
AI Technical Summary
The back cover of the existing downlight is fixedly connected to the lamp tube by internal and external threads, which is time-consuming and laborious to install and disassemble, affecting maintenance efficiency.
It adopts a plug-in structure for the lamp holder and lamp tube, and uses the cooperation of movable springs and buckle protrusions to achieve a detachable and fixed connection between the lamp holder and the lamp tube. It can be installed and removed by pushing or pulling.
It enables quick installation and removal of lamp holders and lamp tubes, improving maintenance efficiency and ease of use.
Smart Images

Figure CN224301971U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting technology, specifically to a plug-in downlight structure. Background Technology
[0002] Downlights are a common type of indoor decorative lighting fixture, typically embedded in the ceiling, projecting light downwards. This direct light distribution enhances the soft ambiance of a space, making them suitable for homes, hotels, cafes, offices, and other similar locations. Currently, the back cover of most downlights on the market is fixed to the lamp holder using internal and external threads. This requires workers to rotate the screws multiple times during installation and removal, which is time-consuming and labor-intensive, impacting maintenance efficiency and presenting certain limitations. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a plug-in downlight structure that is simple in structure, easy and quick to assemble and disassemble, highly efficient in maintenance, and convenient to use.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A plug-in downlight structure includes a separate lamp holder and a lamp tube. The bottom of the lamp holder is formed with an annular extension wall, and the annular extension wall has several sets of clearance grooves to allow several sets of movable springs to be formed on the annular extension wall. The free end of the movable spring has a snap-fit protrusion. The inner wall of the lamp tube is formed with snap-fit ribs. The annular extension wall is inserted into the lamp tube. The bottom of the lamp holder abuts against the top of the lamp tube. The snap-fit protrusions and snap-fit ribs engage to allow the lamp holder and the lamp tube to be detachably and fixedly connected.
[0006] As a further improvement to the above technical solution:
[0007] The lamp holder is provided with a rotating connector, and the lamp holder is formed with a cavity for accommodating the rotating connector. The rotating connector has a first hinge through hole, and the cavity has a second hinge through hole. A hinge shaft passes through the first hinge through hole and the second hinge through hole so that the rotating connector is hinged to the lamp holder.
[0008] The rotating connector has a threading channel inside, and the annular extension wall has a threading opening that communicates with the cavity.
[0009] The lamp holder has several sets of heat dissipation slots.
[0010] The number of sets of the movable spring and the buckle protrusions is set to four.
[0011] Compared with the prior art, the advantages of this utility model are:
[0012] This utility model's plug-in downlight structure includes a lamp holder and a lamp tube. The bottom of the lamp holder has an annular extension wall with a movable spring formed on it. The free end of the movable spring has a snap-fit protrusion. The inner wall of the lamp tube has a snap-fit rib. During the process of inserting the annular extension wall into the lamp tube or pulling the annular extension wall out of the lamp tube, the snap-fit rib will squeeze the snap-fit protrusion and cause the movable spring to elastically deform inward, making it easy for the snap-fit protrusion to slide over the snap-fit rib. This allows the lamp holder and the lamp tube to form or release a snap. Thus, during installation or disassembly, the user only needs to push or pull on the lamp tube to complete the installation or disassembly. Compared with the existing technology that uses internal and external threads for fixed connection, the operation is simpler and has the advantages of simple structure, convenient and quick installation and disassembly, high maintenance efficiency, and good ease of use. Attached Figure Description
[0013] Figure 1 This is a structural diagram showing the disassembled state of a plug-in downlight.
[0014] Figure 2 This is a cross-sectional structural diagram of a plug-in downlight assembly.
[0015] Figure 3 This is a schematic diagram of the structure of the lamp holder and the rotating connector.
[0016] Legend:
[0017] 1. Lamp holder; 101. Annular extension wall; 102. Clearance groove; 103. Movable spring; 104. Snap-on protrusion; 105. Cavity; 106. Second hinged through hole; 107. Wire passage; 108. Heat dissipation groove; 2. Lamp tube; 201. Snap-on protrusion; 3. Rotating connector; 301. First hinged through hole; 302. Wire passage. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] like Figures 1 to 3As shown, the plug-in downlight structure of this embodiment includes a lamp holder 1 and a lamp tube 2, which are separately arranged. The bottom of the lamp holder 1 is formed with an annular extension wall 101. Several sets of clearance grooves 102 are provided on the annular extension wall 101 so that several sets of movable spring pieces 103 are formed on the annular extension wall 101. The free end of the movable spring piece 103 is provided with a snap-fit protrusion 104. The inner wall of the lamp tube 2 is formed with a snap-fit protrusion 201. The annular extension wall 101 is inserted into the lamp tube 2. The bottom of the lamp holder 1 abuts against the top of the lamp tube 2. The snap-fit protrusion 104 and the snap-fit protrusion 201 are engaged to make the lamp holder 1 and the lamp tube 2 detachably and fixedly connected. The plug-in downlight structure includes a lamp holder 1 and a lamp tube 2. The bottom of the lamp holder 1 is provided with an annular extension wall 101, and a movable spring piece 103 is formed on the annular extension wall 101. The free end of the movable spring piece 103 is provided with a snap-fit protrusion 104. The inner wall of the lamp tube 2 is formed with a snap-fit rib 201. During the process of inserting the annular extension wall 101 into the lamp tube 2 or pulling the annular extension wall 101 out of the lamp tube 2, the snap-fit rib 201 will squeeze the snap-fit protrusion 104 and cause the movable spring piece 103 to elastically deform inward, so that the snap-fit protrusion 104 can slide over the snap-fit rib 201, thereby forming or releasing the snap between the lamp holder 1 and the lamp tube 2. Thus, during the installation or disassembly process, the user only needs to push or pull on the lamp tube 2 to complete the installation or disassembly. Compared with the existing technology that uses internal and external threads for fixed connection, the operation is more convenient and has the advantages of simple structure, convenient and quick installation and disassembly, high maintenance efficiency, and good ease of use.
[0020] Preferably, the lamp holder 1 is provided with a rotating connector 3, and the lamp holder 1 has a cavity 105 formed for accommodating the rotating connector 3. The rotating connector 3 has a first hinge through hole 301, and a second hinge through hole 106 is formed in the cavity 105. A hinge shaft passes through the first hinge through hole 301 and the second hinge through hole 106, so that the rotating connector 3 is hingedly connected to the lamp holder 1. In this embodiment, the lamp holder 1 and the rotating connector 3 are hingedly connected, and the user can adjust the illumination angle of the lamp tube 2 by rotating the lamp holder 1, which can meet the usage needs of different illumination angles and has high flexibility of use.
[0021] Preferably, the rotating connector 3 has a wire-passing channel 302 inside, and the annular extension wall 101 has a wire-passing opening 107 communicating with the cavity 105. In this embodiment, the power cord passes through the wire-passing channel 302 and through the wire-passing opening 107 into the lamp holder 1, avoiding the power cord from becoming tangled and making the appearance more aesthetically pleasing.
[0022] Preferably, the lamp holder 1 has several sets of heat dissipation grooves 108, which can effectively improve the heat dissipation efficiency of the light-emitting element in the lamp holder 1 and help extend its service life.
[0023] In this embodiment, the number of groups of movable spring 103 and snap-fit protrusion 104 is set to four; in other embodiments, the number of groups of movable spring 103 and snap-fit protrusion 104 may also be set to two, three or more groups according to actual application requirements, and is not limited to this embodiment.
[0024] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A plug-in downlight structure, characterized in that, The lamp includes a separate lamp holder (1) and a lamp tube (2). The bottom of the lamp holder (1) is formed with an annular extension wall (101). Several sets of clearance grooves (102) are provided on the annular extension wall (101) so that several sets of movable spring pieces (103) are formed on the annular extension wall (101). The free end of the movable spring piece (103) is provided with a snap-fit protrusion (104). The inner wall of the lamp tube (2) is formed with a snap-fit protrusion (201). The annular extension wall (101) is inserted into the lamp tube (2). The bottom of the lamp holder (1) abuts against the top of the lamp tube (2). The snap-fit protrusion (104) and the snap-fit protrusion (201) snap together so that the lamp holder (1) and the lamp tube (2) can be detachably and fixedly connected.
2. The plug-in downlight structure according to claim 1, characterized in that, The lamp holder (1) is provided with a rotating connector (3), and the lamp holder (1) is formed with a cavity (105) for accommodating the rotating connector (3). The rotating connector (3) is provided with a first hinge through hole (301), and the cavity (105) is provided with a second hinge through hole (106). A hinge shaft passes through the first hinge through hole (301) and the second hinge through hole (106) so that the rotating connector (3) is hinged to the lamp holder (1).
3. The plug-in downlight structure according to claim 2, characterized in that, The rotating connector (3) has a wire passage (302) inside, and the annular extension wall (101) has a wire opening (107) communicating with the cavity (105).
4. The plug-in downlight structure according to claim 3, characterized in that, The lamp holder (1) has several sets of heat dissipation slots (108).
5. The plug-in downlight structure according to any one of claims 1 to 4, characterized in that, The number of sets of the movable spring (103) and the snap-fit protrusions (104) is set to four.