A luminaire tail cover device and a luminaire

Abstract

The application relates to the technical field of lighting devices, and discloses a lamp tail cover device and a lamp, wherein the lamp tail cover device comprises a lamp tail cylinder body, a main plate, a limiting nut and a wire cover; the lamp tail cylinder body is sequentially provided with a first thread, an assembly hole and a limiting protrusion in the axial direction; the main plate is arranged in the lamp tail cylinder body; the main plate is provided with a fitting socket opposite to the assembly hole; the limiting nut and the wire cover are both slidably sleeved on the lamp tail cylinder body; the inner wall of the limiting nut is provided with a second thread, and the second thread is engaged with the first thread; the wire cover is configured in such a way that when the limiting nut is screwed to the end of the first thread, the wire cover is pushed above the assembly hole, and one side of the wire cover is in abutment with the limiting protrusion, and the other side is in abutment with the limiting nut. Through screwing and unscrewing of the limiting nut, the fixing and unlocking actions of the wire cover are realized, which is beneficial to the purpose of quickly disassembling and assembling the plug-in parts, and the stability of the overall structure in the assembled state is considered.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, and in particular to a lamp tail cover device and a lamp. Background Technology

[0002] Lighting fixtures, as common lighting equipment, are widely used in various scenarios such as industry, commerce, homes, and outdoor work. Currently, there are two main traditional switch configurations for controlling lighting fixtures. One is to directly fix the switch to the end cover assembly of the lighting fixture; the other is to use a remote switching device, which connects an independent remote switch to the end cover assembly of the lighting fixture via a cable and plug or connector, allowing users to control the lighting fixture from a distance. This split structure, to some extent, solves the limitation of close-range operation and expands the application range of lighting fixtures.

[0003] However, the connection structure between the remote switching device and the lamp in the existing technology mostly relies on conventional plug-in components. In outdoor use environments, lamps are often affected by various external factors such as vibration, wind pulling, and accidental contact by people or equipment, which can easily lead to loosening, poor contact, etc. The stability of the device structure is insufficient, the reliability of the connection is low, and it affects the normal use of the lamp.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lamp tail cover device and a lamp, which aims to solve the problem that the reliability of the connection is insufficient when the remote switch device is connected to the tail of the existing lamp, which is prone to poor contact or loosening, thus affecting the normal use of the lamp.

[0006] The technical solution of the present invention is as follows: A lamp tail cap device, comprising: The lamp tail cylinder has a first thread, an assembly hole and a limiting protrusion arranged sequentially along the axial direction. The main board is located inside the lamp tail cylinder; the main board is provided with a component connector facing the mounting hole; Both the limiting nut and the wire cover are slidably fitted onto the lamp tail cylinder; the inner wall of the limiting nut is provided with a second thread, which engages with the first thread; the wire cover is configured such that when the limiting nut is screwed to the end of the first thread, the wire cover is pushed above the mounting hole, and one side of the wire cover abuts against the limiting protrusion, and the other side abuts against the limiting nut.

[0007] The lamp tail cover device, wherein the lamp tail cylinder is further provided with an annular groove, the annular groove extending circumferentially along the lamp tail cylinder and located between the first thread and the mounting hole; The lamp tail cover device also includes a first rubber ring, which is fitted inside the annular groove and used to abut against the limiting nut.

[0008] The lamp tail cover device includes a wire avoidance groove formed on the limiting protrusion, and the wire avoidance groove and the mounting hole are arranged sequentially along the axial direction of the lamp tail cylinder.

[0009] The lamp tail cap device, wherein the lamp tail cylinder includes: Taillight connector; The tail cap is rotatably fitted onto the lamp tail connector; the main board is located inside the tail cap; the limiting nut and the wire cover are both assembled on the tail cap.

[0010] The lamp tail cover device, wherein the rear end of the lamp tail connector is provided with a connecting part, and the connecting part is provided with an annular first assembly groove. The front end of the tail cap is provided with a docking part, which is inserted into the connecting part; and the docking part is provided with an annular second assembly groove; the second assembly groove and the first assembly groove are arranged opposite to each other to form a limiting channel. The lamp tail cover device further includes a limiting member, which is inserted into the limiting channel and simultaneously abuts against the first assembly groove and the second assembly groove to lock the docking part, so as to connect the lamp tail connector and the tail cover into one piece.

[0011] The lamp tail cover device, wherein the tail cover is provided with a through hole, one end of the through hole extends to the outer surface of the tail cover and the other end extends to the inner wall of the tail cover to connect with the limiting channel; The perforation extends in a direction tangent to the limiting channel; the perforation is used to insert and guide the limiting member into the limiting channel.

[0012] The lamp tail cover device, wherein the connecting part is provided with an annular limiting groove, the limiting groove being located at the front end of the first assembly groove; The lamp tail cover device also includes a second rubber ring, which is fitted inside the limiting groove and used to abut against the mating part.

[0013] The lamp tail cover device further includes a corrugated gasket, which is embedded in the front end of the tail cover and is used to abut against the connecting part.

[0014] In the aforementioned lamp tail cover device, the limiting member is a memory steel wire.

[0015] This application also discloses a lamp, which includes a main body, a remote switch device, and a lamp tail cover device as described above. The lamp tail cover device is connected to the main body and is disposed at the rear end of the main body. The remote switch device is detachably inserted into the mounting hole of the lamp tail cover device.

[0016] Compared with the prior art, the embodiments of the present invention have the following advantages: The lamp tail cap device disclosed in this invention can be connected to accessories, such as a remote switch device, through mounting holes on the lamp tail cylinder. The remote switch device is plugged into the accessory socket and communicates with the main board, thereby realizing remote control. In use, the connection between the limiting nut and the lamp tail cylinder is realized through the engagement of the first thread and the second thread, and the limiting nut can be screwed in or out along the axial direction of the lamp tail cylinder.

[0017] When the limit nut is screwed to the very end of the first thread, the wire cover is pushed above the mounting hole, covering the remote switch device and preventing it from loosening, thus reducing the possibility of poor contact. Furthermore, during use, the wire cover is restrained on both sides by the limit nut and the limit protrusion, preventing it from moving and further improving structural stability. When removing the remote switch device, simply unscrew the limit nut to loosen the wire cover, allowing it to move forward and expose the mounting hole for easy removal.

[0018] In addition, the lamp tail cylinder can adopt a split structure, with a lamp tail connector to fix and connect the main body of the lamp. The tail cover and the lamp tail connector can rotate relative to each other, which can realize the angle adjustment of the mounting hole. By adjusting the direction of the mounting hole, the direction of the accessory insertion can be adjusted, thereby achieving the purpose of adjusting the placement direction of the accessories and improving the flexibility of the lamp tail cover device.

[0019] In summary, this invention, by setting a limiting nut and a wire cover on the lamp tail cylinder, can achieve both quick disassembly and assembly of accessories, and ensure the reliability of the equipment during use, making it convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the structure of the lamp tail cover device in this invention; Figure 2 This is an exploded view of the structure of the lamp tail cover device in this invention; Figure 3 This is a cross-sectional view of the lamp tail cap device along the axial direction in this invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the structure of the lamp tail connector in this invention; Figure 6 This is a schematic diagram of the tail cap structure in this invention; Figure 7 This is a schematic diagram of the structure of the lamp in this invention; Figure 8 This is an exploded view of the structure of the lamp in this invention.

[0022] Among them, 10, lamp tail cylinder; 11, first thread; 12, assembly hole; 13, limiting protrusion; 131, wire avoidance groove; 14, support platform; 15, annular groove; 16, lamp tail connector; 161, internal thread; 162, sealing ring; 163, connecting part; 1631, limiting groove; 164, first assembly groove; 17, tail cap; 171, mating part; 172, second assembly groove; 173, through hole; 20, main board; 21, accessory socket; 30, limiting nut; 31, second thread; 40, wire cover; 41, clearance opening; 50, first rubber ring; 60, limiting component; 70, second rubber ring; 80, wave gasket; 90, main body; 100, remote switch device; 101, connector; 102, wire. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0025] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0026] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0027] For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to encompass not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways, and the spatial relational terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] In one embodiment of this invention application, a lamp tail cap device is disclosed for use in lighting equipment such as flashlights, lasers, searchlights, headlamps, and tactical lights.

[0030] See Figure 1 and Figure 2 The lamp tail cover device disclosed in this embodiment includes a lamp tail cylinder 10, a main board 20, a limiting nut 30, and a wire cover 40. The lamp tail cylinder 10 is provided with a first thread 11, a mounting hole 12, and a limiting protrusion 13 sequentially along the axial direction. Accessories can be inserted through the mounting hole 12 to increase the functionality of the lamp. For example, accessories can be a remote switch device 100, a power supply, a signal receiver, etc. By adding accessories, the lamp can be remotely controlled for convenient use.

[0031] Specifically, the main board 20 is disposed inside the lamp tail cylinder 10, and the main board 20 is provided with an accessory socket 21 facing the mounting hole 12. That is to say, when an accessory is inserted into the mounting hole 12 and matches with the accessory socket 21, an electrical signal connection can be realized between the accessory and the main board 20. The main board 20 disclosed in this embodiment includes, but is not limited to, a printed circuit board (PCB). A control chip is integrated on the main board 20 to receive signals input by the accessory and output control signals to control the lamp to turn on or off based on the signals, thereby realizing remote control operation of the lamp's on / off state.

[0032] like Figure 2 As shown, in this embodiment, both the limiting nut 30 and the wire cover 40 are slidably fitted onto the lamp tail cylinder 10; the inner wall of the limiting nut 30 is provided with a second thread 31, which engages with the first thread 11; the wire cover 40 is configured such that when the limiting nut 30 is screwed to the end of the first thread 11, the wire cover 40 is pushed above the mounting hole 12, and one side of the wire cover 40 abuts against the limiting protrusion 13, and the other side abuts against the limiting nut 30.

[0033] The lamp tail cover device disclosed in this embodiment can connect the limiting nut 30 to the lamp tail cylinder 10 through the engagement of the first thread 11 and the second thread 31, and the limiting nut 30 can be screwed in or out along the axial direction of the lamp tail cylinder 10. Both the wire cover 40 and the limiting nut 30 are annular and are fitted onto the lamp tail cylinder 10. The wire cover 40 is located between the limiting nut 30 and the limiting protrusion 13. When the limiting nut 30 is screwed in to the end of the first thread 11, the wire cover 40 is pushed above the mounting hole 12, covering the plugged-in accessories, such as the remote switch device 100, thereby preventing the remote switch device 100 from loosening and reducing the occurrence of poor contact.

[0034] Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, the lamp tail cylinder 10 is cylindrical, and the mounting hole 12 penetrates the lamp tail cylinder 10 along its diameter. Therefore, during installation, the accessories are inserted along the diameter of the lamp tail cylinder 10. The wire cover 40 and the limiting nut 30 are both annular and fit over the outer wall of the lamp tail cylinder 10. When the wire cover 40 is pushed above the mounting hole 12 by the limiting nut 30, it covers the accessories, preventing them from retracting along the diameter of the lamp tail cylinder 10, thus maintaining connection and usability.

[0035] Moreover, during use, the wire cover 40 is constrained on both sides by the limiting nut 30 and the limiting protrusion 13, making the wire cover 40 immovable and further improving the stability of the structure.

[0036] When the remote switch device 100 is removed, the wire cover 40 can be loosened by simply unscrewing the limit nut 30, allowing the wire cover 40 to move towards the front end of the lamp tail cylinder 10, exposing the mounting hole 12 and releasing the restriction on the accessory. At this time, the accessory can be easily removed by applying a pulling force in a direction away from the center of the lamp tail cylinder 10.

[0037] In summary, by setting a limiting nut 30 and a wire cover 40 on the lamp tail cylinder 10 in this embodiment, it is possible to quickly disassemble and assemble the accessories, while also ensuring the reliability of the equipment in use and making it easy to use.

[0038] Specifically, the lamp tail cylinder 10 disclosed in this embodiment can be made of plastic or alloy material. The first thread 11 and the limiting protrusion 13 on the lamp tail cylinder 10 can be directly processed by integral molding to simplify the processing flow and save costs; the mounting hole 12 on the lamp tail cylinder 10 can be integrally molded during manufacturing or can be drilled later.

[0039] It should be noted that this embodiment is only an example of the material type of the lamp tail cylinder 10, but the protection scope of the present invention is not limited to this. Other types of lamp tail cylinder 10, as long as they can achieve the technical effect disclosed in this application, can be used as equivalent replacements for the concept of the present invention and should also be within the protection scope of this application.

[0040] like Figure 2 As shown, in this embodiment, a first thread 11 and a limiting protrusion 13 protrude from the outer surface of the lamp tail cylinder 10, while support surfaces 14 protrude from both sides of the mounting hole 12; wherein, the protrusion height of the first thread 11 and the support surface 14 are equal, or the protrusion height of the support surface 14 is slightly higher than the protrusion height of the first thread 11; the protrusion height of the limiting protrusion 13 is higher than that of the first thread 11 and the support surface 14. The inner wall of the wire cover 40 is in close contact with the support surface 14, and the inner wall of the limiting nut 30 is in close contact with the first thread 11.

[0041] The wire cover 40 disclosed in this embodiment can move axially along the lamp tail cylinder 10 without being blocked by the first thread 11 and the support platform 14, but it will be blocked by the limiting protrusion 13. After the accessory is inserted into the mounting hole 12, the limiting nut 30 is continuously screwed in, pushing the wire cover 40 to move on the support platform 14 and gradually covering the mounting hole 12; until the rear side of the wire cover 40 abuts against the limiting protrusion 13, at which point the limiting nut 30 can no longer be screwed in on the front side of the wire cover 40, and remains in abutting against the wire cover 40.

[0042] In this state, the inner wall of the wire cover 40 is supported by the support platform 14, thus maintaining a coaxial position with the lamp tail cylinder 10; at the same time, the wire cover 40 is constrained by the limiting nut 30 and the limiting protrusion 13, maintaining its fixation along the axial direction of the lamp tail cylinder 10. It can be seen that the stability of the wire cover 40 is further improved through the combined axial and radial constraints.

[0043] Specifically, the accessory disclosed in this embodiment can be a remote switch device 100. The connector 101 of the remote switch device 100 is inserted into the mounting hole 12 and connected to the accessory slot 21 on the motherboard 20. Simultaneously, the connector 101 of the remote switch device 100 may protrude beyond the mounting hole 12. For example... Figure 2 and Figure 3 As shown, the wire cover 40 disclosed in this embodiment can be provided with an outwardly protruding relief opening 41. The shape of the relief opening 41 matches the shape of the connector 101 to achieve a perfect fit between the wire cover 40 and the remote switch device 100.

[0044] In addition, the clearance opening 41 also serves as a further constraint. By engaging and aligning the clearance opening 41 with the connector 101, the side of the connector 101 is constrained when the cable cover 40 is in the covered state, thereby reducing the lateral sway of the remote switching device 100 and further improving the structural stability in use.

[0045] like Figure 2 , Figure 3 and Figure 4 As shown, in another embodiment of this application, the lamp tail cylinder 10 is further provided with an annular groove 15, the annular groove 15 extends circumferentially along the lamp tail cylinder 10 and is located between the first thread 11 and the assembly hole 12; the lamp tail cover device is also covered with a first rubber ring 50, the first rubber ring 50 is sleeved in the annular groove 15 and is used to abut against the limiting nut 30.

[0046] The first rubber ring 50 disclosed in this embodiment includes, but is not limited to, rubber rings, latex rings, silicone rings, etc. The first rubber ring 50 has a certain degree of toughness and elasticity, and its diameter is greater than the depth of the annular groove 15. Therefore, the lower half of the first rubber ring 50 is constrained by the annular groove 15 and can remain stable along the axial direction of the lamp tail cylinder 10. Simultaneously, the upper half of the first rubber ring 50 protrudes outside the annular groove 15 and can abut against the limiting nut 30.

[0047] The first rubber ring 50 is located on the rear side of the first thread 11 and the front side of the mounting hole 12. Therefore, when the limiting nut 30 is continuously screwed in until it abuts the wire cover 40, the inner wall of the limiting nut 30 abuts against the first rubber ring 50, which increases the resistance to the rotation of the limiting nut 30. This helps to maintain the stability of the limiting nut 30 and avoid accidental retraction. Furthermore, it helps to prevent the wire cover 40 from accidentally loosening, avoid affecting the limiting effect of the wire cover 40, and maintain the stability of the overall structure.

[0048] In addition, when it is necessary to remove the accessories, the limit nut 30 can be turned back a certain distance to disengage from the first rubber ring 50, reducing the rotational resistance and allowing for rapid movement, thereby increasing the speed of removing the wire cover 40 and achieving the effect of rapid disassembly and assembly.

[0049] For example Figure 2 and Figure 6 As shown, in another embodiment of this application, a wire-avoiding groove 131 is formed on the limiting protrusion 13, and the wire-avoiding groove 131 and the mounting hole 12 are arranged sequentially along the axial direction of the lamp tail cylinder 10. In this embodiment, the wire-avoiding groove 131 is disposed on the limiting protrusion 13, located behind the mounting hole 12; the depth of the wire-avoiding groove 131 can be flush with the outer surface of the lamp tail cylinder 10, or slightly lower than the outer surface of the lamp tail cylinder 10, to form a groove for wiring. The wire-avoiding groove 131 can accommodate the wire of the accessory, further improving the stability during accessory assembly. The wire-avoiding groove and the mounting hole 12 are arranged in a straight line and extend along the axial direction of the lamp tail cylinder 10, so the accessory is placed along the axial direction of the lamp tail cylinder 10 during assembly. That is, the accessory and the lamp tail cap device are arranged in a straight line, which helps to save space.

[0050] In addition, the accessories are arranged along the axial direction of the lamp tail cylinder 10, and the wire cover 40 is wrapped around the lamp tail cylinder 10 and extends circumferentially. The two are perpendicular to each other in the disassembly and assembly direction and do not interfere with each other. Therefore, the convenience of operation can be increased, and the assembly and disassembly of the accessories can be more orderly and easy to operate. like Figure 2 and Figure 3 As shown, in another embodiment of this application, the lamp tail cylinder 10 is disclosed to include a lamp tail connector 16 and a tail cover 17. The tail cover 17 is rotatably sleeved on the lamp tail connector 16. The main board 20 is disposed inside the tail cover 17. The limiting nut 30 and the wire cover 40 are both assembled on the tail cover 17.

[0051] The lamp tail cylinder 10 disclosed in this embodiment adopts a split structure. A lamp tail connector 16 is provided to fix and connect the main body 90 of the lamp. A tail cover 17 is provided that can rotate relative to the lamp tail connector 16, so as to drive the main board 20, the limit nut 30 and the wire cover 40 to rotate together. Therefore, the angle of the mounting hole 12 can be adjusted. By adjusting the direction of the mounting hole 12, the direction of the accessory insertion can be adjusted, thereby achieving the purpose of adjusting the placement direction of the accessories, improving the flexibility of the lamp tail cover device.

[0052] For example, when assembling the remote switch device 100, since there is a wire 102 on the remote switch device 100, a twisting problem may occur during use. By rotating the tail cover 17, the direction of the mounting hole 12 can be adjusted, which will drive the wire 102 of the remote switch device 100 to rotate, thereby solving the twisting problem and preventing the wire 102 from becoming taut or being torn off.

[0053] In some applications, lighting fixtures are only convenient to operate from one side, such as wall-mounted fixtures. When assembling components, the mounting hole 12 is moved away from the wall by rotating the tail cap 17 to facilitate operation. Another example is a tactical light on a firearm. To facilitate quick operation of the remote switch 100 while holding the weapon, the user can rotate the tail cap 17 to face the side, allowing them to assemble and use the remote switch 100 from their preferred side.

[0054] In summary, the lamp tail cylinder 10 disclosed in this embodiment adopts a split structure, which allows the accessories to be flexibly adjusted in position while maintaining connection after being assembled onto the main body 90 of the lamp, making it more convenient to use.

[0055] like Figure 5 As shown, the lamp tail connector 16 disclosed in this embodiment is cylindrical with an internal thread 161 at the front end for screwing onto the main body 90 of the lamp fixture. Preferably, the lamp tail connector 16 can serve as a rear cover for the battery compartment, covering it. This screw-on, detachable connection allows for the removable assembly and disassembly of the main body 90 of the lamp fixture, facilitating battery replacement. Furthermore, the screw-on assembly method is simple and easy to operate, and offers good stability, preventing loosening. For example... Figure 2 and Figure 5 As shown, in order to further improve the stability of the assembly and increase the waterproof and dustproof effect, a sealing ring 162, such as a rubber sealing ring or a silicone sealing ring, can be provided on the inner wall of the lamp tail connector 16. In the screwed state, the sealing ring 162 can fill the assembly gap, improve the stability of the connection between the lamp tail connector 16 and the lamp body 90, and increase the waterproof and dustproof performance inside the battery compartment.

[0056] like Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, in another embodiment of this application, the rear end of the lamp tail connector 16 is provided with a connecting portion 163, and the connecting portion 163 is provided with an annular first mounting groove 164; the front end of the tail cover 17 is provided with a docking portion 171, and the docking portion 171 is inserted into the connecting portion 163; and the docking portion 171 is provided with an annular second mounting groove 172; the second mounting groove 172 and the first mounting groove 164 are arranged opposite to each other to form a limiting channel; the lamp tail cover device also includes a limiting member 60, which is inserted into the limiting channel and simultaneously abuts against the first mounting groove 164 and the second mounting groove 172 to lock the docking portion 171, so as to connect the lamp tail connector 16 and the tail cover 17 into one piece.

[0057] In this embodiment, the lamp tail connector 16 is connected to the front end of the lamp body 90, and a connecting part 163 is provided at the rear end. The diameter of the connecting part 163 is smaller than the diameter of the lamp tail connector 16, and an assembly surface is formed on the outer surface of the connecting part 163. A mating part 171 is provided on the tail cap 17 and fits onto the assembly surface to form a plug-in assembly.

[0058] However, simply forming a plug-in assembly is prone to loosening. In this embodiment, the first assembly groove 164 and the second assembly groove 172 are combined to form a limiting channel. By inserting a limiting member 60 into the limiting channel, which simultaneously abuts against the first assembly groove 164 and the second assembly groove 172, a structure similar to a "mortise and tenon" is formed. The connection part 163 and the mating part 171 are locked through precise geometric interlocking.

[0059] Meanwhile, since the limiting channel disclosed in this embodiment extends circumferentially along the tailpiece cylinder 10, the limiting member 60 is also arranged in a ring or arc shape within the limiting channel, forming a lock in the axial and radial directions of the tailpiece cylinder 10, but without affecting the circumferential flexibility. Regardless of circumferential rotation, the limiting member 60 always ensures that the tail cap 17 and the tailpiece connector 16 will not separate, and the center will not shift. This ensures that the alignment accuracy and vertical stability of the structure are not affected during rotation. Therefore, the connection method between the tailpiece connector 16 and the tail cap 17 in this application is simple and robust, while also taking into account the rotational flexibility of the tail cap 17.

[0060] like Figure 6 As shown, in another embodiment of this application, a through hole 173 is provided on the tail cap 17. One end of the through hole 173 extends to the outer surface of the tail cap 17, and the other end extends to the inner wall of the tail cap 17 to connect with the limiting channel. The extending direction of the through hole 173 is tangent to the limiting channel. The through hole 173 is used to insert and guide the limiting member 60 to the limiting channel.

[0061] The perforation 173 disclosed in this embodiment is used to install the limiting member 60. After the tail cap 17 and the lamp tail connector 16 are mated, the connecting part 163 and the mating part 171 are fully engaged. At this time, the limiting member 60 is inserted into the perforation 173. Since the extension direction of the perforation 173 is tangent to the limiting channel, the limiting member 60 can smoothly enter the limiting channel, reducing the problem of obstruction. The limiting member 60 is continuously inserted along the limiting channel until the end is completely inserted into the limiting channel, completing the assembly. In actual operation, the end of the limiting member 60 can be pushed with a tool (such as a pin, bent needle, etc.) to make the limiting member 60 completely enter the limiting channel, avoiding the problem of getting stuck in the perforation 173 and affecting the rotation of the tail cap 17.

[0062] For example Figure 2 and Figure 5 As shown, in another embodiment of this application, an annular limiting groove 1631 is provided on the connecting part 163, and the limiting groove 1631 is located at the front end of the first assembly groove 164; the lamp tail cover device also includes a second rubber ring 70, which is sleeved in the limiting groove 1631 and used to abut against the docking part 171.

[0063] The second rubber ring 70 disclosed in this embodiment includes, but is not limited to, rubber rings, silicone rings, latex rings, etc. The second rubber ring 70 is fitted within the limiting groove 1631 to prevent displacement. The second rubber ring 70 is used to abut against the mating part 171 to fill the assembly gap between the mating part 171 and the connecting part 163, thereby improving the airtightness of the assembly between the lamp tail connector 16 and the tail cap 17 and making the assembly more stable.

[0064] For example Figure 2 As shown in another embodiment of this application, the lamp tail cover device further includes a corrugated gasket 80, which is embedded in the front end of the tail cover 17 and abuts against the connecting part 163. In this embodiment, the corrugated gasket 80 has a certain degree of resilience. The corrugated gasket 80 is placed on the tail cover 17 and abuts against the connecting part 163 to generate a certain constraint force, so that the connecting part 163 and the mating part 171 maintain a certain tendency to separate from each other; at the same time, the limiting member 60 will resist this separation tendency, thereby achieving a mechanical balance state. Along the axial direction of the lamp tail cylinder 10, the connecting part and the mating part are kept in a tight state, which further improves the structural stability of the entire lamp tail cover device.

[0065] Specifically, as another embodiment of this application, the limiting member 60 is disclosed as a shape memory wire. Shape memory wire typically refers to a smart material made of nickel-titanium (NiTi) or iron-based shape memory alloy (Fe-SMA). It has high damping and seismic performance, excellent fatigue resistance, and low density, offering the advantage of lightweight design. Therefore, when placed in the limiting channel, it can provide a long-term restraining effect, keeping the connecting part 163 and the mating part 171 connected.

[0066] like Figure 7 and Figure 8 As shown, as another embodiment of this application, a lamp is also disclosed, which includes a main body 90, a remote switch device 100, and a lamp tail cover device as described above. The lamp tail cover device is connected to the main body 90 and is disposed at the rear end of the main body 90. The remote switch device 100 is detachably inserted into the mounting hole 12 of the lamp tail cover device.

[0067] The lamp disclosed in this embodiment integrates the main body 90 and the remote switch device 100 into one unit by setting a lamp tail cover device, which facilitates increased flexibility of use.

[0068] In summary, this application discloses a lamp tail cover device, comprising a lamp tail cylinder 10, a main board 20, a limiting nut 30, and a wire cover 40. The lamp tail cylinder 10 is provided with a first thread 11, an assembly hole 12, and a limiting protrusion 13 sequentially along the axial direction. The main board 20 is disposed inside the lamp tail cylinder 10. The main board 20 is provided with a fitting insertion port 21 facing the assembly hole 12. The limiting nut 30 and the wire cover 40 are slidably fitted onto the lamp tail cylinder 10. The inner wall of the limiting nut 30 is provided with a second thread 31, which engages with the first thread 11. The wire cover 40 is configured such that when the limiting nut 30 is screwed to the end of the first thread 11, the wire cover 40 is pushed above the assembly hole 12, and one side of the wire cover 40 abuts against the limiting protrusion 13, and the other side abuts against the limiting nut 30. The connection between the limiting nut 30 and the lamp tail cylinder 10 can be achieved through the meshing of the first thread 11 and the second thread 31. The limiting nut 30 can be screwed in or out along the axial direction of the lamp tail cylinder 10. The cooperation between the limiting nut 30 and the wire cover 40 can realize the quick disassembly and assembly of accessories, while also ensuring the reliability of the equipment in use and making it easy to use.

[0069] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0070] It should be noted that this invention uses the lamp tail cover device and lamp as examples to introduce the specific structure and working principle of the invention, but the application of the invention is not limited to the lamp tail cover device and lamp, and can also be applied to the production and use of other similar workpieces.

[0071] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lamp tail cap device, characterized in that, include: The lamp tail cylinder has a first thread, an assembly hole and a limiting protrusion arranged sequentially along the axial direction. The main board is located inside the lamp tail cylinder; the main board is provided with a component connector facing the mounting hole; Both the limiting nut and the wire cover are slidably fitted onto the lamp tail cylinder; the inner wall of the limiting nut is provided with a second thread, which engages with the first thread; the wire cover is configured such that when the limiting nut is screwed to the end of the first thread, the wire cover is pushed above the mounting hole, and one side of the wire cover abuts against the limiting protrusion, and the other side abuts against the limiting nut.

2. The lamp tail cover device according to claim 1, characterized in that, The lamp tail cylinder is also provided with an annular groove, which extends circumferentially along the lamp tail cylinder and is located between the first thread and the assembly hole. The lamp tail cover device also includes a first rubber ring, which is fitted inside the annular groove and used to abut against the limiting nut.

3. The lamp tail cover device according to claim 1, characterized in that, The limiting protrusion has a wire avoidance groove, and the wire avoidance groove and the assembly hole are arranged sequentially along the axial direction of the lamp tail cylinder.

4. The lamp tail cover device according to claim 1, characterized in that, The lamp tail cylinder includes: Taillight connector; The tail cap is rotatably fitted onto the lamp tail connector; the main board is located inside the tail cap; the limiting nut and the wire cover are both assembled on the tail cap.

5. The lamp tail cover device according to claim 4, characterized in that, The rear end of the lamp tail connector is provided with a connecting part, and the connecting part is provided with an annular first assembly groove. The front end of the tail cap is provided with a docking part, which is inserted into the connecting part; and the docking part is provided with an annular second assembly groove; the second assembly groove and the first assembly groove are arranged opposite to each other to form a limiting channel. The lamp tail cover device further includes a limiting member, which is inserted into the limiting hole and simultaneously abuts against the first assembly groove and the second assembly groove to lock the docking part, so as to connect the lamp tail connector and the tail cover into one piece.

6. The lamp tail cover device according to claim 5, characterized in that, The tail cap is provided with a perforation, one end of which extends to the outer surface of the tail cap and the other end extends to the inner wall of the tail cap to connect with the limiting channel. The perforation extends in a direction tangent to the limiting channel; the perforation is used to insert and guide the limiting member into the limiting channel.

7. The lamp tail cover device according to claim 5, characterized in that, The connecting part is provided with an annular limiting groove, which is located at the front end of the first assembly groove; The lamp tail cover device also includes a second rubber ring, which is fitted inside the limiting groove and used to abut against the mating part.

8. The lamp tail cover device according to claim 5, characterized in that, The lamp tail cover device also includes a corrugated gasket, which is embedded in the front end of the tail cover and is used to abut against the connecting part.

9. The lamp tail cover device according to any one of claims 5 to 8, characterized in that, The limiting component is a memory steel wire.

10. A lamp, characterized in that, The device includes a main body, a remote switch device, and a lamp tail cover device as described in any one of claims 1 to 9, wherein the lamp tail cover device is connected to the main body and is disposed at the rear end of the main body; the remote switch device is detachably inserted into the mounting hole of the lamp tail cover device.

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