Splicing piece with lock and lighting equipment thereof

Abstract

The utility model discloses a splice piece with a lock and a lighting device thereof, the splice piece with the lock comprises a splice seat, the splice seat is provided with a plurality of connecting units, a locking position and a connecting position used for being connected with an external connecting piece, each connecting unit comprises a limiting assembly and a locking assembly, the limiting assembly is used for being close to or away from the connecting position, and the locking assembly is used for being close to or away from the connecting position. The limiting assembly is used for being in a locking state of locking the connecting position after being close to the connecting position, and is used for being in an unlocking state of unlocking the connecting position after being far away from the connecting position; the locking assembly is connected to the limiting assembly, and the locking assembly is used for keeping the locking state of the limiting assembly after entering the locking position. According to the splicing piece with the lock, a plurality of panel lamps can be connected, and large-area lighting is achieved; and in addition, disassembly and assembly are fast, automatic locking can be achieved, loosening is prevented, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a locking splicing piece and lighting equipment thereof. Background Art

[0002] At present, in the process of film and television shooting, short video creation or photography, lighting equipment is often needed to assist in lighting and provide a large area of ​​light source to present a better photographic effect. In the use scenarios of video, film and television drama, photography, etc., a single panel light will encounter the problem of insufficient luminous area, which affects the lighting effect.

[0003] In order to achieve different lighting effects, multiple panel lights are usually spliced ​​together to obtain a larger surface light source and improve the lighting effect. However, the existing panel light splicing parts are cumbersome to use and affect the shooting efficiency; in addition, when multiple panel lights are connected through a splicing part, the splicing part may loosen due to excessive force, posing a safety risk.

[0004] Therefore, there is an urgent need for a locking splicing piece and a lighting device thereof to overcome the above-mentioned defects. Utility Model Content

[0005] In order to overcome at least one of the defects of the prior art described above, one of the purposes of the utility model is to provide a locking splicing piece, which can connect multiple panel lights to achieve large-area lighting; and it is quick to disassemble and assemble, can be automatically locked to prevent loosening, and is safe and reliable.

[0006] The second purpose of the utility model is to provide a lighting device, which can connect multiple panel lights through splicing parts to achieve large-area lighting; and the device is safe and reliable during use.

[0007] One of the technical solutions adopted by the utility model to solve the problem is:

[0008] A locking splicing piece includes a splicing seat, on which are provided a plurality of connection units, a locking position and a connection position for connecting an external connection piece, the connection unit includes a limit assembly and a locking assembly, the limit assembly is used to approach or move away from the connection position, the limit assembly is used to be in a locked state of locking the connection position after approaching the connection position, and the limit assembly is used to be in an unlocked state of unlocking the connection position after moving away from the connection position; the locking assembly is connected to the limit assembly, and the locking assembly is used to maintain the locked state of the limit assembly after entering the locking position.

[0009] Furthermore, a first rotating shaft is provided on the splicing seat, and the limiting assembly includes a limiting rod, which is rotatably connected to the first rotating shaft; the limiting rod is used to approach or move away from the connection position during rotation.

[0010] Furthermore, the limiting rod is provided with a clamping groove, and the clamping groove is used to be clamped and matched with the external connecting member to limit the axial movement of the external connecting member.

[0011] Furthermore, the locking assembly includes a locking column, which is arranged on the side of the limiting rod facing away from the connecting position; a sliding guide section is provided on the splicing seat, and the locking column is slidably connected to the sliding guide section; the sliding guide section includes a guide section and the locking position.

[0012] Furthermore, a connecting groove is provided on the splicing seat, and the connecting groove is formed as the sliding guide section; the guide section is arranged at an angle to the locking position.

[0013] Furthermore, an undercut structure is provided at the connection between the guide section and the locking position.

[0014] Furthermore, a limiting portion is provided at the end of the sliding guide section away from the locking position.

[0015] Furthermore, the locking assembly includes a pressure plate, which has a locking end and a rotating end, and the locking column is arranged on the locking end; an installation groove is provided in the limiting rod, and the pressure plate is rotatably arranged in the installation groove; the rotating end is used to rotate into or out of the installation groove, and drive the locking end to rotate out of or into the locking position.

[0016] Furthermore, an elastic member is provided in the mounting groove, and the elastic member is a torsion spring. The pressure plate is rotatably connected to the mounting groove through a second rotating shaft, and the torsion spring is sleeved on the second rotating shaft; one end of the torsion spring abuts against the inner wall of the mounting groove, and the other end of the torsion spring abuts against the pressure plate.

[0017] The second technical solution adopted by the utility model to solve the problem is:

[0018] A lighting device includes a lamp and a locking splicing piece as described above, wherein the lamp is provided with a connecting piece, the connecting piece is provided with a snap-fitting portion, the connecting piece is plug-fitted with the connecting position, and the snap-fitting portion is used to snap-fit ​​with the limiting component after the limiting component approaches the connecting position, so that the connecting piece is locked and connected with the connecting position.

[0019] In summary, the locking splicing piece and lighting device provided by the utility model have the following technical effects:

[0020] 1) According to the usage scenario and fill light requirements, the splicing piece can connect multiple panel lights to achieve large-area lighting;

[0021] 2) After the splicing parts and panel lights are installed, they can be automatically locked to prevent the panel lights from loosening and ensure safe use;

[0022] 3) The joint parts and panel lights are easy to unlock, allowing for quick disassembly and assembly, improving shooting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the lighting device in the second embodiment of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of a locking splicing piece in Embodiment 1 of the present utility model;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0026] Figure 4 This is a schematic diagram of the exploded structure of the locking splicing piece in the first embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the splicing seat in the first embodiment of the utility model;

[0028] Figure 6 It is a partial cross-sectional schematic diagram of the assembly of the locking splicing piece and the lamp in the second embodiment of the utility model;

[0029] Figure 7 It is a structural schematic diagram and a cross-sectional diagram of the limiting component in the second embodiment of the utility model.

[0030] The meanings of the reference numerals are as follows:

[0031] 1. Lockable splicing piece; 10. Connecting position; 11. Splicing seat; 111. First rotating shaft; 12. Pressure cover; 121. Connecting hole; 13. Clamping seat; 14. Limiting assembly; 141. Limiting rod; 142. Snap-fitting groove; 143. Locking column; 144. Pressing plate; 145. Mounting groove; 146. Elastic member; 147. Second rotating shaft; 15. Connecting groove; 151. Locking position; 152. Limiting part; 153. Inverted structure; 2. Lamp; 21. Connecting piece; 22. Snap-fitting part. DETAILED DESCRIPTION

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] Embodiment 1

[0036] See also Figure 2 The utility model discloses a locking splicing piece 1, which can be used to splice multiple panel lights, and the lighting area can be flexibly set during the shooting process. Figure 4 The splicing piece includes a splicing seat 11, on which are disposed a plurality of connection units, a locking position 151, and a connection position 10 for connecting an external connection member 21. The connection unit includes a limit assembly 14 and a locking assembly, and the limit assembly 14 is used to approach or move away from the connection position 10; specifically, see Figure 5 The limit assembly 14 is used to be in a locked state of locking the connection position 10 after approaching the connection position 10, and is used to be in an unlocked state of unlocking the connection position 10 after moving away from the connection position 10. The locking assembly is connected to the limit assembly 14, and the locking assembly is used to approach or move away from the locking position 151, and the locking assembly is used to maintain the locking state of the limit assembly 14 after entering the locking position 151.

[0037] It should be noted that the external connecting member 21 may be a connecting member 21 on the lamp 2 to be connected, or may be a connecting transfer member.

[0038] On the basis of this structure, when using the locking splicing piece of the utility model, the limiting component 14 can be first moved away from the connecting position 10 to put the connecting position 10 in an unlocked state; then the external connecting piece 21 is connected to the connecting position 10 on the splicing seat 11, and then the limiting component 14 is moved to approach and lock the connecting position 10, and at the same time, the locking component automatically enters the locking position 151 to achieve locking when the limiting component 14 approaches the connecting position 10.

[0039] The locking effect of the limiting component 14 on the connection position 10 specifically refers to: when the limiting component 14 is close to the connection position 10, it can squeeze the connection member 21 in the connection position 10 or engage with the connection member 21, thereby limiting the connection member 21; and when the limiting component 14 is away from the connection position 10, the engaging or squeezing effect with the connection member 21 is released. In addition, the locking effect of the locking component on the limiting component 14 specifically refers to: after the locking component enters the locking position 151, it can limit the movement of the limiting component 14, thereby preventing the limiting component 14 from being separated from the connection member 21; after the locking component exits the locking position 151, the movement restriction of the limiting component 14 is cancelled, and the limiting component can move away from the connection position 10.

[0040] In this way, the connector 21 is first limited by the limit assembly 14 so that the connector 21 is installed in the connection position 10; and then the limit assembly 14 is limited by the locking assembly to prevent the limit assembly 14 from being separated from the connector 21, thereby ensuring the reliability of the connection. It should be noted that when the limit assembly 14 moves to the limit connector 21, the locking assembly automatically slides into the locking position 151 to achieve locking, that is, the connection and locking of the connector 21 and the splicing seat 11 are achieved simultaneously, which is simple to operate and easy to disassemble and assemble. The automatic locking can prevent the user from forgetting to lock and ensure a reliable connection.

[0041] Furthermore, a first rotating shaft 111 is provided on the splicing seat 11, and the limiting assembly 14 includes a limiting rod 141, and the limiting rod 141 is rotatably connected to the first rotating shaft 111; wherein the limiting rod 141 is used to approach or move away from the connecting position 10 during rotation to lock or unlock the connecting position 10.

[0042] On the basis of this structure, during assembly, a rotation hole can be provided at one end of the limit rod 141, and the limit rod 141 can be rotatably connected to the first rotating shaft 111 through the rotation hole, and the other end of the limit rod 141 away from the rotation hole can be extended to the outside of the splicing seat 11, so that the user can hold the limit rod 141 for operation. When splicing panel lights, the limit rod 141 can be rotated to move away from the connection position 10, and then the connector 21 on the spliced ​​panel light can be connected to the splicing seat 11, and then the limit rod 141 can be rotated to approach and lock the connector 21 to complete the splicing.

[0043] Among them, the locking assembly is connected to the limit rod 141, and the limit rod 141 can drive the locking assembly to automatically enter or exit the locking position 151 when rotating. In this way, the user can directly realize the locking state of the splicing seat 11 by rotating the limit rod 141, which is simple to operate and can improve the splicing efficiency.

[0044] Furthermore, a clamping groove 142 is provided on the limiting rod 141 , and the clamping groove 142 is used to be clamped and matched with the external connecting member 21 to limit the axial movement of the external connecting member 21 .

[0045] Based on this structure, see Figure 3 The connection position 10 can be a through hole, and correspondingly, the connection piece 21 on the panel light is a connection column, and a groove is provided on the outer periphery of the connection column. During assembly, the connection column can be inserted into the through hole from the bottom of the splicing seat 11 along the axial direction, and then the limiting rod 141 is moved close to the through hole, and the clamping groove 142 on the limiting rod 141 can be clamped with the groove on the connection column, so as to realize the connection between the connection column and the splicing seat 11.

[0046] Among them, see Figure 6 After the connecting column is connected to the limiting rod 141, the axial movement of the connecting column is restricted, so the connecting column cannot be separated from the splicing seat 11. In this way, by providing a clamping groove 142 on the limiting rod 141, and the limiting rod 141 approaches the connecting column along the radial direction of the connecting column and clamps with the connecting column, the connecting column can be axially limited.

[0047] Further, the locking assembly includes a locking column 143, and the locking column 143 is arranged on the side of the limiting rod 141 facing away from the connecting position 10. In addition, a sliding guide section is provided on the splicing seat 11, and the locking column 143 is slidably connected to the sliding guide section; specifically, the sliding guide section includes a guide section and the locking position 151, wherein the guide section is used to guide the locking column 143 to slide into the locking position 151 when the limiting rod 141 moves close to the connecting position 10, and the locking position 151 is used to lock the locking column 143.

[0048] Based on this structure, when splicing the lamp 2, after the external connecting part 21 is inserted into the connecting position 10, while the limiting rod 141 is moved close to the connecting position 10, the limiting rod 141 drives the locking column 143 to slide in the sliding guide section, and the locking column 143 is guided into the locking position 151 through the guide section.

[0049] The guide section may be a slope section, and a recessed section is provided at the bottom of the slope section, which forms a locking position 151; the locking column 143 slides down to the recessed section under the guidance of the slope section and is locked in the recessed section, so that the limiting rod 141 cannot rotate. When unlocking is required, the locking column 143 is lifted up by the limiting rod 141, so that the locking column 143 leaves the recessed section, and the limiting rod 141 can rotate.

[0050] Thus, by setting the sliding guide section, the locking column 143 can be guided to enter or exit the locking position 151 along a specific path to lock the limiting rod 141. The limiting rod 141 slides against the splicing seat 11 through the locking column 143, which can ensure the stable rotation of the limiting rod 141.

[0051] Furthermore, the splicing seat 11 is provided with a connecting groove 15, and the connecting groove 15 is formed as a sliding guide section. Specifically, the guide section is a guide groove, the locking position 151 is a locking groove, and the guide section and the locking position 151 are arranged at an angle, which is a right angle or an acute angle.

[0052] The guide groove extends along the circumferential direction of the splicing seat 11 , so when the limiting rod 141 rotates toward or away from the connecting position 10 , the locking column 143 slides in the guide groove, and its motion trajectory is the same as that of the limiting rod 141 .

[0053] Based on this structure, during the rotation of the limit rod 141, the locking column 143 can drive the locking column 143 to slide in the connecting groove 15, and when the locking column 143 is guided by the guide groove into the locking position 151, the locking column 143 is restricted by the groove wall of the locking position 151 on one side along the unlocking direction of the limit rod 141, so the unlocking rotation of the limit rod 141 is restricted.

[0054] When the locking position 151 is arranged at a right angle or an acute angle to the guide section, the locking column 143 will change direction when it is guided by the guide groove into the locking groove. When unlocking, the locking column 143 needs to be reversed out of the locking groove before the limit rod 141 can be moved. This can prevent the locking column 143 from sliding and causing unlocking when the limit rod 141 is accidentally touched in the locked state, thereby preventing the locking effect from being released.

[0055] Furthermore, an undercut structure 153 is provided at the connection between the guide section and the locking position 151 .

[0056] It should be noted that when the locking position 151 is set at an acute angle to the extension direction of the guide section, the connection between the guide section and the locking position 151 presents an undercut structure 153; when the locking position 151 is set at a right angle to the extension direction of the guide section, a protruding block can be provided inwardly at the connection between the guide section and the locking position 151 to form an undercut structure 153. The undercut structure 153 can reduce the channel size at the connection between the guide section and the locking position 151. When the locking column 143 wants to exit the locking position 151, it needs to bypass the undercut structure 153, thereby preventing the locking column 143 from leaving the locking position 151 when the limiting rod 141 is accidentally touched.

[0057] Furthermore, a limiting portion 152 is provided at the end of the sliding guide section away from the locking position 151 , and the limiting portion 152 is used to limit the locking column 143 when the limiting assembly 14 is in the unlocked state.

[0058] In this embodiment, the limiting portion 152 is a limiting groove section. When unlocking, the locking column 143 is first withdrawn from the locking position 151 and enters the guiding section, and then the limiting rod 141 is rotated along the unlocking direction away from the connecting position 10. At the same time, the locking column 143 is guided by the guiding section into the limiting portion 152 under the drive of the limiting rod 141, and the locking column 143 and the limiting groove section are engaged in a limiting manner.

[0059] In addition, the limiting portion 152 can also be a limiting block or a limiting hole, and a corresponding limiting groove or limiting protrusion is provided on the locking column 143. In this way, when the locking column 143 is limited in the limiting portion 152, the unlocked state of the splicing seat 11 can be maintained, and the locking column 143 can be prevented from sliding into the locking position 151 when the limiting rod 141 is in the unlocked state without being limited in the guide section, so that the connection position 10 needs to be unlocked again for connection when the panel light is spliced ​​next time.

[0060] Further, the locking assembly includes a pressing plate 144. Specifically, the pressing plate 144 has a locking end and a rotating end, and the locking column 143 is disposed on the locking end. Figure 7 A mounting groove 145 is provided in the limiting rod 141 , and the pressing plate 144 is rotatably disposed in the mounting groove 145 .

[0061] Based on this structure, in the initial state, the locking column 143 is located in the limiting portion 152 , the splicing seat 11 is in an unlocked state, and the rotating end of the pressing plate 144 is located outside the installation groove 145 .

[0062] When locking, the limiting rod 141 rotates close to the connecting position 10 and drives the locking column 143 to move in the connecting groove 15, wherein when the locking column 143 slides from the limiting portion 152 into the guiding section, the rotating end of the pressure plate 144 rotates from the outside of the mounting groove 145 into the mounting groove 145, and when the locking column 143 slides into the locking position 151, the rotating end of the pressure plate 144 rotates from the inside of the mounting groove 145 to exit the mounting groove 145 and drives the rotating end to enter the locking position 151.

[0063] When unlocking, you need to first press the rotating end of the pressure plate 144, the rotating end rotates into the installation groove 145, and drives the locking end of the pressure plate 144 to rotate in the opposite direction, so that the locking end rotates out of the locking position 151, and then rotate the limit rod 141 away from the connecting position 10 to achieve unlocking.

[0064] In this way, by rotatably arranging the pressing plate 144 in the mounting groove 145, the movement track of the locking end of the pressing plate 144 changes direction during the rotation process and enters the locking position 151, ensuring that the locking column 143 cannot directly move back out of the locking position 151 in the locked state. In addition, the elastic member 146 is used to drive the pressing plate 144 to reset, and can automatically press the locking end of the pressing plate 144 into the locking position 151 to achieve automatic locking.

[0065] Furthermore, an elastic member 146 is provided in the installation slot 145, and the elastic member 146 is a torsion spring. The limiting assembly 14 also includes a second rotating shaft 147. The pressing plate 144 is rotatably connected to the installation slot 145 through the second rotating shaft 147, and the torsion spring is sleeved on the second rotating shaft 147. Specifically, one end of the torsion spring abuts against the inner wall of the installation slot 145; the other end of the torsion spring abuts against the pressing plate 144. The elastic member 146 is used to provide an elastic stress that drives the rotating end away from the installation slot 145 so that the locking end is pressed into the locking position 151; and the rotating end is used to rotate into the installation slot 145 under the action of an external force, and drive the locking end to exit the locking position 151.

[0066] On the basis of this structure, during assembly, the second rotating shaft 147 can be passed through the torsion spring and the pressure plate 144 so that the pressure plate 144 can be rotatably connected to the second rotating shaft 147; and one end of the torsion spring can be pressed against the pressure plate 144, and the other end of the torsion spring can be pressed against the inner wall of the installation groove 145, and the pressure plate 144 can automatically move away from the installation groove 145 under the drive of elastic stress.

[0067] When locking, when the locking column 143 slides in the guide section, the locking column 143 is pressed by the side wall of the connecting groove 15, thereby driving the rotating end to overcome the elastic force of the torsion spring and rotate into the installation groove 145. When the limiting rod 141 drives the locking column 143 to move to the connection between the guide section and the locking position 151, the locking column 143 is not pressed by the side wall of the connecting groove 15, and the elastic member 146 exerts elastic stress on the pressure plate 144, so that the locking end and the rotating end of the pressure plate 144 rotate and reset, and when the locking end is reset, it rotates into the locking position 151 (the rotating end exits the installation groove 145), and the rotation of the limiting rod 141 is restricted.

[0068] When unlocking, the user presses the rotating end of the pressing plate 144, and the rotating end rotates and drives the locking end to rotate out of the locking position 151, and then rotates the limiting rod 141 away from the connecting position 10 to release the locking effect.

[0069] In this way, by providing a torsion spring, the pressure plate 144 rotates when subjected to external force and releases the locking effect of the locking column 143, and the pressure plate 144 can rotate due to the elastic force of the torsion spring when not subjected to external force, thereby realizing the automatic locking function.

[0070] In addition, the splicing piece further includes a gland 12, which is connected to the splicing seat 11 through a fastener, and the gland 12 presses the connection unit on the splicing seat 11 to prevent the connection unit from being separated from the splicing seat 11. The gland 12 is also provided with a clamping seat 13, which is fixedly connected to the gland 12, and the clamping seat 13 can be used to connect with an external connection bracket.

[0071] Embodiment 2

[0072] See also Figure 1 Different from the first embodiment, the present embodiment discloses a lighting device, which includes a lamp 2 and the locking splicing piece 1 in the first embodiment; wherein, the lamp 2 is provided with a connecting piece 21, and the connecting piece 21 is provided with a snap-fitting portion 22, the connecting piece 21 is used to be plug-fitted with the connecting position 10 on the splicing seat 11, and the snap-fitting portion 22 is used to snap-fit ​​with the limiting component 14 after the limiting component 14 approaches the connecting position 10, so that the connecting piece 21 is locked and connected with the connecting position 10.

[0073] On the basis of this structure, the lamp 2 can be a panel lamp, the connector 21 on the panel lamp can be a connecting column, the clamping portion 22 on the connecting column can be a groove or a protruding block, and the connecting position 10 on the splicing seat 11 is a connecting hole 121. During assembly, the connecting column is first inserted into the connecting hole 121, and then the limiting component 14 is moved close to the connecting position 10, and the limiting rod 141 in the limiting component 14 is clamped and matched with the clamping portion 22 on the connecting column through the clamping groove 142 thereon, so that the connecting column and the connecting position 10 are limitedly connected.

[0074] When the limiting component 14 is close to the connecting column and is snap-connected with the connecting column, the limiting component 14 drives the locking column 143 of the locking component to slide into the locking position 151. Therefore, when the limiting component 14 is connected to the connecting column, the locking component locks the limiting component 14 so that it cannot be separated from the connecting column.

[0075] When unlocking, first pull the pressure plate 144 of the locking assembly to make the locking column 143 on the locking assembly withdraw from the locking position 151, and then move the limiting assembly 14 away from the connecting position 10, so that the clamping limit of the limiting assembly 14 on the connecting column can be released, and the connecting column can withdraw from the connecting position 10 axially.

[0076] Among them, at least two connection units can be arranged on the splicing seat 11, which can be connected to at least two panel lights; in the present application, four connection units are arranged on the splicing seat 11, and one splicing piece can be connected to four panel lights.

[0077] In summary, the locking splicing piece and lighting equipment of the utility model can realize the splicing of multiple panel lights, so that the lighting area can be expanded according to the usage scenario and lighting needs; the panel lights and the splicing pieces are easy to disassemble and assemble, the connection is reliable, and it is not easy to detach due to accidental touch.

[0078] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A locking splicing piece, characterized in that: The invention comprises a splicing seat (11), wherein the splicing seat (11) is provided with a plurality of connection units, a locking position (151) and a connection position (10) for connecting an external connection member (21), wherein the connection unit comprises a limit assembly (14) and a locking assembly, wherein the limit assembly (14) is used to approach or move away from the connection position (10), wherein the limit assembly (14) is used to be in a locked state of locking the connection position (10) after approaching the connection position (10), and wherein the limit assembly (14) is used to be in an unlocked state of unlocking the connection position (10) after moving away from the connection position (10); wherein the locking assembly is connected to the limit assembly (14), and wherein the locking assembly is used to maintain the locked state of the limit assembly (14) after entering the locking position (151).

2. The locking splicing piece according to claim 1, characterized in that: The splicing seat (11) is provided with a first rotating shaft (111), and the limiting assembly (14) comprises a limiting rod (141), and the limiting rod (141) is rotatably connected to the first rotating shaft (111); the limiting rod (141) is used to approach or move away from the connecting position (10) during the rotation process.

3. The locking splicing piece according to claim 2, characterized in that: The limiting rod (141) is provided with a clamping groove (142), and the clamping groove (142) is used to be clamped and matched with the external connecting member (21) to limit the axial movement of the external connecting member (21).

4. The locking splicing piece according to claim 2, characterized in that: The locking assembly comprises a locking column (143), and the locking column (143) is arranged on a side of the limiting rod (141) facing away from the connecting position (10); a sliding guide section is provided on the splicing seat (11), and the locking column (143) is slidably connected to the sliding guide section; the sliding guide section comprises a guide section and the locking position (151).

5. The locking splicing piece according to claim 4, characterized in that: The splicing seat (11) is provided with a connecting groove (15), and the connecting groove (15) is formed as the sliding guide section; the guide section and the locking position (151) are arranged at an angle.

6. The locking splicing piece according to claim 5, characterized in that: An undercut structure (153) is provided at the connection point between the guide section and the locking position (151).

7. The locking splicing piece according to claim 4, characterized in that: A limiting portion (152) is provided at the end of the sliding guide section away from the locking position (151).

8. The locking splicing piece according to claim 4, characterized in that: The locking assembly comprises a pressing plate (144), the pressing plate (144) having a locking end and a rotating end, the locking column (143) being arranged on the locking end; a mounting groove (145) is arranged in the limiting rod (141), the pressing plate (144) being rotatably arranged in the mounting groove (145); the rotating end is used for rotating into or out of the mounting groove (145), and driving the locking end to rotate out of or into the locking position (151).

9. The locking splicing piece according to claim 8, characterized in that: An elastic member (146) is provided in the mounting groove (145), and the elastic member (146) is a torsion spring. The pressure plate (144) is rotatably connected to the mounting groove (145) via a second rotating shaft (147), and the torsion spring is sleeved on the second rotating shaft (147); one end of the torsion spring abuts against the inner wall of the mounting groove (145), and the other end of the torsion spring abuts against the pressure plate (144).

10. A lighting device, characterized in that: The invention comprises a lamp (2) and a locking splicing piece (1) as claimed in any one of claims 1 to 9, wherein the lamp (2) is provided with a connecting piece (21), and the connecting piece (21) is provided with a snap-fitting portion (22), the connecting piece (21) is plug-fitted with the connecting position (10), and the snap-fitting portion (22) is used to snap-fit ​​with the limiting component (14) after the limiting component (14) approaches the connecting position (10), so that the connecting piece (21) is locked and connected with the connecting position (10).

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