Lamp head locking device

Abstract

The utility model relates to a lamp head locking device which comprises a locking piece arranged on an arm support. The arm support is rotationally connected with the lamp holder through a rotating shaft assembly. The rotating shaft assembly is provided with a limiting disc which is matched with the lamp holder and moves synchronously with the lamp holder. The locking piece comprises a push-pull column which is selectively matched with the limiting disc. The locking piece is arranged on the arm support, and the push-pull column in the locking piece is matched with the limiting disc on the rotating shaft assembly. Due to the fact that the limiting disc and the lamp holder move synchronously, the push-pull column can be flexibly selected to be matched with different positions on the limiting disc according to different rotating angles of the lamp holder, multi-angle and multi-position limiting of the lamp holder is achieved, and the limitation that a traditional limiting structure is single in limiting position is broken through. And a more flexible limiting position can better adapt to various placement states and possible shaking conditions of the lamp in the transportation process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp field especially relates to a lamp head locking device. BACKGROUND

[0002] In the field of searchlight or stage lamp technology, the lamp head of the lamp has the function of rotating relative to the support arm, which is designed to meet the diversified stage lighting irradiation requirements. However, in the transportation link of the lamp, due to the rotatable characteristics of the lamp head, there is a risk of collision caused by rotation and resulting in damage to the lamp. To solve this problem, most lamps use a structure that sets a limiting lock on the support arm to limit the rotation of the lamp head. Specifically, a common approach is to install a limiting lock on the lamp head, when the lamp head needs to be limited, the limiting lock will extend outward and insert into the limiting slot pre-set on the support arm, so as to realize the limitation of the rotation of the lamp head. But this structure has obvious defects, the limiting position of the lamp head is relatively fixed and single, in the actual use scene, it is difficult to flexibly adjust the limiting position according to different transportation conditions or lamp placement methods, so as to cannot all-round and effectively guarantee the stability of the lamp head in the transportation process, and cannot avoid the damage risk caused by collision well.

[0003] Another limiting structure is to set the limiting lock on the base. In this design, when the rotation of the lamp head needs to be limited, the limiting lock is extended from the base and then inserted into the bottom of the lamp head to realize the limiting. Although this way changes the position of the limiting lock to some extent, it still cannot get rid of the single limiting structure. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems of the prior art, the utility model provides a lamp head locking device.

[0005] In order to achieve the above purpose, the utility model adopts the main technical scheme:

[0006] A lamp head locking device, comprising a locking piece provided on the arm support, the arm support is rotatably connected with the lamp head through a rotating shaft assembly, a limiting disc cooperating with the lamp head and moving synchronously is arranged on the rotating shaft assembly, and the locking piece comprises a push-pull column selectively cooperating with the limiting disc.

[0007] Further, the rotating shaft assembly comprises a bearing, the outer ring of the bearing is fixedly connected with the arm support, and the inner ring of the bearing is fixedly connected with the lamp head, and a limiting disc is fixedly arranged on the inner ring of the bearing.

[0008] Further, a plurality of limiting grooves are arranged on the limiting disc.

[0009] Further, the limiting grooves are arranged around the circumference of the limiting disc, and the limiting grooves have an open mouth.

[0010] Further, the moving direction of the push-pull column passes through the rotation center of the limiting disc.

[0011] Further, the arm support is provided with a mounting hole for mounting a locking member; the locking member comprises a connecting sleeve matched with the mounting hole; the connecting sleeve is internally provided with a sleeve; the sleeve is slidably connected with a push-pull column.

[0012] Further, the push-pull column is provided with a protrusion at one end away from the limiting disc, the protrusion is arranged at an angle with the push-pull column; the edge of the sleeve is provided with a guide inclined surface matched with the protrusion; the protrusion moves along the guide inclined surface to drive the push-pull column to move along the axial direction of the push-pull column.

[0013] Further, a spring is arranged between the push-pull column and the sleeve to make the protrusion always abut against the guide inclined surface; the sleeve is provided with a stop edge limiting the movement position of the protrusion.

[0014] The beneficial effects of the present application are as follows: the locking member is arranged on the arm support, and the push-pull column in the locking member is matched with the limiting disc on the rotating shaft assembly. Since the limiting disc moves synchronously with the lamp head, it means that the push-pull column and the limiting disc can be matched at different positions flexibly according to different rotating angles of the lamp head, so that the lamp head can be limited at multiple angles and positions, and the limitation position is more flexible, which can better adapt to various placement states and possible shaking conditions of the lamp during transportation. No matter how the lamp is placed, the matching position of the locking member and the limiting disc can be adjusted to accurately limit the rotation of the lamp head, and the risk of damage caused by the collision of the lamp head due to rotation is reduced to the greatest extent, which provides more reliable protection for the safety of the lamp during transportation. The present application is designed and improved based on the existing stage lamp structure, the lamp head and the arm support are connected based on the rotating shaft assembly, and the limiting disc and the locking member are added on this basis. This design makes it better adapt to most existing stage lamps, and it can be installed and used without large-scale modification of the overall structure of the lamp, which has a wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0016] Figure 1 is a schematic view of the arm support structure of the present application;

[0017] Figure 2 is a sectional view of the arm support of the utility model;

[0018] Figure 3 is an exploded view of the structure of the utility model;

[0019] Figure 4 is an exploded view of the locking piece of the utility model;

[0020] Figure 5 is a schematic view of the sleeve structure of the utility model;

[0021] Mark explanation:

[0022] 100, arm support, 110, rotating shaft assembly, 120, limiting disc, 121, limiting groove, 130, mounting hole, 200, locking piece, 210, push-pull column, 211, protruding block, 220, sleeve, 221, guide inclined surface, 222, blocking edge, 230, connecting sleeve. Specific implementation

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] In the description of the utility model, it should be pointed out that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "be equipped with", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0026] Embodiment, please refer to Figure 1 As shown in the figure:

[0027] A lamp head locking device, including the locking piece 200 that is arranged on the arm support 100;The arm support 100 is rotatably connected with the lamp holder through the rotating shaft assembly 110;The rotating shaft assembly 110 is equipped with the limit disc 120 that is matched with the lamp holder and synchronous motion;The locking piece 200 includes the push-pull column 210 that is selectively matched with the limit disc 120.Different from the conventional limit structure, the utility model is through setting locking piece 200 on arm support 100, and the push-pull column 210 in locking piece 200 is matched with the limit disc 120 on rotating shaft assembly 110.Because the limit disc 120 is synchronous motion with the lamp holder, this means that can flexibly select push-pull column 210 and limit disc 120 on different positions to cooperate according to the different rotating angles of lamp holder, to realize the limit of lamp holder multi-angle, multi-position, break through the limitation of single limit position of conventional limit structure.Can more flexible limit position can better adapt to the various placement state and possible shaking condition of lamp in the process of transportation.No matter how the lamp is placed, the cooperation position of locking piece 200 and limit disc 120 can be adjusted to accurately limit the rotation of the lamp holder, thereby minimizing the risk of damage caused by the collision of the lamp holder due to rotation, and providing more reliable protection for the safety of the lamp during transportation.The utility model is based on the design improvement of the existing stage lamp structure, connects the lamp holder and the arm support 100 based on the rotating shaft assembly 110, and increases the limit disc 120 and the locking piece 200 based on this, which makes it better adapt to most of the existing stage lamps, without the need for large-scale modification of the overall structure of the lamp, so that it can be installed and used, and has a wide application prospect.

[0028] In an embodiment, the rotating shaft assembly 110 includes a bearing;The outer ring of the bearing is fixedly connected with the arm support 100, and the inner ring of the bearing is fixedly connected with the lamp holder;The limit disc 120 is fixedly arranged on the inner ring of the bearing.This structure makes the lamp holder can flexibly rotate relative to the arm support 100.And the bearing is a common structure at the connection between the lamp holder and the arm support 100, has wide applicability, and has better universality through this kind of connection;

[0029] In an embodiment, the limiting disc 120 is provided with a plurality of limiting grooves 121. This allows the push-pull column 210 of the locking member 200 to cooperate with the limiting grooves 121 at different positions. The presence of the plurality of limiting grooves 121 provides more precise limiting options. Each limiting groove 121 represents a specific lamp head angle position. Compared with the traditional single position limiting method, this design can more accurately control the stopping position of the lamp head.

[0030] In an embodiment, the limiting grooves 121 are arranged circumferentially around the limiting disc 120. This allows the push-pull column 210 of the locking member 200 to cooperate with the limiting grooves 121 at any angle as long as the lamp head is turned to the appropriate position. This circumferential arrangement matches the circumferential rotation of the lamp head, making it easy for the operator to quickly find the corresponding limiting position in actual use. Moreover, when the lamp head needs to be locked, the push-pull column 210 can be easily aligned with the limiting grooves 121 regardless of the rotation state of the lamp head, improving the convenience and efficiency of operation; circumferential arrangement of the limiting grooves 121 can make full use of the circumferential space of the limiting disc 120, without occupying excessive planar space. The limiting grooves 121 have an open mouth, which facilitates the insertion of the push-pull column 210. The open mouth design allows the push-pull column 210 to enter the limiting groove 121 without requiring very precise alignment. In actual operation, especially when the lamp head needs to be quickly locked before transportation of the lamp, even in the case of some shaking or imprecise operation, the push-pull column 210 can still slide into the limiting groove 121 along the open mouth, effectively limiting the lamp head and reducing the difficulty of operation.

[0031] In an embodiment, the movement direction of the push-pull column 210 passes through the rotation center of the limiting disc 120. During operation, the push-pull column 210 moves along a direction passing through the rotation center, making it easier to accurately align with the limiting grooves 121 or other cooperating structures on the limiting disc 120. The push-pull column 210 moves along a direction passing through the rotation center, and its movement trajectory is relatively fixed and concentrated, without the need to reserve excessive additional space to accommodate different insertion angles or avoid interference. This helps to make the overall structure of the lamp head locking device more compact, achieving effective lamp head locking function without increasing excessive space occupation, which is beneficial to the miniaturization and lightweight design of the lamp, especially suitable for application in stage lamps with limited space.

[0032] In an embodiment, the arm bracket 100 is provided with a mounting hole 130 for mounting the locking member 200; the locking member 200 includes a connecting sleeve 230 cooperating with the mounting hole 130; the cooperation between the connecting sleeve 230 and the mounting hole 130 provides a stable mounting basis for the locking member 200. The connecting sleeve 230 is provided with a sleeve 220; the sleeve 220 is slidably connected with the push-pull column 210.

[0033] In an embodiment, the push-pull column 210 is provided with a protrusion 211 arranged at an angle with the push-pull column 210 at one end away from the limiting disc 120; the edge of the sleeve 220 is provided with a guide slope 221 matched with the protrusion 211; the protrusion 211 moves along the guide slope 221 to drive the push-pull column 210 to move along the axial direction of the push-pull column 210. When it is needed to push the push-pull column 210 to move along the axial direction, the component matched with the protrusion 211 is rotated to make the protrusion 211 move along the guide slope 221. Since the protrusion 211 is arranged at an angle with the push-pull column 210, the movement of the protrusion 211 on the slope can be converted into the axial linear movement of the push-pull column 210, so as to realize the conversion of the movement form and meet the requirement that the push-pull column 210 needs to move along the axial direction to cooperate with the limiting disc 120 in the head locking device of the lamp.

[0034] In an embodiment, a spring is arranged between the push-pull column 210 and the sleeve 220 to make the protrusion 211 always abut against the guide slope 221; the sleeve 220 is provided with a stop edge 222 limiting the movement position of the protrusion 211. The stop edge 222 is usually provided with two, and the included angle between the two stop edges 222 is 180°; the arrangement of the spring makes the push-pull column 210 always subject to a force in the direction of the guide slope 221, so as to ensure that the protrusion 211 can always abut against the guide slope 221. In this way, at any time, as long as an external force is applied to the component related to the protrusion 211, the protrusion 211 can immediately move along the slope for movement conversion, so as to realize the axial movement of the push-pull column 210. This stable contact relationship helps to improve the response speed of the device and ensure that the push-pull column 210 can timely and accurately act when it is needed to lock or unlock the lamp head. The existence of the stop edge 222 can effectively limit the movement position of the protrusion 211 and prevent the protrusion 211 from excessively moving on the guide slope 221 and deviating from the normal working range. This makes the movement of the protrusion 211 be restricted in a reasonable range, further ensures that the axial movement of the push-pull column 210 can be carried out as expected, and improves the precision and reliability of the whole device in the movement control aspect.

[0035] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in the related technical field based on the content of the present application is also included in the patent protection range of the present application.

Claims

1. A luminaire head locking device, characterized by: The arm support (100) is rotatably connected with the lamp holder through a rotating shaft assembly (110), and the rotating shaft assembly (110) is provided with a limiting disc (120) matched with the lamp holder and moving synchronously.

2. A light fixture head locking device according to claim 1, characterized in that: The rotating shaft assembly (110) comprises a bearing, the outer ring of the bearing is fixedly connected with the arm support (100), and the inner ring of the bearing is fixedly connected with the lamp holder.

3. A light fixture head locking device according to claim 2, characterized in that: The limiting disc (120) is provided with a plurality of limiting grooves (121).

4. A light fixture head locking device according to claim 3, characterized in that: The limiting grooves (121) are arranged around the circumference of the limiting disc (120), and the limiting grooves (121) have an open end.

5. A light fixture head locking device according to claim 1, characterized in that: The moving direction of the push-pull column (210) passes through the rotation center of the limiting disc (120).

6. A light fixture head locking device according to claim 1, characterized in that: The arm support (100) is provided with a mounting hole (130) for mounting the locking member (200), the locking member (200) comprises a connecting sleeve (230) matched with the mounting hole (130), the connecting sleeve (230) is provided with a sleeve (220) inside, and the push-pull column (210) is slidably connected in the sleeve (220).

7. A light fixture head locking device according to claim 6, characterized in that: The end of the push-pull column (210) away from the limiting disc (120) is provided with a protruding block (211) arranged at an angle with the push-pull column (210), the edge of the sleeve (220) is provided with a guide inclined surface (221) matched with the protruding block (211), and the protruding block (211) moves along the guide inclined surface (221) to drive the push-pull column (210) to move along the axial direction of the push-pull column (210).

8. A light fixture head locking device according to claim 7, characterized in that: A spring is arranged between the push-pull column (210) and the sleeve (220) to make the protruding block (211) always abut against the guide inclined surface (221), and the sleeve (220) is provided with a stop edge (222) limiting the moving position of the protruding block (211).

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