Rotating mechanism of emergency lighting lamp

Abstract

The utility model belongs to the technical field of emergency lighting equipment, and particularly relates to a rotating mechanism of an emergency lighting lamp, which comprises a shell, a middle shaft is assembled in the shell, a first driving motor for driving the shell to rotate horizontally is assembled in the shell, a rotating shaft perpendicular to the middle shaft is rotatably arranged in the shell through a bearing, and the first driving motor is connected with the rotating shaft. The rotating shaft comprises a hollow pipe, an assembling disc and a connecting shaft, a second driving motor used for driving the rotating shaft to rotate is assembled in the shell, an angle compensation triggering mechanism used for guaranteeing the rotating angle of the rotating shaft is arranged in the shell, and through the tooth ratio design of a first gear and a second gear, accurate control over the rotating angle of the rotating shaft is achieved; therefore, accurate control over the rotation angle of the rotating shaft is achieved, the accuracy of judgment of one-circle rotation of the emergency lighting lamp is improved, the emergency lighting lamp can stably and reliably operate in different working scenes, and the effect and safety of emergency lighting are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of emergency lighting equipment technology, specifically a rotating mechanism for an emergency lighting lamp. Background Technology

[0002] Emergency lights on fire trucks are devices that provide illumination in special circumstances. When fire trucks are on duty at a scene, such as a fire scene, an earthquake rescue scene, or a road accident scene, and encounter power outages or insufficient natural light, emergency lights can provide sufficient light to ensure that firefighters can carry out various rescue operations.

[0003] Current emergency lighting technologies suffer from the following drawbacks: In the field of emergency lighting, existing rotating mechanisms have serious angle control problems. Conventional designs involve a rotating shaft driving an angle sensing disc, with the trigger notch designed as a concave arc. Under this design, the microswitch is triggered as soon as the trigger wheel enters the trigger notch, causing premature triggering. This results in the external controller prematurely stopping the drive, preventing the shaft from rotating the connected lighting fixture 360 ​​degrees, leading to errors. Consequently, the lighting equipment cannot accurately achieve a full rotation in different working scenarios, affecting the lighting effect. Therefore, to address these issues, a new rotating mechanism for emergency lighting is proposed. Utility Model Content

[0004] To address the shortcomings of existing emergency lighting, a rotating mechanism for emergency lighting is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The rotating mechanism of the emergency lighting lamp of this utility model includes a housing, a central shaft is assembled inside the housing, a first drive motor for driving the housing to rotate horizontally is assembled inside the housing, a rotating shaft perpendicular to the central shaft is rotatably arranged inside the housing through bearings, the rotating shaft includes hollow tubes for assembling lighting lamps at both ends, one end of the hollow tube extends outside the housing, and the end located outside is an assembly plate, and a connecting shaft for connecting the two hollow tubes is also included. A second drive motor for driving the rotating shaft to rotate is assembled inside the housing.

[0006] Preferably, the housing is provided with an angle compensation trigger mechanism to ensure the rotation angle of the shaft.

[0007] Preferably, the angle compensation triggering mechanism includes a first gear fixedly disposed on the periphery of the hollow tube, and an angle sensing disk rotatably disposed on the inner wall of the housing. A second gear meshing with the first gear is fixedly disposed on one side of the angle sensing disk. A trigger notch is provided on the angle sensing disk. The mechanism also includes a micro switch fixedly mounted on the inner wall of the housing. A trigger wheel that cooperates with the trigger notch is provided on the actuating end of the micro switch.

[0008] Preferably, a push rod is fixedly provided at the top of the central shaft, and two stroke trigger switches that cooperate with the push rod are fixedly provided at the top of the inner part of the housing.

[0009] Preferably, a through hole for threading cables is provided on one side of the hollow tube.

[0010] Preferably, the inner wall of the housing is equipped with a baffle on the periphery of the angle compensation triggering mechanism.

[0011] Preferably, a collar is slidably fitted onto the outer wall of the housing at the hollow tube.

[0012] The beneficial effects of this utility model are:

[0013] This invention provides a rotating mechanism for an emergency lighting lamp. Precise control of the rotation angle is one of its core advantages. In the field of emergency lighting, accurate rotation angle control is crucial for lighting effects. Through the gear ratio design of the first and second gears, precise control of the shaft rotation angle is achieved. When the first gear rotates 360 degrees, the second gear drives the angle sensing disk to rotate to a specific angle. This angle setting is not arbitrary but based on the matching characteristics between the trigger notch and the trigger wheel, as well as in-depth analysis of trigger errors. The gear ratio design of the first and second gears cleverly compensates for this error, thereby achieving precise control of the shaft rotation angle. This improves the accuracy of judging one rotation of the emergency lighting lamp, enabling the emergency lighting lamp to operate stably and reliably in different working scenarios, enhancing the effect and safety of emergency lighting. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of the internal structure of the casing of this utility model;

[0016] Figure 2 This is a three-dimensional structural view of the rotating shaft, hollow tube, and angle compensation triggering mechanism of this utility model;

[0017] Figure 3 This is a three-dimensional structural view of the angle compensation triggering mechanism of this utility model;

[0018] Figure 4 This is a three-dimensional structural view of the entire utility model;

[0019] Figure 5 This is a front view of the internal structure of the shell of this utility model;

[0020] Legend:

[0021] 1. Housing; 2. Central shaft; 3. First drive motor; 4. Rotating shaft; 5. Hollow tube; 6. Assembly plate; 7. Connecting shaft; 8. Second drive motor; 9. Angle compensation trigger mechanism; 10. First gear; 11. Angle sensing plate; 12. Second gear; 13. Trigger notch; 14. Micro switch; 15. Trigger wheel; 16. Push rod; 17. Stroke trigger switch; 18. Through hole; 19. Baffle; 20. Collar. Detailed Implementation

[0022] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] Example 1: Please refer to Figures 1-5 The present invention discloses a rotating mechanism for an emergency lighting lamp, comprising a housing 1, a central shaft 2 assembled within the housing 1, a first drive motor 3 for driving the housing 1 to rotate horizontally, a rotating shaft 4 perpendicular to the central shaft 2 rotatably mounted within the housing 1 via bearings, the rotating shaft 4 including hollow tubes 5 at both ends for assembling lighting lamps, one end of each hollow tube 5 extending outside the housing 1, with the external end serving as an assembly plate 6, and a connecting shaft 7 for connecting the two hollow tubes 5. A second drive motor 8 for driving the rotating shaft 4 to rotate is also assembled within the housing 1.

[0025] The housing 1 is internally equipped with an angle compensation trigger mechanism 9 for ensuring the rotation angle of the rotating shaft 4. The angle compensation trigger mechanism 9 includes a first gear 10 fixedly mounted on the periphery of the hollow tube 5, and an angle sensing disk 11 rotatably mounted on the inner wall of the housing 1. A second gear 12, meshing with the first gear 10, is fixedly mounted on one side of the angle sensing disk 11. A trigger notch 13 is provided on the angle sensing disk 11. The mechanism also includes a micro switch 14 fixedly mounted on the inner wall of the housing 1. A trigger wheel 15, cooperating with the trigger notch 13, is provided on the actuating end of the micro switch 14. During operation, after the first drive motor 3 starts, it drives the housing 1 to rotate horizontally, thereby causing the lighting on the mounting plate 6 to rotate horizontally. Then, the second drive motor 8 drives the rotating shaft 4 to rotate, causing the first gear 10 to rotate. The first gear 10 meshes with the second gear 12. When the first gear 10 rotates, it drives the second gear 12 to rotate through the gear ratio, and the second gear 12 drives the angle sensing disk 11 to rotate. When the trigger wheel 15 rolls on the angle sensing disk 11, the trigger notch 13 is a concave arc structure. The trigger wheel 15 will trigger the micro switch 14 as soon as it enters the trigger notch 13. The arc structure of the trigger notch 13 makes effective contact between the trigger wheel 15 and the trigger notch 13 before the trigger wheel 15 rolls to the center of the trigger notch, causing the trigger wheel 15 to be triggered in advance. This is because the position and angle of the contact point between the trigger wheel 15 and the trigger notch 13 are constantly changing. The trigger wheel 15 makes effective contact with the trigger notch before reaching the center of the trigger notch. The structural design of this utility model compensates for the error by setting the gear ratio between the first gear 10 and the second gear 12. The gear ratio between the first gear 10 and the second gear 12 is designed so that when the first gear 10 rotates 360 degrees, the second gear 12 drives the angle sensing disk 11 to rotate to a specific angle. This angle allows the trigger wheel 15 to trigger the micro switch 14 when the trigger wheel 15 rolls to the vicinity of the center of the trigger notch.

[0026] For example: Suppose that the number of teeth of the first gear 10 is z1 and the number of teeth of the second gear 12 is z2;

[0027] When the trigger wheel 15 triggers the trigger notch 13, the second gear 12 rotates by an angle of θ degrees (this angle corresponds to the position of the trigger wheel triggering the micro switch); since the second gear 12 rotates by an angle of θ degrees when the first gear 10 rotates one revolution (360 degrees), according to the principle of gear transmission, their gear ratio is inversely proportional to the angle ratio;

[0028] Right now

[0029] For example, if the trigger wheel 15 triggers the trigger notch 13, the second gear 12 rotates at an angle θ = 270 degrees (this is just an assumed angle; the specific angle needs to be determined based on the actual situation); then the gear ratio is...

[0030] In other words, when the gear ratio of the first gear 10 to the second gear 12 is designed to be 3:4, when the first gear 10 rotates 360 degrees and the second gear 12 rotates 270 degrees, the trigger wheel 15 will just trigger the trigger notch 13.

[0031] This design effectively avoids the mismatch between the trigger notch 13 and the trigger wheel 15 on the micro switch 14, improves the accuracy of judging one rotation of the emergency light, and enables the emergency light to operate stably and reliably in different working scenarios, thereby enhancing the effectiveness and safety of emergency lighting.

[0032] Example 2:

[0033] Similarly, the angle compensation trigger mechanism 9 mentioned above can also be set to act on the central axis 2, which can also accurately control the horizontal rotation angle of the housing 1. The specific implementation method is the same as above and will not be repeated here.

[0034] Furthermore, a top rod 16 is fixedly installed at the top of the central shaft 2, and two travel trigger switches 17 that cooperate with the top rod 16 are fixedly installed at the top of the inner part of the housing 1. During operation, when the housing 1 rotates horizontally, it will drive the travel trigger switches 17 to rotate. During this process, when the housing 1 drives the travel trigger switches 17 to rotate to a specific position, the travel trigger switches 17 are triggered and contact the top rod 16. This triggering action is related to the horizontal rotation angle of the housing 1. By triggering the travel trigger switches 17, the horizontal rotation angle of the housing 1 is limited. When the housing 1 rotates to a certain position, the travel trigger switches 17 are triggered, so that the housing 1 can no longer continue to rotate, thereby limiting the horizontal rotation angle of the housing 1. This effectively controls the horizontal rotation angle of the housing 1, improves the stability of emergency lighting, and avoids collisions or damage to lighting equipment due to excessive rotation angle of the housing 1.

[0035] Furthermore, a through hole 18 for cable threading is provided on one side of the hollow tube 5, and a baffle 19 is installed on the inner wall of the housing 1 around the angle compensation triggering mechanism 9. During operation, the cable passes through the through hole 18 on one side of the hollow tube 5 to provide power to the emergency lighting. The baffle 19 is set around the angle compensation triggering mechanism 9 to prevent the cable from interfering with the angle compensation triggering mechanism 9. The baffle 19 can block the cable and prevent it from contacting the angle compensation triggering mechanism 9, thereby ensuring the normal operation of the angle compensation triggering mechanism 9 while isolating and protecting the cable.

[0036] Furthermore, a collar 20 is slidably fitted on the outer wall of the housing 1 at the hollow tube 5; during operation, the collar 20 is fitted on the hollow tube 5, and the collar 20 increases the stability of the hollow tube 5 and prevents the hollow tube 5 from shaking during rotation. The collar 20 can limit the position of the hollow tube 5 and keep it stable during rotation.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A rotating mechanism for an emergency lighting lamp, characterized in that: The device includes a housing (1), a central shaft (2) is assembled inside the housing (1), a first drive motor (3) for driving the housing (1) to rotate horizontally is assembled inside the housing (1), a rotating shaft (4) perpendicular to the central shaft (2) is rotatably arranged inside the housing (1) via bearings, the rotating shaft (4) includes hollow tubes (5) for assembling lighting lamps located at both ends, one end of the hollow tube (5) extends out of the housing (1), and the outer end is an assembly plate (6), and also includes a connecting shaft (7) for connecting the two hollow tubes (5), and a second drive motor (8) for driving the rotating shaft (4) to rotate inside the housing (1); The housing (1) is provided with an angle compensation triggering mechanism (9) for ensuring the rotation angle of the rotating shaft (4). The angle compensation triggering mechanism (9) includes a first gear (10) fixedly disposed on the periphery of the hollow tube (5) and an angle sensing disk (11) rotatably disposed on the inner wall of the housing (1). A second gear (12) meshing with the first gear (10) is fixedly disposed on one side of the angle sensing disk (11). A trigger notch (13) is provided on the angle sensing disk (11). It also includes a micro switch (14) fixedly mounted on the inner wall of the housing (1). A trigger wheel (15) cooperating with the trigger notch (13) is provided on the working end of the micro switch (14).

2. The rotating mechanism of an emergency lighting lamp according to claim 1, characterized in that: A push rod (16) is fixedly installed at the top of the central shaft (2), and two stroke trigger switches (17) that cooperate with the push rod (16) are fixedly installed at the top of the inner part of the housing (1).

3. The rotating mechanism of an emergency lighting lamp according to claim 1, characterized in that: The hollow tube (5) has a through hole (18) on one side for threading cables.

4. The rotating mechanism of an emergency lighting lamp according to claim 1, characterized in that: The inner wall of the housing (1) is equipped with a baffle (19) around the angle compensation triggering mechanism (9).

5. The rotating mechanism of an emergency lighting lamp according to claim 1, characterized in that: The outer wall of the housing (1) is slidably fitted with a collar (20) at the hollow tube (5).

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