Stage lamp with large-angle rotation detection function

Abstract

The application discloses a stage lamp with a large-angle rotation detection function, which comprises a supporting piece, a pivoted piece pivoted to the supporting piece, a first rotating wheel and a second rotating wheel in mutual engagement transmission, and the center line of the first rotating wheel coincides with the rotation center line of the pivoted piece, wherein the first rotating wheel is static, the second rotating wheel revolves around the first rotating wheel with the rotation of the pivoted piece, or the first rotating wheel rotates synchronously with the pivoted piece, the second rotating wheel is fixed in position, and when the pivoted piece rotates more than 360 degrees from a first limit position to a second limit position, the rotation angle of the second rotating wheel is less than 360 degrees. The application converts the rotation of the pivoted piece more than 360 degrees into the rotation of the second rotating wheel within 360 degrees, calculates the synchronous rotation angle of the pivoted piece according to the transmission ratio of the second rotating wheel and the first rotating wheel after the rotation angle of the second rotating wheel is measured, and realizes the detection of the rotation angle more than 360 degrees by using a common angle position detector, so that the cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of stage lighting technology, and more specifically, to a stage light with a large-angle rotation detection function. Background Technology

[0002] To change the projection position of the light spot, stage lights rotate the lamp head around the support arm at a large angle, and the support arm rotates around the chassis at a large angle. To alter the light spot effect, some internal effect components also rotate at large angles, sometimes exceeding 360 degrees. The support arm, in particular, typically rotates around 630 degrees around the chassis. Ordinary angle position detectors can only detect angle changes within 360 degrees. For rotations exceeding 360 degrees, they cannot determine the rotation cycle, requiring multiple positioning points to identify the cycle, or the use of more expensive angle position detectors capable of determining the rotation cycle. This significantly increases the cost of detecting rotations exceeding 360 degrees. Summary of the Invention

[0003] To overcome at least one of the defects described in the prior art, this invention provides a stage light with a large-angle rotation detection function, which can detect rotation angles exceeding 360 degrees using a common angular position detector, effectively reducing costs.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a stage lamp with a large-angle rotation detection function, including a support member, a pivot member pivotally connected to the support member, a first rotating wheel and a second rotating wheel that mesh and drive each other, wherein the center line of the first rotating wheel coincides with the rotation center line of the pivot member, and further includes an angular position detector for detecting the rotation angle of the second rotating wheel, wherein the first rotating wheel is stationary, and the second rotating wheel revolves around the first rotating wheel as the pivot member rotates, or the first rotating wheel rotates synchronously with the pivot member, and the position of the second rotating wheel is fixed; the transmission ratio between the second rotating wheel and the first rotating wheel is greater than 1:1, and when the pivot member rotates more than 360 degrees from the first limit position to the second limit position, the rotation angle of the second rotating wheel is less than 360 degrees.

[0005] The stage light with large-angle rotation detection function converts the rotation of the pivot member exceeding 360 degrees into a rotation of the second rotating wheel within 360 degrees through a second rotating wheel with a transmission ratio greater than 1:1 and the first rotating wheel. An angular position detector is used to detect the rotation angle of the second rotating wheel. When the first rotating wheel is stationary and the second rotating wheel revolves around the first rotating wheel as the pivot member rotates, the first rotating wheel has rotated by the same angle in the opposite direction relative to the pivot member. When the first rotating wheel rotates synchronously with the pivot member and the second rotating wheel is in a fixed position, the first rotating wheel has rotated by the same angle in the same direction as the pivot member. Therefore, the synchronous rotation angle of the pivot member can be calculated based on the transmission ratio between the second and first rotating wheels. This invention achieves the detection of rotation angles exceeding 360 degrees using a common angular position detector, eliminating the need for multiple positioning points to identify the rotation cycle or the use of more expensive angular position detectors capable of determining the rotation cycle, effectively reducing costs.

[0006] Furthermore, when the first rotating wheel is stationary, and the second rotating wheel revolves around the first rotating wheel as the pivot member rotates, the pivot shaft of the pivot member is fixed to the support member. The pivot member is pivotally connected to the pivot shaft via a fixedly connected bushing. Both the first and second rotating wheels are located within the pivot member. The first rotating wheel is fixed to the pivot shaft, and the second rotating wheel is pivotally connected to the pivot member. When the pivot member rotates, both the first rotating wheel and the pivot shaft remain stationary. The bushing rotates synchronously with the pivot member. The second rotating wheel revolves around the first rotating wheel as the pivot member rotates and rotates synchronously. By detecting the rotation angle of the second rotating wheel using the angular position detector and calculating the transmission ratio, the opposite rotation angle of the first rotating wheel relative to the pivot member can be determined, thus yielding the rotation angle of the pivot member. Placing both the first and second rotating wheels within the pivot member saves space within the support member.

[0007] Furthermore, when the first rotating wheel rotates synchronously with the pivot member, and the second rotating wheel is in a fixed position, the pivot member is fixedly connected to the pivot shaft. The pivot shaft is rotatably pivotally connected to a bushing fixedly connected to the support member. Both the first and second rotating wheels are located within the support member. The first rotating wheel is fixed to the pivot shaft, and the second rotating wheel is pivotally connected to the support member. When the pivot member rotates, the pivot shaft rotates synchronously with the first rotating wheel, while the bushing remains stationary. The second rotating wheel is also fixed in position, rotating only under the drive of the first rotating wheel. By detecting the rotation angle of the second rotating wheel using the angular position detector and calculating the transmission ratio, the synchronous rotation angle of the first rotating wheel and the pivot member can be determined. Placing both the first and second rotating wheels within the support member facilitates the design of a waterproof structure.

[0008] Furthermore, the transmission ratio between the second rotating wheel and the first rotating wheel is greater than 3:2. Thus, when the second rotating wheel rotates 360 degrees, the maximum rotation angle of the pivot member can reach at least 540 degrees, satisfying general large-angle rotation requirements.

[0009] Furthermore, when the pivot member rotates from the first extreme position to the second extreme position, the maximum rotation angle range is between 540 degrees and 720 degrees. This conforms to the typical rotation range of components within a stage light.

[0010] Furthermore, the first and / or second extreme positions of the pivot member are defined by a limiting member. That is, the rotation range of the pivot member is physically restricted to prevent damage to the wiring connecting the pivot member and the support member caused by the pivot member rotating beyond its range.

[0011] Furthermore, the second rotating wheel indirectly meshes with the first rotating wheel. Since the transmission ratio between the second rotating wheel and the first rotating wheel is greater than 1:1, the radius of the second rotating wheel is generally larger than that of the first rotating wheel. By setting a transmission component between the second rotating wheel and the first rotating wheel to allow the second rotating wheel to indirectly mesh with the first rotating wheel, it is possible to install the second rotating wheel at a greater distance from the first rotating wheel, thus finding a suitable position for installation.

[0012] Furthermore, the second rotating wheel and the first rotating wheel are driven by a synchronous belt. Synchronous belt drive saves more space, and since the transmission force between the second rotating wheel and the first rotating wheel is small, only the second rotating wheel needs to be rotated, so the synchronous belt will not be stretched to the point of deformation, resulting in small transmission error.

[0013] Furthermore, the first rotating wheel has a wire-passing hole at its center. The wire connecting the pivot member and the support member can pass through the wire-passing hole, realizing the wire-passing function of a single pivot shaft.

[0014] Furthermore, the angular position detector includes a magnet attached to the center of the second rotating wheel and a magnetic encoder stationary relative to the second rotating wheel, the magnetic encoder being arranged opposite to the magnet. The combination of the magnetic encoder and the magnet provides higher accuracy than a typical angular position detector, and is less susceptible to interference from stage lighting, exhibiting strong stability.

[0015] Furthermore, the pivot member contains a light-emitting element. The light emitted by the light-emitting element is projected to form light spots, producing various stage effects.

[0016] Furthermore, the support member is the housing of the stage light, and the pivot member is the support arm and lamp head of the stage light, with the lamp head pivotally connected to the support arm. Since the support arm has a large rotation range, generally exceeding 540 degrees, the angular position detector can ultimately detect the rotation angle of the support arm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the stage lamp with large-angle rotation detection function according to the present invention.

[0018] Figure 2 yes Figure 1 Enlarged structural diagram of part A in the middle.

[0019] Figure 3 This is a cross-sectional structural diagram of the stage lamp with large-angle rotation detection function of the present invention.

[0020] Figure 4 yes Figure 3 Enlarged structural diagram of part B in the middle.

[0021] In the picture:

[0022] 100, First rotating wheel; 110, Wire hole; 200, Second rotating wheel; 300, Synchronous belt; 400, Angular position detector; 410, Magnet; 420, Magnetic encoder; 500, Pivot shaft; 510, Drive wheel; 520, Motor; 600, Bushing; 700, Lamp holder; 800, Support arm; 900, Chassis. Detailed Implementation

[0023] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0024] like Figures 1 to 4 This invention provides a stage lamp with a large-angle rotation detection function, including a support member, a pivot member pivotally connected to the support member, a first rotating wheel 100 and a second rotating wheel 200 that mesh and drive each other, wherein the center line of the first rotating wheel 100 coincides with the rotation center line of the pivot member, and further includes an angular position detector 400 for detecting the rotation angle of the second rotating wheel 200, wherein the first rotating wheel 100 is stationary, and the second rotating wheel 200 revolves around the first rotating wheel 100 as the pivot member rotates, or the first rotating wheel 100 rotates synchronously with the pivot member, and the position of the second rotating wheel 200 is fixed; the transmission ratio between the second rotating wheel 200 and the first rotating wheel 100 is greater than 1:1, and when the pivot member rotates more than 360 degrees from the first limit position to the second limit position, the rotation angle of the second rotating wheel 200 is less than 360 degrees.

[0025] The stage light with large-angle rotation detection function converts the rotation of the pivot member exceeding 360 degrees into a rotation of the second rotating wheel 200 within 360 degrees through the transmission ratio of the second rotating wheel 200 (greater than 1:1) and the first rotating wheel 100. An angular position detector 400 detects the rotation angle of the second rotating wheel 200. When the first rotating wheel 100 is stationary and the second rotating wheel 200 revolves around the first rotating wheel 100 as the pivot member rotates, the first rotating wheel 100 has rotated by the same angle in the opposite direction relative to the pivot member. When the first rotating wheel 100 rotates synchronously with the pivot member and the second rotating wheel 200 is in a fixed position, the first rotating wheel 100 has rotated by the same angle in the same direction as the pivot member. Therefore, the synchronous rotation angle of the pivot member can be calculated based on the transmission ratio between the second rotating wheel 200 and the first rotating wheel 100. This invention utilizes a common angular position detector 400 to detect rotation angles exceeding 360 degrees, eliminating the need to add multiple positioning points to identify the rotation cycle, or to replace it with a more expensive angular position detector 400 that can determine the rotation cycle, thus effectively reducing costs.

[0026] In a preferred embodiment of the present invention, when the first rotating wheel 100 is stationary and the second rotating wheel 200 revolves around the first rotating wheel 100 as the pivot member rotates, the pivot shaft 500 of the pivot member is fixed to the support member, and the pivot member is pivotally connected to the pivot shaft 500 through a fixedly connected bushing 600. Both the first rotating wheel 100 and the second rotating wheel 200 are located inside the pivot member, the first rotating wheel 100 is fixed to the pivot shaft 500, and the second rotating wheel 200 is pivotally connected to the pivot member. When the pivot member rotates, the first rotating wheel 100 and the pivot shaft 500 remain stationary. The bushing 600 rotates synchronously with the pivot member. The second rotating wheel 200 revolves around the first rotating wheel 100 as the pivot member rotates, and also rotates synchronously. By detecting the rotation angle of the second rotating wheel 200 through the angular position detector 400 and calculating the transmission ratio, the opposite rotation angle of the first rotating wheel 100 relative to the pivot member can be determined, thus yielding the rotation angle of the pivot member. Placing both the first rotating wheel 100 and the second rotating wheel 200 within the pivot member saves space within the support member.

[0027] At this time, the drive motor 520 of the pivot member is located inside the pivot member, and the drive wheel 510 driven by the drive motor 520 is fixed on the pivot shaft 500 and remains stationary relative to the pivot shaft 500.

[0028] In other embodiments, when the first rotating wheel 100 rotates synchronously with the pivot member and the second rotating wheel 200 is fixed in position, the pivot member is fixedly connected to the pivot shaft 500. The pivot shaft 500 is rotatably pivotally connected to the bushing 600 fixedly connected to the support member. Both the first rotating wheel 100 and the second rotating wheel 200 are located within the support member. The first rotating wheel 100 is fixed to the pivot shaft 500, and the second rotating wheel 200 is pivotally connected to the support member (not shown). When the pivot member rotates, the pivot shaft 500 rotates synchronously with the first rotating wheel 100, while the bushing 600 remains stationary. The second rotating wheel 200 is also fixed in position, rotating only under the drive of the first rotating wheel 100. The rotation angle of the second rotating wheel 200 is detected by the angular position detector 400, and the synchronous rotation angle of the first rotating wheel 100 and the pivot member can be determined by calculating the transmission ratio. Placing both the first rotating wheel 100 and the second rotating wheel 200 within the support member facilitates the design of a waterproof structure.

[0029] At this time, the drive motor 520 of the pivot member is located inside the support member, and the drive wheel 510 driven by the drive motor 520 is also fixed on the pivot shaft 500 and remains stationary relative to the pivot shaft 500.

[0030] In a preferred embodiment of the present invention, the transmission ratio between the second rotating wheel 200 and the first rotating wheel 100 is greater than 3:2. Thus, when the second rotating wheel 200 rotates 360 degrees, the maximum rotation angle of the pivot member can reach at least 540 degrees, satisfying general large-angle rotation requirements.

[0031] Optionally, the transmission ratio between the second rotating wheel 200 and the first rotating wheel 100 is less than 5:2, to avoid the second rotating wheel 200 having an excessively large radius in order to achieve a larger transmission ratio, thus occupying space inside the stage light.

[0032] In a preferred embodiment of the present invention, when the pivot member rotates from the first extreme position to the second extreme position, the maximum rotation angle range is between 540 degrees and 720 degrees. This conforms to the typical rotation range of components inside a stage light.

[0033] Optionally, when the pivot member rotates from the first limit position to the second limit position, the maximum rotation angle range is 630 degrees.

[0034] In a preferred embodiment of the present invention, the first and / or second extreme positions of the pivot member are defined by a limiting member. That is, the rotation range of the pivot member is physically limited to prevent damage to the wiring connecting the pivot member and the support member caused by the pivot member rotating beyond its range.

[0035] Optionally, the limiting member may consist of a limiting post disposed on the pivot member, a limiting post fixed to the pivot shaft 500, and a lever sleeved on the pivot shaft 500. This is a commonly used limiting structure for current stage lights and will not be described in detail here.

[0036] In a preferred embodiment of the present invention, the second rotating wheel 200 is indirectly engaged with the first rotating wheel 100. Since the transmission ratio between the second rotating wheel 200 and the first rotating wheel 100 is greater than 1:1, the radius of the second rotating wheel 200 is generally larger than that of the first rotating wheel 100. By providing a transmission component between the second rotating wheel 200 and the first rotating wheel 100 to allow indirect engagement, the second rotating wheel 200 can be installed at a greater distance from the first rotating wheel 100, allowing for the search of suitable installation locations.

[0037] In a preferred embodiment of the present invention, the second rotating wheel 200 and the first rotating wheel 100 are driven by a synchronous belt 300. The synchronous belt 300 transmission saves more space, and since the transmission force between the second rotating wheel 200 and the first rotating wheel 100 is small, it is only necessary to drive the second rotating wheel 200 to rotate, and the synchronous belt 300 will not be stretched to the point of deformation, resulting in small transmission error.

[0038] In a preferred embodiment of the present invention, the first rotating wheel 100 has a wire-passing hole 110 at its center. The wire connecting the pivot member and the support member can pass through the wire-passing hole 110, thus realizing the wire-passing function of a single pivot shaft 500. Especially when the pivot member has only one pivot shaft 500, it needs to both support the pivot member and realize the wire-passing function. By providing a wire-passing hole 110 at the center of the first rotating wheel 100, the wire-passing function of a single pivot shaft 500 is realized.

[0039] In a preferred embodiment of the present invention, the angular position detector 400 includes a magnet 410 attached to the center of the second rotating wheel 200, and a magnetic encoder 420 stationary relative to the second rotating wheel 200, the magnetic encoder 420 being disposed opposite to the magnet 410. The cooperation between the magnetic encoder 420 and the magnet 410 provides higher accuracy than a typical angular position detector 400, and is less susceptible to interference from stage lighting, exhibiting strong stability.

[0040] Optionally, the magnet 410 is fixed to the second rotating wheel 200 by a mounting bracket for easy installation.

[0041] In a preferred embodiment of the present invention, the pivot member contains a light-emitting element. The light emitted by the light-emitting element forms light spots after being projected, producing various stage effects.

[0042] In a preferred embodiment of the present invention, the support member is the stage lamp housing 900, and the pivot member is the stage lamp support arm 800 and lamp head 700, with the lamp head 700 pivotally connected to the support arm 800. Since the support arm 800 has a large rotation range, generally exceeding 540 degrees, the angular position detector 400 can ultimately detect the rotation angle of the support arm 800.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A stage light with a large-angle rotation detection function, comprising a support member, a pivot member pivotally connected to the support member, a first rotating wheel (100) and a second rotating wheel (200) meshing and transmitting power, wherein the center line of the first rotating wheel (100) coincides with the rotation center line of the pivot member, and further comprising an angular position detector (400) for detecting the rotation angle of the second rotating wheel (200), wherein the first rotating wheel (100) is stationary, the second rotating wheel (200) revolves around the first rotating wheel (100) as the pivot member rotates, or the first rotating wheel (100) rotates synchronously with the pivot member, and the position of the second rotating wheel (200) is fixed, characterized in that, The transmission ratio between the second rotating wheel (200) and the first rotating wheel (100) is greater than 1:

1. When the pivot member rotates more than 360 degrees from the first limit position to the second limit position, the rotation angle of the second rotating wheel (200) is less than 360 degrees. When the first rotating wheel (100) is stationary, and the second rotating wheel (200) revolves around the first rotating wheel (100) as the pivot member rotates, the pivot shaft (500) of the pivot member is fixed to the support member, and the pivot member is pivotally connected to the pivot shaft (500) through a fixedly connected bushing (600). The first rotating wheel (100) and the second rotating wheel (200) are both located inside the pivot member. The first rotating wheel (100) is fixed to the pivot shaft (500), and the second rotating wheel (200) is pivotally connected to the pivot member. When the first rotating wheel (100) rotates synchronously with the pivot member and the second rotating wheel (200) is in a fixed position, the pivot member is fixedly connected to the pivot shaft (500), and the pivot shaft (500) is rotatably pivotally connected to the bushing (600) fixedly connected to the support member. Both the first rotating wheel (100) and the second rotating wheel (200) are located inside the support member. The first rotating wheel (100) is fixed to the pivot shaft (500), and the second rotating wheel (200) is pivotally connected to the support member. The second rotating wheel (200) is indirectly engaged with the first rotating wheel (100).

2. The stage lamp with large-angle rotation detection function according to claim 1, characterized in that, The transmission ratio between the second rotating wheel (200) and the first rotating wheel (100) is greater than 3:

2.

3. The stage light with large-angle rotation detection function according to claim 1, characterized in that, When the pivot member rotates from the first limit position to the second limit position, the maximum rotation angle range is between 540 degrees and 720 degrees.

4. The stage lamp with large-angle rotation detection function according to claim 1, characterized in that, The first and / or second extreme positions of the pivot member are defined by a limiting member.

5. The stage light with large-angle rotation detection function according to claim 1, characterized in that, The second rotating wheel (200) is driven by the first rotating wheel (100) through a synchronous belt (300).

6. The stage light with large-angle rotation detection function according to claim 1, characterized in that, The first rotating wheel (100) has a wire hole (110) at its center.

7. The stage light with large-angle rotation detection function according to claim 1, characterized in that, The angular position detector (400) includes a magnet (410) attached to the center of the second rotating wheel (200) and a magnetic encoder (420) stationary relative to the second rotating wheel (200), the magnetic encoder (420) being disposed opposite to the magnet (410).

8. The stage lamp with large-angle rotation detection function according to claim 1, characterized in that, The pivot member has a light-emitting element inside.

9. The stage lamp with large-angle rotation detection function according to claim 8, characterized in that, The support member is the housing (900) of the stage lamp, and the pivot member is the support arm (800) and lamp head (700) of the stage lamp, with the lamp head (700) pivotally connected to the support arm (800).

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