A stage lamp with high-precision rotary positioning

Abstract

The application discloses a stage lamp with high-precision rotary positioning, which comprises a pivot joint and a supporting part, the pivot joint is pivoted to the supporting part and comprises at least one light source for generating light effect, the pivot joint is driven to rotate by a flat motor, the flat motor comprises a stator for generating a magnetic field by electrification, a rotor which is sleeved outside the stator and is driven by the magnetic field, the pivot joint is fixedly connected with the rotor, the supporting part is fixedly connected with the stator, or the pivot joint is fixedly connected with the stator, and the supporting part is fixedly connected with the rotor. Since the rotor is sleeved outside the stator, the end surface area is larger than that of the rotating shaft of the traditional rotating shaft motor, and the rotor will not shake easily. Moreover, the transmission assembly is cancelled, transmission errors are avoided, and positioning is more accurate. In addition, the stator or the rotor is directly connected with the pivot joint, and can serve as a pivot shaft, and there is no need to additionally set a space for installing the motor. Furthermore, the rotor is sleeved outside the stator, and compared with the traditional rotating shaft motor, the rotating shaft is cancelled, so that the height of the motor is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stage lights, and more particularly to a stage light with high-precision rotational positioning. Background Art

[0002] Stage lights, as essential equipment for creating an atmosphere, are widely used in various venues. Since the projection distance of stage lights is generally 30m-50m during operation, the rotational drive precision of the stage light head or arm is very high. A slight deviation in the rotation angle will cause the final projected light spot to shift further. Currently, the drive of stage light heads or arms is usually driven by a motor connected to a belt, or by meshing gears. However, due to gaps between the belt and gears, or between gears, and the possibility of tooth skipping between the belt and gears, the rotational positioning of the lamp head or arm may be inaccurate, and it may not be positioned to the ideal position. Summary of the Invention

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, the present invention provides a stage light with high-precision rotation positioning, which directly connects the pivot member to the stator or rotor of the flat motor, eliminating the transmission component and avoiding precision errors in the transmission process.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a stage light with high-precision rotational positioning, including a pivot member and a support member, the pivot member is pivotally connected to the support member and includes at least one light source for generating a light effect, the pivot member is driven to rotate by a flat motor, the flat motor includes a stator that generates a magnetic field when energized, and a rotor that is sleeved outside the stator and driven by the magnetic field, the pivot member is fixedly connected to the rotor, and the support member is fixedly connected to the stator, or the pivot member is fixedly connected to the stator, and the support member is fixedly connected to the rotor.

[0005] The high-precision rotational positioning stage light utilizes the alternating magnetic field on the stator to drive the rotor. Because the rotor is mounted outside the stator, its end surface area is larger than that of a conventional rotary shaft motor, making it easier to secure to the pivot or support member, preventing loose motion and improving stability. Furthermore, by eliminating the transmission assembly, transmission errors caused by mechanical transmission errors due to precision issues are avoided, allowing for more accurate positioning of the pivot, and preventing light spot deviation even at long distances. Furthermore, by directly connecting the stator or rotor to the pivot, the stator or rotor can serve as the pivot axis of the pivot, eliminating the need for additional space for mounting the motor and resolving the previous issue of thicker chassis or support arms due to the presence of the motor. Furthermore, by mounting the rotor outside the stator, the rotor eliminates the need for a rotating shaft compared to conventional rotary shaft motors, reducing the motor's height and facilitating installation in spaces with limited height.

[0006] Furthermore, the stator includes a core and a winding coil wound around the core, and the rotor includes a ring and a permanent magnet mounted on the ring. The stator generates a continuously changing magnetic field by changing the direction of the current flowing through the winding coil, thereby driving the rotor, which is equipped with the permanent magnet, to rotate. This principle is similar to that of a conventional stepper motor.

[0007] Furthermore, the end of the stator has an enlarged portion to prevent the rotor from falling off. The stator uses the enlarged portion to limit the rotor to prevent the rotor from sliding freely on the stator.

[0008] Furthermore, an end cap is provided at the end of the stator to prevent the rotor from falling off. After the rotor is sleeved on the stator, the end cap is connected to the stator to limit the rotor and prevent the rotor from sliding freely on the stator.

[0009] Furthermore, the stator and the rotor are connected via a bearing, which ensures that the rotation of the rotor and the stator do not affect each other, and the rotation is smoother.

[0010] Furthermore, the rotor has a protrusion on its inner side, and two bearings are located at the upper and lower ends of the protrusion, with the outer rings of the bearings abutting against the protrusions. The protrusions support the outer rings of the bearings. Providing two bearings reduces the size of a single bearing and offsets machining errors between the two bearings, thereby reducing the risk of the rotor shaking when secured to the stator.

[0011] Further, the stator is provided with a through hole penetrating the rotation center of the pivot. The cable transmitting signals and power between the pivot and the support can pass through the through hole, facilitating wiring.

[0012] Further, the pivot is a lamp head of the stage lamp, and the support is a support arm of the stage lamp. That is, the lamp head is driven to rotate relative to the support arm by the flat motor.

[0013] Further, the pivot is pivoted on both sides and driven by one flat motor. Two flat motors are synchronously driven to rotate the pivot, and the power requirement of each flat motor is lower, and the volume of the flat motor can be smaller.

[0014] Further, the pivot is a lamp head and a support arm of the stage lamp, and the support is a machine box of the stage lamp. That is, the support arm is driven to rotate relative to the machine box by the flat motor.

[0015] Further, the pivot is provided with at least one of a light beam cutting component, a pattern shaping component, a color rendering component, a focusing lens component, a light splitting component, a fogging component, and a magnifying lens component. The cutting of the light beam periphery, the shaping of the light beam pattern, the rendering of the light beam color, the adjustment of the light beam focus, the fission of the light beam, the light beam homogenization, and the spot magnification effect are respectively realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an exploded structural schematic diagram of the stage lamp of the present application.

[0017] Figure 2 is a sectional structural schematic diagram of the stage lamp of the present application.

[0018] Figure 3 is a longitudinal sectional structural schematic diagram of the flat motor of the stage lamp of the present application.

[0019] Figure 4 is a transverse sectional structural schematic diagram of the flat motor of the stage lamp of the present application.

[0020] In the drawings:

[0021] 100, lamp head; 110, light source; 200, support arm; 300, machine box; 400, stator; 410, core column; 411, bulge; 412, end cover; 413, through hole; 414, notch; 420, winding group; 500, rotor; 510, ring body; 511, protruding part; 520, permanent magnet; 600, bearing. DETAILED DESCRIPTION

[0022] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] like Figures 1 to 2 The present invention provides a stage light with high-precision rotational positioning, including a pivot member and a support member. The pivot member is pivotally connected to the support member and includes at least one light source 110 for generating a light effect. The pivot member is driven to rotate by a flat motor. The flat motor includes a stator 400 that generates a magnetic field when energized, and a rotor 500 that is sleeved outside the stator 400 and driven by the magnetic field. The pivot member is fixedly connected to the rotor 500, and the support member is fixedly connected to the stator 400, or the pivot member is fixedly connected to the stator 400, and the support member is fixedly connected to the rotor 500.

[0024] The high-precision rotational positioning stage light utilizes the alternating magnetic field of the stator 400 to drive the rotor 500. Because the rotor 500 is mounted outside the stator 400, its end surface area is larger than the shaft of a conventional rotary motor, making it easier to secure to the pivot or support member, preventing loose motion and improving stability. Furthermore, by eliminating the transmission component, transmission errors caused by mechanical transmission errors due to precision issues are avoided, resulting in more accurate positioning of the pivot member and preventing light spot deviation even at long distances. Furthermore, by directly connecting the stator 400 or the rotor 500 to the pivot, the stator 400 or the rotor 500 can serve as the pivot axis of the pivot, eliminating the need for additional space for the motor. This solves the problem of thicker chassis 300 or support arm 200 designs previously required due to the presence of the motor. Furthermore, by mounting the rotor 500 outside the stator 400, the rotor is eliminated compared to conventional rotary motors, reducing the motor's height and facilitating installation in height-constrained spaces.

[0025] When the pivot member is fixedly connected to the stator 400 and the support member is fixedly connected to the rotor 500 , if the rotor 500 and the support member are kept relatively fixed, the stator 400 will drive the pivot member to rotate due to the interaction of forces.

[0026] like Figures 1 to 4In a preferred embodiment of the present invention, the stator 400 includes a core 410 and a winding group 420 wound around the core 410, and the rotor 500 includes a ring body 510 and a permanent magnet 520 disposed on the ring body 510. The stator 400 generates a magnetic field with a continuously changing direction by changing the direction of the current in the winding group 420, thereby driving the rotor 500 equipped with the permanent magnet 520 to rotate. The principle is similar to that of a general stepper motor. The winding group 420 forms a plurality of coils opposite to the permanent magnet 520. The permanent magnet 520 is arranged horizontally, opposite the polarity of the coils.

[0027] In a preferred embodiment of the present invention, the end of the stator 400 has an enlarged portion 411 to prevent the rotor 500 from falling off. The stator 400 uses the enlarged portion 411 to limit the rotor 500 to prevent the rotor 500 from sliding freely on the stator 400.

[0028] In a preferred embodiment of the present invention, an end cap 412 is provided at the end of the stator 400 to prevent the rotor 500 from falling off. After the rotor 500 is fitted onto the stator 400, the end cap 412 is connected to the stator 400 to limit the position of the rotor 500 and prevent it from sliding freely on the stator 400. The enlarged portion 411 is also used for fixing and is connected to the pivot member or the support member via screws passing through the enlarged portion 411.

[0029] In this embodiment, the expanded portion 411 is provided at one end of the stator 400 and the end cover 412 is provided at the other end.

[0030] In a preferred embodiment of the present invention, the stator 400 and the rotor 500 are connected via a bearing 600. The bearing 600 prevents the rotor 500 from rotating and the stator 400 from interfering with each other, resulting in smoother rotation.

[0031] In this embodiment, two ends of the inner ring of the bearing 600 respectively abut against the enlarged portion 411 and a convex ring provided on the rotor 500. Optionally, the convex ring is provided in contact with the enlarged portion 411.

[0032] In a preferred embodiment of the present invention, the rotor 500 has a protrusion 511 on its inner side. Two bearings 600 are located at the upper and lower ends of the protrusion 511, with the outer rings of the bearings 600 abutting against the protrusion 511. The protrusions 511 support the outer rings of the bearings 600. Providing two bearings 600 reduces the volume of a single bearing 600 and offsets machining errors between the two bearings 600, thereby reducing the risk of shaking when the rotor 500 is secured to the stator 400.

[0033] In a preferred embodiment of the present invention, the stator 400 is provided with a through hole 413 along the rotation center of the pivot member. Cables transmitting signals and power between the pivot member and the support member can pass through the through hole 413 to facilitate wiring.

[0034] At this time, the end of the expanded portion 411 provided at the end of the stator 400 to prevent the rotor 500 from falling off has a notch 414 for wire outlet.

[0035] Optionally, the end cover 412 is provided with a through hole corresponding to the through hole 413 for passing a wire.

[0036] Optionally, a side wall of one end of the through hole away from the stator 400 is arc-shaped to avoid friction and cutting of the cable.

[0037] In a preferred embodiment of the present invention, the pivotal member is a stage light's lamp head 100, and the supporting member is a stage light's support arm 200. Specifically, the lamp head 100 is driven by the flat motor to rotate relative to the support arm 200. In this case, the pivotal member is fixedly connected to the stator 400, and the supporting member is fixedly connected to the rotor 500.

[0038] In a preferred embodiment of the present invention, both sides of the pivot member are pivotally connected and each is driven by a flat motor. The two flat motors work synchronously to drive the pivot member to rotate, which requires less power for each flat motor and can also reduce the size of the flat motor.

[0039] In a preferred embodiment of the present invention, the pivotal member comprises the stage light head 100 and the support arm 200, and the support member comprises the stage light chassis 300. Specifically, the support arm 200 is driven by the flat motor to rotate relative to the chassis 300. In this case, the pivotal member is fixedly connected to the rotor 500, and the support member is fixedly connected to the stator 400.

[0040] Generally speaking, the lamp head 100 of a stage light is pivotally connected to the support arm 200 and rotates around a first dimension, and the support arm 200 is pivotally connected to the chassis 300 and rotates around a second dimension, and the two together realize the universal rotation of the lamp head 100.

[0041] In a preferred embodiment of the present invention, the pivoting member comprises at least one of a beam cutting assembly, a pattern shaping assembly, a color rendering assembly, a focusing lens assembly, a beam splitting assembly, an atomizing assembly, and a magnifying lens assembly, respectively achieving the effects of beam cutting, beam pattern shaping, beam color rendering, beam focus adjustment, beam fission, beam uniformity, and light spot magnification.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A high-precision rotation positioning stage light, characterized in that: The invention comprises a pivotal member and a support member, wherein the pivotal member is pivotally connected to the support member and comprises at least one light source (110) for generating a light effect, wherein the pivotal member is driven to rotate by a flat motor, wherein the flat motor comprises a stator (400) for generating a magnetic field when energized, and a rotor (500) sleeved outside the stator (400) and driven by the magnetic field, wherein the stator (400) comprises a core column (410) and a winding group (420) wound around the core column (410), and wherein the rotor (500) comprises a ring body (510) and a winding group (420) arranged on the core column (410). The permanent magnet (520) on the ring body (510) is connected to the stator (400) and the rotor (500) via bearings (600). The number of the bearings (600) is two, and they are respectively located at two ends of the winding group (420) and the permanent magnet (520). The pivotal member is fixedly connected to the rotor (500), and the support member is fixedly connected to the stator (400), or the pivotal member is fixedly connected to the stator (400), and the support member is fixedly connected to the rotor (500).

2. The high-precision rotation positioning stage light according to claim 1, characterized in that: An end portion of the stator (400) has an enlarged portion (411) for preventing the rotor (500) from falling off.

3. The high-precision rotation positioning stage light according to claim 1, characterized in that: An end cover (412) is provided at the end of the stator (400) to prevent the rotor (500) from falling off.

4. The high-precision rotation positioning stage light according to claim 1, characterized in that: The inner side of the rotor (500) has a protruding portion (511), the bearing (600) is respectively located at the upper and lower ends of the protruding portion (511), and the outer ring of the bearing (600) abuts against the protruding portion (511).

5. The high-precision rotation positioning stage light according to claim 1, characterized in that: The stator (400) is provided with a through hole (413) along the rotation center of the pivot member.

6. The high-precision rotation positioning stage light according to claim 1, characterized in that: The pivoting member is a lamp head (100) of a stage light, and the supporting member is a supporting arm (200) of the stage light.

7. The high-precision rotation positioning stage light according to claim 6, characterized in that: Both sides of the pivotal member are pivotally connected and each is driven by one of the flat motors.

8. The high-precision rotation positioning stage light according to claim 1, characterized in that: The pivotal parts are a stage light head (100) and a support arm (200), and the support part is a stage light chassis (300).

9. The high-precision rotation positioning stage light according to claim 1, characterized in that: The pivoting member contains at least one of a beam cutting component, a pattern shaping component, a color rendering component, a focusing lens component, a light splitting component, an atomizing component, and a magnifying lens component.

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