Horizontal and vertical rotation brake positioning device for moving head lamp and stage lamp

Abstract

The horizontal and vertical rotating brake positioning device comprises a U-shaped frame, a vertical rotating part and a horizontal rotating part are arranged on the U-shaped frame and connected with a motor assembly and a brake assembly, the brake assembly comprises a stator shell, an opening is formed in the end, facing the motor assembly, of the stator shell, and the vertical rotating part and the horizontal rotating part are arranged on the U-shaped frame. A brake bottom plate is arranged between the open end of the stator shell and the motor assembly, a brake stator is arranged in the stator shell, a brake disc is arranged between the brake stator and the brake bottom plate, and an armature is further arranged between the brake disc and the brake bottom plate; a plurality of elastic pieces are arranged on the periphery of the brake stator, one end of each elastic piece abuts against the stator shell, and the other end of each elastic piece abuts against the brake disc. Friction between the brake assembly and the motor assembly is controlled through electromagnetic force of the brake assembly and the elastic piece, then the motor is controlled to run, and hidden dangers such as abnormal collision caused by quick rotation of a lamp holder load under the action of gravity instantly are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of stage lights, and particularly relates to a horizontal and vertical rotation braking and positioning device for a moving head light and a stage lighting fixture. Background Art

[0002] A moving head light is a high-tech stage lighting device. Through the combination of electronic, mechanical, and optical systems, it can achieve dynamic light and shadow effects and color changes, and is widely used in occasions such as stages and squares. The development of moving head lights has experienced a process from incandescent lamps to fluorescent lamps, and then to modern LED lighting technology. Modern moving head lights usually use rare gas discharge bulbs as light sources, which have high brightness and good color rendering. At the same time, in terms of design, attention is paid to heat dissipation, stability, and precise beam positioning. The technical characteristics of moving head lights include the design of the optical system, which determines the light intensity, uniformity, saturation, and spot size. The mechanical system includes material selection, structural design, and heat dissipation requirements to ensure the stability and durability of the lighting fixture. With the development of technology, moving head lights are moving towards a more intelligent and interactive direction. Integrating sensors and AI algorithms can enable moving head lights to automatically adjust effects according to the environment and audience reactions, while wireless network connections improve the creative freedom and performance flexibility of light shows. In addition, the innovative technologies of moving head lights also include designs that can generate multiple independent color beams, enhancing the visual impact and artistic effect of performances.

[0003] Modern moving head stage lights are provided with horizontal and vertical rotation parts and rotation motors on a U-shaped frame for changing the horizontal and vertical projection directions of the lighting fixture, providing flexible and variable lighting effects for stage performances. However, currently, due to structural assembly errors or positioning precision errors of such stage lights, there are relatively deviations in the projection accuracy of the lighting fixture. Especially for long-distance projection, it is difficult to achieve uniform projection angles, affecting the stage performance effect. In addition, when the lighting fixture is projected at a fixed point, the holding torque of the stepper motor is too long, and the continuous heating of the motor affects the service life of the motor. When the lighting fixture is powered off, the torque of the rotation motor is instantaneously released, and the load of the lamp head part drives the rotation part to rotate under the influence of gravity, and the rotation part of the motor cannot prevent its rotation, which is not conducive to the stable control of the load of the lamp head part and causes potential hazards such as abnormal collisions.

[0004] Chinese Patent No. CN208204647U discloses a high-brightness non-polar rotation LED stage light, which reduces the overall volume of the device by hiding all drive motors inside a non-polar rotation bracket, and does not involve the problem of abnormal collisions caused by the rotation of the lighting fixture under the influence of gravity after power-off. Summary of the Invention

[0005] In view of the problems in the related art, the utility model provides a horizontal and vertical rotation braking and positioning device for a moving head light and a stage lighting fixture. By arranging a braking component on the motor assembly and controlling the friction between the braking component and the motor assembly by using electromagnetic force and an elastic component, the operation of the motor is controlled, so as to avoid potential hazards such as abnormal collisions caused by the rapid rotation of the lamp head load under the action of gravity instantaneously.

[0006] The utility model is realized as follows:

[0007] A horizontal and vertical rotation braking and positioning device for a moving head light includes a U-shaped frame. Symmetric vertical rotation parts are respectively arranged on both sides of the U-shaped frame, and a horizontal rotation part is further arranged at the bottom of the U-shaped frame. One of the vertical rotation parts is connected with a vertical motor group, and the horizontal rotation part is connected with a horizontal motor group. Both the horizontal motor group and the vertical motor group are internally provided with a motor assembly and a braking component. The motor assembly includes a motor shaft. A pulley is arranged at one end of the motor shaft, and a belt is wound around the pulley and is connected with the horizontal rotation part or the vertical rotation part through the belt.

[0008] The other end of the motor shaft is provided with a braking component. The braking component includes a stator housing. One end of the stator housing facing the motor assembly has an opening, and a braking bottom plate is arranged between the opening end and the motor assembly. The stator housing is connected with the motor assembly through the braking bottom plate. A braking stator is arranged inside the stator housing. A braking disc is arranged between the braking stator and the braking bottom plate, and an armature is further arranged between the braking disc and the braking bottom plate. A plurality of elastic components are arranged on the periphery of the braking stator. One end of the elastic component abuts against the stator housing, and the other end abuts against the braking disc.

[0009] Preferably, a spline sleeve is arranged at one end of the motor shaft close to the braking component, and the armature is sleeved outside the spline sleeve and is adapted to the spline sleeve.

[0010] Specifically, the motor shaft passes through the spline sleeve. The middle part of the armature is a hollow structure adapted to the spline sleeve. Under the action of the electromagnetic force of the braking stator, the armature is attracted to approach the braking stator.

[0011] Preferably, a ring groove is arranged inside the stator housing, and the braking stator is located in the ring groove. A plurality of elastic grooves communicated with the ring groove are arranged on the circumferential side of the ring groove, and the elastic components are located in the elastic grooves.

[0012] Specifically, arranging the ring groove can fix the braking stator in the stator housing. The elastic component can be a spring. The elastic component is arranged in the elastic groove to ensure that one end of the elastic component abuts against the stator housing.

[0013] Preferably, an annular bearing platform is formed between the outer side of the annular groove and the open end of the stator housing. The brake disc is located within the annular bearing platform and is adapted to the size of the annular bearing platform.

[0014] Specifically, the brake disc is arranged within the annular bearing platform so that the other end of the elastic member can abut against the disc surface of the brake disc, and the movement of the brake disc is controlled by the elastic force of the elastic member and the pressure exerted on the brake disc by the armature when attracting the armature.

[0015] Preferably, the motor shaft sequentially passes through the middle parts of the brake base plate, the armature, and the brake disc, and extends to the middle part of the brake stator.

[0016] Specifically, the brake base plate, the armature, the brake disc, and the brake stator are all of hollow structures.

[0017] Preferably, at the end of the motor shaft near the brake assembly, a magnetic encoding induction magnet is provided inside; on the side of the stator housing away from the motor assembly, a magnetic encoding induction plate is provided.

[0018] Specifically, the magnetic encoding induction magnet and the magnetic encoding induction plate facilitate the measurement of position and displacement.

[0019] Preferably, the brake stator is also connected with a lead wire. The lead wire passes through the stator housing and extends to the outside of the stator housing. A protective coil is also provided at the place where the lead wire passes through the side wall of the stator housing.

[0020] Specifically, the brake stator can be controlled separately through the lead wire, and the electromagnetic force can be controlled, and thereby the movement of the armature can be operated. The brake assembly controls the operation of the motor by means of friction.

[0021] Preferably, the motor assembly is a stepper motor assembly, including a motor stator and a motor rotor. The motor stator surrounds the circumference of the motor rotor, and the motor shaft passes through the center of the motor rotor.

[0022] Specifically, a front end cover is provided on the side of the electronic stator close to the belt pulley, and a rear end cover is provided on the side of the motor stator away from the belt pulley. The front end cover and the rear end cover are respectively joined to the opposite two sides of the motor stator.

[0023] Preferably, bearings are respectively provided at the upper and lower ends of the motor rotor, and the bearings are sleeved on the motor shaft.

[0024] Specifically, bearing washers are respectively provided on the side of the bearings close to the electronic rotor, and wave washers are provided on the side of the bearings away from the motor rotor. A bearing washer is also provided at the position close to the spline sleeve between the spline sleeve and the bearing.

[0025] The stage lighting fixture applies the horizontal and vertical rotation braking and positioning device for the moving head lamp described in any one of the above, and further includes a base and a lamp head. The lamp head is arranged on a U-shaped frame and is connected to the vertical rotation parts on both sides thereof; the bottom of the U-shaped frame is arranged on the base and is connected to the base through a horizontal rotation part.

[0026] Specifically, the longitudinal rotation of the lamp head can be controlled by two vertical rotation parts, and the horizontal rotation of the lamp head can be controlled by the horizontal rotation part. The two cooperate with each other to change the projection orientation and angle of the lamp head.

[0027] Compared with the prior art, the present utility model has the following beneficial effects:

[0028] The present utility model provides a horizontal and vertical rotation braking and positioning device for a moving head lamp and a stage lighting fixture, including a vertical rotation part and a horizontal rotation part. Both the vertical rotation part and the horizontal rotation part are connected with a motor assembly and a braking assembly. The braking assembly is provided with a braking stator, an armature, a brake disc elastic part and a brake base plate. The braking stator generates electromagnetic force to attract the armature, and the movement of the brake disc is pushed through the armature, and the spline sleeve is disengaged from the armature; when the electromagnetic force disappears, the elastic force of the elastic part is used to push the brake disc and the armature to move reversely and reset, so as to control the braking and friction with the motor assembly. Under the action of the frictional torque, the motor stops running, ensuring the stability of the load of the lamp head part and avoiding potential hazards such as abnormal collisions caused by the rapid rotation of the load under the action of gravity instantaneously. Description of the Drawings

[0029] Figure 1 is one of the product schematic diagrams of the stage lighting fixture in the embodiment of the present utility model;

[0030] Figure 2 is the second product schematic diagram of the stage lighting fixture in the embodiment of the present utility model;

[0031] Figure 3 is the structural schematic diagram of the motor assembly and the braking assembly of the horizontal and vertical rotation braking and positioning device for the moving head lamp in the embodiment of the present utility model;

[0032] Figure 4 is the cross-sectional schematic diagram of the motor assembly and the braking assembly of the horizontal and vertical rotation braking and positioning device for the moving head lamp in the embodiment of the present utility model;

[0033] Figure 5 is the exploded schematic diagram of the motor assembly of the horizontal and vertical rotation braking and positioning device for the moving head lamp in the embodiment of the present utility model;

[0034] Figure 6 is the exploded schematic diagram of the braking assembly of the horizontal and vertical rotation braking and positioning device for the moving head lamp in the embodiment of the present utility model;

[0035] Figure 7 This is a schematic structural diagram of the stator housing of the horizontal and vertical rotation braking and positioning device for a moving headlight in an embodiment of the present utility model.

[0036] Reference numerals:

[0037] 101, U-shaped frame; 102, vertical rotation part; 103, horizontal rotation part; 104, vertical motor group; 105, horizontal motor group; 106, lamp head; 107, base; 108, belt

[0038] 201, motor assembly; 202, motor shaft; 203, motor stator; 204, motor rotor; 205, front end cover; 206, rear end cover; 207, bearing; 208, bearing washer; 209, wave washer; 210, pulley

[0039] 301, brake assembly; 302, stator housing; 303, brake base plate; 304, brake stator; 305, brake disc; 306, armature; 307, elastic member; 308, spline sleeve; 309, magnetic encoding induction magnet; 310, magnetic encoding induction plate; 311, lead wire; 312, coil protection

[0040] 401, annular groove; 402, elastic groove; 403, annular bearing platform Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0042] Embodiment

[0043] As Figures 1 to 7 , a horizontal and vertical rotation braking and positioning device for a moving headlight includes a U-shaped frame 101. Symmetrically arranged vertical rotation parts 102 are respectively provided on both sides of the U-shaped frame 101, and a horizontal rotation part 103 is further provided at the bottom of the U-shaped frame 101. One of the vertical rotation parts 102 is connected to a vertical motor group 104, and the horizontal rotation part 103 is connected to a horizontal motor group 105. Both the horizontal motor group 105 and the vertical motor group 104 are provided with a motor assembly 201 and a brake assembly 301. The motor assembly 201 includes a motor shaft 202. A pulley 210 is provided at one end of the motor shaft 202, and a belt 108 is wound around the pulley 210 and is connected to the horizontal rotation part 103 or the vertical rotation part 102 through the belt 108.

[0044] At the other end of the motor shaft 202, a brake assembly 301 is provided. The brake assembly 301 includes a stator housing 302. One end of the stator housing 302 facing the motor assembly 201 has an opening, and a brake base plate 303 is provided between the opening end and the motor assembly 201. The stator housing 302 is connected to the motor assembly 201 through the brake base plate 303. A brake stator 304 is provided inside the stator housing 302. A brake disc 305 is provided between the brake stator 304 and the brake base plate 303. An armature 306 is also provided between the brake disc 305 and the brake base plate 303. A plurality of elastic members 307 are provided around the brake stator 304. One end of the elastic member 307 abuts against the stator housing 302, and the other end abuts against the brake disc 305.

[0045] A spline sleeve 308 is provided at one end of the motor shaft 202 close to the brake assembly 301. The armature 306 is sleeved outside the spline sleeve 308 and is adapted to the spline sleeve 308.

[0046] The motor shaft 202 passes through the spline sleeve 308. The middle part of the armature 306 is a hollow structure adapted to the spline sleeve 308. Under the electromagnetic force of the brake stator 304, the armature 306 is attracted to approach the brake stator 304.

[0047] An annular groove 401 is provided inside the stator housing 302. The brake stator 304 is located in the annular groove 401. A plurality of elastic grooves 402 communicating with the annular groove 401 are provided on the circumferential side of the annular groove 401. The elastic members 307 are located in the elastic grooves 402.

[0048] Setting the annular groove 401 can fix the brake stator 304 inside the stator housing 302. The elastic member 307 can be a spring. The elastic member 307 is arranged in the elastic groove 402 to ensure that one end of the elastic member 307 abuts against the stator housing 302.

[0049] Between the outside of the annular groove 401 and the opening end of the stator housing 302, an annular bearing platform 403 is formed. The brake disc 305 is located in the annular bearing platform 403 and is adapted to the size of the annular bearing platform 403.

[0050] The brake disc 305 is arranged in the annular bearing platform 403 so that the other end of the elastic member 307 can abut against the disc surface of the brake disc 305. By the elastic force of the elastic member 307 and the pressure exerted by the armature 306 on the brake disc 305 when attracting the armature 306, the movement of the brake disc 305 is controlled.

[0051] The motor shaft 202 sequentially passes through the middle parts of the brake base plate 303, the armature 306, and the brake disc 305, and extends to the middle part of the brake stator 304.

[0052] The brake base plate 303, armature 306, brake disc 305 and brake stator 304 are all of hollow structures.

[0053] At the end of the side of the motor shaft 202 close to the brake assembly 301, a magnetic encoding induction magnet 309 is provided inside; on the side of the stator housing 302 away from the motor assembly 201, a magnetic encoding induction plate 310 is provided.

[0054] Through the magnetic encoding induction magnet 309 and the magnetic encoding induction plate 310, it is convenient to measure the position and displacement.

[0055] The brake stator 304 is also connected with a lead wire 311. The lead wire 311 passes through the stator housing 302 and extends to the outside of the stator housing 302. A protective coil 312 is also provided at the place where the lead wire 311 passes through the side wall of the stator housing 302.

[0056] Through the lead wire 311, the brake stator 304 can be controlled independently, and the electromagnetic force can be controlled, and thus the movement of the armature 306 can be operated. The brake assembly 301 controls the operation of the motor by means of friction.

[0057] The motor assembly 201 is a stepping motor assembly 201, which includes a motor stator 203 and a motor rotor 204. The motor stator 203 surrounds the motor rotor 204 on the circumferential side, and the motor shaft 202 passes through the center of the motor rotor 204.

[0058] On the side of the electronic stator close to the belt pulley 210, a front end cover 205 is provided. On the side of the motor stator 203 away from the belt pulley 210, a rear end cover 206 is provided. The front end cover 205 and the rear end cover 206 are respectively connected to the opposite two sides of the motor stator 203.

[0059] Bearings 207 are respectively provided at the upper and lower ends of the motor rotor 204, and the bearings 207 are sleeved on the motor shaft 202.

[0060] Bearing washers 208 are respectively provided on the side of the bearings 207 close to the electronic rotor, and wave washers 209 are also provided on the side of the bearings 207 away from the motor rotor 204. Between the spline sleeve 308 and the bearings 207, bearing washers 208 are also provided at the position close to the spline sleeve 308.

[0061] This embodiment also provides a stage lamp, which applies the horizontal and vertical rotation brake positioning device for a moving head lamp as described above, and further includes a base 107 and a lamp head 106. The lamp head 106 is arranged on the U-shaped frame 101 and is connected to the vertical rotation parts 102 on both sides thereof; the bottom of the U-shaped frame 101 is arranged on the base 107 and is connected to the base 107 through the horizontal rotation part 103.

[0062] The longitudinal rotation of the lamp head 106 can be controlled by two vertical rotation parts 102, and the horizontal rotation of the lamp head 106 can be controlled by the horizontal rotation part 103. The two cooperate with each other to change the projection orientation and angle of the lamp head 106.

[0063] The present utility model provides a horizontal and vertical rotation braking and positioning device for a moving head lamp and a stage lamp. Its working principle is that when the power is turned on, the braking stator 304 works to generate electromagnetic force. Under the action of the electromagnetic force, the armature 306 is attracted and the spring is compressed. The brake disc 305 moves with the armature 306, and the armature 306 and the spline sleeve 308 are disengaged, and the motor starts to operate. The lamp head 106 can input specific pulse signals to the motor through the MCU control motor drive chip to accurately control the rotation angle and speed of the motor; when the power supply of the braking stator 304 is cut off, the braking stator 304 stops generating electromagnetic force, and the elastic member 307 pushes the armature 306 to reset. The inner polygon hole of the armature 306 is correspondingly sleeved on the spline sleeve 308. At the same time, the brake disc 305 presses the armature 306 and the spline sleeve 308. Under the action of the frictional torque between the brake disc 305, the armature 306 and the spline sleeve 308, the motor stops operating, ensuring that the motor can stay in the required position when it stops operating, avoiding the overlong holding torque of the stepping motor and continuous heating affecting the service life, and also avoiding potential hazards such as abnormal collisions caused by the rapid rotation of the lamp head 106 load under the action of gravity instantaneously.

[0064] According to the disclosure and teaching of the above specification, those skilled in the art of the present utility model can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. A horizontal and vertical rotation brake positioning device for a moving head light, comprising a U-shaped frame, wherein both sides of the U-shaped frame are respectively provided with mutually symmetrical vertical rotation parts, and the bottom of the U-shaped frame is also provided with a horizontal rotation part; the vertical rotation part on one side is connected to a vertical motor group, and the horizontal rotation part is connected to a horizontal motor group; both the horizontal motor group and the vertical motor group are provided with a motor assembly and a brake assembly; the motor assembly comprises a motor shaft, one end of the motor shaft is provided with a pulley, a belt is wound around the pulley, and the pulley is connected to the horizontal rotation part or the vertical rotation part through the belt; it is characterized in that, A brake assembly is provided at the other end of the motor shaft, and the brake assembly includes a stator housing. The stator housing has an opening at one end facing the motor assembly, a brake base plate is provided between the open end and the motor assembly, and the stator housing is connected to the motor assembly through the brake base plate; a brake stator is provided in the stator housing, a brake disc is provided between the brake stator and the brake base plate, and an armature is also provided between the brake disc and the brake base plate; a plurality of elastic parts are provided on the periphery of the brake stator, one end of the elastic part abuts against the stator housing, and the other end abuts against the brake disc.

2. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: A spline sleeve is provided at one end of the motor shaft close to the brake assembly, and the armature sleeve is connected to the outer side of the spline sleeve and is adapted to the spline sleeve.

3. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: An annular groove is arranged inside the stator housing, and the brake stator is located in the annular groove; a plurality of elastic grooves communicating with the annular groove are arranged on the circumference of the annular groove, and the elastic member is located in the elastic grooves.

4. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 3, characterized in that: An annular support platform is formed between the outer side of the annular groove and the open end of the stator housing. The brake disc is located in the annular support platform and is adapted to the size of the annular support platform.

5. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: The motor shaft passes through the brake base plate, the armature, and the middle part of the brake disc in sequence, and extends to the middle part of the brake stator.

6. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: A magnetic coding induction magnet is arranged at the end of the motor shaft on the side close to the brake assembly; a magnetic coding induction plate is arranged at the side of the stator housing away from the motor assembly.

7. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: The brake stator is also connected with a lead wire, which passes through the stator shell and extends to the outside of the stator shell. A protective coil is also provided at the side wall where the lead wire passes through the stator shell.

8. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 1, characterized in that: The motor assembly is a stepper motor assembly, comprising a motor stator and a motor rotor, wherein the motor stator surrounds the circumference of the motor rotor, and the motor shaft passes through the center of the motor rotor.

9. The horizontal and vertical rotation brake positioning device for a moving head light according to claim 8, characterized in that: The upper and lower ends of the motor rotor are respectively provided with bearings, and the bearings are sleeved on the motor shaft.

10. A stage lighting fixture, using the horizontal and vertical rotation brake positioning device for a moving head light as claimed in any one of claims 1 to 9, characterized in that: It also includes a base and a lamp head, wherein the lamp head is arranged on the U-shaped frame and connected to the vertical rotating parts on both sides thereof; the bottom of the U-shaped frame is arranged on the base and connected to the base through the horizontal rotating part.

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