A stage light focusing device

Abstract

A stage light focusing device comprises a focusing lens, a power mechanism, a transmission mechanism, a first mounting plate for fixing the focusing lens, and a second mounting plate for fixing the power mechanism, and is characterized in that it also comprises a positioning sliding assembly, wherein the power mechanism, the transmission mechanism, and the positioning sliding assembly are located on the same side of the focusing lens; the transmission mechanism is fixed on the first mounting plate; the positioning sliding assembly comprises a guide rail and a positioning sliding part movably mounted on the guide rail, the positioning sliding part is fixed on the first mounting plate, and the guide rail is fixed on the second mounting plate.

Description

Technical Field

[0001] The invention relates to the technical field of stage lamps, and in particular to a stage lamp focusing device. Background Art

[0002] Stage lights usually require the focusing lens to be moved up and down. During the movement of the focusing lens, it is necessary to ensure smooth and stable movement to ensure the imaging effect.

[0003] The main problem in the focusing process is the running card. The existing solution generally adopts a double guide rod + motor + belt combination. The two focusing guide rods are used as positioning guide mechanisms and are located on both sides of the focusing lens. Then the motor is used as a power mechanism and the belt is used as a transmission mechanism. For example, the patent document disclosed as CN206593014U - a stage lighting focusing device with switchable light effects, the patent document disclosed as CN201885159U - a stage lighting focusing transmission device, the patent document disclosed as CN102242907B - a focusing and zooming system for stage lighting, the patent document disclosed as CN208886679U - a focusing module device, the patent document disclosed as CN201885159U - a stage lighting focusing transmission device, the patent document disclosed as CN209245959U - a stage lighting The patent documents disclosed herein all adopt a double guide rod + motor + belt combination structure design.

[0004] There is also a focusing structure in the prior art that adopts a combination of double guide rods + motors, but the stroke of the focusing lens in this design is generally very short, such as the patent document with publication number CN206247261U - a stage lighting focusing device and the patent document with publication number CN205383550U - a stage lighting focusing structure.

[0005] The above two existing technical solutions both adopt a double guide rod positioning and guiding design, but in actual problems, the focusing problem is still the main after-sales problem. Although the double guide rods solve the guiding problem, if the double guide rods themselves are not parallel or perpendicular enough, they will become the source of jamming. The factors affecting the parallelism and perpendicularity of the double guide rods include the flatness of the sheet metal fixing the double guide rods, the accuracy of the mounting holes, the pull of gravity during the up and down movement of the focusing lens, and operational problems during the assembly and manufacturing process. Therefore, the double guide rod structure still has some problems that are difficult to solve, and if dual motors are used, the cost will be relatively high. Summary of the invention

[0006] The purpose of the present invention is to provide a stage light focusing device to overcome the problems of focusing structure stagnation and high requirements on parts precision.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A stage light focusing device comprises a focusing lens, a power mechanism, a transmission mechanism, a first mounting plate for fixing the focusing lens, and a second mounting plate for fixing the power mechanism; further comprises a positioning sliding assembly, wherein the power mechanism, the transmission mechanism, and the positioning sliding assembly are located on the same side of the focusing lens; the transmission mechanism is fixed on the first mounting plate; the positioning sliding assembly comprises a guide rail and a positioning sliding part movably mounted on the guide rail, wherein the positioning sliding part is fixed on the first mounting plate, and the guide rail is fixed on the second mounting plate.

[0009] As a preferred implementation, the positioning sliding portion is installed in the middle of one side of the first mounting plate.

[0010] As a preferred implementation, the transmission mechanism is mounted on an edge of one side of the first mounting plate.

[0011] As a preferred embodiment, the positioning sliding part includes a fixed block and a sliding block, one side of the fixed block is fixed to the sliding block, and the other side is installed in the middle of one side of the first mounting plate, and the sliding block can slide freely on the guide rail.

[0012] As a preferred implementation, the first mounting plate is further provided with a notch for avoiding the guide rail.

[0013] As a preferred implementation, the guide rail is a linear guide rail.

[0014] As a preferred implementation, the power mechanism is a screw stepping motor.

[0015] As a preferred implementation, the transmission mechanism is a screw motor slider, and the screw motor slider is provided with a thread matching the motor shaft of the screw stepper motor.

[0016] As a preferred embodiment, the first mounting plate is further provided with a clearance hole for avoiding the motor shaft of the screw motor.

[0017] As a preferred implementation, the screw stepper motor is mounted on the second mounting plate via a motor fixing plate.

[0018] Compared with the prior art, the beneficial effects of this technical solution are:

[0019] 1- The power mechanism, transmission mechanism, and positioning sliding assembly are located on the same side of the focusing lens, and jointly bear the gravity of the focusing lens, so that the tensile deformation of the first mounting plate is much smaller than the force on both ends of the double guide rod + motor + belt combination design;

[0020] 2- The design of the slider and linear guide rail greatly avoids the installation error caused by sheet metal processing errors or human error, thus greatly avoiding the problem of verticality and parallelism deformation of the two guide rods in the double guide rod + motor + belt combination design. ;

[0021] 3- The use of screw stepper motor and screw motor slider allows a single motor to complete the drive without the need for a dual motor + dual belt design, saving costs. At the same time, in terms of stroke, it is far greater than the combination of dual guide rods + motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0023] Figure 1 It is a stereogram of the present invention.

[0024] Figure 2 It is an exploded view of the present invention.

[0025] Figure 3 It is a front view of the present invention.

[0026] Description of the accompanying drawings: 1-focusing lens; 2-first mounting plate; 21-air-avoiding hole 1; 22-air-avoiding hole 2; 3-positioning sliding assembly; 31-guide rail; 32-sliding block; 33-fixing block; 4-power mechanism; 41-motor fixing plate; 5-transmission mechanism; 6-second mounting plate. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] As attached Figure 1-3 As shown, a stage light focusing device includes a focusing lens 1, a power mechanism 4, a transmission mechanism 5, a first mounting plate 2 for fixing the focusing lens 1, and a second mounting plate 6 for fixing the power mechanism 4; it also includes a positioning sliding assembly 3, and the power mechanism 4, the transmission mechanism 5, and the positioning sliding assembly 3 are located on the same side of the focusing lens 1; the transmission mechanism 5 is fixed on the first mounting plate 2; the positioning sliding assembly 3 includes a guide rail 31 and a positioning sliding part movably installed on the guide rail 31, the positioning sliding part is fixed on the first mounting plate 2, and the guide rail is fixed on the second mounting plate 6.

[0031] The beneficial effect of this embodiment is that the gravity of the focusing lens 1 is directly borne by the transmission mechanism 4 and the positioning sliding part fixed on the same side of the first mounting plate 2, and the sliding mode becomes the sliding of the guide rail 31, thereby avoiding the situation in which one fulcrum on each side of the conventional double guide rod mode bears the gravity of the focusing lens 1 and causes deformation of the first mounting plate 2; at the same time, the use of the guide rail 31 also avoids the jamming of the focusing lens 1 due to the verticality and parallelism problems of the double guide rods during operation.

[0032] As a preferred embodiment, the positioning sliding part is installed in the middle of one side of the first mounting plate (2);

[0033] Specifically, the positioning sliding part includes a fixed block 33 and a sliding block 32. One side of the fixed block 33 is fixed to the sliding block 32, and the other side is installed in the middle of one side of the first mounting plate 2. The sliding block 32 can slide freely on the guide rail 31. The beneficial effect of this embodiment is that the positioning sliding part is installed in the middle of a mounting plate 2, which is more conducive to supporting the gravity of the focusing lens 1 and keeping the focusing lens 1 stable during the sliding process of the guide rail 31, thereby reducing shaking.

[0034] Specifically, the transmission mechanism 5 is installed on the edge of one side of the first mounting plate 2. The beneficial effect of this embodiment is that the transmission mechanism 5 and the fixing block 33 are close to each other, which is more conducive to jointly supporting the gravity of the focusing lens 1.

[0035] In addition, the first mounting plate 2 is further provided with a second avoidance hole 22 for avoiding the guide rail 31. The beneficial effect of this embodiment is that the length of the guide rail 31 can be longer, so that the travel of the focusing lens 1 can be longer.

[0036] In addition, the guide rail 31 is a linear guide rail. The beneficial effect of this embodiment is that the linear guide rail is an existing standard part and has higher versatility.

[0037] As a preferred embodiment, the power mechanism 4 is a screw stepper motor. The beneficial effect of this embodiment is that by using a screw stepper motor, the torque of the motor can be maximized, so that the power mechanism 4 only needs to use one motor instead of two motors.

[0038] Specifically, the transmission mechanism 5 is a screw motor slider, and the screw motor slider is provided with a thread matching the motor shaft of the screw stepping motor. The beneficial effect of this embodiment is that the transmission mechanism 5 can be directly fixed on the first mounting plate 2, and can play a transmission role and a supporting role for the focusing lens 1.

[0039] Specifically, the first mounting plate 2 is further provided with a first avoidance hole 21 for avoiding the motor shaft of the screw motor. The beneficial effect of this embodiment is the same as that of the second avoidance hole 22.

[0040] Specifically, the screw stepper motor is mounted on the second mounting plate 6 via the motor fixing plate 41. The beneficial effect of this embodiment is that the screw stepper motor and the guide rail 31 are both fixed on the second mounting plate 6 and are close to each other, which is more conducive to jointly supporting the gravity of the focusing lens 1.

[0041] In the description herein, it should be understood that the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0043] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0044] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A stage light focusing device, comprising a focusing lens, a power mechanism, a transmission mechanism, a first mounting plate for fixing the focusing lens, and a second mounting plate for fixing the power mechanism, characterized in that: It also includes a positioning sliding assembly, wherein the power mechanism, the transmission mechanism, and the positioning sliding assembly are located on the same side of the focusing lens; the transmission mechanism is fixed on the first mounting plate; the positioning sliding assembly includes a guide rail and a positioning sliding part movably mounted on the guide rail, the positioning sliding part is fixed on the first mounting plate, the guide rail is fixed on the second mounting plate, the positioning sliding part is mounted in the middle of one side of the first mounting plate, and the transmission mechanism is mounted on the edge of one side of the first mounting plate.

2. A stage light focusing device according to claim 1, characterized in that: The positioning sliding part includes a fixed block and a sliding block. One side of the fixed block is fixed to the sliding block, and the other side is installed in the middle of one side of the first mounting plate. The sliding block can slide freely on the guide rail.

3. A stage light focusing device according to claim 2, characterized in that: The first mounting plate is also provided with a notch for avoiding the guide rail.

4. A stage light focusing device according to claim 2, characterized in that: The guide rail is a linear guide rail.

5. A stage light focusing device according to claim 1, characterized in that: The power mechanism is a screw stepping motor.

6. A stage light focusing device according to claim 5, characterized in that: The transmission mechanism is a screw motor slider, and a thread matching the motor shaft of the screw stepping motor is arranged in the screw motor slider.

7. A stage light focusing device according to claim 5, characterized in that: The first mounting plate is also provided with a clearance hole for avoiding the motor shaft of the screw motor.

8. A stage light focusing device according to claim 5, characterized in that: The screw stepper motor is mounted on the second mounting plate via a motor fixing plate.

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