Focusing mechanism and stage lamp

Abstract

The utility model provides a focusing mechanism and a stage lamp, and relates to the technical field of focusing lamps. The focusing mechanism comprises at least two driving rods, a focusing assembly and a fixing assembly provided with a lens fixing plate, a lens assembly to be focused is fixed to the lens fixing plate, one end of each driving rod penetrates through the lens fixing plate, and the driving rods are used for transmitting power for driving the lens assembly to move; the focusing assembly is elastically fixed on one side of the lens fixing plate, and the focusing assembly is embedded in the driving rod and is rotatably connected with the driving rod. According to the focusing mechanism provided by the embodiment of the invention, the influence caused by asynchronous movement of the driving rod can be reduced by using the elastic piece, and the phenomena of movement jamming and focusing jamming of the lens assembly are effectively avoided, so that the stability of a product is improved, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of focusing lamps, in particular, the present application relates to a focusing mechanism and a stage lamp. BACKGROUND

[0002] A focusing lamp is a lighting device that can change the illumination range and intensity by adjusting the focal length. Its working principle mainly depends on the lens assembly composed of internal lenses or mirrors. When the user needs to adjust the illumination range or illumination effect, the position of the lens assembly can be changed to change the propagation path and focal point of the light, achieving the effect of focusing.

[0003] In the prior art, multiple drive rods are often used to drive the lens assembly to move to achieve position adjustment. However, due to the influence of manufacturing process and assembly error, there is a size tolerance between the drive rods, so that the movement of the drive rods is not synchronized, which can easily cause the lens assembly to run jammed or even the focusing to be stuck, reducing the stability of the product and the user experience. UTILITY MODEL CONTENT

[0004] The present application provides a focusing mechanism and a stage lamp, which can solve the problem of the movement of the existing drive rods not being synchronized, which can easily cause the lens assembly to run jammed or even the focusing to be stuck, reducing the stability of the product and the user experience.

[0005] In order to achieve this purpose, the embodiments of the present application provide the following schemes.

[0006] According to an aspect of the present application, a focusing mechanism is provided, comprising at least two drive rods, a focusing assembly, and a fixed assembly provided with a lens fixed plate, the lens assembly to be focused is fixed to the lens fixed plate, one end of the drive rod passes through the lens fixed plate, and the drive rod is used to transmit power to drive the lens assembly to move;

[0007] The focusing assembly is elastically fixed on one side of the lens fixed plate, and the focusing assembly is nested in the drive rod and rotatably connected with the drive rod.

[0008] In one possible implementation, a driver is further included, each driving end of the driver is connected with one drive rod, and the number of the drive rods is the same as the number of the driving ends.

[0009] In one possible implementation, a motor fixed plate is further included, the driver includes a first motor and a second motor, the first motor and the second motor are fixed on one side of the motor fixed plate, the drive rods pass through the motor fixed plate and are connected with the first motor and the second motor, and the drive rods connected with the first motor and the second motor are different.

[0010] In a possible implementation, the focusing assembly comprises an elastic member, the lens fixing plate is provided with a through hole corresponding to the driving rod, and the middle part of the elastic member is opposite to the through hole and the outer part of the elastic member is fixed to the lens fixing plate.

[0011] In a possible implementation, the focusing assembly further comprises a backlash elimination screw nut provided with a spring, a first screw body and a second screw body, the first screw body and the second screw body are sleeved on the driving rod, the outer part of the driving rod is provided with a thread on the inner side of the first screw body and the second screw body, and the spring is sleeved on and connected with the first screw body and the second screw body.

[0012] In a possible implementation, the fixing assembly further comprises a fixing column and a rod fixing plate, one end of the fixing column is fixed to the motor fixing plate, the other end is connected with the rod fixing plate, and the lens fixing plate is arranged between the rod fixing plate and the motor fixing plate.

[0013] In a possible implementation, the fixing assembly further comprises a guide rod and a shaft sleeve, one end of the guide rod is fixed to the motor fixing plate, the other end passes through the lens fixing plate and is connected with the rod fixing plate, and the shaft sleeve is sleeved on the guide rod and fixed to the lens fixing plate.

[0014] In a possible implementation, the lens assembly is fixed to the lens fixing plate, and the motor fixing plate and the rod fixing plate are provided with openings corresponding to the lens fixing plate in regions corresponding to the lens assembly.

[0015] In a possible implementation, the fixing columns are symmetrically arranged on the two sides of the lens assembly.

[0016] According to an aspect of the embodiment of the present application, a stage lamp is provided, which comprises a lens assembly and the focusing mechanism as described above.

[0017] The technical scheme provided by the embodiment of the present application has the following beneficial effects:

[0018] The focusing mechanism provided by the present application comprises at least two driving rods, a fixing assembly and a focusing assembly, the lens assembly to be focused is fixed to the fixing assembly, one end of the driving rod passes through the fixing member, and the driving rod is used to transmit power for driving the lens assembly to move; the focusing assembly comprises an elastic member fixed to one side of the fixing member, and the elastic member is nested on and rotationally connected with the driving rod. The focusing mechanism of the embodiment of the present application can utilize the elastic member to reduce the influence of different steps of the driving rod, effectively avoid the occurrence of lens assembly movement jamming and focusing jamming, and thus improve the stability of the product and the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced.

[0020] Figure 1 A structural diagram of the focusing mechanism provided by the embodiments of the present application is shown in FIG. 1.

[0021] Figure 2 A front view of the focusing mechanism provided by the embodiments of the present application is shown in FIG. 2.

[0022] Figure 3 A left view of the focusing mechanism provided by the embodiments of the present application is shown in FIG. 3.

[0023] Figure 4 A top view of the focusing mechanism provided by the embodiments of the present application is shown in FIG. 4.

[0024] Figure 5 An exploded view of the focusing mechanism provided by the embodiments of the present application is shown in FIG. 5.

[0025] Figure 6 A structural diagram of the focusing assembly provided by the embodiments of the present application is shown in FIG. 6.

[0026] Figure 7 An exploded view of the focusing assembly provided by the embodiments of the present application is shown in FIG. 7.

[0027] Figure 8 A structural diagram of the stage lamp provided by the embodiments of the present application is shown in FIG. 8.

[0028] Label explanation: 1, driver; 2, driving rod; 3, fixed column; 4, motor fixing plate; 51, guide rod; 52, shaft sleeve; 53, rubber sleeve; 6, lens fixing plate; 7, focusing assembly; 71, elastic member; 721, first screw body; 722, spring; 723, second screw body; 8, rod fixing plate; 9, lens assembly. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described below in conjunction with the drawings in the present application. It should be understood that the embodiments described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application, and do not limit the technical solutions of the embodiments of the present application.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the terms “comprising” and “including” as used in embodiments of this application mean that the corresponding feature can be implemented as the presented feature, information, data, step, operation, element, and / or component, but do not exclude implementation as other features, information, data, step, operation, element, component, and / or combinations thereof supported by the art. It should be understood that when we say that an element is “connected” or “coupled” to another element, the one element can be directly connected or coupled to the other element, or it can mean that the one element and the other element establish a connection relationship through an intermediate element. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein indicates at least one of the items defined by the term; for example, “A and / or B” indicates implementation as “A,” or implementation as “A,” or implementation as “A and B.”

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] The technical solutions of this utility model and their effects are described below through several exemplary embodiments. It should be noted that the following embodiments can be referenced, borrowed from, or combined with each other. Identical terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0033] The focusing mechanism and stage light provided in this application are intended to solve at least one technical problem existing in the prior art.

[0034] Optionally, this application embodiment provides a focusing mechanism, such as... Figures 1-7 As shown, the focusing mechanism includes at least two drive rods 2, a focusing assembly 7, and a fixing assembly with a lens fixing plate 6. The lens assembly 9 to be focused is fixed to the lens fixing plate 6. One end of the drive rod 2 passes through the lens fixing plate 6 and is used to transmit the power to move the lens assembly 9. The focusing assembly 7 is elastically fixed to one side of the lens fixing plate 6. The focusing assembly 7 is nested in the drive rod 2 and rotatably connected to the drive rod 2. The elastic connection between the focusing assembly 7 and the lens fixing plate 6 eliminates the influence of asynchronous movement of the drive rod 2 and reduces the possibility of jamming or even stuck during focusing.

[0035] Optionally, the drive rod 2 can rotate around its axis or move linearly. When the drive rod 2 rotates, the focusing assembly 7, which is rotatably connected to the drive rod 2, converts the rotational motion into the power to drive the lens assembly 9 to move linearly.

[0036] In one embodiment, the number of driving rods 2 is two, the two driving rods 2 are arranged on different sides of the lens assembly 9, and the same end passes through the lens fixing plate 6 for fixing the lens assembly 9. The position of the lens assembly 9 is adjusted by the movement of the driving rod 2 to change the light irradiation angle and the light irradiation range.

[0037] Optionally, a driver 1 is further included, each driving end of the driver 1 corresponds to connect a driving rod 2, and the number of driving rods 2 is the same as the number of driving ends.

[0038] In one embodiment, the driver 1 can be a lead screw motor, which is connected to one end of the driving rod 2. The lead screw motor generates power to drive the lens assembly 9 to move for focusing.

[0039] Optionally, a motor fixing plate 4 is further included, the driver 1 includes a first motor and a second motor, the first motor and the second motor are fixed on one side of the motor fixing plate 4, the driving rod 2 passes through the motor fixing plate 4 and is connected to the first motor and the second motor, and the driving rods 2 connected to the first motor and the second motor are different.

[0040] Optionally, the lens fixing plate 6 is arranged on the side of the motor fixing plate 4 away from the first motor and the second motor.

[0041] Optionally, the focusing assembly 7 includes an elastic member 71, the lens fixing plate 6 is provided with a through hole corresponding to the driving rod 2, and the middle part of the elastic member 71 is opposite to the through hole and the outer part of the elastic member 71 is fixed to the lens fixing plate 6.

[0042] Optionally, the elastic member 71 is fixed on the side of the lens fixing plate 6 away from the motor fixing plate 4.

[0043] In one embodiment, the elastic member 71 includes an annular part and three legs, the three legs are arranged on the outside of the annular part at intervals, and the driving rod 2 passes through the inner ring of the annular part. The diameter of the inner ring is smaller than the support of the through hole on the lens fixing plate 6 for fixing the elastic member 71. The leg is provided with a circular hole for fixing, and the elastic member 71 is fixed on the lens fixing plate 6 through the circular hole.

[0044] Optionally, the focusing assembly 7 further comprises a backlash elimination screw nut provided with a spring 722, a first screw body 721 and a second screw body 723, the first screw body 721 and the second screw body 723 are sleeved on the driving rod 2, the outer part of the driving rod 2 is provided with threads on the inner side of the first screw body 721 and the second screw body 723, the spring 722 is sleeved on and connected with the first screw body 721 and the second screw body 723, the spring 722 keeps the first screw body 721 and the second screw body 723 in close cooperation with the threads on the driving rod 2 by elastic force in the backlash elimination screw nut, so as to eliminate the cooperation gap, ensure the stability and reliability of the connection, reduce the motion lag and effectively transmit the motion. The backlash elimination screw nut improves the operation precision while keeping the lens assembly 9 running smoothly in the focusing direction (the movement direction of the lens assembly 9).

[0045] In one embodiment, the bottom end of the first screw body 721 is fixedly connected with the elastic member 71, the top end is provided with a groove for limiting, and the bottom end of the second screw body 723 is provided with a protrusion matched with the groove. In operation, the protrusion at the bottom end of the second screw body 723 extends into the groove at the top end of the first screw body 721, and limits the distance between the first screw body 721 and the second screw body 723 by elasticity, so as to ensure the smooth operation of the focusing process and improve the operation precision.

[0046] Optionally, the fixing assembly further comprises a fixing column 3 and a rod fixing plate 8, one end of the fixing column 3 is fixed to the motor fixing plate 4, the other end is connected with the rod fixing plate 8, and the lens fixing plate 6 is arranged between the rod fixing plate 8 and the motor fixing plate 4.

[0047] Optionally, the fixing column 3 is arranged on both sides of the lens assembly 9, the lens fixing plate 6 is provided with openings corresponding to the two sides of the fixing column 3, and the fixing column 3 connecting the motor fixing plate 4 and the rod fixing plate 8 passes through the openings.

[0048] In one embodiment, the fixing column 3 can be a hexagonal prism, and the material thereof can be aluminum, wood, aluminum alloy, iron, iron alloy, plastic or other materials capable of fixing the focusing mechanism. The shape of the fixing column 3 can also be a cylinder or other shapes. The number of the fixing column 3 can be four, and the fixing columns 3 are symmetrically arranged on both sides of the lens assembly 9.

[0049] Optionally, the fixing assembly further comprises a guide rod 51 and a shaft sleeve 52, one end of the guide rod 51 is fixed to the motor fixing plate 4, the other end passes through the lens fixing plate 6 and is connected with the rod fixing plate 8, and the shaft sleeve 52 is sleeved on the guide rod 51 and fixed to the lens fixing plate 6. The guide rod 51 can move linearly relative to the shaft sleeve 52.

[0050] Optionally, the shaft sleeve 52 can comprise a base and a sleeve, the base is fixed to the lens fixing plate 6, and one end of the sleeve is connected with the base and the other end extends away from the lens fixing plate 6.

[0051] Optionally, the number of guide rods 51 can be the same as the number of drive rods 2, with one guide rod 51 on one side of each drive rod 2, which guides the fixed movement direction of the lens.

[0052] Optionally, the lens assembly 9 is fixed to the lens fixing plate 6, and the areas of the motor fixing plate 4 and the rod fixing plate 8 corresponding to the lens assembly 9 are provided with openings corresponding to the lens fixing plate 6, with the end of the lens assembly 9 facing the opening.

[0053] Optionally, the rod fixing plate 8 is provided with a limiting hole corresponding to the position of the guide rod 51. A rubber sleeve 53 is provided in the limiting hole, the top of the guide rod 51 is fixed in the rubber sleeve 53, and an annular groove for accommodating the wall of the limiting hole is provided on the outside of the rubber sleeve 53.

[0054] Optionally, a limiting hole can also be provided on the motor mounting plate 4, and a rubber sleeve 53 can also be provided in the limiting hole to fix the guide rod 51 on the motor mounting plate 4.

[0055] The focusing mechanism of this embodiment includes at least two drive rods 2, a fixing component, and a focusing component 7. The lens assembly 9 to be focused is fixed to the fixing component. One end of the drive rod 2 passes through the fixing component and is used to transmit the power to move the lens assembly 9. The focusing component 7 includes an elastic element 71 fixed to one side of the fixing component. The elastic element 71 is nested in the drive rod 2 and rotatably connected to the drive rod 2. The focusing mechanism of this embodiment can use the elastic element 71 to reduce the impact of asynchronous movement of the drive rod 2, effectively avoiding lens assembly 9 movement jamming and focusing jamming, thereby improving product stability and user experience.

[0056] According to one aspect of the embodiments of this application, a stage light is provided, such as... Figures 1-8 As shown, the stage light includes a lens assembly 9 and a focusing mechanism. The focusing mechanism includes at least two drive rods 2, a focusing component 7, and a fixing component with a lens fixing plate 6. The lens assembly 9 to be focused is fixed to the lens fixing plate 6. One end of the drive rod 2 passes through the lens fixing plate 6 and is used to transmit power to move the lens assembly 9. The focusing component 7 is elastically fixed to one side of the lens fixing plate 6, nested within the drive rod 2, and rotatably connected to it.

[0057] Optionally, the focusing mechanism further includes a driver 1, each drive end of the driver 1 being connected to a corresponding drive rod 2, and the number of drive rods 2 being the same as the number of drive ends.

[0058] Optionally, the focusing mechanism further comprises a motor fixing plate 4, the driver 1 comprises a first motor and a second motor, the first motor and the second motor are fixed on one side of the motor fixing plate 4, the driving rod 2 passes through the motor fixing plate 4 and is connected with the first motor and the second motor, and the first motor and the second motor are connected with different driving rods 2.

[0059] Optionally, the focusing assembly 7 comprises an elastic member 71, the lens fixing plate 6 is provided with a through hole corresponding to the driving rod 2, and the middle part of the elastic member 71 is opposite to the through hole and the outer part of the elastic member 71 is fixed to the lens fixing plate 6.

[0060] Optionally, the focusing assembly 7 further comprises a gap elimination screw nut provided with a spring 722, a first screw body 721 and a second screw body 723, the first screw body 721 and the second screw body 723 are sleeved on the driving rod 2, the outer part of the driving rod 2 is provided with a screw thread on the inner side of the first screw body 721 and the second screw body 723, and the spring 722 is sleeved on and connected with the first screw body 721 and the second screw body 723.

[0061] Optionally, the fixing assembly further comprises a fixing column 3 and a rod fixing plate 8, one end of the fixing column 3 is fixed to the motor fixing plate 4, the other end is connected with the rod fixing plate 8, and the lens fixing plate 6 is arranged between the rod fixing plate 8 and the motor fixing plate 4.

[0062] Optionally, the fixing assembly further comprises a guide rod 51 and a shaft sleeve 52, one end of the guide rod 51 is fixed to the motor fixing plate 4, the other end passes through the lens fixing plate 6 and is connected with the rod fixing plate 8, and the shaft sleeve 52 is sleeved on the guide rod 51 and fixed on the lens fixing plate 6.

[0063] Optionally, the lens assembly 9 is fixed to the lens fixing plate 6, and the motor fixing plate 4 and the rod fixing plate 8 are provided with openings corresponding to the lens fixing plate 6 in regions corresponding to the lens assembly 9.

[0064] Optionally, the fixing column 3 is symmetrically arranged on both sides of the lens assembly 9.

[0065] The terms "first", "second", "third", "fourth", "1", "2", and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described.

[0066] It should be understood that although each operation step in the flowchart of the embodiments of the present application is indicated by an arrow, the implementation order of the steps is not limited to the order indicated by the arrow. Unless explicitly stated herein, in some implementation scenarios of the embodiments of the present application, the implementation steps in each flowchart can be executed in other orders as required. In addition, part or all of the steps in each flowchart can include multiple sub-steps or multiple stages based on the actual implementation scenario. Part or all of these sub-steps or stages can be executed at the same time, and each of these sub-steps or stages can also be executed at different times. In the scenario where the execution times are different, the execution order of these sub-steps or stages can be flexibly configured as required, and the embodiments of the present application do not limit this.

[0067] The above is only an optional implementation of some implementation scenarios of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, other similar implementation means based on the technical idea of the present application without departing from the technical concept of the present application also belong to the protection scope of the embodiments of the present application.

Claims

1. A focusing mechanism, characterized by, The focusing mechanism comprises at least two driving rods, a focusing assembly and a fixing assembly provided with a lens fixing plate, a lens assembly to be focused is fixed to the lens fixing plate, one end of the driving rod penetrates the lens fixing plate, and the driving rod is used for transmitting power to drive the lens assembly to move. The focusing assembly is elastically fixed to one side of the lens fixing plate, and the focusing assembly is nested in the driving rod and is in rotational connection with the driving rod.

2. The focusing mechanism of claim 1, wherein The focusing mechanism further comprises a driver, each driving end of the driver is correspondingly connected with one driving rod, and the number of the driving rods is the same as that of the driving ends.

3. The focusing mechanism of claim 2, wherein, The focusing mechanism further comprises a motor fixing plate, the driver comprises a first motor and a second motor, the first motor and the second motor are fixed to one side of the motor fixing plate, the driving rods penetrate the motor fixing plate and are connected with the first motor and the second motor, and the driving rods connected with the first motor and the second motor are different.

4. The focusing mechanism of claim 3, wherein, The focusing assembly comprises an elastic member, the lens fixing plate is provided with a through hole corresponding to the driving rod, the middle part of the elastic member is opposite to the through hole, and the outer part of the elastic member is fixed to the lens fixing plate.

5. The focusing mechanism of claim 1, wherein, The focusing assembly further comprises a gap-eliminating screw rod nut provided with a spring, a first screw body and a second screw body, the first screw body and the second screw body are sleeved on the driving rod, the outer part of the driving rod is provided with a screw thread on the inner side of the first screw body and the second screw body, and the spring is sleeved on and connected with the first screw body and the second screw body.

6. The focusing mechanism of claim 4, wherein, The fixing assembly further comprises a fixing column and a rod member fixing plate, one end of the fixing column is fixed to the motor fixing plate, the other end is connected with the rod member fixing plate, and the lens fixing plate is arranged between the rod member fixing plate and the motor fixing plate.

7. The focusing mechanism of claim 6, wherein, The fixing assembly further comprises a guide rod and a shaft sleeve, one end of the guide rod is fixed to the motor fixing plate, the other end penetrates the lens fixing plate and is connected with the rod member fixing plate, and the shaft sleeve is sleeved on the guide rod and is fixed to the lens fixing plate.

8. The focusing mechanism of claim 6, wherein, The lens assembly is fixed to the lens fixing plate, and the motor fixing plate and the rod member fixing plate are provided with openings corresponding to the lens fixing plate in regions corresponding to the lens assembly.

9. The focusing mechanism of claim 8, wherein, The fixing columns are symmetrically arranged on both sides of the lens assembly.

10. A stage light, characterized by The stage lamp comprises a lens assembly and the focusing mechanism according to any one of claims 1-9.

Images