A fastening type effect device and stage lamp with the same

Abstract

The utility model relates to stage lamp technical field especially, more particularly to a fastening formula effect device and have its stage lamp, including the support that opens at least one light hole, the effect piece that covers in light hole and be used to carry effect piece's mounting seat, the mounting seat is hinged in light hole through bearing, still include the drive assembly of drive mounting seat rotation, wherein, the mounting seat extends with bearing cooperation's sleeve, the sleeve forms the positioning structure on, the inner ring or the outer ring surface of bearing corresponds sleeve and opens at least two positioning slots, the sleeve is embedded and clamped in each positioning slot through positioning structure, makes bearing and sleeve interference fit. The utility model can effectively prevent effect piece's mounting seat and bearing and occur cooperation loose and relative slip because long -term bear the effect of cold -heat cycle, help promote effect device transmission's stability.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and in particular to a fastening effect device and a stage light having the same. Background Technology

[0002] Stage lights are key equipment for achieving dynamic lighting effects, and they typically contain effects mechanisms. These mechanisms modulate the light beam using effect panels (such as pattern panels or prisms) and drive the panels to rotate, thus projecting dynamically changing light spots. Within the effects mechanism, the mounting base supporting the effect panels is pivotally connected to a support frame via bearings to ensure smooth rotation.

[0003] In existing technologies, the connection between the mounting base and the bearing inside the stage light head generally adopts an interference fit. This means that the shaft of the mounting base is pressed into the inner ring of the bearing by pressure, and the fixing and torque transmission are achieved by the radial pressure and friction generated between the mating surfaces of the two. This connection method has a simple structure, low cost, and can meet the usage requirements under normal operating conditions.

[0004] However, stage lights operate in a unique environment. During operation, their internal components, such as the light source, generate significant heat, reaching high temperatures, and then rapidly cool down after shutdown. This frequent and intense thermal cycle poses a severe challenge to the aforementioned interference fit structure. Because the mounting base and bearings are typically made of different metals with varying coefficients of thermal expansion, inconsistent deformation occurs under repeated temperature changes. This causes the initial interference fit to gradually decrease, resulting in a reduction in the fitting force. Over time, this interference fit connection is prone to loosening and slippage.

[0005] To enhance the reliability of axial fixation, some existing technologies, in addition to interference fit, also employ mechanical locking mechanisms. For example, ... Figure 10 As shown, the sleeve of the mounting base inside the lamp holder is designed to be longer than the bearing end face. After the sleeve is pressed into the bearing, the protruding end of the sleeve is stamped or riveted to deform it and press it tightly against the periphery of the bearing end face (i.e., "edge pressing" fixation). However, this method mainly provides axial restraint to prevent the mounting base from coming out of the bearing, but has limited effect on preventing circumferential relative rotation (i.e., slippage), and also results in an overly large overall size of the mounting base. When the interference fit fails or weakens due to thermal cycling, the torque transmission between the mounting base and the bearing relies almost entirely on the friction of the edge pressing end face, which is extremely unreliable under conditions of frequent start-stop and speed-changing rotation of the effect device. Once relative slippage occurs, it will also lead to a decrease in transmission accuracy, unstable projected light spot, and serious impact on the light effect quality.

[0006] In summary, neither simple interference fits nor combinations of interference fits and end clamping can meet the long-term reliability requirements for high-precision, long-life transmission under the harsh operating conditions of stage lighting. Therefore, existing technologies urgently need a fastening structure that can effectively resist the effects of thermal cycling while ensuring dual circumferential and axial locking to prevent loosening and slippage of the connection. Utility Model Content

[0007] In order to solve the technical problems existing in the prior art, this utility model discloses a fastening effect device, which can effectively prevent the mounting base of the effect film and the bearing from loosening and slipping due to long-term exposure to hot and cold cycles, thus helping to improve the stability of the transmission of the effect device, thereby ensuring the quality of light effect and extending the service life of the equipment.

[0008] This utility model provides a fastening effect device, including a bracket with at least one light-transmitting hole, an effect sheet covering the light-transmitting hole, and a mounting base for mounting the effect sheet. The mounting base is pivotally connected to the light-transmitting hole via a bearing, and also includes a drive assembly for driving the shaft of the mounting base to rotate.

[0009] The mounting base extends to include a sleeve that mates with the bearing;

[0010] The sleeve has a positioning structure, and the inner or outer ring surface of the bearing has at least two positioning grooves corresponding to the sleeve. The sleeve is embedded and locked into each of the positioning grooves through the positioning structure, so that the bearing and the sleeve are interference fit.

[0011] Specifically, in this invention, the basic structure includes a support bracket serving as a foundation, with at least one light-transmitting hole for the light beam to pass through. At the location of the light-transmitting hole, an effect piece, such as a prism or pattern piece, is provided to modulate the light beam to form a specific light spot. To support the effect piece, the device also includes a mounting base, on which the effect piece is fixed. To achieve dynamic changes in the light spot, the mounting base is rotatably pivotally connected to the support bracket via a bearing. Simultaneously, a drive assembly is configured to drive the mounting base, along with the effect piece, to rotate along its own central axis. The key structure of this invention lies in the connection structure between the mounting base and the bearing. Specifically, a sleeve extending axially away from the side where the effect piece is located is integrally formed or fixedly connected to the mounting base. This sleeve is fitted with the inner or outer ring of the bearing using an interference fit; that is, before assembly, the outer diameter of the sleeve is slightly larger than the inner diameter of the bearing's inner ring (or the inner diameter of the sleeve is slightly smaller than the outer diameter of the bearing's outer ring), forming a tight connection through pressure assembly. Building upon this interference fit, this invention further provides at least two locating grooves on the inner or outer ring surface of the bearing, i.e., the mating surface with the sleeve; correspondingly, a locating structure is formed on the sleeve. During the press-fit assembly process, the locating structure on the sleeve embeds and tightly engages with each locating groove of the bearing. Thus, when the device operates and the drive assembly rotates the mounting base, a robust mechanical interlock is formed between the locating structure and the locating grooves, thereby fixing the sleeve and the inner or outer ring of the bearing as a single unit. This effectively prevents relative rotation or axial slippage that may occur due to a decrease in the mating force. Simultaneously, the mounting base does not need to protrude from the bearing, effectively reducing the overall size.

[0012] According to the present invention, in a fastening effect device, the hardness of the sleeve is less than the hardness of the bearing.

[0013] According to the present invention, a fastening effect device is provided, wherein the sleeve is made of metal.

[0014] According to the present invention, a fastening effect device comprises several positioning grooves that surround the central axis of the bearing and are evenly distributed circumferentially.

[0015] According to the present invention, a fastening effect device is provided, wherein the positioning structure is a partial protrusion that is embedded in the positioning groove after the sleeve is partially deformed by pressure.

[0016] According to a fastening device of the present invention, the outer periphery of the sleeve abuts against the inner ring of the bearing, and the positioning groove is disposed on the side of the inner ring of the bearing near the sleeve.

[0017] According to the present invention, a fastening effect device is provided, wherein the effect sheet is a prism or a pattern sheet.

[0018] According to the present invention, a fastening effect device is provided in which the mounting base is provided with a mounting hole corresponding to the sleeve, the effect piece is mounted in the mounting hole, and the outer periphery of the mounting base is provided with a serrated segment; the driving component includes a motor that provides power, a drive gear disposed on the motor shaft, and a transition gear that transmits the driving force of the motor to the mounting base and meshes with the drive gear, the transition gear meshing with the serrated segment on the mounting base.

[0019] According to the present invention, a fastening effect device includes a bracket comprising a circular base plate, wherein a plurality of light-transmitting holes are provided and distributed circumferentially around the central axis of the circular base plate; a plurality of mounting seats are pivotally connected to each of the light-transmitting holes via bearings; each mounting seat has a serrated segment on its outer periphery; the drive assembly includes a motor and a central gear, the central gear being coaxially pivotally connected to the circular base plate, and the motor shaft passing through the circular base plate and coaxially connected to the central gear; wherein the serrated segments on the outer periphery of each mounting seat mesh with the central gear.

[0020] This utility model also provides a stage light, the structure of which includes a lamp head with a light outlet and a support base supporting the lamp head; the lamp head is provided with a light source that generates a light beam, a light-emitting lens covering the light outlet, and a fastening effect device as described in any one of the claims, the fastening effect device intercepting the light beam of the light source and producing a specific light effect.

[0021] According to the present invention, a stage light includes a support base comprising a base housing and an arm pivotally connected to the base housing, wherein the light head is pivotally connected to the arm.

[0022] This invention provides a fastening effect device and a stage light incorporating it. Even if the sleeve and bearing are not initially fitted with an interference fit, the mechanical locking between the positioning structure and the positioning groove provides a mechanical, friction-free locking, allowing for a tight fit. When the stage light operates in a high-temperature environment, material expansion may cause changes in the interference fit and weaken the radial fit force. The positioning structure can still rigidly resist the torque transmitted by the drive assembly through its physical locking with the positioning groove wall, effectively preventing circumferential slippage of the sleeve on the inner or outer ring of the bearing. Similarly, when the equipment cools and the material shrinks, this mechanical locking structure can still maintain the relative position of the two components, preventing axial movement. This composite assembly method, combining radial interference locking with circumferential / axial mechanical locking, helps enhance the reliability of the connection and its resistance to thermal cycling. Even under long-term and harsh temperature alternation environments, it can effectively avoid slippage and vibration caused by loose connections, ensuring the smoothness and accuracy of the effect film rotation. This helps to ensure the stability of the light spot projection and the quality of dynamic light effects, significantly improving the transmission accuracy and service life of the effect device, and meeting the technical requirements of professional stage lights for high-precision and long-life transmission. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an overall structural diagram of the effect device of this utility model;

[0025] Figure 2 This is a cross-sectional view of the effect device of this utility model;

[0026] Figure 3 This is an exploded view of the effect device of this utility model;

[0027] Figure 4 This is an assembly drawing (top view) of the sleeve and bearing of this utility model;

[0028] Figure 5 This is a structural diagram of the bearing of this utility model;

[0029] Figure 6 This is an assembly diagram (cross-sectional view) of the sleeve and bearing of this utility model;

[0030] Figure 7 yes Figure 6A magnified view of a portion of the image; Figure 8 This is a structural diagram of Embodiment 2 of the present invention;

[0031] Figure 9 This is a structural diagram of the stage lamp of this utility model;

[0032] Figure 10 This is a schematic diagram of the assembly structure of the internal mounting base and bearing of an existing stage light head.

[0033] Figure label:

[0034] 1. Light-transmitting hole; 2. Bracket; 3. Effect plate; 4. Mounting base; 5. Bearing; 6. Sleeve; 7. Positioning groove; 8. Serrated section; 9. Drive gear; 10. Transition gear; 11. Center gear; 12. Light outlet; 13. Light source; 14. Local protrusion; 15. Circular substrate.

[0035] 100. Lamp head, 101. Arm, 102. Base casing. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0037] Example 1

[0038] like Figures 1 to 7 as well as Figure 9 As shown, this embodiment illustrates a fastening-type effects device and its application in stage lighting. The fastening-type effects device 200 includes a bracket 2, at least one effects panel 3, a mounting base 4 for mounting the effects panel 3, and a drive assembly. The bracket 2 has at least one light-transmitting hole 1, and the effects panel 3 covers the light-transmitting hole 1 to intercept and process the passing light beam. The mounting base 4 is pivotally connected to the bracket 2 via a bearing 5, allowing the effects panel 3 to rotate about its own central axis.

[0039] Specifically, the mounting base 4 has a sleeve 6 extending in a direction away from the effect piece 3. In this embodiment, the outer circumferential surface of the sleeve 6 is fitted onto the inner ring of the bearing 5. To solve the problem of loosening of the interference fit due to thermal cycling in the prior art, this solution forms a positioning structure on the sleeve 6. This positioning structure engages with the area of ​​the bearing 5 near the sleeve 6, achieving a tight connection between the sleeve 6 and the bearing 5. Preferably, the bearing 5 and the sleeve 6 can also be initially fitted with an interference fit, combined with the use of the positioning structure. This dual fixing method, combining interference fit and mechanical engagement, effectively enhances the connection reliability between the mounting base 4 and the bearing 5. Even under drastic temperature changes, it can effectively prevent relative slippage or vibration between the two, ensuring transmission accuracy and long-term operational stability.

[0040] To facilitate the formation of the positioning structure, preferably, the hardness of the mounting base 4, particularly its sleeve 6, is less than or equal to the hardness of the bearing 5. For example, the sleeve 6 of the mounting base 4 can be made of a metal material such as aluminum alloy, while the bearing 5 is usually made of bearing steel with higher hardness. Optionally, the sleeve 6 can also be made of plastic, creating a hardness difference with the bearing 5. This hardness difference allows for localized plastic deformation of the softer sleeve 6 during the machining of the positioning structure without damaging the high-precision bearing 5.

[0041] More specifically, in this embodiment, several positioning grooves 7 are machined on the inner ring surface of the bearing 5. These positioning grooves 7 can surround the central axis of the bearing 5 and be evenly distributed circumferentially to ensure balanced force distribution. After the sleeve 6 is pressed into the inner ring of the bearing 5 through an interference fit, pressure is applied to the side wall of the sleeve 6 at the position corresponding to the positioning grooves 7 through processes such as stamping, causing the material of the sleeve 6 to be deformed under pressure and squeezed into the positioning grooves 7, thereby forming local protrusions 14. These local protrusions 14 formed by filling the material of the sleeve 6 constitute the positioning structure, which is embedded and locked in the positioning grooves 7, realizing reliable locking of the sleeve 6 and the inner ring of the bearing 5 in the circumferential and axial directions.

[0042] In this embodiment, the effect sheet 3 can be an optical element such as a prism or a patterned sheet, used to produce a specific light spot effect. For example... Figures 1 to 3 The structure shown has a light-transmitting hole 1 on the bracket 2 and a corresponding mounting hole 3 on the mounting base 4 for mounting the effect piece 3. The outer periphery of the mounting base 4 has serrated sections 8. The drive assembly includes a motor (not shown) providing power, a drive gear 9 connected to the motor's output shaft, and a transition gear 10. The transition gear 10 is pivotally connected to the bracket 2 and meshes with both the drive gear 9 and the serrated section 8 of the mounting base 4, thereby precisely transmitting the motor's rotational power to the mounting base 4 and driving the effect piece 3 to rotate stably.

[0043] The aforementioned fastening effect device can be applied to a stage light. For example... Figure 9 As shown, the stage light includes a lamp head 100 and a support base for supporting the lamp head 100. The support base typically includes a base housing 102 and an arm 101 pivotally connected to the base housing 102. The lamp head 100 is pivotally connected to the arm 101, allowing for a wide range of swinging and rotation. The lamp head 100 houses the core components of the optical system, including a light source 13 that generates a light beam, one or more of the aforementioned fixed effect devices 200, and a light-emitting lens located at the light outlet 12 at the front of the lamp head. During operation, the light beam generated by the light source 13 passes sequentially through the internal optical elements. When the light beam passes through the fixed effect device 200, the effect plate 3 of the device intercepts the light beam and, through its own rotation, projects a dynamically changing specific light effect onto the target plane. Because the effect device 200 employs the aforementioned fixed structure, it ensures that the effect plate maintains stable and precise rotation even under high-temperature, high-frequency start-stop operating environments, thereby guaranteeing the quality and long-term reliability of the stage light's output light effect.

[0044] Example 2

[0045] like Figure 8 As shown, this embodiment demonstrates another application of the fastening effect device, commonly used to form rotating pattern or color discs for stage lights. The main difference from Embodiment 1 lies in the structure of the support 2 and the drive assembly.

[0046] In this embodiment, the support 2 is a circular base plate 15 with multiple light-transmitting holes 1 evenly distributed along its circumference. Correspondingly, multiple mounting seats 4 are provided, each mounting seat 4 mounting an effect piece 3 (e.g., different pattern pieces), and pivotally connected to the corresponding light-transmitting hole 1 via its respective bearing 5. The connection between each mounting seat 4 and the bearing 5 adopts the fastening structure described in Embodiment 1, that is, through a dual locking method of interference fit and positioning structure, ensuring high precision and high reliability in the rotation of each effect piece.

[0047] The structure of the drive assembly is also modified accordingly, comprising a motor (not shown) and a central gear 11. The central gear 11 is coaxially pivotally connected to the center of the circular base plate 15. The motor shaft passes through the circular base plate 15 and is fixedly connected to the central gear 11, or power is transmitted to the central gear 11 via a transmission mechanism such as a synchronous belt. Each mounting base 4 also has serrated segments 8 on its outer periphery, and all the serrated segments 8 of the mounting base 4 mesh with the central gear 11. When the motor drives the central gear 11 to rotate, the central gear 11, like the sun gear in a planetary gear system, simultaneously drives all the meshed mounting bases 4 to rotate around their respective central axes, thereby achieving the synchronous rotation effect of all pattern pieces.

[0048] In summary, this application, based on a traditional interference fit, adds a mechanical positioning structure formed by the partial deformation of the sleeve squeezing into the bearing positioning groove, and optionally supplements it with an axial locking structure with end riveting, thus forming a multi-layered fastening scheme combining interference fit, radial locking, and axial limiting. This scheme effectively overcomes the problem of connection loosening caused by thermal expansion and contraction, significantly improves the stability and transmission accuracy of the effect plate rotation, extends the service life of the device, and can meet the stringent requirements of modern stage lighting for high performance and high reliability.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fastening effect device, characterized in that, It includes a bracket (2) with at least one light-transmitting hole (1), an effect sheet (3) covering the light-transmitting hole (1), and a mounting base (4) for mounting the effect sheet (3), the mounting base (4) being pivotally connected to the light-transmitting hole (1) via a bearing (5), and also includes a drive assembly for driving the mounting base (4) to rotate; The mounting base (4) extends to form a sleeve (6) that mates with the bearing (5). A positioning structure is formed on the sleeve (6). At least two positioning grooves (7) are provided on the inner or outer ring surface of the bearing (5) corresponding to the sleeve (6). The sleeve (6) is embedded and clamped in each of the positioning grooves (7) through the positioning structure, so that the bearing (5) and the sleeve (6) are in an interference fit.

2. The fastened effects device of claim 1, wherein, The hardness of the sleeve (6) is less than that of the bearing (5).

3. The fastened effects device of claim 2, wherein, The sleeve (6) is made of metal.

4. The fastened effects device of claim 1, wherein, Several of the positioning grooves (7) surround the central axis of the bearing (5) and are evenly distributed circumferentially.

5. The fastened effects device of claim 1, wherein, The positioning structure is a local protrusion (14) that is embedded in the positioning groove (7) after the sleeve (6) is partially deformed by pressure.

6. The fastened effects device of claim 1, wherein, The outer periphery of the sleeve (6) abuts against the inner ring of the bearing (5), and the positioning groove (7) is provided on the side of the inner ring of the bearing (5) near the sleeve (6).

7. The fastened effects device of claim 1, wherein, The effect sheet (3) is a prism or pattern sheet.

8. The fastened effects device of claim 1, wherein, The mounting base (4) is provided with mounting holes corresponding to the sleeve (6), the effect piece (3) is mounted in the mounting holes, and the outer periphery of the mounting base (4) is provided with serrated sections (8); The drive assembly includes a motor that provides power, a drive gear (9) mounted on the motor shaft, and a transition gear (10) that transmits the driving force of the motor to the mounting base (4) and meshes with the drive gear (9). The transition gear (10) meshes with a serrated section (8) on the mounting base (4).

9. The fastened effects device of claim 1, wherein, The support (2) includes a circular substrate (15), and the number of light-transmitting holes (1) is set to be multiple and distributed circumferentially around the central axis of the circular substrate (15); The plurality of mounting bases (4) are pivotally connected to each of the light-transmitting holes (1) via bearings (5); Each of the mounting bases (4) has a serrated section (8) on its outer periphery; The drive assembly includes a motor and a central gear (11), the central gear (11) being coaxially pivotally connected to the circular base plate (15), and the motor shaft passing through the circular base plate (15) and coaxially connected to the central gear (11). The serrated segments (8) on the outer periphery of each of the mounting bases (4) are all engaged with the central gear (11).

10. A stage light, characterized by The lamp head (100) includes a light outlet (12) and a support base supporting the lamp head (100). The lamp head (100) is provided with a light source (13) that generates a light beam, a light-emitting lens covering the light outlet (12), and a fastening effect device (200) as described in any one of claims 1 to 9, wherein the fastening effect device intercepts the light beam of the light source and produces a specific light effect.

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