Stage lamp with double-positioning oil seal cover plate

Abstract

The utility model discloses a stage lamp with a dual-positioning oil seal cover plate, which comprises an arm, a bottom case for supporting the arm to rotate and a lamp holder pivoted to the arm and used for emitting light, the arm and the bottom case and / or the arm and the lamp holder are pivoted through a rotating component, the rotating component penetrates through the bottom case, the arm or a mounting plate on the lamp holder, and the oil seal cover plate is arranged on the mounting plate. The shaft sleeve of the rotating assembly and the mounting plate are sealed through a sealing ring, the sealing ring is provided with an inner ring and an outer ring, the ends of the inner ring and the outer ring are mutually connected, the gland abuts against the sealing ring on the mounting plate, the gland abuts against the inner ring and the outer ring at the same time, the inner side of the inner ring abuts against the periphery of the shaft sleeve, and the outer side of the outer ring abuts against the mounting plate. The gland abuts against the inner ring and the outer ring at the same time to form double abutting so that the sealing ring can be fixed to the installation position, at the moment, the inner ring can tightly hold the periphery of the shaft sleeve in the radial direction, the outer ring expands in the radial direction to be attached to the installation plate, and the leakage risk caused by the fact that the sealing ring moves due to insufficient abutting force or the single side of the sealing ring is abraded is avoided.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and more specifically, to a stage light with a double-positioning oil seal cover. Background Technology

[0002] In stage lighting equipment, rotating components between the lamp head, arm, and base housing require lubricating oil to maintain rotation. However, the gaps between these rotating components are easily invaded by moisture and dust, which mix with the lubricating oil to form dirt. This not only increases the frictional resistance of rotation but may also seep into the lamp body and damage electronic components. In existing solutions, sealing rings are added to seal the gaps between rotating components. To prevent loosening, a flat pressure plate is usually used to hold the edge of the sealing ring. However, when the lamp is side-mounted and rotates at high frequency, the increased stress concentration due to gravity means that relying solely on the pressure plate to hold the edge of the sealing ring can easily lead to uneven stress. With the occasional shaking of the rotating shaft, the sealing ring may even shift and deform, thus increasing the risk of seal failure. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this utility model provides a stage light with a dual-positioning oil seal cover plate. The cover plate simultaneously positions and supports the inner and outer rings of the sealing ring, preventing the sealing ring from shifting and failing due to other stresses.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a stage light with a double-positioning oil seal cover plate, including an arm, a base housing supporting the rotation of the arm, and a lamp head pivotally connected to the arm for emitting light. The arm and the base housing and / or the arm and the lamp head are pivotally connected by a rotating assembly. The rotating assembly passes through a mounting plate on the base housing, the arm, or the lamp head, and the bushing of the rotating assembly is sealed to the mounting plate by a sealing ring. The sealing ring has an inner ring and an outer ring with their ends connected to each other. It also includes a pressure cap that holds the sealing ring against the mounting plate. The pressure cap holds both the inner ring and the outer ring. The inner side of the inner ring holds the outer periphery of the bushing, and the outer side of the outer ring holds the mounting plate.

[0005] The inner and outer rings of the sealing ring are connected by an integrated sealing structure. The pressure cap simultaneously holds both the inner and outer rings, forming a double-pressure structure to fix the sealing ring in the installation position. At this time, the inner ring can radially hug the outer circumference of the bushing, while the outer ring radially expands to fit the mounting plate. Under the combined force of the inner and outer rings, the radial runout of the rotating assembly during high-speed rotation is reduced, compensating for axial clearance fluctuations and avoiding the risk of leakage due to insufficient holding force causing the sealing ring to shift or wear on one side of the sealing ring. This ensures the waterproof stability of the rotating assembly and effectively prevents external dust and moisture from entering the lamp fixture from the rotating assembly.

[0006] Furthermore, the gland abuts against the end face of the inner ring away from the mounting plate. The gland applies a force to the inner ring to keep it abutting against the mounting plate, and uses friction to keep the sealing ring fixed.

[0007] Furthermore, the gland abuts against the side of the inner ring away from the bushing. By applying pressure to the outer side of the inner ring, the gland counteracts the centrifugal force experienced by the inner ring during high-speed operation of the rotating assembly, effectively suppressing its radial displacement tendency and maintaining a continuous tight fit at the dynamic sealing interface.

[0008] Furthermore, the pressure cap protrudes towards the mounting plate with a limiting protrusion for supporting the inner ring, and the side of the limiting protrusion abuts against the outer side of the inner ring. By supporting the inner ring with the limiting protrusion, the thickness of other parts of the pressure cap can be effectively reduced, saving material.

[0009] Furthermore, the pressure cap is an annular ring, and the limiting protrusion is a continuous annular protrusion. The use of a continuous annular protrusion ensures a more uniform bearing force on the inner ring, preventing deformation and sealing failure due to uneven local force. Moreover, this structure of the pressure cap facilitates processing and installation.

[0010] Furthermore, the inner ring of the sealing ring is shorter than the outer ring, and the gland forms a receiving groove for accommodating the end of the outer ring away from the mounting plate, with the side of the outer ring abutting against the side wall of the receiving groove. This makes the installation of the sealing ring and the gland fit more closely, saving overall space, while the side wall of the receiving groove can maintain sufficient resistance to the outer ring, further preventing axial displacement of the sealing ring.

[0011] Furthermore, the sealing ring is a skeleton oil seal. Thus, the inner ring provides a dynamic seal to the bushing, while the outer ring provides a static seal to the mounting plate. Simultaneously, the skeleton oil seal has a dustproof lip to prevent external dust from entering the rotating assembly, and a sealing lip to prevent moisture from entering. At the same time, the sealing lip can also effectively prevent lubricating oil leakage from the rotating assembly, avoiding the formation of oily contaminants.

[0012] Furthermore, the ends of the inner and outer rings of the sealing ring that connect to each other form a connecting section, and the mounting plate has a recessed mounting groove for accommodating the connecting section. The sealing ring is at least partially embedded in the mounting groove, allowing for pre-positioning during installation and facilitating installation.

[0013] Furthermore, the arm and the lamp head, as well as the arm and the base housing, are pivotally connected via rotating components. The base housing is pivotally connected to the horizontal support of the arm, and the mounting plate is either the top plate of the base housing or the horizontal support of the arm. The lamp head is pivotally connected to the vertical support of the arm, and the mounting plate is either the vertical support of the arm or a supporting side plate of the lamp head near the arm. When the base housing is side-mounted on the stage truss, the pressure cap simultaneously abuts against the inner and outer rings of the sealing ring, effectively increasing the holding force on the sealing ring and reducing the impact of gravity on the sealing ring.

[0014] Furthermore, the mounting plate is the top plate of the base chassis, the pivot shaft of the rotating assembly is fixedly connected to the bottom plate of the base chassis, and the bushing is fixedly connected to the horizontal support of the arm; the pressure cap holds the sealing ring against the side of the top plate of the base chassis away from the arm. Since the base chassis typically houses a switching power supply and various electronic components for controlling the operation of the lighting fixtures, the sealing ring prevents external moisture and dust from entering the interior of the base chassis, maintaining an ideal working environment within the chassis and effectively ensuring the reliability and lifespan of the internal electronic components. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the pressure cap of this utility model when it only abuts against the inner ring at the end face away from the mounting plate.

[0016] Figure 2 yes Figure 1 A magnified schematic diagram of part A in the middle.

[0017] Figure 3 This is a cross-sectional schematic diagram of the pressure cap abutting the inner ring on the side away from the bushing in this utility model.

[0018] Figure 4 yes Figure 2A magnified schematic diagram of part B in the middle section.

[0019] Figure 5 This is an exploded structural diagram of the arm, base housing, and rotating assembly in this utility model.

[0020] In the picture:

[0021] 100. Rotating assembly; 110. Bushing; 120. Pivot shaft; 130. Bearing; 200. Arm; 210. Horizontal support; 220. Vertical support; 230. Outer cover; 300. Base chassis; 310. Top plate; 311. Chassis truss; 312. Through hole; 320. Bottom plate; 330. Side plate; 400. Mounting plate; 410. Mounting groove; 500. Pressure cap; 510. Limiting protrusion; 520. Receiving groove; 600. Sealing ring; 610. Inner ring; 620. Outer ring; 630. Connecting section; 640. Dustproof lip; 650. Sealing lip; 660. Clamping spring; 710. Driven wheel; 720. Snap ring. Detailed Implementation

[0022] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] like Figures 1 to 4 As shown, a stage light with a double-positioning oil seal cover includes an arm 200, a base housing 300 supporting the rotation of the arm 200, and a lamp head pivotally connected to the arm 200 for emitting light. The arm 200 and the base housing 300 and / or the arm 200 and the lamp head are pivotally connected by a rotating assembly 100. The rotating assembly 100 passes through the base housing 300, the arm 200, or the mounting plate 400 on the lamp head. The bushing 110 of component 100 is sealed to the mounting plate 400 by a sealing ring 600. The sealing ring 600 has an inner ring 610 and an outer ring 620 connected at their ends. It also includes a pressure cap 500 that holds the sealing ring 600 against the mounting plate 400. The pressure cap 500 holds both the inner ring 610 and the outer ring 620. The inner side of the inner ring 610 holds the outer periphery of the bushing 110, and the outer side of the outer ring 620 holds the mounting plate 400.

[0024] The inner ring 610 and outer ring 620 of the sealing ring 600 are connected by an integrated sealing structure. The pressure cap 500 simultaneously holds the inner ring 610 and outer ring 620, forming a double pressure to fix the sealing ring 600 in the installation position. At this time, the inner ring 610 can radially hug the outer circumference of the bushing 110, while the outer ring 620 radially expands to fit the mounting plate 400. Under the combined force of the inner ring 610 and outer ring 620, the radial runout of the rotating assembly 100 during high-speed rotation is reduced, compensating for axial clearance fluctuations and avoiding the risk of leakage due to insufficient holding force causing the sealing ring 600 to shift or wear on one side of the sealing ring 600. This ensures the waterproof stability of the rotating assembly 100 and effectively prevents external dust and moisture from entering the lamp's interior through the rotating assembly 100.

[0025] Preferably, both the pressure cap 500 and the sealing ring 600 have through holes through which the bushing 110 passes. The sealing ring 600 and the bushing 110 are interference-fitted so that the inner ring 610 of the sealing ring 600 tightly hugs the outer periphery of the bushing 110. The inner diameter of the through hole of the pressure cap 500 is larger than the diameter of the bushing 110, so that there is a gap between the pressure cap 500 and the bushing 110 to avoid contact friction between the two during operation.

[0026] Preferably, the rotating assembly 100 further includes a pivot shaft 120, which is rotatably connected to the bushing 110 via a bearing 130; it also includes a drive assembly, which includes a driven wheel 710 fixedly connected to the pivot shaft 120, a motor that provides driving force, and a synchronous belt that transmits the driving force of the motor to the driven wheel 710, thereby enabling the pivot shaft 120 to rotate relative to the bushing 110.

[0027] Preferably, the pressure cap 500 is detachably connected to the mounting plate 400 by screws according to the design, or it can be supported by other components so that it and the mounting plate 400 together clamp the sealing ring 600.

[0028] Preferably, the pressure cap 500 is made of alloy and can be securely connected to the mounting plate 400; other materials may also be selected as needed.

[0029] In a preferred embodiment of this invention, the pressure cap 500 abuts against the end face of the inner ring 610 away from the mounting plate 400. The pressure cap 500 applies a force to the inner ring 610 to keep it abutting against the mounting plate 400, and uses friction to keep the sealing ring 600 fixed.

[0030] In a preferred embodiment of this invention, the pressure cap 500 abuts against the side of the inner ring 610 away from the bushing 110. By applying pressure to the outside of the inner ring 610, the pressure cap 500 counteracts the centrifugal force experienced by the inner ring 610 when the rotating assembly 100 is operating at high speed, effectively suppressing its radial displacement tendency and maintaining a continuous tight fit of the dynamic sealing interface.

[0031] In a preferred embodiment of this invention, the pressure cap 500 has a limiting protrusion 510 protruding towards the mounting plate 400 for abutting the inner ring 610, and the side of the limiting protrusion 510 abuts against the outer side of the inner ring 610. By using the limiting protrusion 510 to abut against the inner ring 610, the thickness of other parts of the pressure cap 500 can be effectively reduced, saving materials.

[0032] like Figure 4 As shown, preferably, the limiting protrusion 510 simultaneously abuts against one end face of the inner ring 610 away from the mounting plate 400 and one side face away from the bushing 110.

[0033] like Figure 1 and Figure 5 As shown, in a preferred embodiment of this utility model, the pressure cap 500 is an annular ring, and the limiting protrusion 510 is a continuous annular protrusion. The use of a continuous annular protrusion ensures that the supporting force on the inner ring 610 is more uniform, preventing deformation and sealing failure due to uneven local force. Furthermore, this structure of the pressure cap 500 facilitates processing and installation.

[0034] Preferably, the limiting protrusion 510 is integrally formed on the surface of the pressure cap 500 near the inner ring 610.

[0035] Optionally, the limiting protrusions 510 are evenly spaced to save material.

[0036] In other embodiments of this utility model, the pressure cap 500 can be formed by assembling multiple pressure plates.

[0037] In a preferred embodiment of this invention, the inner ring 610 of the sealing ring 600 is shorter than the outer ring 620. The pressure cap 500 forms a receiving groove 520 for accommodating the end of the outer ring 620 away from the mounting plate 400, and the side of the outer ring 620 abuts against the side wall of the receiving groove 520. This makes the installation of the sealing ring 600 and the pressure cap 500 more secure, saving overall space. At the same time, the side wall of the receiving groove 520 can maintain sufficient resistance to the outer ring 620, further preventing axial displacement of the sealing ring 600.

[0038] In a preferred embodiment of this invention, the sealing ring 600 is a skeleton oil seal. Thus, the inner ring 610 provides a dynamic seal to the bushing 110, while the outer ring 620 provides a static seal to the mounting plate 400. Simultaneously, the skeleton oil seal has a dustproof lip 640 to prevent external dust from entering the rotating assembly 100, and a sealing lip 650 to prevent moisture from entering. Furthermore, the sealing lip 650 effectively prevents lubricating oil leakage from the rotating assembly 100, avoiding the formation of oily deposits.

[0039] Preferably, the sealing ring 600 is covered with rubber material to achieve a good sealing effect; and the inner ring 610 is provided with a clamping spring 660 on the side near the outer ring 620 to limit its deformation or displacement.

[0040] In a preferred embodiment of this invention, the ends where the inner ring 610 and the outer ring 620 of the sealing ring 600 connect to each other form a connecting section 630, and the mounting plate 400 has a recessed mounting groove 410 for accommodating the connecting section 630. The sealing ring 600 is at least partially embedded in the mounting groove 410, which allows for pre-positioning during installation and facilitates installation. Preferably, the sealing ring 600 is a skeleton oil seal, and its connecting section 630 forms the skeleton of the sealing ring 600.

[0041] In a preferred embodiment of this utility model, the arm 200 and the lamp head, as well as the arm 200 and the base housing 300, are pivotally connected via a rotating assembly 100. The base housing 300 is pivotally connected to the horizontal support 210 of the arm 200. The mounting plate 400 is either the top plate 310 of the base housing 300 or the horizontal support 210 of the arm 200. The lamp head is pivotally connected to the vertical support 220 of the arm 200. The mounting plate 400 is either the vertical support 220 of the arm 200 or the supporting side plate 330 of the lamp head near the arm 200. When the base housing 300 is side-mounted on the stage truss, the pressure cover 500 simultaneously abuts against the inner ring 610 and the outer ring 620 of the sealing ring 600, effectively increasing the holding force on the sealing ring 600 and reducing the influence of gravity on the sealing ring 600.

[0042] In a preferred embodiment of this utility model, the mounting plate 400 is the top plate 310 of the base housing 300, the pivot shaft 120 of the rotating assembly 100 is fixedly connected to the base plate 320 of the base housing 300, and the bushing 110 is fixedly connected to the horizontal support 210 of the arm 200; the pressure cap 500 holds the sealing ring 600 against the side of the top plate 310 of the base housing 300 away from the arm 200. Since the base housing 300 generally houses a switching power supply and various electronic components for controlling the operation of the lighting fixtures, the sealing ring 600 prevents external moisture and dust from entering the interior of the base housing 300, maintaining an ideal working environment inside the base housing 300 and effectively ensuring the reliability and service life of the internal electronic components.

[0043] Preferably, the bottom chassis 300 has four side plates 330 connecting the top plate 310 and the bottom base plate 320, which together with the top plate 310 and the bottom base plate 320 form a cavity; the top plate 310 also includes a chassis truss 311 for mounting the rotating component 100, with two oppositely arranged side plates 330 connected to each end of the chassis truss 311; the pivot shaft 120 is rotatably connected to the bushing 110 via the bearing 130, and together they pass through the through hole 312 of the chassis truss 311, with one end of the pivot shaft 120 away from the bottom base plate 320 extending into the arm 200 and connected to the drive component, which drives the arm 200 to rotate around the bottom chassis 300; the pressure cap 500 presses the sealing element tightly against the chassis truss 311.

[0044] Preferably, the bearing 130 is further fixed between the bushing 110 and the pivot shaft 120 using a snap ring 720 to prevent the bearing 130 from falling off during high-speed rotation.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A stage light with a double-positioning oil seal cover, comprising an arm (200), a base housing (300) supporting the rotation of the arm (200), and a lamp head pivotally connected to the arm (200) for emitting light, wherein the arm (200) and the base housing (300) and / or the arm (200) and the lamp head are pivotally connected by a rotating assembly (100), characterized in that, The rotating assembly (100) passes through the base housing (300), the arm (200), or the mounting plate (400) on the lamp head, and the bushing (110) of the rotating assembly (100) is sealed to the mounting plate (400) by a sealing ring (600). The sealing ring (600) has an inner ring (610) and an outer ring (620) whose ends are connected to each other. It also includes a pressure cap (500) that holds the sealing ring (600) against the mounting plate (400). The pressure cap (500) holds both the inner ring (610) and the outer ring (620). The inner side of the inner ring (610) holds the outer periphery of the bushing (110), and the outer side of the outer ring (620) holds the mounting plate (400).

2. The stage light according to claim 1, characterized in that, The pressure cap (500) abuts against the end face of the inner ring (610) away from the mounting plate (400).

3. The stage light according to claim 1 or 2, characterized in that, The gland (500) abuts against the inner ring (610) on a side away from the bushing (110).

4. The stage light according to claim 3, characterized in that, The pressure cap (500) has a limiting protrusion (510) protruding towards the mounting plate (400) for abutting the inner ring (610), and the side of the limiting protrusion (510) abuts against the outer side of the inner ring (610).

5. The stage light according to claim 4, characterized in that, The pressure cap (500) is an annular ring, and the limiting protrusion (510) is a continuous annular protrusion.

6. The stage light according to claim 5, characterized in that, The inner ring (610) of the sealing ring (600) is shorter than the outer ring (620), and the pressure cap (500) forms a receiving groove (520) for accommodating the outer ring (620) away from the mounting plate (400), and the side of the outer ring (620) abuts against the side wall of the receiving groove (520).

7. The stage light according to claim 1, characterized in that, The sealing ring (600) is a skeleton oil seal.

8. The stage light according to claim 1, characterized in that, The inner ring (610) of the sealing ring (600) and the outer ring (620) are connected to each other to form a connecting section (630), and the mounting plate (400) has a recessed mounting groove (410) for accommodating the connecting section (630).

9. The stage light according to claim 1, characterized in that, The arm (200) and the lamp head are both pivotally connected via a rotating assembly (100) and the arm (200) and the base housing (300). The base housing (300) is pivotally connected to the horizontal support (210) of the arm (200). The mounting plate (400) is either the top plate (310) of the base housing (300) or the horizontal support (210) of the arm (200). The lamp head is pivotally connected to the vertical support (220) of the arm (200). The mounting plate (400) is either the vertical support (220) of the arm (200) or the supporting side plate (330) of the lamp head near the arm (200).

10. The stage light according to claim 1, characterized in that, The mounting plate (400) is the top plate (310) of the base housing (300), the pivot shaft (120) of the rotating assembly (100) is fixedly connected to the base plate (320) of the base housing (300), and the bushing (110) is fixedly connected to the horizontal support (210) of the arm (200); the pressure cap (500) holds the sealing ring (600) against the side of the top plate (310) of the base housing (300) away from the arm (200).

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