Stage lamp with waterproof supporting arms

Abstract

The stage lamp comprises a lamp holder used for generating light beams and an arm used for being in pivot joint with the lamp holder, a pivot joint shaft is arranged on the side face, close to the arm, of the lamp holder, the arm comprises two oppositely-arranged supporting frame plates, the supporting frame plates are provided with pivot joint holes allowing the pivot joint shaft to penetrate through, and the pivot joint shaft is arranged in the pivot joint holes. The pivoting hole is pivoted with the pivoting shaft through a bearing; the LED lamp further comprises a sealing ring for sealing the pivoting hole and the pivoting shaft, a first annular groove used for installing the sealing ring and a second annular groove formed in the other side face and used for installing the bearing are formed in the side face, close to the lamp holder, of the supporting frame plate, and the supporting frame plate is sunken in the circumferential direction of the pivoting hole to form the first annular groove and / or the second annular groove. The sealing device further comprises a pressing plate used for abutting against the sealing ring, and the pressing plate is detachably installed on the supporting frame plate. By arranging the sealing ring, good sealing performance is achieved between the pivoting shaft and the pivoting hole, the sealing ring is fixed in the first annular groove through the pressing plate, and the sealing ring is prevented from loosening in the working process.

Description

TECHNICAL FIELD

[0001] The utility model relates to stage lamp technical field more specifically, it is stage lamp with waterproof support arm. BACKGROUND

[0002] In prior art, the lamp head of stage lamp is pivoted to the arm, and multi-angle free adjustment is realized by rotating shaft. In order to ensure smooth operation of rotating parts, lubricant is injected into each rotating joint part to reduce friction loss. However, such design has significant defects: on the one hand, lubricant is prone to leakage during long-term use or high-frequency rotation, which not only pollutes the outer surface of the lamp body, affects the appearance and cleanliness, but also may penetrate into the optical element area, interfere with the light projection quality; on the other hand, the traditional sealing structure is difficult to completely isolate the overflow of lubricant, especially under high temperature or vibration working conditions, the oil film diffusion problem is more prominent.

[0003] For waterproof stage lamp used outdoors, its use environment is more complex, and it needs to additionally cope with multiple erosions of rain, humid air and dust. Water vapor and dust are easy to penetrate into the inside through the gap between shaft-hole cooperation, and form sticky dirt after mixing with lubricant, which accelerates the oxidation and corrosion of metal transmission parts, resulting in increased rotating resistance and decreased positioning accuracy. Therefore, an integrated sealing solution that can simultaneously realize oil leakage prevention, water vapor prevention and dust intrusion prevention under dynamic rotation conditions is urgently needed. SUMMARY

[0004] The utility model discloses to overcome at least one of the defects described in the prior art, provide a stage lamp with waterproof support arm, solve the problem of lubricating oil leakage between rotating parts, and also ensure that the support arm has good waterproofness.

[0005] To solve the above technical problems, the utility model adopts the technical scheme: a stage lamp with waterproof support arm, comprising a lamp head for generating a light beam, an arm for pivoting the lamp head, the lamp head is provided with a pivot shaft close to the side surface of the arm, the arm includes two oppositely arranged support frame plates, the support frame plate is provided with a pivot hole for the pivot shaft to pass through, and the pivot hole and the pivot shaft are pivoted through a bearing; it also includes a sealing ring for sealing between the pivot hole and the pivot shaft, one side of the support frame plate close to the lamp head is provided with a first annular groove for mounting the sealing ring, and a second annular groove is provided on the other side and used for mounting the bearing, the first annular groove and / or the second annular groove are recessed along the circumference of the pivot hole by the support frame plate, and it also includes a pressing plate for abutting the sealing ring, the pressing plate is detachably mounted on the support frame plate.

[0006] The sealing ring is arranged to provide good sealing between the pivot shaft and the pivot hole, effectively preventing the leakage of lubricant, and effectively preventing water and dust.

[0007] Further, the sealing ring is an oil seal, which has an inner ring for sleeving on the pivot shaft and an outer ring, and the outer ring abuts against the first annular groove. The oil seal can effectively prevent the leakage of lubricant, and also has good waterproof and dustproof effects, effectively preventing water vapor from entering the inside of the arm, so that the rotation between the lamp head and the arm is smooth.

[0008] Further, the pressing plate is an annular pressing plate having a first through hole for the pivot shaft to pass through. The annular pressing plate is used to abut against the oil seal, so that the stress on the oil seal is more uniform, preventing deformation of the oil seal due to uneven stress, and ensuring the reliability of the oil seal during operation.

[0009] Further, the inner ring and the outer ring are both coated with an elastic material. The elastic material can effectively fill the gap between the pivot shaft and the pivot hole, further ensuring the waterproof performance of the arm.

[0010] Further, the pivot hole of the support frame plate is provided with a step for abutting against the sealing ring. The cooperation between the pressing plate and the step allows the sealing ring to be stably installed in the first annular groove.

[0011] Further, it further includes a rotating wheel fixedly connected to the other end of the pivot shaft away from the lamp head, a motor providing driving force, and a synchronous belt transmitting driving force to the rotating wheel, and the rotating shaft of the motor is fixedly sleeved with a driving wheel, and the synchronous belt is sleeved with the rotating wheel and the driving wheel. The motor drives the lamp head to rotate around the support arm, and the synchronous belt transmission mode has high reliability.

[0012] Further, the rotating wheel abuts against the inner ring of the bearing. The bearing is located at a predetermined position to prevent rotation from being difficult due to deviation.

[0013] Further, the bearing and the second annular groove are in interference fit. The bearing is prevented from shaking during operation, so that the rotation between the lamp head and the arm is more accurate.

[0014] Further, the pivot shaft is provided with a ring-shaped abutting seat and a rotating shaft connected with each other, the ring-shaped abutting seat is located in the lamp head, the lamp head is provided with a second through hole for the rotating shaft to pass through, and a first waterproof strip is arranged between the ring-shaped abutting seat and the lamp head. Through the arrangement, the connection between the pivot shaft and the lamp head is more stable, and the first waterproof strip can effectively prevent water vapor from entering the lamp head from the second through hole, thereby further ensuring the waterproof performance of the lamp.

[0015] Further, the support frame plate is buckled with a plastic shell away from the lamp head and forms a containing cavity, and the plastic shell and the support frame plate are sealed and connected through a second waterproof strip. The plastic shell can effectively reduce the overall weight of the arm. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an explosion structure schematic view of the lamp head and the arm.

[0017] Figure 2 is a structure schematic view of the stage lamp after being cut.

[0018] Figure 3 is Figure 2 is a local enlarged structure schematic view of part A.

[0019] in the figure:

[0020] 100, lamp head; 200, arm; 210, support frame plate; 220, pivot hole; 221, step; 230, first ring-shaped groove; 240, second ring-shaped groove; 250, pressing plate; 260, rotating wheel; 270, abutting plate; 280, horizontal support; 300, pivot shaft; 310, abutting seat; 320, rotating shaft; 400, bearing; 410, inner ring; 420, outer ring; 500, sealing ring; 510, inner ring; 520, outer ring; 610, first waterproof strip; 620, second waterproof strip; 700, plastic shell; 800, case. DETAILED DESCRIPTION

[0021] The drawings are only used for exemplary illustration, and cannot be understood as a limitation of the patent; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it can be understood that some well-known structures and their descriptions in the drawings can be omitted. The positional relationship described in the drawings is only used for exemplary illustration, and cannot be understood as a limitation of the patent.

[0022] As Figures 1 to 3As shown, a stage lamp with waterproof support arm comprises a lamp head 100 for generating light beam, an arm 200 for pivoting the lamp head 100, the lamp head 100 is provided with a pivoting shaft 300 near the side of the arm 200, the arm 200 comprises two oppositely arranged support frame plates 210, the support frame plates 210 are provided with pivoting holes 220 for the pivoting shaft 300 to pass through, the pivoting holes 220 and the pivoting shaft 300 are pivoted through bearings 400; further comprising a sealing ring 500 for sealing between the pivoting holes 220 and the pivoting shaft 300, the support frame plates 210 are provided with a first annular groove 230 for mounting the sealing ring 500 near one side of the lamp head 100, and a second annular groove 240 for mounting the bearings 400 on the other side, the first annular groove 230 and / or the second annular groove 240 are recessed along the circumference of the pivoting hole 220 by the support frame plates 210, further comprising a pressing plate 250 for abutting the sealing ring 500, the pressing plate 250 is detachably mounted on the support frame plates 210.

[0023] By arranging the sealing ring 500, the pivoting shaft 300 and the pivoting hole 220 have good sealing property, which effectively prevents the leakage of lubricant and also effectively plays a waterproof and dustproof role. The sealing ring 500 is fixed in the first annular groove 230 by the pressing plate 250, which avoids loosening during work; at the same time, since the temperature inside the stage lamp gradually rises during operation, the gas expands, at this time the pressing plate 250 can prevent the impact of airflow on the sealing ring 500. The detachable design of the pressing plate 250 is beneficial to the subsequent maintenance work of the sealing ring 500 and rotating parts.

[0024] Preferably, the sealing ring 500 is interference fit with the first annular groove 230.

[0025] Preferably, further comprising a cabinet 800 for pivoting the arm 200; the arm 200 further comprises a horizontal support 280 for connecting the two support frame plates 210, the arm 200 is pivoted above the cabinet 800 through the horizontal support 280.

[0026] In the preferred embodiment of the utility model, the sealing ring 500 is an oil seal, the oil seal has an inner ring 510 for sleeving on the pivoting shaft 300 and an outer ring 520, the outer ring 520 abuts the first annular groove 230. The oil seal can effectively prevent the leakage of lubricant, and also can play a good waterproof and dustproof role, effectively preventing water vapor from entering the inside of the arm 200 from the outside, so that the rotation between the lamp head 100 and the arm 200 remains smooth.

[0027] Preferably, the sealing ring 500 is a TC skeleton oil seal.

[0028] In the preferred embodiment of the utility model, the pressing plate 250 is an annular pressing plate 250 with a first through hole for the pivot shaft 300 to pass through. The annular pressing plate 250 is used to press against the oil seal, making the stress on the oil seal more uniform, preventing the oil seal from deforming due to uneven stress, and ensuring the reliability of the oil seal during operation.

[0029] Preferably, the annular pressing plate 250 is connected to the support frame plate 210 by screws.

[0030] Preferably, the diameter of the first through hole is 1-3 mm different from the diameter of the inner ring 510 of the oil seal. This arrangement ensures that the pressing plate 250 can continuously press against the outer ring 520 of the oil seal, preventing the oil seal from moving out of position.

[0031] In another embodiment of the utility model, the pressing plate 250 can be composed of several discontinuous pressing plates.

[0032] In the preferred embodiment of the utility model, the inner ring 510 and the outer ring 520 are both coated with an elastic material. The elastic material can effectively fill the gap between the pivot shaft 300 and the pivot hole 220, further ensuring the waterproof performance of the arm 200.

[0033] In the preferred embodiment of the utility model, the support frame plate 210 is provided with a step 221 inside the pivot hole 220 for pressing against the sealing ring 500. The pressing plate 250 and the step 221 cooperate with each other, allowing the sealing ring 500 to be stably installed in the first annular groove 230.

[0034] Preferably, the step 221 also presses against the outer ring 420 of the bearing 400.

[0035] In the preferred embodiment of the utility model, a rotating wheel 260 is fixedly connected to the other end of the pivot shaft 300 away from the lamp holder 100, a motor is provided to drive the rotating wheel 260, and a synchronous belt is used to transmit the driving force to the rotating wheel 260. The rotating shaft of the motor is fixedly sleeved with a driving wheel, and the synchronous belt is simultaneously sleeved with the rotating wheel 260 and the driving wheel. The motor drives the lamp holder 100 to rotate around the support arm, and the synchronous belt transmission mode has high reliability.

[0036] In the preferred embodiment of the utility model, the rotating wheel 260 presses against the inner ring 410 of the bearing 400. This allows the bearing 400 to be located in a predetermined position, preventing the bearing 400 from being offset and causing poor rotation.

[0037] Preferably, a bearing plate 270 is further included to abut the outer ring 420 of the bearing 400, which cooperates with the step 221 in the pivot hole 220 to stabilize the bearing 400 in the pivot hole 220, avoid its sliding out, and ensure smooth rotation.

[0038] In the preferred embodiment of the present application, the bearing 400 is in interference fit with the second annular groove 240. This prevents the bearing 400 from shaking during operation, and makes the rotation between the lamp holder 100 and the arm 200 more accurate.

[0039] In the preferred embodiment of the present application, the pivot shaft 300 has an annular abutting seat 310 and a rotating shaft 320 connected with each other. The annular abutting seat 310 is located inside the lamp holder 100, the lamp holder 100 is provided with a second through hole through which the rotating shaft 320 passes, and a first waterproof strip 610 is arranged between the annular abutting seat 310 and the lamp holder 100. Such arrangement makes the connection between the pivot shaft 300 and the lamp holder 100 more stable, and the addition of the first waterproof strip 610 also effectively prevents water vapor from entering the inside of the lamp holder 100 from the second through hole, further ensuring the waterproof performance of the lamp.

[0040] Preferably, the abutting seat 310 and the rotating shaft 320 are integrally formed and made of metal.

[0041] In the preferred embodiment of the present application, a plastic shell 700 is buckled on the side of the support frame plate 210 away from the lamp holder 100 and forms a containing cavity with the support frame plate 210. The plastic shell 700 and the support frame plate 210 are sealed and connected by a second waterproof strip 620. The plastic shell 700 can effectively reduce the overall weight of the arm 200.

[0042] Preferably, the support frame plate 210 is made of metal to ensure good support.

[0043] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A stage light with a waterproof support arm, comprising a lamp head (100) for generating a light beam, an arm (200) for pivoting the lamp head (100), a pivoting shaft (300) being arranged near a side surface of the arm (200) for the lamp head (100), characterized in that, The arm (200) comprises two oppositely arranged support frame plates (210), the support frame plates (210) are provided with a pivot hole (220) through which the pivot shaft (300) passes, the pivot hole (220) and the pivot shaft (300) are pivotally connected through a bearing (400); further comprising a sealing ring (500) for sealing the pivot hole (220) and the pivot shaft (300), the side of the support frame plate (210) close to the lamp holder (100) is provided with a first annular groove (230) for mounting the sealing ring (500), and a second annular groove (240) is provided on the other side for mounting the bearing (400), the first annular groove (230) and / or the second annular groove (240) are recessed along the circumference of the pivot hole (220) by the support frame plate (210), further comprising a pressing plate (250) for abutting the sealing ring (500), the pressing plate (250) is detachably mounted on the support frame plate (210).

2. The stage light of claim 1, wherein The sealing ring (500) is an oil seal, the oil seal has an inner ring (510) for sleeving on the pivot shaft (300) and an outer ring (520), the outer ring (520) abuts the first annular groove (230).

3. The stage light of claim 2, wherein The pressing plate (250) is an annular pressing plate (250) having a first through hole through which the pivot shaft (300) passes.

4. The stage light of claim 2, wherein The inner ring (510) and the outer ring (520) are both coated with an elastic material.

5. The stage light of claim 1, wherein The pivot hole (220) of the support frame plate (210) is provided with a step (221) for abutting the sealing ring (500).

6. The stage light of claim 1, wherein, Further comprising a rotating wheel (260) fixedly connected to the other end of the pivot shaft (300) away from the lamp holder (100), a motor providing driving force and a synchronous belt transmitting driving force to the rotating wheel (260), the rotating shaft of the motor is fixedly sleeved with a driving wheel, and the synchronous belt is simultaneously sleeved on the rotating wheel (260) and the driving wheel.

7. The stage light of claim 6, wherein The rotating wheel (260) abuts the inner ring (410) of the bearing (400).

8. The stage light of claim 1, wherein, The bearing (400) and the second annular groove (240) are interference fit.

9. The stage light of claim 1, wherein, The pivot shaft (300) has an annular abutting seat (310) and a rotating shaft (320) connected to each other, the annular abutting seat (310) is located inside the lamp holder (100), the lamp holder (100) is provided with a second through hole through which the rotating shaft (320) passes, and a first waterproof strip (610) is arranged between the annular abutting seat (310) and the lamp holder (100).

10. The stage light of claim 1, wherein, The side of the support frame plate (210) away from the lamp holder (100) is buckled with a plastic shell (700) to form a containing cavity, and the plastic shell (700) and the support frame plate (210) are sealingly connected through a second waterproof strip (620).

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