A lamp with a lamp holder hovering at any angle

Abstract

The utility model discloses a lamp of lamp holder arbitrary angle hovering, wherein, a kind of arbitrary angle hovering of optional equipment includes the lamp holder for emitting light and the support seat of supporting lamp holder rotation, and the support seat is pivoted between lamp holder and through pivot joint axle, shaft sleeve and hovering device cooperation pivot joint;Hovering device includes base, locking plate and the friction plate between base and locking plate and the turn plate, base is fixedly connected with shaft sleeve, and turn plate is fixedly connected with pivot joint axle;Locking plate is fixedly held with friction plate and turn plate on base, and locking plate continuously forces friction plate to be so that friction plate supports turn plate, make lamp holder can be suspended at arbitrary angle relative to support seat under the action of no external force. The included angle between lamp holder and support seat is at arbitrary angle, and the friction torque provided by hovering device, always greater than or equal to the gravity torque generated by the gravity of lamp holder itself at pivot joint position, so that after removing external force, lamp holder can be suspended at arbitrary angle.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and more specifically, to a lighting fixture with a lamp head that can be suspended at any angle. Background Technology

[0002] Existing stage lighting and architectural lighting equipment generally uses motor drive to adjust the lamp head angle. Although the motor drive solution can achieve convenient synchronous operation in multi-lamp collaborative control scenarios, this solution relies on continuous power supply to maintain the angle lock state. This not only wastes energy, but may also cause overheating failure due to long-term high-load operation of the equipment. More importantly, once the motor is powered off, it will lose the locking function, and the lamp head will rotate freely around the arm due to gravity.

[0003] However, while the purely mechanical locking solution can solve the problem of maintaining the angle after a power outage, it also has many shortcomings. The traditional method uses a scaled plate structure as the core part of the angle adjustment, which only supports discrete angle adjustment. For example, it can only be adjusted in fixed increments such as 15 degrees and 30 degrees. It cannot achieve stepless positioning and is difficult to accurately adapt to the fine-grained needs of arbitrary angle projection in scenarios such as stage follow spots and building exterior lighting. Utility Model Content

[0004] To overcome at least one of the defects of the prior art, this utility model provides a lamp head that can be suspended at any angle. By using the friction plate to abut against the rotating plate, the rotating plate connected to the pivot shaft has damping when rotating relative to the base connected to the bushing, thereby allowing the lamp head to be suspended at any angle.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a lamp with a lamp head that can be suspended at any angle, including a lamp head for emitting light and a support base for supporting the rotation of the lamp head. The lamp head and the support base are pivotally connected to a suspension device via a pivot shaft and a bushing. The suspension device includes a base, a locking plate, and a friction plate and a rotating plate located between the base and the locking plate. The base is fixedly connected to the bushing, and the rotating plate is fixedly connected to the pivot shaft. The locking plate clamps and fixes the friction plate and the rotating plate together on the base, and the locking plate continuously applies force to the friction plate so that the friction plate abuts against the rotating plate, so that the lamp head can be suspended at any angle relative to the support base without the action of external force.

[0006] The friction plate holds the rotating plate against it. When the rotating plate rotates relative to the base, friction is generated between the rotating plate and the friction plate, achieving a damped rotation effect. The locking plate prevents the friction plate from coming loose from the rotating plate during rotation. Thus, when the angle between the lamp head and the support is at any angle, the friction torque provided by the hovering device is always greater than or equal to the gravitational torque generated by the lamp head's own weight at the pivot position, so that the lamp head can be hovered at any angle after the external force is removed.

[0007] Furthermore, the base has a mounting groove for accommodating the friction plate and the rotating plate, and the locking plate is fixedly connected to the top of the mounting groove. The mounting groove restricts the lateral movement of the friction plate and the rotating plate; the locking plate cooperates with the base to form a clamping structure for the friction plate and the rotating plate in the axial direction, effectively preventing the friction plate and the rotating plate from shifting during rotation.

[0008] Furthermore, the friction pads include a first brake pad and a second brake pad, which together clamp the rotating plate. This allows friction to be generated between both sides of the rotating plate and the friction pads, resulting in a more stable damping effect during rotation.

[0009] Furthermore, the hovering device also includes an elastic element that directly or indirectly applies force to the friction plate, ensuring that the friction plate always maintains a tendency to move closer to the base. The elastic element fills the gap between the locking plate and the friction plate. Due to its own elastic deformation, the elastic element continuously applies a stable supporting force to the friction plate. Even when there is slight loosening between the locking plate and the base, or slight dimensional errors in the component manufacturing, the elastic element still ensures that the friction plate maintains an ideal supporting state with the base.

[0010] Furthermore, the elastic element is a wave-shaped gasket. The wave-shaped gasket can make the force on the friction plate more even, and the wave-shaped structure is more suitable for coping with the vibration or impact generated under dynamic rotation conditions, reducing the loosening of the connection caused by stress relaxation, and ultimately ensuring that the friction plate and the rotating plate always maintain abutment.

[0011] Furthermore, it also includes a lower pressure plate located between the elastic element and the friction pad. The elastic element applies a balanced supporting force to the friction pad through the lower pressure plate, which can ensure a continuous and stable contact pressure between the friction pad and the base, thereby improving stability and reliability.

[0012] Furthermore, the locking plate is connected to the base by mounting screws. Both the locking plate and the lower pressure plate have a larger diameter than the friction pad. The portion of the lower pressure plate protruding from the friction pad has clearance holes corresponding to the mounting screws. This design ensures a secure connection between the locking plate and the base, while also allowing the friction pad to rotate freely within the base, unaffected by the mounting screws; and the mounting screws effectively prevent the lower pressure plate from rotating.

[0013] Furthermore, the friction plate has a receiving groove for accommodating at least a portion of the rotating plate. The receiving groove limits the position of the rotating plate, further preventing relative lateral displacement between the two.

[0014] Furthermore, the friction pad is made of a self-lubricating metal material, POM material, or polytetrafluoroethylene (PTFE) material. The self-lubricating metal material combines high strength, high thermal conductivity, and self-lubricating properties, effectively preventing dry friction with the rotating plate while meeting the performance requirements of the friction pair under complex working conditions. POM or PTFE materials, on the other hand, have a certain degree of lubricity but can still generate friction with the rotating plate, achieving damped rotation.

[0015] Furthermore, the support base includes two arms for pivoting the lamp head and a housing for supporting the arms. The lamp head is rotatably connected to at least one of the arms via the hovering device. Using the hovering device, the lamp head can be hovered at any angle relative to the arms. Simultaneously, the housing provides sufficient space to install electronic components for control, thereby minimizing the size of the arms as much as possible.

[0016] Furthermore, the bushing is fixedly installed on the lamp head, and the pivot shaft is fixedly connected to the arm. The base is fixedly connected to the lamp head, and the rotating plate is fixedly connected to the arm. When the lamp head needs to project at a specific angle, an external force can be applied to make the lamp head rotate around the arm and hover at a specific angle, allowing for flexible operation. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of the hovering device of this utility model.

[0018] Figure 2 This is a cross-sectional view of the assembled hovering device of this utility model.

[0019] Figure 3 This is a schematic diagram of the lamp structure of the present invention, in which the lamp head can be suspended at any angle.

[0020] Figure 4 This is a schematic diagram of the structure for mounting the hovering device on the lamp head and the arm.

[0021] Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle section.

[0022] In the picture:

[0023] 100, Lamp head; 200, Support base; 210, Arm; 220, Chassis; 310, Pivot shaft; 320, Bushing; 400, Hovering device; 410, Base; 411, Mounting groove; 420, Locking plate; 421, First through hole; 430, Friction pad; 431, First brake pad; 432, Second brake pad; 433, Receiving groove; 440, Rotating plate; 450, Elastic element; 460, Lower pressure plate; 461, Second through hole; 462, Clearance hole; 470, Mounting screw. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 4 As shown, a lamp fixture with a lamp head that can be suspended at any angle includes a lamp head 100 for emitting light and a support base 200 for supporting the rotation of the lamp head 100. The lamp head 100 and the support base 200 are pivotally connected to a suspension device 400 via a pivot shaft 310 and a bushing 320. The suspension device 400 includes a base 410, a locking plate 420, and a friction plate 430 and a rotating plate 440 located between the base 410 and the locking plate 420. The base 410 is fixedly connected to the bushing 320, and the rotating plate 440 is fixedly connected to the pivot shaft 310. The locking plate 420 clamps and fixes the friction plate 430 and the rotating plate 440 together on the base 410, and the locking plate 420 continuously applies force to the friction plate 430 so that the friction plate 430 abuts against the rotating plate 440, so that the lamp head 100 can be suspended at any angle relative to the support base 200 without the action of external force.

[0026] The friction plate 430 abuts against the rotating plate 440. When the rotating plate 440 rotates relative to the base 410, friction is generated between the rotating plate 440 and the friction plate 430, achieving a damped rotation effect. The locking plate 420 prevents the friction plate 430 from becoming detached from the rotating plate 440 during rotation. Thus, when the angle between the lamp head 100 and the support base 200 is at any angle, the friction torque provided by the hovering device 400 is always greater than or equal to the gravitational torque generated by the weight of the lamp head 100 at the pivot shaft 310, so that the lamp head 100 can be hovered at any angle after the external force is removed.

[0027] Preferably, the cross-sections of the base 410, the rotating plate 440, and the friction plate 430 are all circular, and the circular cross-section structure is beneficial for rotational motion.

[0028] Preferably, the base 410 and the rotating plate 440 are both fixedly connected to the bushing 320 and the pivot shaft 310 respectively by screws. The locking plate 420 has a first through hole 421 through which the pivot shaft 310 passes.

[0029] Preferably, the friction plate 430 may be selectively disposed on one side of the rotating plate 440 near the base 410 and / or on one side away from the base 410.

[0030] Preferably, the friction plate 430 is a ring structure with a hollow center, which effectively controls the contact area between the friction plate 430 and the rotating plate 440, and avoids the rotating plate 440 from being difficult to rotate due to excessive friction.

[0031] like Figure 1 and Figure 2 As shown, in a preferred embodiment of this utility model, the base 410 has a mounting groove 411 for accommodating the friction plate 430 and the rotating plate 440, and the locking plate 420 is fixedly connected to the top end of the mounting groove 411. The mounting groove 411 restricts the lateral movement of the friction plate 430 and the rotating plate 440; the locking plate 420 cooperates with the base 410 to form a clamping structure for the friction plate 430 and the rotating plate 440 in the axial direction, effectively preventing the friction plate 430 and the rotating plate 440 from shifting during rotation. The friction plate 430 and the rotating plate 440 abut against the bottom end of the mounting groove 411, and the locking plate 420 is detachably connected to the top end of the mounting groove 411 by screws.

[0032] In a preferred embodiment of this invention, the friction plate 430 includes a first brake plate 431 and a second brake plate 432, which together clamp the rotating plate 440. This allows friction to be generated between both sides of the rotating plate 440 and the friction plate 430, resulting in a more stable damping effect during rotation.

[0033] Preferably, the first brake pad 431, the rotating plate 440, the second brake pad 432 and the locking plate 420 are arranged sequentially in a direction away from the base 410, and the hollow area in the middle of the second brake pad 432 allows the pivot shaft 310 to pass through.

[0034] Preferably, the first brake pad 431 and the second brake pad 432 are provided with a receiving groove 433 for accommodating part of the rotating plate 440 on one side near the rotating plate 440, so that the two can clamp the rotating plate 440 more securely.

[0035] In a preferred embodiment of this invention, the hovering device 400 further includes an elastic element 450 that directly or indirectly applies force to the friction plate 430, ensuring that the friction plate 430 always maintains a tendency to move closer to the base 410. The elastic element 450 helps to offset torque errors caused by machining errors.

[0036] In a preferred embodiment of this utility model, the elastic element 450 is a wave-shaped gasket. The wave-shaped gasket can make the friction plate 430 more evenly stressed, and the wave-shaped structure is more suitable for coping with the vibration or impact generated under dynamic rotation conditions, reducing the loosening of the connection caused by stress relaxation, and ultimately ensuring that the friction plate 430 and the rotating plate 440 always maintain abutment.

[0037] In a preferred embodiment of this invention, a lower pressure plate 460 is further included between the elastic member 450 and the friction plate 430. The elastic member 450 applies a balanced supporting force to the friction plate 430 through the lower pressure plate 460, which can ensure a continuous and stable contact pressure between the friction plate 430 and the base 410, thereby improving stability and reliability.

[0038] Preferably, the lower pressure plate 460 has a second through hole 461 through which the pivot shaft 310 passes.

[0039] In a preferred embodiment of this utility model, the locking plate 420 is connected to the base 410 by mounting screws 470. The diameters of both the locking plate 420 and the lower pressure plate 460 are larger than that of the friction plate 430. The portion of the lower pressure plate 460 protruding from the friction plate 430 is provided with clearance holes 462 corresponding to the mounting screws 470. This arrangement ensures a secure connection between the locking plate 420 and the base 410, while also allowing the friction plate 430 to rotate freely within the base 410, unaffected by the mounting screws 470; and the mounting screws 470 effectively prevent the lower pressure plate 460 from rotating.

[0040] Preferably, the elastic element 450 is a wave-shaped washer, the diameter of which is smaller than that of the locking plate 420 and the lower pressure plate 460, and the wave-shaped washer is located within the annular area defined by the plurality of mounting screws 470.

[0041] In a preferred embodiment of this invention, the friction plate 430 has a receiving groove 433 for accommodating at least a portion of the rotating plate 440. The receiving groove 433 limits the rotation plate 440, further preventing relative lateral displacement between the two.

[0042] In a preferred embodiment of this invention, the friction plate 430 is made of a self-lubricating metal material, POM material, or polytetrafluoroethylene material. The self-lubricating metal material combines high strength, high thermal conductivity, and self-lubricating properties, effectively preventing dry friction with the rotating plate 440 while meeting the performance requirements of the friction pair under complex working conditions. The POM or polytetrafluoroethylene material, on the other hand, has a certain degree of lubricity but can also generate friction with the rotating plate 440, achieving damped rotation.

[0043] Preferably, the material of the friction plate 430 can be selected as copper-based self-lubricating material (such as copper-graphite composite material or copper), iron-based self-lubricating material or aluminum-based self-lubricating material, etc., which can provide sufficient strength.

[0044] Optionally, the friction pad 430 can be made of a metal-polymer composite material, such as copper-PTFE or aluminum-PEEK, which combines the strength of metal with the low friction properties of polymer.

[0045] like Figures 3 to 5As shown, in a preferred embodiment of this invention, the support base 200 includes two arms 210 for pivotally connecting to the lamp head 100 and a housing 220 for supporting the arms 210. The lamp head 100 and at least one of the arms 210 are rotatably connected via the suspension device 400. Using the suspension device 400, the lamp head 100 can be suspended at any angle relative to the arms 210. Simultaneously, the housing 220 provides sufficient space to install electronic components for control, thereby minimizing the size of the arms 210.

[0046] Preferably, one side of the lamp head 100 is rotatably connected to one of the arms 210 via the suspension device 400, and the other side of the lamp head 100 is rotatably connected to the other arm 210, with a locking device provided between them. When the lamp head 100 is suspended at a specific angle by the suspension device 400, it is then locked by the locking device to stabilize the projection angle of the lamp head 100.

[0047] Preferably, the two arms 210 are fixedly disposed on opposite sides of the chassis 220.

[0048] Optionally, the lamp head 100 and the arm 210 are both rotatably connected via the suspension device 400.

[0049] Optionally, the arm 210 is pivotally connected above the housing 220, thereby allowing the lamp head 100 to rotate relative to the housing 220 around at least two dimensions to produce a variety of lighting effects.

[0050] In a preferred embodiment of this utility model, the bushing 320 is fixedly installed on the lamp head 100, and the pivot shaft 310 is fixedly connected to the arm 210. The base 410 is fixedly connected to the lamp head 100, and the rotating plate 440 is fixedly connected to the arm 210. When the lamp head 100 needs to project at a specific angle, an external force can be applied to make the lamp head 100 rotate around the arm 210 and hover at a specific angle, which is flexible in operation.

[0051] In other embodiments of this utility model, the pivot shaft 310 may be fixedly connected to the lamp head 100 and the bushing 320 may be mounted on the arm 210, depending on design requirements.

[0052] 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 lamp fixture with a lamp head that can be suspended at any angle, comprising a lamp head (100) for emitting light and a support base (200) for supporting the rotation of the lamp head (100), wherein the lamp head (100) and the support base (200) are pivotally connected to a suspension device (400) via a pivot shaft (310) and a bushing (320), characterized in that, The hovering device (400) includes a base (410), a locking plate (420), and a friction plate (430) and a rotating plate (440) located between the base (410) and the locking plate (420). The base (410) is fixedly connected to the bushing (320), and the rotating plate (440) is fixedly connected to the pivot shaft (310). The locking plate (420) clamps and fixes the friction plate (430) and the rotating plate (440) together on the base (410), and the locking plate (420) continuously applies force to the friction plate (430) so that the friction plate (430) abuts against the rotating plate (440), so that the lamp head (100) can hover at any angle relative to the support base (200) without the action of external force.

2. The lamp according to claim 1, characterized in that, The base (410) has a mounting groove (411) for accommodating the friction plate (430) and the rotating plate (440), and the locking plate (420) is fixedly connected to the top of the mounting groove (411).

3. The lamp according to claim 1, characterized in that, The friction pad (430) includes a first brake pad (431) and a second brake pad (432), which together clamp the rotating plate (440).

4. The lamp according to claim 1, characterized in that, The hovering device (400) also includes an elastic element (450) that applies force directly or indirectly to the friction plate (430), so that the friction plate (430) always maintains a tendency to move closer to the base (410).

5. The lamp according to claim 4, characterized in that, The elastic element (450) is a wave-shaped gasket.

6. The lamp according to claim 4, characterized in that, It also includes a lower pressure plate (460) located between the elastic element (450) and the friction plate (430).

7. The lamp according to claim 6, characterized in that, The locking plate (420) is connected to the base (410) by mounting screws (470). The diameters of the locking plate (420) and the lower pressure plate (460) are both larger than the friction plate (430). The portion of the lower pressure plate (460) that protrudes from the friction plate (430) is provided with clearance holes (462) corresponding to the mounting screws (470).

8. The lamp according to claim 1, characterized in that, The friction plate (430) has a receiving groove (433) for accommodating at least a portion of the rotating plate (440).

9. The lamp according to claim 1, characterized in that, The friction plate (430) is made of self-lubricating metal material, POM material, or polytetrafluoroethylene material.

10. The lamp according to claim 1, characterized in that, The support base (200) includes two arms (210) for pivoting the lamp head (100) and a housing (220) for supporting the arms (210), and the lamp head (100) is rotatably connected to at least one of the arms (210) via the suspension device (400).

11. The lamp according to claim 10, characterized in that, The bushing (320) is fixedly installed on the lamp head (100), and the pivot shaft (310) is fixedly connected to the arm (210).

Images